Answer:
Antibodies are produced by specialized white blood cells called B lymphocytes (or B cells). ... The mature B cells, called plasma cells, secrete millions of antibodies into the bloodstream and lymphatic system.
Answer:
B lymphocytes
Explanation:
Does “survival of the fittest apply to domesticated animals? Why or why not? *
Answer:
Yes.
Explanation:
This survival of the fittest is instinct helps domestic animals live. Just because an animal is domesticated, does not mean that instincts go away. Those instincts like hunting may get suppressed, but not taking away.
Answer:
Survival of the fittest does not apply to domesticated animals. This is because these animals don't live in the wild so they don't have to run after things and kill them. Their food comes out of a tin and is provided by human beings. They don't have any predators so their lives are seldom at risk. Thus, they don't need to be fitter or more powerful than other animals in any way.
Lets take the example of pet dogs. We keep them for our support or simply because we enjoy their company. We provide them with food, shelter etc. and protect them. Since, we basically do everything for them; they need not evolve into a stronger, more powerful species.
However, in the case of stray dogs, they have to fight for their survival. They have to fight with other dogs for food and shelter. Hence, survival of the fittest will apply here as the strongest dog gets to eat.
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meaning of Natality Rate
Answer:
It's the same as the birth rate.
how do apocrine glands differ from other skin glands
Which of the following is a characteristic of invertebrates
A) highly developed senses
B) backbone
C) eclosed circulatory system
D) multicellular
Answer:
A.
Explanation:
They do not have highly developer senses or surely they don't have a backbone ,every animal that have a backbone isn't an invertebrate. They don't have an enclosed circulatory system neither
PLEASE HELP ME IM TIMED!
Answer:
Interphase is your Answer..........
what is guttation???
Answer:
The exudation(To discharge through pores or incisions, as moisture or other liquid) of drops of water from the leaves of some vascular plants as a result of root pressure.
Note;- Text extracted from Wiktionary
the secretion of droplets of water from the pores of plants.
how many cans of green beans in green bean casserole
Colchicine is a toxin that binds to tubulin proteins and prevents microtubules from elongating. What effect might this have on dividing cells
The effect Colchicine might have on dividing cells is that the duplicated chromosomes might not be able to segregate into daughter nuclei.
Colchicine is an alkaloid that attaches to tubulin and prevents it from polymerization to microtubules. As we know that Microtubules are a component of the cytoskeleton of a cell that aids in molecular mobility inside the cell.
During cell division, chromatin condenses into chromosomes, which are then connected to microtubules. The chromosomes are separated into daughter cells by microtubules.
When these cells are treated with colchicine, tubulin polymerization to microtubules may not occur, and the chromosomes containing daughter nucleic might not be separated.
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Why might more and more people be using clean energy instead of fossil fuels ? Use evidence from the text to support your answer .
Answer:
I don't have the information from the text book but. People might more and more be using clean energy instead of fossil fuel is because fossil fuel is limited. It's a non-renewable, it takes millions of years to form. Also because global warming is making a big impact on our planet, using clean energy instead of fossil fuel can reduce slow green house emission.
Explanation:
Which part of the mitochondrion contains the proteins that carry out oxidative phosphorylation?.
Answer:
Inner Mitochondrial Membrane
Explanation:
Oxidative phosphorylation takes place in the inner mitochondrial membrane, in contrast with most of the reactions of the citric acid cycle and fatty acid oxidation, which take place in the matrix.
the segment of the dna molecule where messenger rna synthesis begins is called the
objects are brought into focus on the retina by changes in the curvature and thickness of the
Objects are brought into focus on the retina by changes in the curvature and thickness of the lens.
What is eye lens?The lens basically directs light rays onto the retina. The lens is clear and replaceable if necessary. As we age, our lenses deteriorate, necessitating the use of reading glasses.
The lens is normally clear and is located behind the iris. The pupil directs light to the lens.
Small muscles attached to the lens can cause the lens to change shape, allowing the eyes to focus on objects that are close or far away.
Light bends (refracts) and focuses on the retina at the back of the eye as it passes through the lens.
