Cholesterols are typically found in ________ cytoplasmic membranes.
A. eukaryotic
B. bacterial
C. archaeal
D. prokaryotic
E. both eukaryotic and prokaryotic
Answer: A
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If a mutation prevented the formation of lignin, which tissue would be most affected?
a. vascular cambium b. parenchyma c. collenchyma d. sclerenchyma e. mesophyll
A glucose molecule that is metabolized via aerobic respiration has been completely broken down and
released as CO2 by the end of: a. fermentation. b. the electron transport chain. c. glycolysis. d. ATP synthesis in the mitochondria. e. the citric acid cycle.
If you cross two pea plants, one with green peas and the other with yellow peas, you find all of the offspring have yellow peas. You conclude the yellow parent was Select one:
a. homozygous for the recessive allele. b. homozygous for the recessive gene. c. homozygous for the dominant gene. d. homozygous for the dominant allele. e. heterozygous.
When a substance moves across the plasma membrane along a concentration gradient at a rate faster than would be expected by simple diffusion alone but without the expenditure of metabolic energy, the process is best described as
a. facilitated diffusion b. osmosis c. active transport d. pinocytosis e. the work of an ion pump