Which of the following plants produce seeds that germinate successfully under water?
A. wheat
B. daffodils
C. apples
D. rice
E. corn
Answer: D
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Darwin incorporated Malthus' idea that _____ into his theory of evolution
a. humans have the capacity to produce more offspring than the environment can support b. populations will always produce more individuals than the environment can support c. humans will only produce the number of individuals that the environment can support d. populations will never produce offspring in stressful environments e. populations under environmental stress will become extinct
You investigated the cytoskeleton and found that all three elements, including the one you suspected, are completely normal. You then decide to look at the motor proteins to see if the cause of the abnormality might lie with one of them. Which one of the following would be your hypothesis?
a. The melanophores in these tadpoles have partially functional or nonfunctional kinesin that would normally transport organelles along microfilaments to the center of the cell. b. The melanophores in these tadpoles have partially functional or nonfunctional dynein that would normally transport organelles along microtubules to the center of the cell. c. The melanophores in these tadpoles have partially functional or nonfunctional dynein that would normally transport organelles along microfilaments to the center of the cell. d. The melanophores in these tadpoles have partially functional or nonfunctional kinesin that would normally transport organelles along microtubules to the center of the cell. e. The melanophores in these tadpoles have partially functional or nonfunctional myosin that would normally transport organelles along microfilaments to the center of the cell.
Please match the description to the pattern of infection.
More severe infection, rapid onset A) Acute infection B) Systemic infection C) Localized infection D) Chronic infection E) Secondary infection
Seeds appeared in the fossil record by
A. a billion years ago. B. 545 million years ago. C. 100 million years ago. D. 365 million years ago. E. 780 million years ago.