In Figure 3.1, line "c." points to the microscope's
a. Illuminator.
b. Condenser.
c. Ocular lens.
d. Objective lens.
Ans: b. Condenser.
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All the following photosynthetic pigments are found in brown algae except:
a. chlorophyll a. b. carotenoids. c. fucoxanthin. d. phycocyanin. e. chlorophyll c.
Cells must constantly bring in certain molecules and ions while keeping others out. What part of the cell accomplishes this function?
a. the vesicles b. the plasma membrane c. the nucleus d. the lysosomes
Fall leaf color on deciduous trees is a result of
A. cessation of chlorophyll production, which allows the accessory pigments to be revealed. B. the reduction in the production of accessory pigments. C. the production of more accessory pigments because of the cooler temperatures. D. the increased angle of the sun during the fall, which reflects more of the accessory pigments.
Describe how the FTO gene is an example of epigenetics (the ability of environment to influence how a gene is expressed)
What will be an ideal response?