Answer:
A
Explanation:
The human body has many levels of structural organization: atoms, cells, tissues, organs, and organ system. The simplest level is the chemical level, which includes tiny building blocks such as atoms. Cells are the smallest functional units of life.
The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.
How do biologists describe the order of the stages of the
cell cycle?
what is the functions of lipid?
The main biological functions of lipids include storing energy, as lipids may be broken down to yield large amounts of energy. Lipids also form the structural components of cell membranes, and form various messengers and signaling molecules within the body.
Answer:
function as energy storehouses, and function as important signaling molecules.
This three main types of lipids are triacylglycerols (also called triglycerides), phospholipids, and sterols.
18.Select the statement below that is false concerning aerobic cellular respiration
O a Cells are able to utilize all the energy from glucose when released in one burst.
O b. Cells would lose too much energy as heat if they used glucose directly for individual reactions
O c. Gradual glucose breakdown releases energy slowly.
O d. Cells would lose too much energy as nonusable heat if they used glucose directly.
O e. Gradual glucose breakdown allows for the simultaneous buildup of many ATP molecules.
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What is the function of restriction enzymes?
A)joins nucleotides during transcription
B)adds new nucleotides to the growing strand of DNA
C)joins nucleotides during replication
D)repairs breaks in sugar-phosphate backbones
E)cuts nucleic acids at specific sites
Answer:
Bacteria that cut DNA molecules at specific sequences.
Explanation:
In other words: E. Cuts nucleic acids at specific sites.
Put the steps of HIV cellular infection and replication in the correct order:
- The T helper cell is killed.
- New HIV virion is assembled.
- New HIV buds off the T helper cell getting it's envelope while the Protease enzyme matures the new virus.
- The Integrase enzyme integrates the viral genome with the T helper cell's genome.
- Uncoating of the capsid.
- Reverse Transcriptase turns the ssRNA genome into ds DNA.
- Merging of viral envelope with the T helper cell membrane.
- The T helper cell copies the HIV genome and makes HIV proteins.
- Attachment of the gp proteins in the HIV envelope to CD4 on the T helper cell.
holy person produces antibodies to packages that invade the body. But with the infection of H. I V, the body was, is the ability to produce antibodies and how is that possible? Um, and it shows that the matter said Axe and destroys CD for he cells, which help Erkki South. So we have determined the function of this and how we can affect, as we see in this of antibody production. So basically, the helper peace. So is the middleman in turned immune response. So we have an antigen presenting cell that presents an androgen that activates Alberti sell. The activation of that T cell releases side of kinds that activate B cells. Activation of B cells triggers proliferation of plasma cells, which Ruiz antibodies and thus is able to fight the whatever pathogen has entered the body. But if the virus directly kills off helper T cells, then there's no way for the immune system to actually launch a defense against HIV or any other pathogen. Because the cells and T cells, which carry out cell mediated and Hugh Meral immune responses, are not able to be activated and carried out. So let's see which answer best matches that a cease the CD 40 sells a record intermediate are required intermediate in a series of salty cell signal events that must be completed before B cells. Commager. Yes, that is true. As depicted by this diagram. Let's see if there's any other true statements he states the city for T cells have CD four molecules Cove in when we bound to their source cell surfaces and do not induce apoptosis and other cells during an immune response. So, really, we have nothing to the inducing a pop doses really has nothing to do with, uh, the question. It also does not see the forties city for T cells do not induce apoptosis. So that is just a false statement. Um, and it's just not relevant to the question. See, states That CD for T cell counts are about 1000 per micro liter and a healthy person, but drop over 400 per micro liter. So once again, this is not relevant to how C D four T cells and the loss of them, uh, contribute to the loss of any body synthesis. And D says that CD four cell precursors air formed in the bone marrow and then migrate to the thymus where they developed their T cell receptors. So once again, not relevant. So we can see that B, C and D are just irrelevant to the question of antibody synthesis and the connection to CD four C T cells, which, uh, the correct answer to is a
Explain how water makes its way to the leaves in the tops of the tallest trees against the force of gravity. Name what the climbing of water is called and the two other properties that are responsible for making this possible.
