Eucarya
A. consist of only multicellular organisms.
B.
have a more complex internal structure than archaea or bacteria.
C.
have a simpler internal structure than archaea or bacteria.
D. have a membrane around the DNA.
E.
have a more complex internal structure than archaea or bacteria AND have a membrane around the DNA.
E
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Evolution _____________. (Mark true (t) or false (f) for each statement.)
____ is a change in allele or genotype frequency over time ____ always results in a visible change in the physical characteristics of an organism ____ is a process that takes many, many generations ____ is only seen in unicellular organisms ____ is a natural phenomenon that is outside the influence of humans ____ can only occur in the natural environment ____ is not seen in domesticated animals ____ always results in an increase in an organism's fitness ____ is inherently random in nature ____ acts on animals but not plants What will be an ideal response?
Which of the following tissue types is used as the body's reserve of energy?
a. Loose connective b. Blood c. Cartilage d. Dense irregular e. Adipose
In Drosophila, mutation screening usually involves use of a balancer chromosome that includes three elements: a set of overlapping inversions, an easily recognized dominant mutation, and a recessive lethal mutation that prevents balancer homozygotes
from surviving. Which one, or combination, of these elements is necessary and sufficient to suppress crossovers? A) inversions B) dominants C) lethal recessive D) inversions plus dominant E) lethal plus inversions
Describe experiments using marker molecules that have been done to elucidate important properties of (1) tight junctions and (2) gap junctions,
and propose one additional experiment you could do with each junction to gain a greater understanding of that junction's properties. What will be an ideal response?