The conjugation pilus is used to transfer dna from one bacterium to another.
what is pilus?
Many bacteria have an extension on their surface called a pilus, which resembles hair. Although some researchers reserve the name pilus for the appendage required for bacterial conjugation, the terms pilus and fimbria can be used interchangeably. Oligomeric pilin proteins make up the majority of all pili structures.
DNA can be transferred between bacteria during the process of bacterial conjugation thanks to conjugative pili. Because they allow for the exchange of genes through the development of "mating pairs," they are frequently referred to as "sex pili," in analogy to sexual reproduction.
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The monosaccharides and the disaccharides are designated as _____ because they provide calories.
The monosaccharides as well as the disaccharides are designated as nutritive sweeteners since they provide calories.
Nutritive sweeteners, which are also sometimes termed as caloric sweeteners supply energy in the form of carbohydrates. A few nutritive sweeteners are naturally present in foods such as fructose, which is found in fresh fruits.
Monosaccharides are the simplest sugars or carbohydrates having the general formula (CH₂O)ₙ and are generally colorless, water soluble, crystalline solids. Glucose, fructose as well as galactose are all examples of monosaccharides.
Disaccharides are made up of two monosaccharides which are linked together by means of a glycosidic bond. They are also soluble in water. The examples of disaccharides are sucrose, lactose as well as maltose.
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Unlike eukaryotes, bacterial dna is not enclosed by a nuclear membrane. instead, bacterial dna is condensed into a region called the __________.
Unlike eukaryotes, bacterial DNA is not enclosed by a nuclear membrane. instead, bacterial DNA is condensed into a region called the nucleoid.
Eukaryotes are the organisms that possess the eukaryotic cell. The eukaryotic cell is advanced type of cell with well-defined nucleus and also the cell organelles are present. Eukaryotes can have both 70S and 80S type of ribosomes.
Nucleoid is the condensed region in the prokaryotic cell that comprises of the genetic material, the DNA. It is an irregular shaped structure lying in the cytoplasm of the cell. There is usually a single pair of chromosome present in the nucleoid.
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2. During an activity, a teacher labeled the following scenario as hypertonic. Is she correct? Why or why no
%H₂0
15%
solute
80% H₂O
% solute
It is a hypotonic solution because the solute concentration is more than the soluion.
hypotonic solution is the solution that has a lower solute concentration than the cell so water moves into the cell causing plant cells to swell and animal cells to swell and burst whereas hypertonic solution is the solution that has a higher solute concentration than the cell so water moves out of the cell and into the solution causing the cell to plasmolyze.During hypotonic solution, the plant cell fills up and become more rigid causes (turgor pressure) on the other hand animal cell The cell would burst (hemolysis).To know more about hypotonic solution visit :
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What is the name of a chemical that is used only on inanimate objects and cannot be safely ingested as antimicrobial?
a. antiseptic gel
b. antibiotic
c. antibody
d. sanitizer
A chemical that is used only on inanimate objects and cannot be safely ingested as antimicrobial is sanitizer
Sanitizers are the chemicals used to destroy the disease causing pathogens from the inanimate objects. These substances are generally bleach like or different proportion alcohol solutions. The basic way they work is by dissolving the protein layer of the microbe and exposing its content leading to its death.
These sanitizers may also contain some essential oils to aid the skin in staying hydrated and not dry when used. During the corona times it helped to prevent the spread of virus as people regularly used it to get rid of any germs.
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A muscle fiber will respond to a stimulus when that stimulus reaches the __________ level. recruitment resting rigor mortis threshold relaxation
When an external stimulus crosses the threshold, a muscle fibre will respond.
The level of the thresholdFor the identification of the electrical activity carried out by the active muscles, the threshold level is a crucial consideration. A portion of the electrical activity carried out by the target muscles may be excluded if the chosen threshold level is higher than the overall activity.What is the stimulus threshold for muscle contraction?A certain stimulus magnitude is necessary for muscle contraction. The threshold stimulus is the smallest amount of force needed for a stimulus to cause a muscle to contract in response.If the stimulus intensity is less than this threshold value, there is no response.learn more about threshold here
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Which element is a component of all proteins, all nucleic acids, chlorophyll, and is the primary component of air?