Answer: Capillary action occurs because water is sticky, thanks to the forces of cohesion (water molecules like to stay close together) and adhesion (water molecules are attracted and stick to other substances).
It reminds me of naruto
Which of these two connective tissues, hyaline cartilage or bone (osseous), would you expect to heal more quickly if injured?
Answer:
Injury in bones is expected to heal quicker than damaged hyaline cartilage.
HELP ME OUT PLEASE
17. Animal cell do not have chloroplasts. Why not?
Answer:
Animals don't need chloroplasts because they acquire sugar from their diet; they just need mitochondria. Vacuoles are found in both plant and animal cells. A big, solitary vacuole is found in each plant cell and is used to store water and nutrients.
Explanation:
I gave you answer can you help me with mine
How do nonmetals tend to form bonds? ( O by losing protons
O by losing electrons
O by gaining electrons
O by gaining protons
Answer:
C: by gaining electrons
1. A decomposer ultimately obtains all its food from
O A. mushrooms.
O B. sunlight
O C. dead and decaying plant matter.
OD. preying on other living organism.
Biomolecules are the large molecules necessary for life that are built from smaller organic molecules. There are four major
classes of biological macromolecules: carbohydrates, Lipids, proteins, and nucleic acids, and each is an important component
of the cell and performs a wide variety of functions. Some common biomolecule functions are listed below. Select ALL the
functions of proteins
Options :
A. store energy
B. provide immunity
C. provide structure
D. catalyze reactions
E. store genetic information
Answer:
B-provide immunity,C-provide structure,D-catalyze reactions
Explanation:
I just did the USA Test Prep. I thought it only let me picked one but I chose b and d. I was just missing C:(lol wtv yw
Protein promotes metabolic reactions, supports tissue growth and repair, and synchronizes biological processes. Proteins give your body a structural foundation while also ensuring optimal pH and fluid balance. Thus option B, C, D is correct.
What is function of protein?Amino acids make up proteins. These substances aid in transforming T cells, B cells, and antibodies—important immune system components—into germ-fighters that recognize and eliminate potentially infectious cells as they enter your body.
Amino acid chains are the building blocks of proteins, which fold into distinctive three-dimensional structures.
The final folded shapes of proteins are well-suited for their tasks, and the bonds inside protein molecules assist to stabilize their structure.
An enzyme is a biological catalyst that speeds up a chemical reaction without changing its equilibrium, according to a short and straightforward definition.
Therefore, protein perform a wide variety of functions in a cell.
Learn more about protein here:
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.
how are provirus and viral DNA related?
Answer: Howard Temin's provirus hypothesis holds that the viral RNA introduced into cells during infection becomes converted to DNA by reverse transcription. Viral DNA is then integrated into the host genome.
Explanation: Hope this helped!
Answer:Howard Temin's provirus hypothesis holds that the viral RNA introduced into cells during infection becomes converted to DNA by reverse transcription. Viral DNA is then integrated into the host genome.
Explanation:there really isn't a explanation
What is the definition of
Filtration, Reabsorption, secretion and excretion?
Answer:
Excretion is the removal of waste products made in the cells during metabolism from the body.
Filtration is the process in which fluid and small molecules pass into the Bowman's capsule
Reabsorption is when water, ions and nutrients are transferred back into the interstitial fluid via both active and passive transport
Secretion is the removal of waste products from the blood and interstitial fluid.
The type of reasoning that is the basis of the scientific method is _____ reasoning.
3. Susceptibility to antibiotics is a trait, or inherited characteristic, of bacteria.
a. What are two variations, or different versions, of this trait?
Bacteria can be SUSCEPTIBLE or RESISTANT to antibiotics. Susceptible bacteria can't grow if the drug (i.e., the antibiotic) is present.
