Q: Which equation correctly represents the net ATP yield from glycolysis?

$$\text{Glucose} + 2\text{ADP} + 2\text{P}_i + 2\text{NAD}^+ \rightarrow 2\text{Pyruvate} + 2\text{ATP} + 2\text{NADH} + 2\text{H}_2\text{O}$$

Question 1

Which of the following best describes the primary difference between endocrine and exocrine glands?

Accepted Answer

Endocrine glands secrete hormones directly into the bloodstream, while exocrine glands secrete their products into ducts that lead to body surfaces or cavities.

Question 2

A patient presents with symptoms of excessive thirst, frequent urination, and unexplained weight loss. Which homeostatic imbalance is most likely responsible, and what are the three cardinal signs?

Accepted Answer

Diabetes Mellitus; polyuria, polydipsia, and polyphagia

Question 3

Which hormone is released in response to low blood calcium levels, and what is its primary function?

Accepted Answer

Parathyroid hormone (PTH); increases blood calcium by stimulating osteoclast activity and enhancing calcium reabsorption in the kidneys

Question 4

Which of the following best explains the mechanism by which steroid hormones exert their effects on target cells?

Accepted Answer

Steroid hormones diffuse through the plasma membrane and bind to intracellular receptors, activating specific genes.

Question 5

A patient with hyperthyroidism is likely to experience which of the following symptoms?

Accepted Answer

Increased metabolic rate, weight loss, and heat intolerance

Question 6

Which equation correctly represents the net ATP yield from glycolysis?

Accepted Answer

$$	ext{Glucose} + 2	ext{ADP} + 2	ext{P}_i + 2	ext{NAD}^+ ightarrow 2	ext{Pyruvate} + 2	ext{ATP} + 2	ext{NADH} + 2	ext{H}_2	ext{O}$$

Question 7

During the absorptive state, which hormone is primarily responsible for promoting storage of nutrients, and what is its main effect?

Accepted Answer

Insulin; stimulates glucose uptake and storage as glycogen in liver and muscle cells

Question 8

Which of the following best describes the structural modification of the small intestine that enhances absorption?

Accepted Answer

Presence of villi and microvilli increases surface area for absorption.

Question 9

Which hormone is released by the posterior pituitary and what is its primary effect?

Accepted Answer

Antidiuretic hormone (ADH); increases water reabsorption in the kidneys

Question 10

Which of the following is a correct definition of metabolism?

Accepted Answer

Metabolism is the sum of all biochemical reactions occurring in the body, including both catabolism and anabolism.

Question 11

Which of the following best describes the role of bile in digestion?

Accepted Answer

Bile emulsifies fats, increasing their surface area for enzymatic breakdown.

Question 12

Which equation best represents the overall reaction for aerobic cellular respiration?

Accepted Answer

$$	ext{C}_6	ext{H}_{12}	ext{O}_6 + 6	ext{O}_2 ightarrow 6	ext{CO}_2 + 6	ext{H}_2	ext{O} + 36	ext{ATP}$$

Question 13

Which of the following is NOT a function of the liver?

Accepted Answer

Secretion of digestive enzymes into the duodenum

Question 14

Which layer of the alimentary canal is primarily responsible for absorption of nutrients?

Accepted Answer

Mucosa

Question 15

Which of the following best describes the difference between catabolism and anabolism?

Accepted Answer

Catabolism breaks down molecules to release energy, while anabolism builds molecules using energy.

Question 16

Which of the following is a major function of the large intestine?

Accepted Answer

Absorption of water and elimination of feces

Question 17

Which hormone is secreted by the pineal gland and what is its primary function?

Accepted Answer

Melatonin; regulates sleep-wake cycles

Question 18

Which of the following best describes the effect of glucagon released by the pancreas?

Accepted Answer

Glucagon increases blood glucose by stimulating glycogen breakdown in the liver.

Question 19

Which of the following is a correct definition of mastication?

Accepted Answer

Mastication is the mechanical process of chewing food in the mouth.

Question 20

Which of the following best describes the interaction known as 'permissiveness' between hormones?

Accepted Answer

One hormone cannot exert its full effect without the presence of another hormone.

ANP College Course Study Guide: Endocrine, Digestive, and Metabolism Systems

Study Guide - Practice Questions

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