Describe two roles that sunlight plays in the marine environment
What will be an ideal response?
Sunlight is the primary source of energy that is captured by photosynthetic organisms. These organisms, in turn, become food for other organisms. Solar energy is also important due to the warming effect it has on the planet. Light from the sun is used by animals in the marine environment for visually detecting their surroundings and as a cue for determining which way is up. If very intense, the visible and ultraviolet components of sunlight can cause severe damage to both photosynthetic and non-photosynthetic organisms in the marine environment.
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Scientists have studied atmospheric conditions over the last century and have noted that the
atmospheric carbon dioxide level has __________ and global temperatures have __________.
a. decreased; decreased b. decreased; increased c. increased; decreased d. increased; increased
You decide to alter the rate of a reaction. Which of the following is not going to help you increase the rate of this reaction?
a. adding more reactants b. adding more enzyme c. adding heat d. mechanically stirring the contents of a beaker of reactants e. adding more product
Large molecules that are formed by combining smaller molecules and are biologically significant are referred to as what?
a. DNA b. macromolecules c. monomers d. polymers
Which molecules are broken down by trypsin, elastase, and chymotrypsin?
a. lipids b. proteins c. peptides d. amino acids