Which macromolecule is the main component of all cell membranes?
a. DNA
b. phospholipids
c. carbohydrates
d. steroids
e. glucose
Ans: b. phospholipids
Biology & Microbiology
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Despite their seemingly simple anatomy and radial symmetry, ______ are a type of deuterostome, and closely related to the chordates. (Check all that apply.)
_____ Jellyfish _____ Sea urchins _____ Sea stars _____ Acoel flatworms _____ Anemones
Biology & Microbiology
What is the source of electrons for carbon fixation in plants?
a. O2 b. CO2 c. H2O d. H+ e. C6H12O6
Biology & Microbiology
Based on the temperature range and precipitation, the area on the accompanying figure labeled as 3 represents which of the following biomes?
a. savanna
b. temperate deciduous forest
c. temperate rain forest
d. taiga
e. tundra
Biology & Microbiology
Mitosis occurs in germ cells throughout life.
a. true b. false
Biology & Microbiology