Which of the following describes the function of the ribosome in a living cell?
a) production of ATP molecules from energy in nutrient molecules
b) Disposal and recycling of damaged or unneeded cell parts
c) Use of genetic information to build specific protein molecules
d) regulation of molecules entering and leaving the cell
Answer: c) Use of genetic information to build specific protein molecules
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Which of the following cell organelles is
responsible for the breakdown of fatty acids? a. Golgi bodies b. ribosomes c. mitochondria d. lysosomes e. peroxisomes
The important feature of all cells that react to a
specific hormone is the a. type of blood supply they receive. b. proximity of the endocrine gland. c. presence of an appropriate receptor molecule. d. characteristic of their mitochondrial membrane. e. presence of specific genes responsive to the hormone.
Imported fire ants attack
a. humans. b. livestock. c. pets. d. wildlife. e. all of these.
Some researchers argue that short telomeres actually facilitate a longer life span in mammals. The reasoning for this argument includes the idea that ________
A) the activity of telomerase expression?the enzyme that can restore lost bits of telomeres?is repressed B) a reduction in the telomere size for every DNA replication event can serve as an accurate counting mechanism for the number of times a cell has divided C) reducing the number of divisions a cell will go through will also reduce the likelihood of mutation events occurring in the cell's DNA D) All of the above are included in this idea.