The vital ability of an organism to take certain actions when changes occur in its immediate environment is called Adaptation
What is Adaptation ?In biology, there are three related definitions of adaptation. First, natural selection, a dynamic evolutionary process, adapts organisms to their environments, improving their evolutionary fitness. Second, it is a state that the populace attained as a result of that process.
The streamlined bodies of aquatic fish and mammals, the light bones of flying birds and mammals, the long, dagger-like canine teeth of carnivores, and the long necks of giraffes for feeding in the tops of trees are a few examples. According to all biologists, organismal characteristics frequently represent adaptations.Learn more about Adaptation here:
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Meiosis is the process that produces sperm and eggs by reducing the gamete cell's number of chromosomes from _____to _____.
Select one:
a.
diploid to haploid
b.
haploid to polyploidy
c.
diploid to monoploidy
d.
haploid to diploid
it's not b
Answer: Your answer my boy is A.) diploid to haploid.
Explanation: I just did this assignment .It would be great if I could get Brainliest.
4. A student is excitedly telling their friend their
plans for the weekend, and is not listening to the
teacher's lab instructions. During the lab, the
student mixes two of the wrong chemicals
together and an uncontrolled chemical reaction
occurs.
Precautions:
Response:
Answer:
Response: Tell the teacher. Precaution: Always listen to all the instructions before engaging in any activities.
Precautions for Conducting Chemical Experiments: Active Listening: Always pay close attention to the teacher's instructions and lab guidelines. Ignoring instructions can lead to accidents or mistakes.
Read and Understand: Prior to starting any experiment, thoroughly read and understand the lab procedure, including the chemicals being used and any potential hazards.
Proper Attire: Wear appropriate lab attire, including a lab coat, safety goggles, and gloves to protect yourself from potential chemical splashes.
Chemical Compatibility: Familiarize yourself with the chemicals you're using and their potential reactions. Only mix chemicals that are approved and indicated for the experiment.
Labeling: Ensure all chemicals are properly labeled with their names and concentrations. Never use unlabeled or improperly labeled containers.
Workspace Setup: Keep your workspace organized and uncluttered. This minimizes the risk of accidental spills or cross-contamination.
No Distractions: Avoid distractions such as talking to friends during the experiment. Focus on the task at hand to prevent errors.
Small Quantities: When mixing chemicals, use small quantities as instructed in the procedure. This reduces the potential impact of any unexpected reactions.
Test Tubes and Containers: Use appropriate glassware and containers for chemical mixing. Avoid using incorrect or damaged equipment.
Fume Hood: If applicable, conduct experiments in a fume hood to prevent the inhalation of potentially harmful fumes.
Emergency Equipment: Familiarize yourself with the location and proper use of emergency equipment, such as eyewash stations, safety showers, and fire extinguishers.
Disposal: Follow proper disposal procedures for chemicals and waste materials. Never pour chemicals down the sink without proper guidance.
Know What to Do: In case of an accident or unexpected reaction, know the appropriate steps to take. Alert the teacher or lab supervisor immediately.
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The best description of the bonds that form polypeptides and the difference between polypeptides and proteins is.
The correct option is A i.e that carboxyl and amino groups join by a covalent bond and that a functioning protein can consist of several polypeptides.
What is polypeptides ?
A polypeptide is a peptide chain that is longer, continuous, and unbranched. Therefore, along with nucleic acids, oligosaccharides, polysaccharides, and others, peptides belong to the large chemical families of biological polymers and oligomers.
A protein is a polypeptide that has more than 50 amino acids, on average. A protein is made up of one or more polypeptides that are structured in a biologically useful manner. Proteins are frequently coupled to other proteins, other macromolecules like DNA or RNA, or complex macromolecular assemblies.
A polypeptide is a chain of many amino acids, whereas a peptide is two or more amino acids bound together by peptide bonds. One or more polypeptides can be found in proteins. Proteins are therefore extensive strands of amino acids joined together by peptide bonds.
Question:
The best description of the bonds that form polypeptides and the difference between polypeptides and proteins is
A) that carboxyl and amino groups join by a covalent bond and that a functioning protein can consist of several polypeptides.
