Glass has a greater refractive index than air. This means that ________.
A. the light is bent away from the normal when passing through glass from air
B. the velocity of the light accelerates when it passes through the glass from the air
C. the velocity of the light is slowed when it passes through the air from the glass
D. the velocity of the light is slowed when it passes through the glass from the air
Answer: D
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Four of the five choices listed below are possible
causes of extinction. Select the exception. a. asteroid impact b. conservation c. tectonic change d. human activity e. climate change
In a situation with codominant inheritance _____
A. there is no recessive phenotype B. each allele is fully and completely expressed C. the principles of Mendelian inheritance are intact D. independent assortment can predict the genotypes and phenotypes of the offspring E. all of these are true
How and where is ATP made in a eukaryotic cell?
A. ATP is made in all compartments of the cell in response to endergonic reactions and is used to drive exergonic reactions in the cell. B. ATP is only made in the mitochondria in response to chemiosmosis. C. ATP can be made by an enzyme complex that uses the energy of protons moving down their concentration gradient from the mitochondrial matrix to the cytoplasm to make the ATP. D. ATP can be made by direct phosphorylation of ADP in the cytoplasm, and by an enzyme complex that uses the energy from a proton gradient to drive ATP synthesis in the mitochondria. It can also be made in other locations in the cell, depending on the cell type.
A manufacturing company dumps its wastes into a nearby pond. One of the wastes is found to paralyze the contractile vacuoles of certain protists. A biologist looking at individual samples of these organisms taken from the pond would find that they
A) have lost water and shrunk. B) have gained water and burst. C) have died of malnutrition. D) have died because wastes have built up in the cytoplasm.