BIOLOGY HIGH SCHOOL

Rick’s class plans to study the effect of eating different breakfast foods on grades in morning classes. Students in the class will be the test subjects for the investigation. Which of the following would most likely make the results of the experiment invalid?

Answers

Answer 1
Answer: Some of the things that would make the experiment invalid would be, if there was a variation in the behavior of the class with respect to food - for example, if some people ate their breakfast earlier than the others. This then would mean that some students would have already digested their breakfast during the morning classes and the others would still be digesting.
Answer 2
Answer:

Some students eat breakfast two hours before other students do.

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Respiration is a vital function of the body.' Justify the statement

Answers

Every cell in the body requires energy to grow, repair itself and carry out reproduction...
 All functions of the cells are performed by the supply of energy...
this energy is released in the process of respiration..by the break down of food molecules 
.without it no function can be performed in the body so  respiration is vital function of the body....

this term describes the loss of electrons that occurs during metabolism, the process by which your body breaks down and builds up molecules.

Answers

The answer is most likely oxidize.  During oxidation reduction reactions, the loss of elections is called oxidation while the the gaining of elections is called reduction.

Final answer:

The term describing the loss of electrons during metabolism is oxidation. In metabolic processes like cellular respiration, substrates are oxidized to release energy, playing a critical role in sustaining life.

Explanation:

The term that describes the loss of electrons that occurs during metabolism, the process by which your body breaks down and builds up molecules, is known as oxidation. Whenever a substrate is oxidized, it loses electrons. For example, in the process of cellular respiration, glucose is oxidized to carbon dioxide, and oxygen is reduced to water. The transferred electrons are carried by certain molecules to other parts of the cell to release energy used for metabolic functions. Therefore, metabolism and oxidation play crucial roles in our body to sustain life.

Learn more about Oxidation here:

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13. Which of the following can result in irregularities leading to cancer? A. The body utilizing growth factors in development B. The body failing to respond to signals that slow the cell cycle C. The body using cyclins to regulate the timing of the cell cycle D. The body programming its cells to die

Answers

im going to say b.... hope it helped

Which of the following statements is true?A) cool air is less dense than warm air.
B) Sound does not require a medium for travel.
C) Magnetism is caused by the spinning motion of electrons.
D) Electricity flows from positive to negative areas.

Answers

The statement that is true is C.

Answer:

Magnetism is caused by the spinning motion of electrons. is true :)

Explanation:

Openings between _____ cells create pores in the leaf epidermis that play a critical role in photosynthesis by allowing diffusion of atmospheric CO2 into a leaf's interior.

Answers

Answer:

Guard

Explanation:

The opening between guard (pores) cells is known as stomata. The stomata helps in diffusion of atmospheric CO2 into leaf's interior and also involved in loss of water by plant leaves through transpiration. The opening and closing of stomata is controlled by guard cells.

Guard cells control the opening and closing of stomata by becoming turgid or flaccid because of potassium ions. The water potential decreases by increasing the solute concentration and water always flow from higher potential to lower potential. Remember maximum water potential is zero.

When potassium ions concentration increases inside the guard cells, water follow the potassium ions and guard cells become turgid which cause the opening of stomata. On the other side when the potassium ions concentration decreases inside the guard cells the water leaves the guard cells and guard cells become flaccid causing closing of stomata.

How has the U.S. Fish and Wildlife Service positively impacted ecosystems?

Answers

they have preserved areas of pollution free, ecosystems and kept them that way. eco systems are damaged by the human footprint. Also, they keep the predators and prey in balance through controlled hunting to make sure there is a balance.

the answer is b on e2020 i chose d & got it wrong
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