Answer:
This question lacks options, options are: a. macrophages
b. T cells
c. B cells
d. dendritic cells
e. epithelium
The correct answer is c.
Explanation:
In the secondary lymphoid organs is where foreign substances or antigens are presented and the specific immune response begins. They are the lymph nodes, spleen, and MALT. The main function of B cells is the recognition of foreign molecules to the body, called antigens, and the production of specific antibodies to neutralize them. After maturation, B cells are central cells in the adaptive immune response, they agglomerate in the lymph nodes, spleen and other lymphoid tissues, where they will come into contact with the antigens for which they are specific.
Which of the following systems of the body interact when a stressful situation causes a person's heart rate to increase and pupils of the eyes to dilate?
A.
nervous system and excretory system
B.
endocrine system and nervous system
C.
respiratory system and nervous system
D.
nervous system and digestive system
Answer:
B
Explanation:
helppp please i honestly don’t know
Answer:
hi
Explanation:
An empty field has no plants growing on it. When it rains, some of the field's sail washes away downhill.
Which statement best explains how planting grass on the field might help reduce soil erosion?
O A Grass will make the soll more wet
B. Grass will help hold the soil together.
c Grass will increase the amount of soil.
O O D. Grass will stop water from moving over the field.
O
Answer:
b grass will help hold the soil together
1 point
2. The most precise type of dating used for determining a fossil's age is
relative-age dating. *
True
False
If phosphofructokinase experienced a mutation that interfered with substrate binding, then what other enzyme is going to be most immediately impacted in terms of accessing substrate
Answer: Aldolase
Explanation:
In the metabolism of glucose( glycolysis) phosphofructokinase is an enzyme that catalyzes the conversation of fructose-6-phosphate into fructose-1,6-bisphosphate. This in turn is converted to pyruvate after various steps of enzymatic activity in the glycolytic pathway.
If phosphofructokinase experienced a mutation that interfered with substrate binding, the enzyme that is going to be most immediately impacted in terms of accessing substrate is the ALDOLASE.
Aldolase enzymes cleave fructose-1,6-bisphosphate to triose phosphates( glyceraldehyde 3-phosphate and dihydroxy-acetone phosphate) facilitating an increase in anaerobic production of ATP in muscle.
Therefore, the substrate for binding of aldolase, which is fructose-1,6-bisphosphate is lacking due to mutation of phosphofructokinase enzyme.
Which amphibian is the scientist most likely observing? A scientist is observing an amphibian. It has brightly colored skin, four legs, sticky pads on its feet, and a long, narrow body, a salamander because it has sticky pads on its feet O a salamander because it has a long, thin body O a frog because it has four legs O a frog because it has brightly colored skin
Answer:
B
Explanation:
Explain the Role of the Most
bucco in Living Organisms
Click the statement that best describes the role of each element in living organisms.
Carbon
Oxygen
Hydrogen
DONE
Answer:
carbon
Explanation:
Why might intermittency be a problem with new energy system?
expenses in establishing new energy system
Which example listed below is not a population?
A. all the plant life in a meadow
B. all the red maple trees in a forest
C. all the Saguaro cacti in a desert
D. all the sunshine in a lake
Answer:
D. all the sunshine in a lake
Could I get help on these 2 questions .
Answer:
The ocean, clouds, and under the earth
In the Calvin Cycle, what is ultimately made?
A.H2O
B.Carbon Dioxide
C.Oxygen
D.Glucose
Answer:
D. Glucose
Explanation:
I'm 11 ok your lucky I know that...
According to the fossil record above, during which era did mammals first appear?
A)
Cenozoic
B)
Mesozoic
0
Paleozoic
D)
Modern Day
Answer: The answer is A
Explanation:
took the quiz on usatestprep
Answer:A)
Explanation: Mammals first appeared in the Cenozoic era. My teacher explained it and it's visable in the picture.
Which of the following is an example of heat transfer by conduction?
