Which organelle is most abundant in cardiac muscle cells?
A) Golgi complexes
B) Plastids
C) Lysosomes
D) Mitochondria
E) Smooth ER
D
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At present there are four phyla in the domain Bacteria
Indicate whether the statement is true or false.
In a certain breed of chicken, an incomplete dominant gene controls color. The homozygous black (BB), when crossed
with the homozygous splashed-white (bb), produces an intermediate gray color pattern referred to as blue. A second gene controls the shape of the comb. The dominant allele (R) produces rose, whereas the recessive allele (r) produces single. Give the F1 and F2 genotypic and phenotypic ratios of a cross between a true-breeding black with a single comb and a true-breeding splashed-white with a rose comb. What will be an ideal response?
The role of maternal effect genes in Drosophila is to:
a. code for the production of yolk proteins. b. prepare the female fly for reproduction. c. control the early stages of Drosophila development. d. control the development of the pupa. e. control the shape and size of the eggs produced.
A higher rate of eye infections can be expected from a person who ________.
A. cannot produce tears B. has a vitamin deficiency C. is very young D. wears glasses