which of the following substances is not a product of cellular respiration
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ATI TEAS 7

ATI TEAS 7 Science Practice Test

1. Which of the following substances is NOT a product of cellular respiration?

Correct answer: C

Rationale: The correct answer is C. Oxygen is not a product of cellular respiration; instead, it is consumed during the process. During cellular respiration, glucose is broken down in the presence of oxygen to produce energy in the form of ATP, carbon dioxide, and water. Carbon dioxide is released as a waste product, water is a byproduct of the chemical reactions, and ATP is the energy currency used by cells. Therefore, options A, B, and D are all products or outcomes of cellular respiration, while oxygen is a reactant.

2. What is the name of the long bone found in the upper arm?

Correct answer: C

Rationale: The correct answer is the humerus. The humerus is the long bone located in the upper arm, between the shoulder and elbow. Option A, Femur, is incorrect as it is the long bone found in the thigh. Option B, Tibia, is incorrect as it is a long bone found in the lower leg. Option D, Radius, is incorrect as it is a bone located in the forearm, not the upper arm.

3. Which type of cells are found in the hair bulb and are responsible for hair growth?

Correct answer: C

Rationale: The correct answer is C: Epithelial. The hair bulb contains actively growing epithelial cells responsible for hair growth. Basal cells are located in the basal layer of the epidermis, not specifically in the hair bulb, making choice A incorrect. Epidermal cells are part of the outer layer of the skin, so choice B is incorrect. Merkel cells are related to touch sensations in the skin, not hair growth, making choice D incorrect.

4. Which of the following describes a vector quantity?

Correct answer: D

Rationale: Velocity is a vector quantity as it encompasses both magnitude (speed) and direction. When describing the motion of an object, it is crucial to consider both aspects. Speed (option A) is a scalar quantity, representing only the magnitude of motion without indicating direction. Distance (option B) is also a scalar quantity, indicating the extent of an object's motion without considering direction. Mass (option C) is a scalar quantity, measuring the amount of matter in an object and not involving direction.

5. Which transport mechanism uses vesicles to move materials out of the cell?

Correct answer: D

Rationale: Exocytosis is the transport mechanism that uses vesicles to move materials out of the cell. Vesicles carry substances to the cell membrane, fuse with it, and release their contents outside the cell. This process is essential for secreting molecules such as hormones, enzymes, or neurotransmitters. Endocytosis, on the other hand, is the process of bringing materials into the cell by engulfing them in vesicles. Active transport involves the movement of molecules across a cell membrane against their concentration gradient, requiring energy. Diffusion is the passive movement of molecules from an area of higher concentration to an area of lower concentration.

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