Water molecules are polar with ends that exhibit partial positive and negative charges. These opposite charges allow water molecules to attract each other through:
A. ionic bonds.
B. covalent bonds.
C. hydrogen bonds.
D. peptide bonds.
C. hydrogen bonds.
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Which of the following statements about cellular metabolism is FALSE?
A) Glycolysis is inhibited when cellular energy levels are abundant. B) Citric acid cycle activity is dependent solely on availability of substrate; otherwise it is unregulated. C) In the electron transport chain, electrons decrease in energy level as they are transferred from one electron carrier to the next. D) Reactions of the citric acid cycle take place in the mitochondrial matrix.
African sleeping sickness is caused by Trypanosoma brucei, a unicellular flagellated protist that infects red blood cells after being injected into the bloodstream. Trypanosoma brucei is which of the following?
A. a diatom B. an alga C. a protozoan D. a slime mold E. an apicomplexan
A quadrat is usually used to measure density in mobile populations of animals
Indicate whether the statement is true or false
If you wanted to decrease sperm production, which of the following hormones would be most effective?
A) FSH B) inhibin C) TSH D) GnRH