what is the role of bile in digestion

ATI TEAS 7

Practice TEAS Science Test

1. What is the role of bile in digestion?

A. To break down carbohydrates
B. To emulsify fats
C. To neutralize stomach acid
D. To absorb proteins

Correct answer: B

Rationale: Bile emulsifies fats, breaking them down into smaller droplets for easier digestion.

2. What property of a wave determines the loudness of sound when heard by the human ear?

A. Frequency
B. Amplitude
C. Wavelength
D. Velocity

Correct answer: B

Rationale: The amplitude of a wave determines the loudness of sound when heard by the human ear. The greater the amplitude of a sound wave, the louder the sound will be perceived. Frequency (Choice A) refers to the number of wave cycles in a given time period. Wavelength (Choice C) is the distance between two corresponding points on a wave. Velocity (Choice D) is the speed at which the wave travels and does not directly affect the loudness of sound perceived by the human ear.

3. Which statement accurately describes cytokinesis in animal cells?

A. Which statement accurately describes cytokinesis in animal cells?
B. A cell plate forms in the center of the dividing cell, eventually separating the cytoplasm into two daughter cells.
C. A cell plate forms in the center of the dividing cell, eventually separating the cytoplasm into two daughter cells.
D. The nucleus elongates and pulls apart, physically dividing the cytoplasm into two.

Correct answer: B

Rationale: A) This statement is a duplicate of option C and does not accurately describe cytokinesis in animal cells. B) In animal cells, during cytokinesis, a cleavage furrow forms in the center of the dividing cell. This furrow deepens and eventually pinches the cytoplasm into two daughter cells. This process is distinct from plant cells, where a cell plate forms. C) This statement is a duplicate of option A and does not accurately describe cytokinesis in animal cells. D) This statement describes the process of nuclear division (mitosis) rather than cytokinesis, which is the division of the cytoplasm.

4. What is the cellular function of cilia and flagella?

A. Cilia and flagella are responsible for cell movement.
B. Cilia and flagella synthesize proteins.
C. Cilia and flagella help protect the cell from its environment.
D. Cilia and flagella have enzymes that help with digestion.

Correct answer: A

Rationale: The correct answer is A: Cilia and flagella are responsible for cell movement. Cilia and flagella are specialized structures found on the surface of many types of cells. They are involved in the movement of the cell itself or in moving substances around the cell. This movement helps in various functions such as propulsion, moving fluids, and sensing the environment. Choices B, C, and D are incorrect. Cilia and flagella are not involved in synthesizing proteins, protecting the cell from its environment, or aiding in digestion. Their primary function is related to cell movement and cellular transport.

5. Which of the following immune cells are part of the innate immune response?

A. B-cells
B. Cytotoxic T-cells
C. Natural Killer cells
D. Antigen-Presenting Cells

Correct answer: C

Rationale: Natural Killer cells are a crucial component of the innate immune response. They play a significant role in defending against infected or cancerous cells through their ability to identify and kill abnormal cells. B-cells (Choice A) and Cytotoxic T-cells (Choice B) are part of the adaptive immune response, which involves a more specific and targeted response to pathogens. Antigen-Presenting Cells (Choice D) are also part of the adaptive immune response, where they present antigens to activate other immune cells.