Nitrogen is a component of all proteins, all nucleic acids, chlorophyll, and is the primary component of air.
Since plants require nitrogen in the biggest amount of all other significant nutrients, it is the nutrient that limits crop productivity that is mentioned the most frequently. Nitrogen is a component that every amino acid needs to be functional. Proteins are composed of amino acids.Nitrogen is a component of nucleic acids, which make up the DNA of all living things and contain the genetic code.Nitrogen is present in chlorophyll, which is where carbs are created (photosynthesis). Chlorophyll is the substance that gives plants their green hue.Photosynthesis moves along quickly when nitrogen levels are sufficient.A plant usually grows swiftly if it obtains enough nitrogen. The leaves will also begin to turn a dark green color.Learn more about the Nitrogen cycle with the help of the given link:
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explain how atp is formed and broken down in the body
Answer:
ATP is able to power cellular processes by transferring a phosphate group to another molecule (a process called phosphorylation). This transfer is carried out by special enzymes that couple the release of energy from ATP to cellular activities that require energy.
Strong evidence for the common ancestry of all life comes from the fact that _________________.
Strong evidence for the common ancestry of all life comes from the fact that similar DNA sequences
What is DNA?
Humans and nearly all other species carry their genetic information in DNA, also known as deoxyribonucleic acid. The DNA of an individual can be found in almost all of their cells. The majority of DNA is found in the cell nucleus (where it is known as nuclear DNA), but there is also a tiny quantity of DNA in the mitochondria (where it is called mitochondrial DNA or mtDNA). Cellular organelles called mitochondria transform the energy from food into a form that can be utilized by cells.
Adenine (A), guanine (G), cytosine (C), and thymine (C) are the four chemical bases that make up the code that stores the information in DNA (T). More than 99 percent of the 3 billion bases that make up human DNA are the same in every person.
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Why do scientists complete their experiments more than once?
Answer:Scientists repeat experiments several times because it results in more accurate data that can be trusted over just doing an experiment once.
Explanation:
Cognitive-behavioral and learning theories are based on the idea that sexual behaviors are influenced by:_______
Cognitive-behavioral and learning theories are based on the idea that sexual behaviors are influenced by: Positive and negative feedback that people receive when they express sexual behaviors.
What are the three primary theories of cognitive learning?There are three significant theories of cognition. Piaget's developmental theory, Lev Vygotsky's social-cultural cognitive theory, and the information process theory are the three cognitive theories. Piaget thought that for a kid to be able to comprehend the world, they must pass through four stages of cognitive development.What distinguishes behavioral and cognitive theories of learning in particular?The main distinction between behaviorist and cognitive learning approaches is that behaviorism places more emphasis on using one's own actions or other things that may be seen to explain things. The foundation of cognitivism is primarily on cognitive functions like memory and decision-making.To learn more about cognitive theories visit:
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Describe the functions of the brain and the spinal cord. how are these functions similar? how are these functions dissimilar?
Brain- The brain is a sophisticated organ that manages every bodily function as well as cognition, memory, emotion, touch, motor skills, vision, respiration, temperature, and hunger.
Spinal Cord- It connects our brain to our lower back. Our spinal cord carries nerve signals from our brain to our body and vice versa. These nerve signals help you feel sensations and move our body.
Similarity
The meninges protect and cushion the spinal cord, much like they do the brain. Most of the nerves in the body are connected to the brain through spinal nerves. The eyes, ears, and other components of the head are connected to the brain via various nerves.
Dissimilarity
The majority of bodily functions are managed by the brain, which is situated inside the skull. The spinal cord is a tube-shaped organ that extends from the base of the brain to the base of the spine. The nerves that make up the spinal cord transmit data from the brain to the rest of the body.
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Found in the urinary bladder, __________ resembles __________, but the apical cells are rounded, not flattened.
Transitional epithelium found in the bladder resembles stratified squamous epithelium, but the apical cells are rounded, not flattened.
