RNA differs from DNA in that:
a. RNA pairs cytosine with uracil.
b. RNA pairs thymine with uracil.
c. RNA is double-stranded and DNA is single-stranded.
d. RNA is single-stranded and DNA is double-stranded.
d
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The SARS virus is a member of the family of viruses called ____________.
Fill in the blank(s) with the appropriate word(s).
A marine biologist compares 2 samples of reef-building coral colonies collected from various locations on a coral reef. One colony has thick, stout branches while the other has long, thin branches. Are these different species? Discuss why or why not. How could the biologist solve this question?
What will be an ideal response?
Select all structures that are part of the peripheral nervous system.
A. spinal nerves B. cranial nerves C. spinal cord D. brain
Septa divide the actinomycete mycelia into long cells each containing several nucleoids.
Answer the following statement true (T) or false (F)