The amount of rain an area gets is part of an organism's
A. biotic factors.
B. abiotic factors.
C. community.
D. succession.
B. abiotic factors.
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DNA contains the template needed to copy itself, but it has no catalytic activity in cells. What catalyzes the formation of phosphodiester bonds between adjacent nucleotides in the DNA polymer being formed?
A) ribozymes B) DNA polymerase C) ATP D) deoxyribonucleotide triphosphates
The equation, C6H12O6 + 6O2 ? 6CO2 + 6H2O (ATP + Heat), describes which of the following processes?
A. photosynthesis B. cell respiration C. cell fermentation D. glycolysis E. anaerobic metabolism
Which of the following is not one of the principal types of surfaces used by animals to facilitate gas
exchange? a. bronchial tubes b. body surface c. gills d. lungs e. tracheal tubes
Which of the following statements most directly supports the claim that different species of organisms use different metabolic strategies to meet their energy requirements for growth, reproduction, and homeostasis?
(A) During cold periods pond-dwelling animals can increase the number of unsaturated fatty acids in their cell membranes while some plants make antifreeze proteins to prevent ice crystal formation in tissues. (B) Bacteria lack introns while many eukaryotic genes contain many of these intervening sequences. (C) Carnivores have more teeth that are specialized for ripping food while herbivores have more teeth that are specialized for grinding food. (D) Plants generally use starch molecules for storage while animals use glycogen and fats for storage