Which of the following organisms would you most likely expect to find preserved as a fossil?
a. a jellyfish
b. a shelled arthropod such as a trilobite
c. an earthworm
d. a nematode
e. a protozoan
B
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Where are proteins produced other than on ribosomes free in the cytosol or ribosomes attached to the ER?
A) in the extracellular matrix B) in the Golgi apparatus C) in lysosomes D) in mitochondria E) in the nucleolus
Speculate why the half-life of mRNA is short, while the half-lives of rRNA and tRNA are long
What will be an ideal response?
If one person in 50 is a carrier of an autosomal recessive disorder in a population, the chance that an unrelated man and woman are both carriers is
A) 1/50. B) 1/100. C) 1/1000. D) 1/2500.
To preserve epigenetic memory in the daughter cells, the cell retains these "old" proteins during DNA replication
What will be an ideal response?