Antibiotics can fight some bacterial diseases.
Antibiotics are the medication specially produced to fight the bacterial diseases. They can either kill the bacteria or slow their growth inside the host body. Some examples of antibiotics are: penicillin, cephalosporins, tetracycline, etc.
Bacterial diseases are those caused by the bacteria. These can be present outside the body and cause infection or may be present inside. The examples of diseases are: Tuberculosis, Anthrax, Tetanus, Leptospirosis, Pneumonia, etc. Some of the general symptoms of the bacterial disease are: fever, chills, cough, redness or swelling in some part of the body, vomiting, stomach pain, etc.
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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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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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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:
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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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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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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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:
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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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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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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When part of a molecule, what is the typical number of bonds and nonbonding pairs of electrons for each of these atoms?.
Answer:This means the halogens are typically just 1 bonding pair and 3 lone pairs.
Explanation:
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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Name one similarity and one difference between pinocytosis and receptor-mediated endocytosis.
One similarity and one difference between pinocytosis and receptor-mediated endocytosis are listed below :-
One similarity between pinocytosis and receptor-mediated endocytosis is that : they are both types of endocytosis, which is a type of active transport that transports particles into cells. These particles, which can include cell fragments, whole cells, and other large molecules (such as water and cholesterol), are too large to enter the cell passively through the cell membrane.
One major difference between pinocytosis and receptor-mediated endocytosis is that : pinocytosis is not a selective process, whereas receptor-mediated endocytosis is. Furthermore, pinocytosis takes place solely through the cell membrane, whereas receptor-mediated endocytosis takes place with the help of receptors.
What is Pinocytosis and Receptor-Mediated Endocytosis?
Pinocytosis is a simple endocytosis process that transports liquids and their solutes into the cell. As a result, it is also known as "cell drinking."
Another type of endocytosis is receptor-mediated endocytosis (RME), which is responsible for the selective uptake of solutes into the cell.
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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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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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A heritability coefficient of ____ means about 50 percent of the difference between people on a specific characteristic is the result of heredity.
A heritability coefficient of 0.5 means about 50 percent of the difference between people on a specific characteristic is the result of heredity.
Heritability coefficient tells about how the differences in genes of people accounts for their phenotypic differences. It is represented as H² . The formula for calculation of Heritability coefficient is H² = Var(G) / Var(P), where Var(G) is the variance in genotype and Var(P) is the variance in phenotype. The values range from 0 to 1. If the value is 1, then phenotypic difference is due to genetic differences. And if the value is 0 then phenotypic differences are due to environmental factors.
Heredity is the passing on of the traits from one generation to another. An offspring receives half of its genes from the mother and half from the father.
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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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Embryonic stem cells give rise to all cell types in the developing embryo. would you expect the interphase period of a stem cell to longer, shorter, or the same as compared to non-stem cells?
The interphase in embryonic stem cells is shorter as they are rapidly dividing.
Pluripotent stem cells, called embryonic stem cells (ESCs), are generated from the inner cell mass of the blastocyst, an early-stage preimplantation embryo. Four to five days after fertilization, the human embryo reaches the blastocyst stage, which consists of 50-150 cells. The blastocyst is destroyed when the inner cell mass (germinal cells) are separated by immuno surgery, raising moral questions as to whether the pre-implantation embryo follows the same moral standards as the post-implantation development. Similar to adult stem cells, these are stem cells supplied by a healthy, fully developed human being. They were not collected or implanted using embryos or fetuses. Scientists believe that stem cells can be used to treat and understand disease because they can differentiate into different cell types.Therefore, embryonic stem cells will have shorter interphase.
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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.
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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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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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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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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Which cellular structures are composed of many amphipathic molecules that are driveen together under the influence of the hydrophobic effect?
The hydrophobic effect causes a large number of amphipathic molecules, which make up cellular membranes, to be drawn together.
What components make up the cell membrane?With a few rare exceptions, glycerophospholipids, which are made up of glycerol, a phosphate group, and two fatty acid chains, are the primary component of cellular membranes, including plasma membranes and interior membranes. The three-carbon molecule glycerol serves as the framework for these membrane lipids.What use does a cell membrane serve?All cells have a cell membrane, also known as a plasma membrane, which separates the interior of the cell from the external environment. A semipermeable lipid bilayer makes up the cell membrane. The movement of materials into and out of the cell is controlled by the cell membrane.learn more about cellular membrane here
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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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When viewed under a transmission electron microscope, the golgi apparatus looks like ______.
Answer:
a stack containing multiple flattened, disk-shaped membranes called cisterns
Explanation:
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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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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The tendency of an atom to pull electrons toward itself is referred to as its _____. ionic potential tonicity covalency electronegativity polarity
The tendency of an atom to pull electrons toward itself is referred to as its "electronegativity" .
An atom's electronegativity gets higher as you move to the right in the periodic table. An atom's electronegativity gets higher as you move up in the periodic table. Thus, the atoms in the top right have the highest electronegativities and the atoms in the bottom left have the lowest ones
The ability of an atom or functional group to draw electrons to itself is known as an electronegativity in chemistry. An atom's electronegativity is influenced by simultaneously its atomic number and the separation between its charged nucleus and valence electrons.
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