semen the fluid that carries sperm is produced by which of the following structures in the male reproductive system
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ATI TEAS 7

TEAS 7 science practice

1. Which of the following structures in the male reproductive system produces the fluid that carries sperm?

Correct answer: D

Rationale: The seminal vesicles in the male reproductive system are responsible for producing the fluid that carries sperm. These glands contribute a significant portion of the semen's volume, providing nutrients and protection for the sperm, which helps in their motility and survival. The testes are responsible for producing sperm cells, not the fluid that carries them. The scrotum is the external sac that holds the testes and helps regulate their temperature but does not produce the fluid. The prostate gland produces a milky fluid that helps nourish and protect sperm but is not the main structure responsible for producing the fluid that carries sperm.

2. What is the process of breaking down lipids into fatty acids and glycerol called?

Correct answer: A

Rationale: - Lipolysis is indeed the correct answer. It is the process of breaking down lipids (fats) into fatty acids and glycerol. This process occurs in adipose tissue and is important for releasing stored energy in the form of fatty acids. - Gluconeogenesis is the process of synthesizing glucose from non-carbohydrate sources like amino acids and glycerol, not breaking down lipids. - The Krebs cycle (also known as the citric acid cycle) is a series of chemical reactions that occur in the mitochondria to generate energy through the oxidation of acetyl-CoA derived from carbohydrates, fats, and proteins. - Oxidative phosphorylation is the final stage of cellular respiration where ATP is produced through the transfer of electrons in the electron transport chain. It is not specifically related to the breakdown of lipids into fatty acids and glycerol.

3. What is the process by which cells respond to external stimuli, such as chemicals, temperature, or touch, called?

Correct answer: A

Rationale: Signal transduction is the correct answer. It is the process by which cells respond to external stimuli like chemicals, temperature, or touch. When a cell receives a signal from its environment, it triggers a series of molecular events leading to a specific cellular response. This process involves transmitting signals from the cell surface to the interior, triggering various cellular activities. Homeostasis, on the other hand, refers to an organism's ability to maintain internal stability in response to external changes. Adaptation involves an organism adjusting to its environment over time through genetic changes or behavioral modifications, which is distinct from the process of cells responding to immediate external stimuli. Metabolism, although essential for cellular functions, is not specifically about cells responding to external stimuli but rather the biochemical processes involved in energy production, storage, and utilization within cells.

4. What is the primary function of the lymphatic system?

Correct answer: C

Rationale: The correct answer is C: 'To fight infection and remove excess fluid.' The lymphatic system plays a crucial role in the body's immune response by fighting infections through lymphocytes and removing excess fluid from tissues, maintaining fluid balance. It does not primarily transport oxygen, filter blood, or transport hormones. While the lymphatic system is involved in lipid absorption and transport, its primary functions are related to immunity and fluid balance.

5. Which of the following organelles is responsible for food and water storage in the cell?

Correct answer: D

Rationale: The correct answer is D, Vacuole. Vacuoles are membrane-bound organelles responsible for the storage of various substances such as food, water, and waste in a cell. They help maintain the cell's turgidity and regulate the movement of substances within the cell. Choice A, Centriole, is involved in cell division and organization of microtubules but not food and water storage. Choice B, Lysosome, contains digestive enzymes for breaking down cellular waste material and foreign invaders. Choice C, Ribosome, is involved in protein synthesis rather than storage of food and water.

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