In which stage is the viral DNA introduced into the cell?
a. Release
b. Penetration
c. Biosynthesis
d. Assembly
e. Attachment
Answer: b. Penetration
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A seed that lands in the forest soil is homozygous mutant for the LEAFY (LFY) gene, and as a result does not produce any functional LEAFY protein. What do you predict will happen during the development of this seed?
A. It will germinate and grow vegetatively, but will never produce flowers. B. It will fail to germinate. C. It will germinate and immediately produce flowers. D. It will germinate and grow vegetatively. It will only develop flowers if it is from a species regulated by the autonomous flowering pathway. Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about flowering and the LEAFY gene? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which organism is considered part of the nekton?
a. frigate bird b. penguin c. cormorant d. snowy plover e. albatross
Dalton's Law states that:a
the amount of a gas that diffuses across a membrane depends on the differences in the gas' partial pressure. b. the ability of hemoglobin to bind oxygen depends on the partial pressure of oxygen. c. in a mixture of gases, the total pressure of the mixture is the sum of the pressures of the individual gases. d. pH causes a displacement of the oxygen-hemoglobin dissociation curve. e. as the concentration of chloride ions increases, the ability of hemoglobin to bind carbon dioxide decreases.
The pylorus is located at the exit of the:a
stomach. b. esophagus. c. jejunum. d. duodenum. e. rectum.