Which structure is found in both plant and animal cells?
A) chloroplasts
B) mitochondria
C) a large central vacuole containing fluid
D) cell wall surrounding the plasma membrane
Answer: B
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All animal cells are diploid except
A. gametes. B. muscle cells. C. nerve cells. D. germ-line cells. E. somatic cells.
Which of these waves has the longest wavelength?
a. blue visible light b. gamma rays c. UV rays d. x-rays e. red visible light
In this generalized illustration of
gametogenesis, the four cells in the right column should be labeled a. sperm. b. eggs. c. ovum and three polar bodies. d. secondary spermatocytes. e. diploid.
Consider the life cycle shown in Figure 27-2. If the boxes labeled “n” and “2n” represent multicellular structures, this life cycle could be representative of all of the following except:
a. ferns
b. club mosses.
c. horsetails.
d. hornworts.
e. algae