Which of the following body systems breaks down proteins into amino acids?

A. Digestive

B. Excretory

C. Circulatory

D. Endocrine

Answer Explanation:

The digestive system breaks down complex food substances into small and less complex absorbable compounds. Proteins, for instance, are broken down to constituent amino acids through a digestion process that combines mastication and enzymatic breakdown.

Therefore, the Correct Answer is A.

Q #1: An experienced mountaineer decides to climb Mount Everest, taking the same route in the same season and with similar materials and equipment used in a fatal 1924 expedition Which of the following is the scientific purpose of such a climb?

A. To measure the oxygen levels at high elevation

B. To assess why the earlier expedition failed

C. To show that modem technology makes climbing safer

D. To identify routes that can be explored in future climbs

Answer Explanation

The experienced mountain climber is replicating the conditions of the past expedition to understand why that earlier attempt was unsuccessful.
Q #2: Which of the following types of cells stimulates other immune cells to attack and destroy foreign agents?

A. Cytotoxic T-cells

B. Plasma cells

C. Natural killer cells

D. Helper T-Cells

Answer Explanation

Helper T cells are important cells that stimulate the action of other immune cells. For instance, they not only help activate B cells to secrete antibodies and macrophages to destroy ingested microbes, but they also help activate cytotoxic T cells to kill infected target cells.
Q #3: In order to determine the effects of energy drinks on women's running speed, researchers gave 300 women an energy drink and then recorded the time it took each of them to run 2 miles. After collecting the results, researchers concluded that energy drinks increase the speed of running in Which of the following further tests would best help to support this conclusion?

A. Repeat the same experiment, using 300 men

B. Repeat the experiment giving half of the women water and the other half the energy drink

C. Repeat the experiment giving the women two different energy drinks

D. Repeat the experiment, having half of the women run 2 miles and the other half run 5 miles

Answer Explanation

Conducting the experiment with half the women taking water and the other half taking an energy drink creates a study and experimental group, which can allow for comparison and conclusion. The researchers can compare the effects of the energy drink directly with a baseline, and this helps to establish a cause-and-effect relationship and provides stronger evidence to support their conclusion.

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Which of the following body systems breaks down proteins into amino acids?

More Questions on TEAS 7 Science

Q #1: An experienced mountaineer decides to climb Mount Everest, taking the same route in the same season and with similar materials and equipment used in a fatal 1924 expedition Which of the following is the scientific purpose of such a climb?

Answer Explanation

Q #2: Which of the following types of cells stimulates other immune cells to attack and destroy foreign agents?

Answer Explanation

Answer Explanation

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