Ribosomes are composed of

a. proteins only.
b. proteins and DNA.
c. proteins and RNA.
d. glycolipids and DNA.
e. glycolipids and RNA.


C

Biology & Microbiology

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When an animal is apparently aware of its circumstances and uses reasoning to achieve a goal it is said

to have _____.

a. operant conditioning b. habituation c. cognition d. raven awareness e. learning

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Sickle-cell anemia has been traced to what type

of mutation?

a. frameshift b. base-pair substitution c. mutagenic d. transposable element e. viral

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A torn tendon sidelines athletes for long periods of time because the tissues possess less vascular tissue than bone

Indicate whether the statement is true or false

Biology & Microbiology

What is a good estimate of the background rate of species extinction?

A) one species per day B) one species per year C) one species per millennium D) one species per million years

Biology & Microbiology