Which are main colors of light absorbed by rod
cells?
a. red, green, blue
b. blue, yellow, red
c. yellow, orange, brown
d. green, blue, white
e. none of these colors of light are absorbed
by rod cells
E
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To counter the ingestion of excess salts, marine teleost fish have specialized cells in their gills that pump _____ ions into the surrounding seawater
As these ions leave the fishes' bodies, they create an electrical gradient that is balanced when _____ ions leave their bodies as well. A. chloride; sodium B. potassium; magnesium C. calcium; sodium D. sodium; chloride E. magnesium; potassium
The correct sequence in body forms and life stages occurring in alternation of generations in green algae protists is
A. sporophyte - meiosis division - mitotic division - spores - gametophytes - fertilization - gametes - zygote. B. gametophytes - gametes - sporophyte - meiosis division - spores - mitotic division - fertilization - zygote. C. sporophyte - meiosis division - spores - mitotic division - gametophytes - gametes - fertilization - zygote. D. gametes - meiosis division - spores - mitotic division - gametophytes - sporophyte - fertilization - zygote. E. gametophytes - gametes - sporophyte - mitotic division - spores - meiosis division - fertilization - zygote.
When sodium ions diffuse into the axon’s
cytoplasm, the cytoplasm becomes
a. more positively charged. b. more negatively charged. c. neutrally charged. d. impermeable to more sodium ions. e. more than one of these
Which of the following is a type of epithelial
tissue that is one layer thick?
a. stratified b. dense connective c. loose connective d. simple e. more than one of these