Describe how continental drift resulting in Australia being isolated in the South Pacific contributed to biological
species evolution. What will be an ideal response?
Concepts to Consider: The breakup of Pangaea as a result of continental drift led to drifting
apart major portions of once connected land masses. In Pangaea, areas of geological activity
such as volcanism and land features like rivers, lakes, and mountains would have potentially
kept populations isolated and species would have evolved accordingly. The initial pattern of
plant and animal distribution would be different and dependent upon their location with
respect to the original land mass. However, over the course of time these isolated populations
would be exposed to new environmental conditions leading to adaptive radiation and
biological speciation.
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Which of the following is a correct statement?
a. Rhodopsin is active in the dark and thereby allows the release of neurotransmitters from the synaptic terminal in the absence of light. b. Rhodopsin is inactive in the dark and thereby inhibits the release of neurotransmitters from the synaptic terminal unless light is present. c. Rhodopsin is active in the dark and thereby inhibits the release of neurotransmitters from the synaptic terminal in the absence of light. d. Rhodopsin is inactive in the dark and thereby allows the release of neurotransmitters from the synaptic terminal unless light is present. e. Rhodopsin's activity is different between rods and cones, but leads always to increasing amounts of neurotransmitters being release.
Some sharks and tunas possess a ________, a blood circulation system that allows them to keep internal temperatures higher than external temperatures
Fill in the blank(s) with correct word
The reptiles, which include lizards, snakes, alligators, crocodiles, turtles, and birds, evolved from the _____.
A) reptiles. B) amphibians. C) vertebrates. D) both A and C E) both B and C
Each element on the periodic table is defined by __________________, which is also known as the atomic number.
A. the number of protons B. the number of neutrons C. the number of electrons D. the total number of protons and neutrons E. the mass number