Morphology refers to the ____ of an organism
a. reproductive ability
b. appearance
c. differentiation
d. lifespan
e. movement
B
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The septum in a fungus is:
A. the seventh cellular division B. the seventh nucleus in a dikaryote cell C. the seventh cell from the tip of the hypha D. the demarcation between the mycelium and the fruiting body E. cross walls separating the hyphae into cells
One reason that diseases caused by dominant alleles remain in populations is that
A) they do not run in families. B) they often do not produce symptoms until a person has already had children. C) they affect more females than males. D) they are more curable than recessive diseases.
During transcription
a. double-stranded RNA chains are produced. b. the entire DNA molecule is used. c. primase creates an RNA primer to start the RNA strand. d. only one of the two DNA strands acts as a template. e. protein is made from RNA.
Which of the following is a correct statement about sugar movement in phloem?
A) Diffusion can account for the observed rates of transport. B) Movement can occur both upward and downward in the plant. C) Sugar is translocated from sinks to sources. D) Only phloem cells with nuclei can perform sugar movement.