The molluscan class Cephalopoda includes all of the following kinds of animals EXCEPT:

a. octopi.
b. nautiluses.
c. cuttlefish.
d. snails.
e. squid.


Ans: d. snails.

Biology & Microbiology

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When an electron in a pigment molecule is absorbed by a photon, it ____

a. is always shared with another atom via a double bond b. is always shared with another atom via a single bond c. emits its extra energy and returns to its original energy level d. moves to a higher energy level and remains there e. moves to a lower energy level and remains there

Biology & Microbiology

If the heterozygous phenotype is intermediate between those of the two different homozygotes, this is called

a. epistasis. b. independent assortment. c. codominance. d. incomplete dominance. e. polygenic.

Biology & Microbiology

Megakaryocytes fragment to produce

a. red blood cells. b. lymphocytes. c. platelets. d. eosinophils. e. neutrophils.

Biology & Microbiology

The chemical group in box 5 of the accompanying figure is a:


a. hydrogen bond.
b. phosphate.
c. nucleotide.
d. pyrimidine.
e. protein

Biology & Microbiology