Activation energy is similar to the "push" needed to start rolling a stalled car down a hill. How do enzymes fit into this analogy?
A) Enzymes increase the effort that's needed to start the car moving.
B) Enzymes decrease the effort that's needed to start the car moving.
C) Enzymes add a roadblock on the hill that the car will roll down.
D) Enzymes decrease the size and shape of the car that needs to be moved.
B
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What information is used to calculate the age-specific fertility rate, mx?
A. the net reproductive rate of females B. total number of offspring born to females within a reproductive age class C. the per capita growth rate of all females D. number of female offspring born to females within a reproductive age class E. the average age of first reproduction for females
Agglutination by the anti-A antibody will express as the blood type ________
a. A b. O c. B d. AB e. None of these choices.
What is the advantage of producing a seed over a spore?
A. Seeds are diploid, and can grow directly into a sporophyte. B. Seeds are haploid, and can grow directly into a sporophyte. C. Seeds are diploid, and can grow directly into a gametophyte. D. Seeds are haploid, and can grow directly into a gametophyte. E. Producing seeds over spores is a disadvantage.
Structures that have no apparent function but had a function in ancestral species are
A. the fossil record. B. vestigial structures. C. development. D. the molecular record. E. homology.