EVPP 110 Lecture – Exam #1 - Practice Questions I. Levels of ...

EVPP 110 Lecture – Exam #1 - Practice Questions
c. a better induced fit
d. more permanent binding through intimate total contact
12. At the conclusion of an enzyme catalyzed reaction
a. its active site closes up and cannot bind to more substrate
b. it frees itself from the product and is ready to be reused
c. it must be resynthesized from its amino acids
d. it must be transported from outside the cell
13. The ability of an enzyme to catalyze a reaction can be affected by chemical and physical
factors such as
a. temperature
b. pH
c. salt concentration
d. binding of specific regulatory molecules
e. all of the above
14. Which of the following organisms are autotrophs?
a. some bacteria
b. algae
c. plants
d. some protozoans
e. all of the above
15. At least 90% of organisms on the earth are heterotrophs. Examples include all of the
following except
a. animals
b. most protists
c. fungi
d. plants
e. most eubacteria
1. Spontaneous origin proponents hypothesize that life evolved from inanimate matter. According to this
view, the force leading to life was
A. selection
B. resistance to radiation
C. ability to live on land
D. ability to reproduce
E. all of the above
18. The oldest microfossils are of
A. bacteria
B. eukaryotes
C. insects
D. pollen grains
E. small animals
19. Life apparently originated on earth about
A. 1 million years ago
B. 6000 years ago
C. 4.5 billion years ago
D. 8 billion years ago
E. 3.5 billion years ago
20. It is generally agreed that the early earth's reducing atmosphere contained
A. carbon dioxide, methane, nitrogen
B. hydrogen sulfide, water, ammonia
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