Briefly state what is meant by repetitive DNA
What will be an ideal response?
DNA is present in repeated sequences—(GACAT)n, for example.
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Which of the following is not a characteristic exclusively found in animals?
A. multicellularity B. chitin C. collagen D. gastrula
Conifers have male and female cones. What are the male cones called?
a. ovulate b. megasporocyte c. staminate d. monoecious
The proportion of the total air pressure that is exerted by an individual gas in a gas mixture is referred to as the
A. partial pressure of that gas. B. gas-specific gravity of that gas. C. total pressure of that gas. D. incomplete pressure of that gas. E. barometry of that gas.
Which statement is NOT true about water uptake in a plant root?
A. Water enters the root from the soil by osmosis. B. Water enters the cytoplasm of the root hairs by active transport. C. Water must enter the cytoplasm of the endodermal cells to get past the Casparian strip. D. Water travels by diffusion through the cell walls of the epidermis and cortex.