Sperm find their way to the archegonium
a. by swimming.
b. due to a chemical gradient diffusing from the archegonium.
c. as a result of sucrose being released during the breakdown of the neck canal cells of the archegonium.
d. by all of the above.
b
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The underlying problem in Gaucher disease is ____
a. the spontaneous breakdown of red blood cells b. the accumulation of fat in white blood cells c. the breakdown of the myelin sheath around nerves d. a hypertrophied spleen e. the lack of critical liver enzymes
After transcription and before translation, eukaryotic mRNA is modified by adding
A) tRNAs and amino acids. B) amino acids and a poly-A tail. C) a cap of modified nucleotides and a poly-A tail. D) an AUG at one end and a poly-U tail at the other.
A developer putting tract housing in a previously pristine area plans numerous small open space areas
where the original habitat is to remain. As a conservationist, how would you suggest changing the plan, if at all? (Canceling the development is not an option.)
What will be an ideal response?With __________ growth, a small population starts
growing slowly, then grows rapidly, and then levels off once __________ is reached. Fill in the blank(s) with the appropriate word(s).