Because the smooth ER does not contain ____, it cannot produce proteins
a. Golgi bodies
b. mitochondria
c. ribosomes
d. DNA
e. lysosomes
ANSWER: c
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A genotype refers to
A) the alleles present in an individual. B) expression patterns of certain genes. C) the environmental components of a trait. D) the number of chromosomes that a person has.
Many male birds will expend a great deal of energy building nests. Females will mate with the males who build the
best nests. This is best described as an example of ____.
a. natural selection b. sexual selection c. runaway selection d. an invasive species e. disruptive selection
If you were to penetrate through the epidermal layer
of a root, you would next encounter the a. xylem. b. endodermis. c. cortex. d. phloem. e. pericycle.
Thyroid stimulating immunoglobin causes hyperthyroidism because it bypasses the effects of negative feedback on both the hypothalamus and pituitary and __________.
Fill in the blank(s) with the appropriate word(s).