Nicotine synthesis is an adaptation of plant chemical defense against insects
____________________ Indicate whether the statement is true or false.
T
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Chemolithotrophs near hydrothermal vents support a variety of life forms. Why is this analogous to photosynthetic microbes supporting life forms closer to the surface of the planet?
A. Because all life forms need some energy source, electron source, and carbon source. Chemolithotrophs fix inorganic carbon and, if consumed by other microbes, could serve as sources for all three requirements for life. This is very similar to the role that photosynthetic microbes play in the top levels of the oceans/lakes. B. Because chemolithotrophs will also utilize energy from sunlight to form their sugars/get their chemical energy...much like photosynthetic microbes. C. Because chemolithotrophs also pull in carbon dioxide as their carbon source, just like photosynthetic microbes. D. Because photosynthetic microbes utilize heat energy from the sun as an energy source. Chemolithotrophs utilize heat energy from hydrothermal vents, but it's still heat energy. This makes both microbes similar.
When you describe a person as having attached ear lobes, you are describing his or her genotype.
Answer the following statement true (T) or false (F)
An amoeba, a protozoan that moves by pseudopodia, approaches a smaller protozoan and extends its pseudopodia (extensions of cytoplasm in plasma membrane) around the smaller protozoan. Once the amoeba's pseudopodia completely surrounds the other protozoan, the amoeba's plasma membrane pinches off by folding back into the amoeba and creating a vesicle containing the smaller protozoan. This vesicle is now within the amoeba itself and will soon fuse with other vesicles containing digestive enzymes. This is an example of
a. pinocytosis. b. exocytosis. c. osmosis. d. phagocytosis.
Four of the following features are important evolutionary advancements in the evolution of the tree-dwelling primates. Which one is the exception?
A. Grasping hands and feet B. Depth perception C. Well-developed sense of smell D. The ability to see in 3D E. A large brain relative to body size