Which of the following organelles are endosymbionts of eukaryotic cells?
a. Golgi body
b. nucleus
c. lysosome
d. peroxisome
e. mitochondria
Answer: e. mitochondria
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Angiosperms are most closely related to _____.
a) bryophytes b) seedless vascular plants c) green algae d) gymnosperms e) charophyceans
Different species of animals have very different nutritional requirements and gastrointestinal tract (GIT) specializations, depending on their primary diets
For example, carnivorous animals have relatively short small intestines, fast gut passage rates, and high protein requirements, in accordance with the high-protein, easily digested prey they consume. Based on your knowledge of nutrition and digestion and on the example provided in this scenario, what do you conclude about ruminants, which eat low-protein, difficult-to-digest plant leaves? A) Their GITs and nutritional requirements are similar to those of carnivores, and they must also eat some animal prey to obtain enough dietary protein. B) They have reduced protein requirements, long GITs, and slow gut passage rates to extract as many nutrients as possible from their diet. C) They have reduced protein requirements but GITs and gut passage rates similar to those of carnivores. D) They have normal nutritional requirements but extremely short GITs and fast gut passage rates to maximize the amount of food passing through the GIT.
The system of taxonomy used today was originated by (Linnaeus/Darwin/Woese). (Be sure to capitalize your answer.)
What will be an ideal response?
A DNA probe binds to a particular target DNA based upon which principle?
Degeneracy: any segment of DNA can bind to several different probes Complementarity: the DNA probe binds to a sequence complementary to it. Exclusion: the DNA probe binds everywhere except to the area that is identical to it. Semi-conservation: the DNA probe is incorporated into the new cell after duplication, therefore the original probe always remains. None of the above.