Which of the following complex carbohydrates is listed with its correct function?
a. Starch: primary energy-storage molecule in animals
b. Amylose: main component of plant starch
c. Cellulose: structural component of plant cell walls
d. Chitin: constituent of bacterial cell walls
Answer: c. Cellulose: structural component of plant cell walls
You might also like to view...
With injury, illness, anxiety, or starvation
a. cortisol levels in the blood increase dramatically. b. the adrenal medulla releases norepinephrine and epinephrine. c. the respiratory rate increases. d. the fight or flight response is activated. e. all of these occur
Which of the following statements about sperm entry is true?
a. The fertilization cone formed by microvilli of the egg membrane contracts and draws the sperm inward. b. The egg phagocytizes the acrosome of the sperm so it can enter the cell. c. The cilia on the egg membrane beat and sweep the sperm inside. d. The sperm releases calcium ions, which make the egg membrane permeable to its entry. e. The egg secretes bindin protein, which allows sperm penetration.
Simberloff and Wilson conducted a well-known experiment in which they fumigated small mangrove islands and observed the recovery through time of arthropod communities on these islands. They found that mangrove islands tended to recover to about the same number of species present pre-fumigation. Which proposition of the equilibrium theory of island biogeography did this observation support?
A) Islands distant from the mainland have fewer species than islands close to the mainland. B) Small islands have fewer species than large islands. C) Each island has an equilibrium number of species.
What role does the corpus luteum play in maintaining the endometrium?
What will be an ideal response?