Describe at least two cellular-level differences between a photosynthetic prokaryote and a plant
What will be an ideal response?
The prokaryote does not have any membrane-bound organelles (including a nucleus), but the plant (being a eukaryote) does. The prokaryote is unicellular, whereas the plant is multicellular.
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A function of antibodies is to _____
A) inject toxins into living pathogens B) secrete cytokines that attract macrophages to infection sites C) release perforins to disrupt infected cells D) act as Toll-like receptors E) mark pathogenic cells for destruction
Fossil fuels are the result of buried organisms where low oxygen levels existed
Indicate whether the statement is true or false.
Which of the following statements is
CORRECT about C4 plants?
a. In C4 plants, fixation of carbon dioxide and the light-independent reactions occur in two different types of cells. b. C4 plants are so called because a 4-carbon molecule is the first stable intermediate that forms in the light-independent reactions. c. In C4 plants, carbon dioxide is fixed by an enzyme that does not use oxygen even at high oxygen levels. d. C4 plants are adapted to produce glucose even when stomata are closed. e. C4 plants do not use rubisco or the Calvin- Benson cycle.
Natural selection for a certain phenotype will affect the
A. genotype of a population. B. allele frequency of a population. C. allele frequency of an individual. D. genotype of an individual.