The seed is produced by the maturation of the
a. embryo.
b. ovule.
c. ovary.
d. zygote.
e. pollen.
B
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In the amniote egg diagram shown, the item labeled "1" is the
a. yolk sac. b. chorion. c. allantois. d. amnion. e. albumin.
Which of the following would occur if excess sweating led to dehydration and high salt concentration in the bloodstream?
A. The hypothalamus would signal the kidneys to release more salt into the urine. B. The hypothalamus would signal the kidneys to absorb more salt from the urine. C. The liver would signal the kidneys to absorb more salt from the urine. D. The liver would signal the kidneys to release more salt from the urine. E. None of the answer choices is correct.
Where in the human body can you find T cells?
A. Bone marrow D. Spleen B. Blood E. All of these C. Thymus glands
Which of the following statements about a gram- cell wall is FALSE?
A. It maintains the shape of the cell B. It has a thin layer of peptidoglycan C. It has an outer membrane of lipids D. It has teichoic acids