Which of the following are defenses against herbivory?

A. nicotine
B. chlorophyll
C. terpenoids
D. spines


Answer: D

Biology & Microbiology

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An enzyme that attaches a phosphate group to another molecule is called a _______________

A. phosphatase B. phosphorylase C. kinase D. cyclase

Biology & Microbiology

In human females, what process causes milk production?  

A.  Stimulation of the alveoli of the mammary glands by prolactin from the anterior pituitary gland. B.  Stimulation of the alveoli of the mammary glands by oxytocin from the anterior pituitary gland. C.  Stimulation of the alveoli of the mammary glands by prolactin from the posterior pituitary gland. D.  Stimulation of the alveoli of the mammary glands by oxytocin from the posterior pituitary gland. E.  Stimulation of the alveoli of the mammary glands by LH from the anterior pituitary gland.

Biology & Microbiology

Which statement is true?

a. The movement of solvent occurs from a hypotonic solution to an isotonic solution. b. The net movement from an isotonic to a hypotonic solution involves the movement of solute molecules only. c. The concentration of the solute is greater in an isotonic solution than in a hypertonic solution. d. The concentration of the solvent is greater in a hypertonic solution than in an isotonic solution. e. Osmosis involves only hypertonic solutions.

Biology & Microbiology

In which growth phase do bacteria grow exponentially?

A) lag phase B) log phase C) acculturation phase D) stationary phase E) habituation phase

Biology & Microbiology