B) the functional group of one amino acid joins with the carboxyl end of another via covalent bonds; proteins and polypeptides are the same things.
C) amino acids are joined via their hydroxyl groups with covalent bonds and many proteins make up a polypeptide.
D) polypeptides form via hydrolysis, forming hydrogen bonds between amino acids; proteins have a functional group whereas polypeptides do not.
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Many drugs that reach the developing fetus or embryo can cause death or congenital defects. what are examples of congenital defects? select all that apply.
• Skeletal and limb abnormalities
• Central nervous system alterations
• Heart defects
These are applicable in examples to many drugs that reach the developing fetus or embryo can cause death or congenital defects.
What is meant by congenital defects?A congenital anomaly is a morphological or functional abnormality that appears during intrauterine life.These illnesses, which are also known as birth defects, congenital disorders, or congenital abnormalities, arise during pregnancy and can be detected before or at birth as well as later in life.What kinds of flaws are instances of congenital?Cleft lip and palate are typically discovered during standard prenatal screenings.congenital heart disease, which might include a hole in the heart, a valve issue, or a blood vessel issue. Usually identified in the first few years of life, cerebral palsy.Each of the medications or drug classes listed below has the potential to give birth to abnormalities in an unborn child:ACE inhibitors (angiotensin converting enzyme).antagonist of angiotensin II.alcoholcocaine isotretinoin (an acne medication) (an acne drug)high vitamin A dosages.lithium.To learn more about congenital defects visit:
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The unusual organisms living in australia have evolved primarily because of?
Because the unique position of Australia on the face of the Earth.
Australia is the only country in the world that actually covers the entire continent. It is one of the largest countries on the Earth. Although it is rich in the natural resources and has a lot of the fertile land, more than one-third of the Australia is desert. Australia's landscape is also dominated by the Outback, a region where deserts and semi-arid land. The Outback is the result of the continent's large inland plains, its location along the dry Tropic of the Capricorn, and its proximity to the cool, dry, southerly winds
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Which ig antibody is found abundantly is secretions but has very low circulating levels?
Answer:
IgA is an antibody that is present in great amounts in secretions but in extremely low amounts in plasma. A significant circulating antibody called IgG. IgE is often not found in secretions and its concentration in plasma varies. IgD is not produced and is present at low amounts in plasma.
After IgG, immunoglobulin A (IgA) is the second most prevalent antibody. Blood, lymphatic, as well as other bodily fluids including spit, tears, and even milk all include IgA. Additionally, the vaginal, pulmonary, and intestinal linings all contain it. To allow the newly produced IgA molecule to be released through epithelial cells lining numerous ducts and organs, 2 IgA molecules are bonded together and linked to a unique protein. Whereas IgG represents the most prevalent form of immunoglobulin, the human body produces more IgA compared to any other antibody upon a regular basis. IgA, though, is less stable than IgG, and as a result, it is always present in smaller proportions.
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Which offers the best prognosis for the cure of cancer?
a. surgery
b. radiation
c. early detection
d. chemotherapeutic agents
Offers the best prognosis for the cure of cancer early detection.
The correct option is C.
Why is prognosis so important?In managing patients and making decisions, prognosis is crucial. One of the main goals of clinical research is to evaluate the prognostic variables that link the clinical and experimental baseline covariables to outcomes.
Describe a prognosis example:For instance, statistics examining the 5-year survival rate for a specific disease may be many years old from the time they were reported, new and improved treatments may have become available. One condition whose "prognosis" may not be entirely reliable is lung cancer.
What types of prognosis are there?It is possible to give a prognosis of excellent, good, fair, bad, or even hopeless. The risk factors and indications that are present in the patient have a significant impact on the prognosis for a disease or condition.
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Located on the basilar membrane are(is) the ________, containing hair cell sensory receptors for the sense of hearing.
Located on the basilar membrane are(is) the organ of Corti containing hair cell sensory receptors for the sense of hearing.
