Membrane sterols such as cholesterol function in animal cell membranes to ____
a. increase the rate of diffusion
b. store cellular energy
c. facilitate ion transport
d. maintain membrane fluidity
e. receive chemical signals
D
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Stem cells are _____
a. unspecialized b. specialized c. unable to divide d. always pluripotent e. only found in embryos
Which phylum consists of diploblastic animals with radial or biradial symmetry?
a. Cnidaria b. Parazoa c. Platyhelminthes d. Mollusca
________ forests typically grow in the intertidal zone of tropical coasts where wave action is absent, sediments accumulate, and the muds are anoxic
Fill in the blank(s) with correct word
The reason that linked genes are inherited together is that
A) they are located on the same chromosome. B) the number of genes in a cell is greater than the number of chromosomes. C) chromosomes are unbreakable. D) alleles are paired. E) genes align that way during metaphase I.