Transitional epithelium- The bladder's lining consists of the transitional epithelium. These structures make up the urinary bladder tissues and are in charge of giving the bladder the necessary tensile properties. This is because the building serves as the body's organ for storing pee.
Squamous Epithelium- Multiple layers of epithelium are used to create the stratified squamous epithelium, and squamous cells are used to create the top epithelial structure.
Since the stratified squamous epithelium contains flattened cells on the epithelial area, the transitional epithelium differs in having apical cells with rounded tops.
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What was done to overcome the problem of the MSL landing?
1. A pulley system was created
2. A parachute was used
3. A tether and roper were used
4.More airbags were used
The spacecraft descended on a parachute, then during the final seconds before landing, the final landing system was a tether and rope!
2. A parachute was usedWhat is MSL?Mars Science Laboratory is a designation of a NASA space probe, launched on November 26, 2011, carrying inside a robot named Curiosity, a rover similar to the Spirit and Opportunity vehicles, used in the Mars Exploration Rover space mission for the planet exploration.
To solve the problem, engineers designed the kit to cut the parachute and use rockets for the final part of the landing sequence. About 60 feet (18 m) above the surface, the MSL's "sky crane" was deployed. The landing assembly hung the rover below the rockets using a 6 m rope.
With this information, we can conclude that A parachute was used to overcome the problem of the MSL landing
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The process by which an endospore rehydrates and begins cellular metabolism is termed _____.
The process by which an endospore rehydrates and begins cellular metabolism is termed germination.
Endospore is the dormant form of asexual reproductive structure. It has a tough outer layer that is resistant to various unfavorable conditions, harmful chemicals, therefore protecting the inner contents. The endospore's tough layer breaks off only when the favorable conditions arrive.
Germination is the process where the dormancy of a seed or a spore breaks off and the enzymes present inside get activated. The outer protective payer of the endospore breaks off. After that the spore regains all its functionalities and the cell division begins.
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Early one december morning, vanessa was waiting for the bus. vanessa was wearing a sewatshirt. she put her hands in her pockets and walked back and forth, yet by the time the bus arrived she was shivering. what is shivering an indication of? what will it do?
Answer:
Shivering is a response to matain homeostasis
Explanation:
Which does not use radiation but they do use magnetism instead?
X-ray
MRI
CT scan
Answer:
MRI
Explanation:
They use magnetism instead of x-rays or other radiation.
Which technique of studying the brain involves injecting the patient with radioactive glucose?
PositivePositive emission tomography (PET) scan technique of studying the brain involves injecting the patient with radioactive glucose.
What is a PET technique?Positron emission tomography (PET) is a type of nuclear medicine procedure that measures metabolic activity of the cells of body tissues. PET is actually a combination of nuclear medicine and biochemical analysis.
A PET technique can be used to find the malignant tumor cells or diagnose condition like epilepsy.
A small amount of radioactive glucose is injected into the veins.
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Determine whether the given procedure results in a binomial distribution. if not, give the reason why not. toss a coin, and record the number of tosses until the first head
Yes it is a binomial distribution
The binomial distribution was the sum of the series of the multiple independent and the identically distributed Bernoulli trials. In the Bernoulli trial, the experiment was said to be random and they can only have two possible outcomes: the success or the failure. the Binomial distribution is the common probability the distribution was that models the probability of to obtaining the one of two outcomes and under a given number of the parameters. It is summarizes the number of the trials when each trial has to be the same chance of the attaining one of the specific outcome. The binomial distribution was model allows us to compute the probability of the observing the specified number of "successes" when the process is also repeated a specific number of the times (e.g., in a set of patients) and the outcome for the given patient is either the success or a failure
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Why do plants have both chloroplasts and mitochondria but animals only have mitochondria?
The answer to the question is-
A plant requires sunshine, carbon dioxide (CO2), and water for photosynthesis to occur. The mitochondria then break down the sugar once it has been produced through photosynthesis to produce energy for the cell. Animals only need mitochondria, not chloroplasts, because they obtain their sugar from the food they eat.
