During embryonic development, most of the skeleton is first formed of _____
cartilage
collagen fibers
calcium
chondrocytes
A. cartilage
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The evolution of flowers and sweet-tasting fruits in response to animal pollinators are examples of ____ relationships
Fill in the blank with the appropriate word.
The relationship between the light-dependent and light-independent reactions in photosynthesis is that
A. the energy stored in the glucose made during the Calvin cycle is used to drive the light reactions. B. the light-dependent and light-independent reactions both take place within the membranes of bacterial cells or thylakoid membranes of chloroplasts. C. the ATP made during the light-dependent reactions is used for the growth and development of the cell and the ATP from the oxidation of glucose drives the light reactions. D. the light-independent reactions are driven by the ATP and NADPH generated from the light reactions.
Within a single motor neuron, what direction does an impulse follow?
a. dendrite ? axon ? cell body b. axon ? dendrite ? cell body c. dendrite ? cell body ? axon d. cell body ? dendrite ? axon e. cell body ? axon ? dendrite
During the process of splitting water during photosynthesis, the first cyanobacteria released _____ into the
atmosphere. a. oxygen gas b. infrared heat c. hydrogen gas d. carbon dioxide e. photons of light