Answer the question using the accompanying figure. During metamorphosis of a tadpole, 'A' is the ____
a. thyroid
b. parathyroid
c. hypothalamus
d. adrenal cortex
e. posterior pituitary
ANSWER: c
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Which of the following are released from the posterior pituitary?
a. aldosterone and cortisol b. insulin and glucagon c. oxytocin d. thyroxin and calcitonin e. ACTH and FSH
Roots that arise from branches or vertical stems, and that are used to support a plant in an upright position, are referred
to as: a. prop roots. b. contractile roots. c. pneumatophores. d. lateral roots. e. tap roots.
What change is occurring in this figure?
A) Chlorine is losing an electron.
B) Sodium is becoming negatively charged.
C) Sodium is filling its second electron shell.
D) Chlorine is filling its third electron shell.
Which of the following membrane lipids does not contain a fatty acid tail?
(a) phosphatidylcholine (b) a glycolipid (c) phosphatidylserine (d) cholesterol