Chapter 5

Choose from the terms below about the nitrogen cycle. (A) Nitrogen-fixing bacteria (B) Denitrifying bacteria (C) Nitrifying bacteria Convert nitrates into free nitrogen in the atmosphere

Match the hormone to the correct gland from which it comes. (A) Thyroxin (B) Oxytocin (C) Insulin (D) Thyroid-stimulating hormone (E) Adrenaline Adrenal medulla

Choose from the terms below about the nitrogen cycle. (A) Nitrogen-fixing bacteria (B) Denitrifying bacteria (C) Nitrifying bacteria Convert free nitrogen from the atmosphere into the ammonium ion

Which of the following shows the correct order of the biomes as you move from the equator to the North Pole in the western hemisphere? (A) Tropical rain forest-desert-temperate rain forest-taiga-tundra (B) Tundra- taiga- temperate deciduous forest-desert-tropical rain forest (C) Desert- -taiga- tundra- temperate deciduous forest-tropical rain forest (D) Tundra- temperate deciduous forest-taiga-desert-tropical rain forest (E) Desert- -tropical rain forest-temperate deciduous forest-taiga-tundra

Match the hormone and its function. Use each letter once only. (A) Raises blood sugar (B) Lowers blood sugar (C) Stimulates the ovaries (D) Stimulates the uterine lining (E) Stimulates growth of long bones Progesterone

Match the hormone and its function. Use each letter once only. (A) Raises blood sugar (B) Lowers blood sugar (C) Stimulates the ovaries (D) Stimulates the uterine lining (E) Stimulates growth of long bones Glucagon

Match the hormone and its function. Use each letter once only. (A) Raises blood sugar (B) Lowers blood sugar (C) Stimulates the ovaries (D) Stimulates the uterine lining (E) Stimulates growth of long bones \(\mathrm{FSH}\)

Match the hormone and its function. Use each letter once only. (A) Raises blood sugar (B) Lowers blood sugar (C) Stimulates the ovaries (D) Stimulates the uterine lining (E) Stimulates growth of long bones Insulin

All of the following are correct about the endocrine system EXCEPT (A) endocrine glands are ductless (B) parathormone is the fight-or-flight hormone (C) the islet cells in the pancreas produce both glucagon and insulin (D) ecdysone controls metamorphosis in some insects (E) polypeptide hormones must bind with a receptor and trigger a secondary messenger

All of the following hormones are produced by the anterior pituitary EXCEPT (A) glucagon (B) follicle-stimulating hormone (C) human growth hormone (D) thyroid-stimulating hormone (E) adrenocorticotropic hormone

The main target of antidiuretic hormone is the (A) liver (B) kidney (C) heart (D) thyroid (E) spleen

Tropic hormones (A) are secreted by the thyroid (B) are secreted by the liver (C) are released by the hypothalamus (D) are released only in females (E) are hormones that stimulate other glands

Which of the following is correct about the kidney? (A) Filtration occurs in the Bowman's capsule and is nonselective. (B) Filtration is selective and occurs by active transport. (C) Filtration is selective and occurs by passive transport. (D) Reabsorption is selective and occurs by passive transport only. (E) Reabsorption occurs in the glomerulus.

In humans, urea is (A) produced in the kidney and excreted by the skin (B) produced in the liver and excreted mainly by the kidneys (C) produced in the kidney from the metabolism of fats (D) produced in the lungs as a by-product of exhaling (E) accumulates in our bodies as we age

Which is true about the human circulatory system? (A) The pH varies throughout the day and night. (B) Erythrocytes clot blood. (C) Leukocytes fight germs. (D) Blood type O is dominant. (E) Humans have an open circulatory system.

ADH most directly affects the (A) glomerulus (B) Bowman's capsule (D) lacteal (E) collecting tubule of the nephron

The following are all correct about the nervous system EXCEPT (A) dendrites are sensory (B) axons carry an impulse away from the cell body (C) the parasympathetic nervous system is associated with fight-or-flight (D) the central nervous system consists of the brain and spinal cord (E) the interneuron is located in the spinal cord

Which would occur if the parasympathetic system were stimulated? (A) Increase in blood sugar (B) Increase in digestion (C) Increase in breathing rate (D) Increase in adrenaline (E) Increase in epinephrine

The walls of arteries consist of (A) striated muscle and are under voluntary control (B) striated muscle and are not under voluntary control (C) smooth muscle and are controlled by the somatic nervous system (D) smooth muscle and are controlled by the autonomic nervous system (E) a mixture of striated and smooth muscle under control of the autonomic nervous system