Which of the following sets of organs are involved in producing enzymes that are involved in breaking down proteins to amino acids?
A. Salivary glands, stomach, pancreas, liver
B. Liver, stomach, pancreas, intestinal lining
C. Pancreas, intestinal lining, salivary glands, stomach
D. Stomach, pancreas, intestinal lining
D. Stomach, pancreas, intestinal lining
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Answer the following statements true (T) or false (F)
1. All tissues are composed of cells. 2. The capacity to maintain a fairly constant body temperature is a homeostatic process. 3. A community is composed of different populations of animals and plants. 4. A defining characteristic that distinguishes prokaryotic and eukaryotic organisms is the lack of cell structure in one versus the other. 5. The modification of a limb that was used for walking in a pre-existing ancestor to one that is used as a wing for a species today is called proteomics.
You are working on a team to characterize a local lake's plankton community. Using a compound microscope, you isolate one specimen from a water sample. It is unicellular and has a specialized feeding groove cut into the cell surface. What cannot be true of this species?
A. It is heterotrophic. B. Glycolysis takes place in a peroxisome. C. Its locomotion is facilitated by one or more flagella. D. It is an osmotroph. E. Its locomotion is facilitated by interlocking protein strips.
How would a mutation allowing a heterocyte to synthesize more chlorophyll affect the process of nitrogen fixation?
A. There will be a decrease in the amount of ammonia converted to nitrogen gas. B. There will be no effect because photosynthesis and nitrogen fixation are not directly related. C. There will be an increase in the amount of nitrogen gas converted to ammonia. D. There will be an increase in the amount of ammonia converted to nitrogen gas. E. There will be a decrease in the amount of nitrogen gas converted to ammonia.
Organs are groups of specialized cells that are similar in structure and perform common functions.
a. true b. false