In active transport, what provides the energy needed to move ins or molecules across the membrane?
a. sodium & potassium ions
b. calcium ions
c. sodium ions alone
d. ATP molecules
Answer: d. ATP molecules
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Sarah and two of her brothers have autism. Their parents do not have autism. Scientists perform exome sequencing of the parents and the children to identify mutant genes in the children. Which approach to identifying genes involved in autism is described here?
A) Multiple unrelated affected subjects B) Trio analysis C) Recessive analysis
Which of the following is not a function of the nuclear division process of mitosis in eukaryotic organisms
1.increase in body size 2.tissue repair in multicelled eukaryotes 3.asexual reproduction 4.sexual reproduction
The movement of plates of the Earth's crust is
a. plate tectonics. b. plate dynamics. c. plate mechanics. d. plate kinetics. e. plate motility.
Many cells use tiny projections of their plasma membrane called ________ to increase the surface area relative to cell volume
Fill in the blank(s) with correct word