Bio 1500 - Exam 2 (Mizzou-Bush) Questions
With Correct Answers.
The process by which light energy is used to make food molecules from CO2 and water -
answer✔✔photosynthesis
where does photosynthesis take place? - answer✔✔in chloroplasts
where does photosynthesis take place? - answer✔✔in chloroplasts
molecules that absorb light of a particular wavelength or color - answer✔✔pigment
which wavelengths do chlorophyll absorb? - answer✔✔violet, blue and red wavelengths
when a substance absorbs light energy and re-emits it at a different wavelength -
answer✔✔florescence
when light energy bounces of an object and is not absorbed - answer✔✔reflection
when chemical reactions generate light energy - answer✔✔bioluminescence
what happens when a proton is absorbed by a molecule? - answer✔✔-it excites an electron into a
higher energy state
-the electron quickly drops to its ground state
-releases the energy as light at a longer wavelength
why does isolated chlorophyll in a tube fluoresce red light, but a leaf doesn't? - answer✔✔in the
leaf, the chlorophyll is coupled to a series of chemical reactions that use the light energy. in the
tube, it emits red light due to a mixture with acetone
-recalling facts and basic concepts
-define, duplicate, list, memorize, repeat, state - answer✔✔remember
-explain ideas or concepts
what are the four classes of organic molecules? - answer✔✔-carbohydrates
-lipids
-proteins
-nucleic acids
-composed of C, H, & O atoms
-source of energy, recognition molecule & part of RNA and DNA - answer✔✔carbohydrates
-made of fats, oils, and waxes
-major component to cell membranes, long-term storage and signaling - answer✔✔lipids
-made of nucleotides
-composed of genetic material inherited in humans
-DNA = master code for protein assembly
-RNA = manufacturing of proteins - answer✔✔nucleic acid
-play role in regulating molecules involved in catalysis; cellular signaling - answer✔✔proteins
produces ATP - answer✔✔mitochondria
work to convert light energy to sugar that can be used in the cells of plants -
answer✔✔chloroplasts
produces protein - answer✔✔ribosomes
processes macromolecules like proteins - answer✔✔Golgi apparatus
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