What is mitochondria?Most eukaryotic organisms contain a mitochondrion, a double-membrane-bound organelle. Adenosine triphosphate (ATP), which is used as a source of chemical energy throughout the cell, is primarily produced by mitochondria using aerobic respiration.
In some multicellular organisms, certain cells lack mitochondria. Numerous unicellular organisms, including microsporidia, parabasalids, and diplomonads, have diminished or changed the structure of their mitochondria.
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Identification of bacteria in the laboratory usually begins with the ________ for placement in one of two large groups of bacteria.
Identification of bacteria in the laboratory usually begins with the gram stain for placement in one of two large groups of bacteria.
A gram stain is a rapid laboratory test used to detect the presence of bacteria that cause an infection.
By doing a gram stain test we can identify whether the bacteria have a positive or negative charge, so that if the result of the gram stain is red, the bacteria are gram-negative.
What is a bacteria?It is a microorganism formed by a single cell, of small size. Its cellular structure is prokaryotic and it is characterized by not having a nucleus.
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Helicopter transport of patients was responsible for not only transport but also improved treatment of wounded soldiers due to in-flight care during:_________
Helicopter transport of patients was responsible for not only transport but also improved treatment of wounded soldiers due to in-flight care during the Vietnam War.
What is the Vietnam War?From 1 November 1955 to 30 April 1975, when Saigon fell, there was a war in Vietnam, Laos, and Cambodia. Officially, North Vietnam and South Vietnam engaged in battle during the second Indochina War. The Cold War-era proxy war is commonly regarded as taking place in North Vietnam, which was supported by the Soviet Union, China, and other communist allies, and South Vietnam, which was supported by the United States and other anti-communist friends. The United States' direct involvement ended in 1973 after a nearly 20-year duration.
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Macrophages ingest and digest many pathogens. which organelle plays a major role in the activity of macrophages?
Macrophages ingest and digest many pathogens. The organelle that plays a major role in the activity of macrophages is lysosome.
Macrophages are the immune cells that belong to the category of white blood cells. They elicit an immune response in order to protect the body from foreign invaders. They can activate other immune cells as well. The type of immunity that macrophages provide is innate immunity.
Lysosome are the cell organelles that consists of hydrolytic enzymes. The lysosome burst open whenever the cell becomes damaged or is infected. This is the reason why macrophages are found to be associated with lysosome.
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Identify the letter that indicates a flexible tube that has c-shaped cartilaginous rings that keep it from collapsing.
'E' letter for Trachea indicates a flexible tube that has c-shaped cartilaginous rings that keep it from collapsing.
There are many cartilage rings in a typical trachea (windpipe) (a strong and flexible tissue). These C-shaped rings give your child's trachea support while enabling it to bend and move naturally during breathing.These rings are O-shaped rather than C-shaped due to a congenital anomaly known as full tracheal rings. Your youngster may get aberrant windpipe thinning and airway stenosis as a result. The trachea has between 16 and 20 rings. This cartilage defect may have an influence on any number of those rings. While some kids with full tracheal rings may at first only show minor breathing issues, other kids might be in serious respiratory distress.Learn more about the Trachea with the help of the given link:
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Flagella and cilia of eukaryotic cells require a cytoskeleton composed of ______ to function properly
Flagella and cilia of eukaryotic cells require a cytoskeleton composed of microtubules to function properly.
What is the role of microtubules in cilia and flagella?The intracellular movement and positioning of membrane vesicles and organelles, the separation of chromosomes during mitosis, and the beating of cilia and flagella are all regulated by microtubules. The first microtubule motor proteins, kinesin and dynein, move along microtubules in opposite directions, kinesin moving toward the plus end and dynein moving toward the minus end. Many different eukaryotic cells move by means of cilia and flagella, which are plasma membrane projections based on microtubules. The flagella of many bacteria are prokaryotic, which means they differ greatly from the flagella of eukaryotes.Learn more about the Microtubules with the help of the given link:
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What makes up the organic matrix component of bone?
a. minerals and cells only
b. type i collagen and noncollagenous proteins
c. cells and collagen only
d. cells only
Type I collagen and non collagenous proteins makes up the organic matrix component of bone.
