Biol 1201 Exam 1 (gregg) questions with answers

Biol 1201 Exam 1 (gregg) questions with
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answers

plasma membrane - CORRECT ANSWERS ✔✔The membrane at
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the boundary of every cell that acts as a selective barrier,
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thereby regulating the cell's chemical composition.
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Ribosomes - CORRECT ANSWERS ✔✔complexes that make
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proteins; free in cytosol or bound to rough ER or nuclear
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envelope


Golgi apparatus - CORRECT ANSWERS ✔✔active in synthesis,
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modification, sorting, and secretion of cell products |\ |\ |\ |\ |\ |\




Lysosome - CORRECT ANSWERS ✔✔digestive organelle where
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macromolecules are hydrolyzed, and autophagy |\ |\ |\ |\




Mitachondrion - CORRECT ANSWERS ✔✔organelle where cellular |\ |\ |\ |\ |\ |\ |\


respiration occurs and most ATP is generated
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Cytoskeleton - CORRECT ANSWERS ✔✔reinforces cell's shape; |\ |\ |\ |\ |\ |\ |\


functions in cell movement; components are made of protein.
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Includes: Microfilaments, Intermediate filaments, Microtubules.
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Endoplasmic Reticulum - CORRECT ANSWERS ✔✔network of |\ |\ |\ |\ |\ |\ |\


membranous sacs and tubes; active in membrane synthesis and |\ |\ |\ |\ |\ |\ |\ |\ |\

,other synthetic and metabolic processes; has rough (ribosome-
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studded) and smooth regions |\ |\ |\




Rough ER - CORRECT ANSWERS ✔✔protein synthesis
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Smooth ER - CORRECT ANSWERS ✔✔lipid synthesis
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calcium ion storage |\ |\




poison detoxification
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Nucleolus - CORRECT ANSWERS ✔✔nonmembranous structure
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involved in production of ribosomes; a nucleus has one or more
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nucleoli


Chromatin - CORRECT ANSWERS ✔✔material consisting of DNA
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and proteins; visible in a dividing cell as individual condensed
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chromosomes


cell wall - CORRECT ANSWERS ✔✔outer layer that maintains cell's
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shape and protects cell from mechanical damage; made of
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cellulose, other polysaccharides, and protein
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Chloroplast - CORRECT ANSWERS ✔✔photosynthetic organelle;
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converts energy of sunlight to chemical energy stored in sugar
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molecules


central vacuole - CORRECT ANSWERS ✔✔prominent organelle in
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older plant cells; storage, breakdown of waste products,
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, hydrolysis of macromolecules; enlargement of vacuole major
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mechanism of plant growth. |\ |\ |\




Part complete
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The innermost electron shell of an atom can hold up to _____
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electrons. - CORRECT ANSWERS ✔✔2 |\ |\ |\ |\




Which of these relationships is true of an uncharged atom? -
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CORRECT ANSWERS ✔✔The number of protons is equal to the
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number of electrons |\ |\




What determines the types of chemical reactions that an atom
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participates in? - CORRECT ANSWERS ✔✔the number of electrons |\ |\ |\ |\ |\ |\ |\ |\


in the outermost electron shell
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What type of bond is joining the two hydrogen atoms? - CORRECT
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ANSWERS ✔✔covalent
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A(n) _____ refers to two or more atoms held together by covalent
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bonds. - CORRECT ANSWERS ✔✔molecule
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This atom can form up to _____ single covalent bond(s) -
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CORRECT ANSWERS ✔✔4 |\ |\




A(n) _____ bond joins these two oxygen atoms. - CORRECT
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ANSWERS ✔✔double covalent |\ |\