Which of the following is NOT a major feature
of arthropods?
a. jointed appendages
b. exoskeleton
c. paired segmental nephridia
d. specialized and fused-together segments
e. specialized sensory structures
C
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The largest number of food servings in your daily diet should be from
(a) meats and beans. (b) dairy products. (c) vegetables and fruits. (d) grains.
Imagine that scientists have discovered a new planet apparently devoid of life, but having ice caps located at the poles
These ice caps reveal that the planet's atmospheric O2 levels sharply increased about 1,000,000 years ago, but then quickly dropped 50,000 years ago. What could have accounted for these changes in atmospheric O2 levels? A. Photosynthetic organisms evolved on the planet 100,000 years ago, but went extinct 50,000 years ago. B. Photosynthetic organisms evolved on the planet 50,000 years ago. C. Oxygen-based mammalian life evolved on the planet 100,000 years ago, and photosynthetic organisms evolved 50,000 years ago. D. Oxygen-based mammalian life evolved on the planet 100,000 years ago.
Which of the following statements about the electron transport chain is true?
a. Protons are pumped out of the mitochondria by the complexes of the electron transport chain. b. The proton gradient established during electron transport is a form of potential energy. c. The electron transport chain can be found in the mitochondria of aerobic bacteria and other cells. d. The movement of protons down a concentration gradient is an endergonic process. e. ATP synthesis associated with the electron transport chain is an example of substrate level phosphorylation.
What are the products of linear photophosphorylation?
A) heat and fluorescence B) ATP and P700 C) ATP and NADPH D) ADP and NADP E) P700 and P680