Amoeba and phytoplankton differ in that phytoplankton can:
A) eat krill. B) live on land.
C) perform photosynthesis. D) move with pseudopodia.
Answer: C
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What is a component of a single nucleotide?
A. A phosphate group B. A six carbon sugar C. All five nitrogenous bases
Answer the following statements true (T) or false (F)
1.Mycologists classify fungi into five phyla based on their sexual structures. 2.Ascomycetes are fungi that cause disease and are not beneficial to humans in any way. 3.A dikaryotic stage is common in the life cycle of many plants, protozoans, and fungi. 4.Salt and sugar in high enough concentrations retard mold growth by limiting the ability of these organisms to take up water by osmosis. 5.Some animals are autotrophs.
An inhibitor of which of the following could be used to block the release of calcium from the endoplasmic reticulum?
A) serine/threonine kinases B) phosphodiesterase C) phospholipase C D) adenylyl cyclase
The "electrochemical gradient" that determines how a charged ion will move through a permeable membrane depends on
A. the electrical forces acting on that ion. B. the difference in concentration of that ion on either side of the membrane. C. the ratio between the charge on the ion and its atomic mass. D. the combined effects of electrical forces and concentration differences across the membrane. E. All of the choices for this question are correct.