Imagine that a section of heart muscle no longer has gap junctions. What do you think would be the result?
A. The effects would be minimal from this change.
B. The ability of the heart muscle cells to contract would be severely compromised.
C. The ability of the heart muscle cells to reproduce would be severely compromised.
D. The ability of the heart muscle cells to coordinate their contractions would be severely compromised.
D. The ability of the heart muscle cells to coordinate their contractions would be severely compromised.
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In order to use the energy stored in sugars, cells must first transfer it to ____ that is synthesized during aerobic respiration
a. carbon b. oxygen c. ATP d. NAD+ e. carbon dioxide
Which one of the following is the earliest event in the process of fertilization?
A) Sperm contact the jelly coat around the egg. B) The sperm head plasma membrane fuses with the egg plasma membrane. C) Enzymes from the acrosome are released. D) The sperm nucleus enters the cytoplasm of the egg.
Tertiary structure can be determined using:
A) both X-ray crystallography and nuclear magnetic resonance spectroscopy B) X-ray crystallography C) thin layer chromatography D) nuclear magnetic resonance spectroscopy
Levels of ecological organization
What will be an ideal response?