The lens's thickness and curvature can be adjusted to focus on objects at various distances and ensure that the image is as clear as possible (this process is known as accommodation).
Thus, eye lens helps to focus the object.
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A life history strategy describes an organism produces offspring and how much energy the organism invests in any given reproductive bout.
a. True
b. False
Which of the following is a reasonable claim the researchers can make based on the data in the graphs?
Answer:
First give the options we can't tell random ir may be wrong give options because in question it is asking which of the following if we say any randomly it becomes wrong.
________happens in the mitochondrial membrane and is where hydrogen ions are
pumped through to create ATP
O glycolysis
Okreb's cycle
O light reactions
electron transport chain
Explanation: Electron transport chain
How are hydrogen ions pumped across the membrane?
Image result for what is used to make the mitochondrial membrane and is where hydrogen ions are pumped through to create ATP
During electron transport, energy is used to pump hydrogen ions across the mitochondrial inner membrane, from the matrix into the intermembrane space. A chemiosmotic gradient causes hydrogen ions to flow back across the mitochondrial membrane into the matrix, through ATP synthase, producing ATP.
Which of the following processes does not contribute to carbon cycling?
A. Condensation
B. Photosynthesis
C. Combustion
D. Respiration
Answer:
A. Condensation
Explanation:
Condensation is the process that does not contribute to carbon cycling. It is the process by which water vapor in the air is changed into liquid water.
Answer:
A. condensationExplanation:
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What are the effects of enzymes on chemical reactions? Select all of the answers that apply.
Answer:
Enzymes will make chemical reactions go faster. Enzymes are catalysts which will lower the activation energy of a chemical reaction. Activation energy is the energy needed to get a reaction going.
Explanation:
what are the selections?
how much time does it take autumn to travel 240 meters at a speed of 80 meters per second
10. Which of the following statements about the leading strand is true?
A. It is synthesized discontinuously and uses 1 RNA primer.
B. It is synthesized discontinuously and uses multiple RNA primers.
C. It is synthesized continuously and uses multiple RNA primers.
D. It is synthesized continuously and uses 1 RNA primer.
The statement 'the leading strand is synthesized continuously and uses 1 RNA primer' is TRUE. It is replicated in the 3' – 5' direction.
The leading strand refers to the DNA template strand that is synthesized in the 3' – 5' direction during DNA replication.
The 3' – 5' direction that occurs during DNA replication is the direction of the replication fork.
RNA primers are short RNA sequences used for the initiation of the synthesis of DNA (DNA replication) both in the leading DNA strand and the lagging DNA strand.
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Draw the basic structure of a nucleotide with its three parts.
Answer: This picture has the answer
Explanation:
The nucleotides which are found in the DNA molecule are made up of nucleoside moieties and phosphate molecule. These are of five types which include adenosine, guanosine, uracil, thymine, and cytosine.
What is a nucleotide?Nucleotides are the organic molecules which consist of a nucleoside and a phosphate moiety. The nucleotide molecules serve as the monomeric units of the nucleic acid polymers such as deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), both of which are the essential biomolecules within all life forms on the Earth.
A nucleotide is one of the main structural components, or the building blocks, of DNA and RNA molecules. A nucleotide consists of a base which has one of four nitrogenous base which could be purine and pyrimidine such as adenine, thymine, guanine, and cytosine plus a molecule of sugar and one molecule of phosphoric acid.
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The measure of the average kinetic energy of the particles of a substance is its
Answer:
Temperature is a measure of the average kinetic energy of the particles in a substance. It is the kinetic energy of a typical particle. in a substance. It is the kinetic energy of a typical particle.
If I'm on an elevator that breaks loose and plummets down the shaft, can I avoid harm by jumping at the last second?
Answer:
It sounds like it would work but it wont. you need to lay down for the safest
Explanation:
6. As the lunar cycle progresses from the full moon to new moon the light will appear to _________.
7. The “growing light” that appears during the first half of the lunar cycle is referred to as __________.
8. The ___________ phase occurs at 21 days into the cycle and shows the left half of the moon illuminated.
9. In a crescent stage __________ than half of the Moon appears illuminated and during a gibbous stage __________ than half appears illuminated.
