In general, eukaryotic cells are about ________ times larger than bacterial or archaeal cells.
A. 50
B. 2
C. 10
D. 1000
Answer: C
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In humans, ability to roll the tongue (R) is dominant to being unable to roll (r). Having freckles (F) is dominant to having no freckles (f)
If a woman heterozygous for both traits married a man with no freckles who couldn't roll his tongue, what is the probability that they would have a freckled, tongue-rolling child? A. 9/16 B. 3/16 C. 1/16 D. 3/4 E. 1/4
Filtration occurs in which section of mammalian nephrons?
a. glomerulus b. loops of Henle c. proximal tubules d. distal tubules e. peritubular capillaries
Which of the following is(are) NOT trend(s) of
vertebrate evolution? a. conversion of the support for locomotion from the notochord to the vertebral column b. expansion of the nerve cord to form the brain and spinal cord c. changes in the respiratory system from gills to lungs with accompanying changes in the circulatory system d. the development of fewer, more efficient chambers in the heart e. modification of limbs that allowed for more efficient movement
When a plant responds to external stimuli, such as light, gravity, or touch by directional growth, these
responses are referred to as: a. turgor movements. b. sleep movements. c. nastic movements. d. circadian rhythms. e. tropisms.