Identify the TRUE statement
A. Viruses: used to deliver genes into a cell
B. All of these
C. Plasmids: used in genetics exchange between bacteria
D. Viruses: used in genetics exchange between bacteria
E. Plasmids: used to deliver genes into a cell
Ans: B. All of these
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The seed coat of a pine seed
(a) is derived from the integuments. (b) is produced by the micropyle. (c) surrounds the male gametophyte. (d) is divided into the hypocotyl-root axis and epicotyl.
The only possible photosynthetic cells or structures in a leaf's epidermis are:
a. cuticle b. guard cells c. stomata d. hairs e. scales
Hydrogen ions (H+) are _____
a. indicated by a pH scale c. in blood b. unbound protons d. all of these
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Figure 36.3
Use the figure above to answer the following question.
A fish circulatory system is indicated by the letter (s) ____.
A. A only B. B only C. C only D. both A and B E. both B and C