Which structure do prokaryotic cells lack?
a. nucleoid regions
b. membrane-bound nuclei
c. cytoplasm
d. a plasma membrane
e. DNA
b
You might also like to view...
generate cDNA libraries for the same cell line under different conditions. When I compare the
libraries, I find some cDNAs in one library that are missing from the other. What is the best explanation for this result?
a. One of the cDNA libraries is really a genomic library. b. Even the same cell type will change gene expression as conditions change. The difference in cDNAs tells me which genes are expressed in each set of conditions. c. There was an error in generating one of the cDNA libraries and some of the sequences were not cloned properly. d. The probe I used in the Southern blot of the libraries must have been poorly constructed. e. There is no explanation other than experimental error.
The "total amount of money" earned by a business is to "money earned by regular sales" plus the "extra money earned through increased customers when a business voluntarily performs a community service" as:
a) direct fitness is to the sum of indirect fitness and kin selection. b) alarm calls are to the sum of personal alarm calls and community alarm calls. c) total selection is to the sum of kin selection and reciprocal altruism. d) kindness towards individuals is to the sum of kin selection and indirect fitness. e) inclusive fitness is to the sum of direct and indirect fitness.
All vertebrates other than mammals are ectothermic.
Answer the following statement true (T) or false (F)
This part of the rib articulates with the appropriate vertebra.
What will be an ideal response?