The frog is able to respire through its moist skin.
Answer the following statement true (T) or false (F)
True
True. The frog is able to respire through its moist skin.
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According to the textbook, prokaryotes absorb their nutrients from the environment; however, prokaryotes also have cell walls. What can you conclude from these statements?
A. Cell walls are permeable, allowing nutrients to pass through. B. Prokaryotes live in a hypertonic environment. C. Osmosis drives the movement of nutrients through the cell wall. D. Prokaryotic cell walls contain transport proteins.
Plant photosynthesis and the consumption of plants by animals are both examples of what unifying principle of life?
A. All living organisms use energy. B. All living organisms maintain organization. C. All living organisms have evolved over the course of many generations. D. All living organisms maintain some level of homeostasis. E. All living organisms are composed of similar structures.
Provide at least two types of evidence that support the hypothesis of endosymbiosis. What will be an ideal response?
Which of the following statements about collagen is false?
a. It is the most abundant protein in animal tissues. b. It forms a double helix, with two collagen molecules wrapped around each other in a ropelike structure. c. It contains an amino acid called hydroxyproline. d. It is a secreted protein.