Answer:
Explanation:
Everyday Examples of Heat or Thermal Conduction
As the pad heats up, it transfers heat to the part of your body that it is in contact with. The heat from a hot liquid makes the cup itself hot. If you grab a cup that has hot coffee, tea or broth in it, the cup itself will be hot and your hands will feel it.
The burning of fingers on a hot iron is an example of heat transfer by conduction. Therefore, option A is correct.
What is heat transfer by conduction?When two objects with different surface temperatures come into contact, conduction takes place. At the point of contact, energy is transferred directly from the material in the hotter object to the material in the cooler item.
When a substance is heated, the particles become more energetic and vibrate more. Then, as these molecules collide with surrounding particles, some of their energy is transferred to them. The energy is then transferred from the hot end of the material to the colder end by repeating this process.
The act of heating a skillet on a stovetop is a typical illustration of conduction. The surface of the pan receives direct contact with the burner's heat. Hence, option A is correct.
Learn more about conduction, here:
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Which of the following are reactants in the process of photosynthesis?
Answer:
Photosynthesis requires sunlight, carbon dioxide, and water as starting reactants (Figure 5.5). After the process is complete, photosynthesis releases oxygen and produces carbohydrate molecules, most commonly glucose. These sugar molecules contain the energy that living things need to survive.
Explanation:
Answer:
carbon dioxide and water
Explanation:
which of the following are reactants in the process of photosynthesis?
.Complete the sentence
The addition or removal of genes from a population is referred to as_____________
Answer:
The answer is -
Evolution
HELPPPPPPP PLEASEEEE!!!! HSIWOKJENQIHLNIODH(PQO:JMEKJl.n,fweb jlgk
What is the mass of a falling rock if it produces a force of 145N while accelerating at a rate of 5 m/s^2
Answer:
29 kg
Explanation:
I just did the math. My bad if it's wrong
Why is the cell membrane often called the plasma membrane?
Answer:
The plasma membrane, also called the cell membrane, is the membrane found in all cells that separate the interior of the cell from the outside environment.
Explanation:
A drug may cause decreased communication between neurons or between neurons and muscles or glands. What might be the common action of this drug to cause such varied effects
Answer:
acid
Explanation:
40 Points
What is the movement of air during the day where land and water meet?
Question 1
options:
Cooler air over land moves toward the water, where it is warmed by radiation.
Cooler sea air moves toward land, where conduction from the land warms it.
Direction cannot be predicted; it must be observed.
Why are climate and latitude so closely related?
Question 2 options:
Lines of latitude are based on climate zones.
Radiant energy from the sun heats locations closest to the equator the most.
Higher latitudes have fewer buildings and a greater ability to absorb radiant energy.
Answers:
Question 1: Cooler air over land moves toward the water, where it is warmed by radiation.
Question 2: Radiant energy from the sun heats locations closest to the equator the most.
Some scientific computer models predict that crop yields for corn and wheat, two food staples that provide for two thirds of the worlds calorie consumption, will decline due to global warming. Which of these is the least likely cause for crop production reduction as caused by climate change?
Answer:
its "D" I got it right.
Explanation:
put the answer choices, it's not hard
Describe the nervous response pathway when you taste something bad and spit it out.
Answer:
you taste it and then you're brain says this is disgusting so then you spit it out
Explanation:
its simple science
remember to imagine that blood in the heart is color-coded according to its oxygenation status. What color of blood would you expect to see in isabelle's left ventricle
Answer:
Red blood.
Explanation:
Red blood is for oxygenated blood, while blue blood is for deoxygenated blood.
The blood in Isabelle's left ventricle would be red, in other words, oxygenated. The left ventricle has oxygenated blood because this blood was first in the right ventricle. Then, it went to the pulmonary arteries, which led the blood to the capillaries close to the alveoli in the lungs. In this area, the deoxygenated blood dropped the CO₂ and took O₂ becoming oxygenated blood. Now, this blood is color-coded red and will go to the pulmonary venules, then to the pulmonary vein, and from there, it will go to the left atrium. Lastly, it will go to the left ventricle to start the systemic circulation, which is the one that distributes the oxygenated blood in the body.