The organ of Corti is also called basilar papilla which is a complex form of neuroepithelium composed of hair cells sensory receptors and supporting cells. In addition to these sensory and supporting cells, the organ of Corti also consists of a tectorial membrane. Endolymph which is a potassium-rich fluid surrounds the organ of Corti. The organs known as scala tympani and scala vestibule are present under and above the basilar papilla respectively.
The function of the organ of Corti is to generate electrical signals based on the sounds and transmit these signals to the brainstem through the passage of auditory nerves.
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The golgi complex packages cellular products that will be exported from the cell into which structures?.
The golgi complex package cellular products that will be exported from the cell into secretary vesicle structure.
What does the golgi apparatus export?A golgi apparatus is a organelle that helps process and package protein and lipid molecules , especially proteins destined to be exported from the cell .
Secretory vesicle stores molecules and proteins from the endoplasmic reticulum and golgi apparatus until the cell is ready to release them .
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Which structures guard the nostrils and ear canals, preventing particles from entering?
The structures that guard the nostrils and ear canals, preventing particles from entering is called guard hairs or vibrissa.
What is the nostril?The nostril is either of the two orifices located on the nose and used as a passage for air and other gases to travel the nasal passages.
The ear canal is the tube or meatus running from the outer ear to the eardrum through which sound enters.
These two locations are very tender and delicate, which indicates that they need extreme protection from danger.
Also, since they are tubes or passage areas to the internal parts of the body, they require protection to prevent foreign particles from entering.
Therefore, the structures that guard the nostrils and ear canals, preventing particles from entering is called guard hairs or vibrissa.
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A cell is placed in to a solution. upon microscopic inspection of the cell, there appears to be no noticeable change in shape or size to the cell. what type of solution has this cell been placed?
The cell has been placed in an isotonic solution.
In the field of biology, an isotonic solution can be described as a solution in which the concentration of solutes and solvents is the same as the concentration of solutes and solvents inside the cell. As a result, there is no concentration gradient inside or outside of a cell.
When a cell is placed in an isotonic solution, the solvent would neither move into a cell nor move out of a cell because there is no concentration gradient. An equilibrium between the solutes and the solvent is present both outside and inside the cell in an isotonic solution. Hence, there will be no noticeable change in the shape or size of a cell when it is placed in an isotonic solution.
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The phosphotransferase system is classified as a form of active transport because:________
The phosphotransferase system is classified as a form of active transport Because ATP is hydrolyzed and changes the solute's structure as it enters the cell, the phosphotransferase system is categorized as an example of active transport.
What is ATP?
Adenosine 5′-triphosphate, generally known as ATP and typically written without the 5′-, is an essential "energy molecule" found in all living organisms. In particular, it is a coenzyme that transfers energy to cells by releasing its phosphate groups when it interacts with enzymes like ATP triphosphatase. The molecule is composed of an adenine bicyclic system, a furanose ring, and a triphosphate chain.
In 1929, two research teams claimed the discovery of ATP. At Harvard Medical School, Cyrus H. Fiske and Yellapragada Subbarow isolated it from mammalian muscle and liver (Boston).
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The process of turning on the expression of genes in response to a substance in the environment is called:________
The process of turning on the expression of genes in response to a substance in the environment is called epigenetic change.
Expression of gene is the turning on of the gene. This means that the gene is transcribed to synthesize the m-RNA and then the m-RNA is translated to from the proteins. Proteins are the actual structures that carry the information from the DNA and execute in the body.
Epigenetic changes are those that happen on the structure of DNA and regulate the expression of the genes. This can be the enhancement of gene expression or the repression. These changes are not heritable and are also temporary.
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A friend tells you that the theory of evolution is just an educated guess by biologists about how things work. evaluate this statement.
A friend tells you that the theory of evolution is just an educated guess by biologists about how things work- In science the theory are not just an educated guess but are backed experimental data and evidence.
Theory of evolution is based on the idea on slow and gradual changes on the species that occur over time.
It is based on three main components- First the variation occurs randomly among the species, the trait of an individual can be inherited by its progeny, and in the struggle for existence there is survival of the fittest i.e. the one with the favorable traits will survive.
The different types of remains supporting the theory are fossil remain of ancient organisms, fossil layer, similarities among the organisms including the genetic material and embryos.
