Lamarck proposed the principle of use and disuse
1.True
2.False
1
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Photosynthesis ceases when leaves wilt, mainly because _____
A) the chlorophyll in wilting leaves is degraded B) flaccid mesophyll cells are incapable of photosynthesis C) stomata close, preventing carbon dioxide from entering the leaf D) photolysis, the water-splitting step of photosynthesis, cannot occur when there is a water deficiency E) accumulation of carbon dioxide in the leaf inhibits enzymes
The distinctive feature of chloroplasts is that they contain a green pigment called:
A. Gram stain. B. chlorophyll. C. hemoglobin. D. chromatin. E. keratin.
Given the DNA sequence 5?-TAC AAA ATA CAG CGG-3?, which of these sequences represents a missense mutation?
A) 5?-TAG AAA ATA CAG CGG-3? B) 5?-TAC AAA TAC AGC GGG-3? C) 5?-TAC AAG ATA CAG CGG-3? D) 5?-TAC AAA ATA CAC CGG-3? E) 5?-TAC AAA ATA CAG AGG-3?
Photosynthetic prokaryotes that use light energy to build organic compounds from carbon dioxide and water display which of the following modes of nutrition?
a. chemoheterotrophic b. chemoautotrophic c. photoheterotrophic d. photoautotrophic