The role of the antenna complex in a photosystem is to
A. capture photons from sunlight.
B. transfer excited electrons to the primary electron acceptor.
C. generate glucose.
D. generate NADPH.
Answer: A
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Which of the following is not a typical characteristic of K-selected plant species?
A. small size B. slow growth C. long life span D. few large seeds E. poor seed dispersal
If you observe an animal ingesting large amounts of food at short intervals and material entering and leaving from the same place, also frequently, you could say it is probably an
A. endotherm with an incomplete digestive tract. B. ectotherm with an incomplete digestive tract. C. endotherm with a complete digestive tract. D. ectotherm with a complete digestive tract. E. None of the answer choices is correct.
Which of the following characteristics applies to humans?
A. protostomes B. deuterostomes C. acoelomate D. determinate growth
Scientific knowledge may change when it is reexamined. For example, scientists in the 1930s proposed changing the way in which organisms were classified. They expanded the number of kingdoms from three to four. The scientists placed the bacteria, which had previously been classified with other single-celled organisms, into this fourth kingdom. What was the main reason for this change in the classification system?
A) Unlike the other single-celled organisms, bacteria lack DNA. B) Unlike the other single-celled organisms, bacteria lack organelles. C) Unlike the other single-celled organisms, bacteria reproduce only sexually. D) Unlike the other single-celled organisms, bacteria are eukaryotes.