Sharks and dolphins are not closely related but have many similar features due to the
environment where they are found. This is an example of:
A:Convergent evolution
B:Artificial selection
C:Natural selection
D:divergent evolution
MULTIPLE CHOICE
Put the following items in order from smallest to largest.
А
gene, chromosome, nucleus, cell, base, DNA
B
DNA, gene, chromosome, base, nucleus, cell
с
cell, nucleus, chromosome, gene, DNA, base
D
base, DNA, gene, chromosome, nucleus, cell
Answer:
D
Explanation:
Base would be the smallest and cell would be largest
Answer:
D
Explanation:
The base is the smallest out of everything in these choices, then it should be the DNA, Gene, and so forth
I need someone to answer number 9 please
The purpose of both mitosis and meiosis is to create new cells. Both processes involve the replication of genetic material within the cell, and
both take place within a sexually reproducing individual. There is a difference between the processes, however. What is one crucial
difference?
SC.912.L. 16.17
Meiosis creates an exact replica of the parent cell, while mitosis shows genetic diversity.
Mitosis creates an exact replica of the parent cell, while meiosis shows genetic diversity.
Only meiosis allows for the possibility of gene point mutations.
Only mitosis allows for the possibility of translocation.
Answer: Mitosis creates an exact replica of the parent cell, while meiosis shows genetic diversity.
Explanation:
I did the test too
The one crucial difference between meiosis and mitosis is mitosis creates an exact replica of the parent cell, while meiosis shows genetic diversity.
The correct option is (B).
What is the difference between meiosis and mitosis?Mitosis and meiosis both are the process of cell division.
Mitosis occurs generally when cell growth happens, the cell divides itself to produce two identical daughter cells.
Meiosis, in cell division, occurs in germ cells and in the division there is a formation of four daughter cells.
Mitosis produce exact identical cell with equal number of chromosome, whereas meiosis produce four haploid cells with genetic diversity.
Thus, the option (B)Mitosis creates an exact replica of the parent cell, while meiosis shows genetic diversity is correct.
Learn more about cell division, here:
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What is a fossil? Different types?
Answer:
a fossil is a bone under the ground
Explanation:
and ex of a fossil is a dinosaur fossil
Why do you think electron microscopes allow for greater magnification than compound microscopes?
Explanation:
Electron microscopes have a greater magnifying power than optical microscopes due to the use of shorter wavelength electrons.they allow magnifications of up to one million times the size of a specimen while optical microscopes can achieve a magnification of no greater than 1000x.
I hope it's helpful!
An Electron microscope allows for greater magnification than compound microscopes it utilizes electrons of a much shorter wavelength as compared to the visible light in a compound microscope.
What is an Electron microscope?An electron microscope may be defined as a type of microscope that utilizes a beam of accelerated electrons in order to construct or produce an enlarged image of tiny objects or specimens like virus cells.
The higher resolution power is the characteristic feature of the electron microscope. An Electron microscope allows a magnification of approximately one million times the actual size of objects or biological specimens.
While, when it comes to the compound microscope, the magnification power limits to a thousand times the actual size of objects or biological specimens.
Therefore, the utilization of electrons of a much shorter wavelength is responsible for greater magnification in the electron microscope.
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Plants and animals exchange materials through the process of photosynthesis and cellular respiration. Which of these statements is true about the way these two processes are related?
A.The products of photosynthesis inhibit (stop) cellular respiration.
B.The products of photosynthesis are also the products of cellular respiration.
C.The reactants of photosynthesis are also the reactants of cellular respiration.
D.The products of photosynthesis are the reactants of cellular respiration.
Answer:
the product of photosynthesis ara the reactants of cellular respiration
why could an ecosystem be unable to sustain an increase in carnivores?
A. There is not enough prey
B. The carnivores now have more space
C. plants growth increases
D. It is a marine ecosystem