Susceptibility to antibiotics occurs when bacterial colonies can't grow in presence of the antibiotic (e.g., erythromycin).
Some antibiotic-resistant bacteria include:
Methicillin-resistant Staphylococcus aureus (it is one of the most common antibiotic-resistant bacteria)Vancomycin-resistant EnterococcusLearn more in:
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Describe the stretch shortening cycle (sac)
and explain how it relates to exercise
Explanation: The stretch-shortening cycle (SSC) refers to the muscle action when active muscle lengthening is immediately followed by active muscle shortening. ... The stretch-shortening cycle (SSC) refers to the muscle action when active muscle lengthening is immediately followed by active muscle shortening.
most elements can only be made where
Answer:
The most common elements, like carbon and nitrogen, are created in the cores of most stars, fused from lighter elements like hydrogen and helium. The heaviest elements, like iron, however, are only formed in the massive stars which end their lives in supernova explosions.
Explanation:
list the four major types of organic compounds
the middle ear is an what filled chamber?
Answer:
The middle ear is an air-filled chamber.
Explanation:
The middle ear is an air-filled cavity/chamber that is between the tympanic membrane and the inner ear.
6. The theory that suggests that plates are slowly moving is called
A. Magnetic Reversal
C. Continental Slope
B. Plate Tectonic
D. Continental Drift
Cấu tạo của tế bào nhân sơ
Answer:
what is this?
Explanation:
i dont know
two reasons why we should try not cut down forest.
Answer:
the plants and animals that live in the forests are destroyed, and some endangered species are at risk of being made extinct.
While Kepler supported the Copernican model of the universe, Kepler concluded the following:
A. The circular orbits of the Copernican model weren't correct. Paths of the planets were elliptical.
B. The circular orbits of the Copernican model weren't correct. Paths of the planets were rectangular.
C. All other bodies in the universe move around the moon in triangular paths.
D. All other bodies in the universe move around the earth in circular paths.
Given the laws put forward by Kepler, we can conclude that option A is correct, he proved that the orbits of the planets were in fact elliptical.
Though options B and C are false due to the impossible nature of the shapes they describe for planetary orbits, option D is also false but is something that many astronomers once believed. It wasn't until the Kepler observations that this theory was proven to be false.
Kepler believed in the Copernican model of the universe, in which the planets revolved around the sun, but through measuring and observing the movement of mars, he would come to the realization that the orbits of the planets were in fact not circular as he and many other believed, but rather elliptical in nature.
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which among the following elements belong to period 3 in the periodic table?
Answer:
The third period contains eight elements: sodium, magnesium, aluminium, silicon, phosphorus, sulfur, chlorine, and argon........
Explanation:
Thank you!!!
A student pushes a toy car along a straight track. The car travels from point A to point B in 2 s.
0
1 m
2 m
3 m
4 m
A
B
What is the speed of the toy car?
A. 0.7 m/s
B. 1.5 m/s
C. 2.0 m/s
D. 6.0 m/s
Answer:
D.
I'm not sure for that
Explanation:
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2. How can you apply the decantation method in your everyday living?
6
Answer:
Answer: A common example is decantation of oil and vinegar. When a mixture of the two liquids is allowed to settle, the oil will float on top of the water so the two components may be separated. Kerosene and water can also be separated using decantation.
Explanation:
searched it
could someone help me match these? thanks also I WILL GIVE BRAINLIEST
Answer:
yes
Explanation:
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Discribe how stellas view of these cells and thair parts changed as she transitioed through the three levels of magnification be sure to identify at least one cell structure or part of the paramecium in your description
Answer:
hesabu yangu ya frei mbele logi masic ungiwana
Explanation:
hesabu yangu ya frei mbele logi masic ungiwana ya
Multiply: (x – 4)(x + 5).
Answer:
(x – 4)(x + 5)
= x(x + 5) -4(x + 5)
= x2 + 5x – 4x – 20
= x2 + x - 20Answer:
x^2+x-20
Explanation: