An organism in an ecosystem that feeds off others is a(n) ____
a. heterotroph
b. producer
c. autotroph
d. photosynthetic organism
e. plant
ANSWER: a
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How does primary protein structure affect the function of protein enzymes?
A) Substrates interact with R-groups at the enzyme's active site. B) Substrates interact with R-groups at the enzyme's external surface. C) Substrates interact with hydrophobic R-groups at any region of the enzyme. D) Substrates permanently bind to R-groups at the enzyme's active site.
Microorganisms do not generally reproduce sexually; therefore, species are usually defined by phenotypic and genotypic similarities.
Answer the following statement true (T) or false (F)
The majority of prokaryotic DNA is arrayed in:
A. multiple circular chromosomes. B. a single circular chromosome. C. a single linear chromosome. D. multiple linear chromosomes.
Destruction of the motor areas in the left cerebral
cortex results in the loss of a. sensation on the right side of the body. b. sensation on the left side of the body. c. voluntary movement on the left side of the body. d. voluntary movement on the right side of the body. e. involuntary control of the autonomic system.