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The term used to denote foods that contribute energy but lack protein, vitamins, and minerals is ________.
The term used to denote foods that contribute energy but lack protein, vitamins, and minerals is empty calorie foods.
What does it mean when foods are labeled empty calories ?There are a lot of packaged goods in the grocery store that are high in empty calories. This indicates that they are not very nutritious. Instead, they primarily provide your body with additional carbohydrates and solid fats, which can result in weight gain and nutrient inadequacies.
Example of an empty calorie foodEmpty calories are those that are produced by processed oils, added sugars, and solid fats. Carbohydrate-based treats like cakes, cookies, muffins, donuts, granola bars, and more are among them. sweet beverages, such as fruit juice, soda, and energy drinks.
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This pair of molecules are _____. Two ball-and-stick models of molecules. The first molecule consists of five black balls, which form a cyclical structure. Each black ball has two white balls attached. The second molecule has a chain of five black balls connected successively. Each of the two black balls, which are at the ends of the chain, has three white balls attached. Each of the three other black balls has two white balls attached.
Answer:
This pair of molecules are cyclopentane and pentane.
Explanation:
The white balls represent hydrogen atoms while the black balls constitute carbon atoms both for configurations. While each hydrogen atom can only really attach to just one other atom, each carbon atom can connect to 4 other atoms. The first one, therefore, therefore consists of a cycle comprising 5 carbon atoms, each of which is linked to 2 additional carbon atoms as well as to 2 hydrogen atoms. This substance is known as cyclopentane.
Because the balls are joined one after another, the next one is just a linear molecule. It has 3 hydrogen atoms connected to the terminals of two carbon atoms plus 2 hydrogens bonded to each of the 3 separate carbons. The name of such a molecule is pentane.
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Why does aquaporin (aqua1) transport h2o orders of magnitude faster across the erythrocyte plasma membrane than glut1 transports glucose?
Aquaporin (AQUA1) transport H₂O orders of magnitude faster across the erythrocyte plasma membrane than GLUT1 transports glucose because: AQUA1 does not undergo any conformational change while transporting water molecules whereas GLUT1 does and therefore has lesser Vmax.
Aquaporin is a transmembrane protein that transports water molecules across the membrane. These are the passive channel proteins, thus they do not have to undergo any conformational change while transporting the molecules.
GLUT1 is a glucose transporter that is a carrier protein performing facilitated transport. It can be abundantly found in RBCs and brain tissues. Since it is facilitated transport, the glucose is transported down its concentration gradient.
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Rosa receives a low grade on her biology midterm exam. if we know that rosa is low in self-esteem, we might expect her to:_____.
We might expect her to perform poorly on the next test
What is Self esteem ?How we see and regard ourselves is a measure of our self-esteem. It is founded on our perceptions of ourselves, which can be challenging to alter. This could also be referred to as confidence. Depending on your level of self-esteem, you might: Like and appreciate yourself as a person.
Learning to accept our flaws while yet choosing to enjoy ourselves helps us develop self-esteem. Every time a youngster engages in effective exchanges using encouraging words, their sense of self-worth increases. Building a child's self-confidence in their ability to manage their life is crucial.Learn more about Self esteem here:
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Proteins and carbohydrates are built up from their basic building blocks by a process known as:_________
Proteins and carbohydrates are built up from their basic building blocks by a process known as Dehydration synthesis reactions.
The crucial procedure known as Dehydration Synthesis Reactions brings together the constituent parts of carbohydrates, proteins, lipids, and nucleic acids. With the removal of water, these processes combine two or more monomers to create a sizable component of a macromolecule.
Dehydration synthesis reactions include the combining or synthesis of the same or distinct monomer units while removing the water molecules from the reaction. It is a specific type of condensation reaction in which two additional molecules cause the elimination of two water molecules.
During dehydration synthesis, a water molecule is either released when the hydrogen of one monomer reacts with the hydroxyl group of another monomer or when two hydrogens from one monomer join with one oxygen from the other monomer.