-I know this is asking for a lot but I really don’t know-
-I need the answers asap!-
-thanks in advance!-
Answer:
6. As the lunar cycle progresses from the full moon to new moon the light will appear to decrease
7. The “growing light” that appears during the first half of the lunar cycle is referred to as waxing.
8. The third quarter / 7th phase occurs at 21 days into the cycle and shows the left half of the moon illuminated.
9. In a crescent stage less than half of the Moon appears illuminated and during a gibbous stage more than half appears illuminated.
Explanation:
The "growing light" that appears during the first half of the lunar cycle is referred to as the "waxing phase" ,the first quarter phase occurs 21 days into the cycle and in the crescent stage, less than half of the moon appears illuminated.
What is the significance of the lunar cycle?It has much significance and is related to the moon, which is a natural navigation aid for mariners, providing light at night and it has an impact on the life cycles of animals and plants, including breeding and migration, and the gravitational pull of the moon and the sun causes the tides to rise and fall.
Hence, the "growing light" that appears during the first half of the lunar cycle is referred to as the "waxing phase" ,the first quarter phase occurs 21 days into the cycle and in the crescent stage, less than half of the moon appears illuminated.
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Which of the following is a binocular cue for depth perception?.
A binocular cue used to assess depth between two nearby objects is called retinal disparity.
What is the binocular cue for depth perception?The pictures that both eyes focus on to create stereopsis, or the feeling of depth, is known as binocular depth cues. Using binoculars, one may see the world in three dimensions.
Binocular depth signals can be classified as either retinal disparity or convergence. Convergence centers on a single object while using both eyes.
A binocular cue used to assess depth between two nearby objects is called retinal disparity. It accomplishes this by contrasting the various pictures from the two retinas. Because the distance between each eye is typically around two and a half inches, each eye sees different pictures.
Therefore, the retinal disparity is a binocular cue for depth perception.
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The given question is incomplete, so the correct is,
Which of the following is a binocular cue for the perception of distance?
a. visual cliff
b. linear perspective
c. relative motion
d. relative size
e. retinal disparity
A partial marine food web is shown.
image
Which of the following lists only organisms that are secondary consumers in this food web?
A.
euphausilds, sweeps, water fleas, sea urchins
B.
crabs, pilchards, blennies, snappers
C.
blennies, sweeps, tiger sharks, dolphins
D.
bull kelp, sweeps, water fleas, dinoflagellates
Crabs, pilchards, blennies and snappers are the examples of secondary consumers.
Crabs, pilchards, blennies and snappers are considered as secondary consumers because they feed on primary consumer which feed on producers such as plants and algae. Secondary consumer are those organisms which feed on herbivorous organisms or primary consumers.
They can feed on producers due to different digestive system so we can conclude that crabs, pilchards, blennies and snappers are the examples of secondary consumers.
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6. What are convection currents?
Where is the center of the cold air mass? ( name the region of the state near the center)
12. A primate's ability to hold objects in its hands/feet is an evolutionary development that allowed it to
A. walk upright B. use simple tools C. gather food D.create elaborate social systems
Answer:
Its B I took the test
Explanation:
How does pyruvate enter the mitochondrion.
Answer:
Pyruvate is a charged molecule, so in eukaryotic cells it must enter the mitochondrion via active transport, with the help of a transport protein. ... Pyruvate is broken down into three CO2 molecules, including the molecule of CO2 released during the conversion of pyruvate to acetyl CoA
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Which sentence best explains how a positive feedback loop affects climate
change?
A. As the number of plants increases, the amount of CO2 decreases.
B. High clouds have a high albedo and reflect solar energy back into
space.
C. As climate warms, CO2 increases because plants remove less of
it.
D. High precipitation results in increased plant growth, lowering CO2.
A positive feedback loop that affects climate is change as the number of plants increases, the amount of CO2 decreases.
The more trees the less CO2?Scientists agree that one of the most effective ways to absorb part of the CO2 from the atmosphere would be to plant more trees, as they use CO2 to grow and release oxygen, this action brings benefits to the entire environment.
With this information, we can conclude that A positive feedback loop that affects climate is change as the number of plants increases, the amount of CO2 decreases.
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