Ricin is a(n)
a. substance found in castor bean seeds.
b. polysaccharide extracted from rice.
c. ingredient in many paints and cosmetics.
d. protein that inactivates ribosomes.
e. substance found in castor bean seeds and a protein that inactivates ribosomes.
ANSWER: e
You might also like to view...
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?
A gene that produces a protein used in more than one biochemical pathway, or other trait, is a(n) gene.
A. dominant B. recessive C. pleiotropic D. codominant E. incomplete dominant
Global warming would result from an increase in which of the following components of the
accompanying figure?
a. 1 and 2
b. 2
c. 2 and 3
d. 3
e. 4
Together, inhalation and exhalation are referred to as ________
A) diffusion B) breathing C) active transport D) negative pressure