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in 1939, heinrich klüver and paul bucy surgically lesioned a structure called the in the brain's limbic system, thereby eliminating defensive responses in various mammal species.
When the amygdala of a rhesus monkey was surgically excised in 1939 by neurosurgeon Paul and psychologist Heinrich the typically irritable species became the most placid of animals. the brain's amygdala, which is mostly connected to emotional functions.
Due to the structure's almond-like form, the name "amygdala" is derived from the Greek word "amygdale," which means "almond." The amygdala is situated immediately prior to (in front of) the hippocampus in the medial temporal lobe. The amygdala's primary function is to control emotions like fear and anger. Our memories are given emotional significance via the amygdala. In multiple brain imaging species studies.
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Which amino acid generates the following product in a transamination reaction with -ketoglutarate?
In a transamination process with alpha-ketoglutarate, the amino acid leucine produces the following product.
With an example, define transamination reaction.The most typical reaction type that is catalysed by PLP-dependent enzymes is transamination. Living cells reversibly convert the amino group from an amine (like -aminobutyrate) or alpha-amino acid (like aspartate) to a alpha-keto carboxylic acid (like alpha-ketoglutarate).This is a crucial biological activity.Where do reactions of transamination take place?A number of tissues, including the kidney, small intestine, muscles, and adipose tissue, participate in the metabolism of amino acids, although the liver is the primary location.
What resulted from the transamination reaction?The availability of -keto acids affects the outcome of transamination processes. The end products are often either alanine, aspartate, or glutamate since the metabolism of fuels produces the matching alpha-keto acids.learn more about transamination process here
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What are derived units?
Answer:
A derived unit is a unit that results from a mathematical combination of SI base units. Calculations involving derived units follow the same principles as other unit conversion calculations.
Explanation:
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Question 4: Switch on your light source. Make sure it is shining onto a wall. Hold your largest clear plastic square between the light source and the wall. 4.1. 4.2. 4.3. What do you observe? Now do the same with the second clear plastic square. B What do you observe? Now do the same with the third clear plastic square. What do you observe? 4.4. What differences do you observe between the shadows of the three shapes?
Rays of light can travel through the cardboard when I hold my largest cardboard square between the light source and the wall, but because the cardboard is not very thick, the light can still pass through and create a shadow.
2b. The shadow is typically shorter.
2c. Completely no shadow 2d. The shadow is either clear or hardly there.
Do cardboard sheets block light?
Based on the precise materials and light sources that were employed, the results of the cardboard experiment frequently differ.
Keep in mind that it is generally expected that reflective materials, such as aluminum foil, and mirrors, would reflect the specified or given light.
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Answer:need answers
Explanation:for project
ASAP PLEASE HELP ASAP
1.Alex poured some pond water into three beakers. She then put waterweed into each
beaker. She put the beakers in different places.
i) In which beaker did the waterweed grow best? Give the correct letter.
________
ii) The waterweed in the box changed from dark green to pale yellow. Why did this happen?
2.In the school pond there were lots of water lilies with large leaves covering the surface. There were not many plants growing below the surface. Suggest a reason
for this.
3.In another experiment, Alex put similar pieces of waterweed into two more beakers of pond water. She added fertiliser to one of them. She kept them both by a window.
i) Alex added fertiliser to beaker E. Suggest the results of this experiment.
ii) What do fertilisers contain to help plants grow? Tick the correct box.
1. (i)The waterweed grew best in the beaker A which is placed in normal daylight.
1. (ii) The color of waterweed placed in the box changed from dark green to pale yellow as the entry of light was stopped which negatively affected the ability of the waterweed to photosynthesize.
2. The school pond having excess water lilies exhibited the growth of not many plants since the large leaves covering the pond surface prevented the penetration of light into the pond.
3. (i) The beaker E in which Alex added fertilizer showed better results in terms of plant growth as compared to the other without fertilizer.
3. (ii) √ Minerals
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The primary sequence of a protein contains proline. What can you predict about its folded structure at that region?.
Answer:
The folded structure at that region of the primary sequence of a protein that contains proline will have an alpha helix at that .
Explanation:
Amino acids that feature a side chain with a cyclic ring system are known as aromatic amino acids.