Which components make up the matrix of bone?The material found between cells in bone tissue is called bone matrix. The matrix of bones is composed of both organic and inorganic elements. Collagen makes up the majority of the organic component of the bone matrix. The bone matrix is composed of 67% inorganic material, primarily calcium phosphate crystals called hydroxyapatite.
What produces organic bone matrix?However, collagen is the main organic component. The osteoblasts and osteocytes that release type I collagen are responsible for around 90% of the organic component of the bone matrix. Collagen and calcium phosphate, which are the two main components of bone, set it apart from other hard tissues like chitin, enamel, and shell.
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Archaea with a plasma membrane composed of a tetraether monolayer would most likely be found __________.
The correct answer for this question is at a temperature of 90 degrees
Archaeal and bacterial lipids (A) Phosphatidylglycerol (PG) from Escherichia coli is a bilayer forming lipid in bacteria. The acyl chain can be branched, have a cyclohexyl group at the end, or have one or more unsaturated bonds.
The cytoplasmic membrane of bacteria and archaea determines the composition of the cytoplasm to a large extent. Because ion gradients across membranes, particularly proton and/or sodium ion gradients, are critical for the bioenergetic conditions of these microorganisms, strategies to limit permeation are required.
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The initial stage of atherosclerosis is characterized by accumulation beneath the endothelium of excessive amounts of?
The initial stage of atherosclerosis is characterized by accumulation beneath the endothelium of excessive amounts of LDL.
The accumulation of lipids, cholesterol, and other chemicals in and on the artery walls is known as atherosclerosis. The accumulation is known as plaque.The build-up of lipids and fibrous components in the major arteries is a hallmark of the degenerative illness known as atherosclerosis. A picture of a typical artery's anatomy can be found in Foam cells, or subendothelial accumulations of cholesterol-engorged macrophages, are the earliest lesions of atherosclerosis.Nitric oxide and prostacyclin are two chemicals that are produced by your endothelium. These maintain the fluid in your blood and stop it from clotting when it shouldn't. These compounds' insufficient production is a symptom of various diseases, which raises your risk of clotting.To learn more about atherosclerosis.
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Which of the following statements is correct?
Ribosomes are the largest organelles in a cell
Ribosomes are surrounded by a membrane
Ribosomes are the powerhouse of the cell
Ribosomes are found both in prokaryotic and eukaryotic cells
Answer: D Ribosomes are found both in prokaryotic and eukaryotic cells
Explanation:
Answer:
d) Ribosomes are found both in prokaryotic and eukaryotic cells
Explanation:
I did the k12 test and got a 100.
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I can't really understand what the experiment would be, so I can't think of a hypothesis.
The experiment that is to be conducted is intended to verify and test the widely accepted hypothesis that maggots appear spontaneously in decaying meat. Additionally, you should record each and every step you take during this experiment.
The following is the theory or hypothesis : Fly larvae are referred to as maggots. They feed on meat because females place their eggs in materials that give food for the hatched maggots. Many fly species prefer meat as a source of maggot feeding. Modern meat processing and packaging follow strict health code guidelines. Until it is time to make it, it is stored frozen or chilled and is packaged in plastic. Meat exposed to the air at room temperature, however, might draw female flies looking for a spot to deposit their eggs which leads to maggots. Fly eggs can easily hatch on leftover meat scraps causing maggots that aren't wrapped in plastic or placed inside of a bag.
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What would be the benefit of a controlled lab experiment versus an observational field study? what are the benefits of using a model?
The fundamental benefit of conducting experiments as opposed to observational research is that a well-conducted study may provide solid proof that the intervention actually produced the desired outcome. Two or more groups may be compared in an experiment.
What distinguishes an observational research from a controlled experiment?In an observational research, participants are measured or surveyed without any attempt to influence them. In a controlled experiment, participants or objects are divided into groups, and one group is given a treatment while the other is not.
Strength: Due to the natural environment of a field experiment, behaviour is more likely to represent actual life, giving it better ecological validity than a lab experiment.
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