Which of the following lack a nucleus and are
structurally simple?
a. eukaryotes
b. prokaryotes
c. fungi
d. algae
e. all of these
B
Biology & Microbiology
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In figure (b), what was the independent variable?
A. the age of the fish
B. the generation
C. the size at which the fish were harvested
D. the species of fish
E. the mean weight of harvested fish
Biology & Microbiology
In __________ food webs, most primary producers are eaten by primary consumers. Fill in the blank(s) with the appropriate word(s)
Biology & Microbiology
Which one of the following is directly involved in the process of blood clotting?
A) sodium ions B) antigen C) fibrin D) clotting factor XX E) globulins
Biology & Microbiology
Xylem tissue may contain each of these cell types, except which?
A. Rays B. Sieve cells C. Fibers D. Vessel members E. Tracheids
Biology & Microbiology