Histidine, as well as proline,as well as proline, are two well known examples of aromatic amino acids.
These side chains of such amino acids used to make a protein determine the shape of the protein.
Alpha helices were created at that site when proline was present in the amino acid's main sequence.
As a result, an alpha helix would indeed be present within the folded structure of such a proline-containing protein's main sequence.
Amino acids' primary purpose is to act as that of the components that make up proteins. About Fifty to 2,000 amino acids are normally linked end to end in several configurations to form proteins. Each protein contains a different set of amino acid sequences that are folded and bent in a certain way.
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Immune system cells differentiate healthy versus unhealthy cells in the body by examining the ______.
Immune system cells differentiate healthy versus unhealthy cells in the body by examining the glycocalyx part of the cell.
What is Glycocalyx?The Glycocalyx may be defined as a coat that significantly covers the outside of organisms such as bacteria. It is composed or made up of glycoproteins, glycolipids, and polysaccharides.
The major function of the glycocalyx found on the bacteria is that it is like a protective coat that forms the protection for the bacterial cell from the host reactor, which mediates the part of the immune system.
Therefore, the glycocalyx is the part of the cell that plays an essential role in the immune system while differentiating healthy versus unhealthy cells.
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Can you identify the molecules and processes involved in the flow of genetic information through a cell?
The molecules and processes involved in the flow of genetic information through a cell are From left to right: DNA, Transcription, RNA, Translation, and Protein.
A person's genetic information may include details about their own genetic testing, the genetic testing of their family members, and details regarding the manifestation of a disease or problem in their kin (i.e. family medical history).
Genetic information or the findings of genetic tests can be used to make reproductive decisions, ensure early detection and treatment of diseases, or prevent the start of certain disorders. In addition to non-medical uses like insurance and employment, this information is also useful.
Genetic information is crucial that the knowledge required for survival is passed down through the generations of organisms to survive. A population is more likely to adapt successfully to environmental changes if there is enough genetic variation within it.
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Nucleus, chromosome, nucleotide, genome, nucleosome, and base triplet from largest to smallest?
Nucleus > Genome > Chromosome > Gene > Base Triplets > Nucleotide.
Among the list, Nucleus is the largest segment, where as Nucleotide is the smallest segment which combines to form the base triplets, then a gene, then a chromosome, then a genome, and then the genome is present inside the nucleus.
Nucleus- A typically rounded region of most cells that is surrounded by two membranes, regulates the functions of the cell.
Genome- The total collection of DNA instructions present in a cell makes up the genome.
Chromosome- A component that can be found in a cell's nucleus. The proteins and DNA that make up a chromosome are arranged into genes.
Gene- The basic unit of heredity passed from parent to child.
Base Triplet- Any sequence of three bases in a nucleic acid that codes for an amino acid, or some other signal, in protein synthesis.
Nucleotide- A nucleotide is an organic molecule having the basic elements phosphate, pentose sugar, and nitrogenous base.
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Bacteria carry out bidirectional replication of their single chromosome by using _____ replisomes that each contain _____ dna polymerase enzymes.
Bacteria carry out bidirectional replication of their single chromosome by using 2 replisomes that each contains 2 DNA polymerase enzymes.
A replication method takes place between storage media such as virtual disks or hard disks.
This type of replication occurs in different sites where data can be transferred in both directions.
In bacteria, DNA replication takes place in circular DNA along individual chromosomes.
However, it is a reciprocal method where all ribosomal proteins gather at the replication forks to construct a replication complex which is called a replisome.
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A combining form for a flexible form of connective tissue that covers the ends of many bones is:________
A combining form for a flexible form of connective tissue that covers the ends of many bones is cartilage.
Connective tissue is the tissue that joins, supports and protects various others organs and tissues of the body. The examples of connective tissue include: cartilage, adipose tissue, bones, tendons, etc. There are three types of connective tissues: loose, dense and connective.
Cartilage is the connective tissue. It can be found in locations like: between joints, bones, between the vertebrae, in the external ear, etc. The cartilage serves various purposes like support, protection, shape and structure, resistive forces, etc.
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