What does shear stress influence for bottom dwellers?
a. The amount of substrate in an area
b. The food availability in an area.
c. The type of sediment in an area.
d. The speed of water currents.
b
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Answer the following statements true (T) or false (F)
1. During gastrulation, muscle cells and connective tissues are formed from the endoderm. 2. Sand dollars, a kind of marine echinoderm, release their gametes into the surrounding water to be fertilized through spawning, producing large numbers of offspring. They do not care for their young, many of which are eaten by predators. Therefore, this organism exhibits a type III survivorship curve. 3. A graph of a typical exponential growth curve will be J-shaped, as exhibited in the early growth pattern of bacteria. 4. The chance of survival of an individual sparrow during an unusually hot summer is independent of that species’ population density. 5. Economic development in a country can change its population’s age structure to a conical shape.
If the first electron transfer chain in the lightdependent
reactions of photosynthesis was stopped, which of the following would NOT be generated?
a. oxygen gas b. NADPH c. ATP d. ATP and NADPH e. none of these would be generated
Vitamin D and ___________________ are two signaling molecules that use pathways similar to steroids to interact
with target cells. Fill in the blank(s) with the appropriate word(s).
Some protozoa have cell structures that are formed as temporary extensions of the cell membrane, allowing the cell to detect and respond to their environment, and to catch and engulf food. These extensions are called
What will be an ideal response?