Straighterline Biology 101 final exam with correct answers

Straighterline Biology 101 final exam with |\ |\ |\ |\ |\ |\




correct answers |\




Chemical Composition of the Cells: Atoms - CORRECT ANSWERS
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✔✔Each atom has a positively charged nucleus which is
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surrounded by a cloud of negatively charged electrons.
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The nucleus consists of protons (+) and neutrons (-).
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The number of protons in the nucleus gives the atomic number.
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Chemical Composition of the Cells - CORRECT ANSWERS ✔✔-Ionic
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bonds form by the loss and gain of electrons
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-Covalent bonds form by the sharing of electrons
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-A cell is formed from carbon compounds
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Chemical Composition of the Cells: Four Major Families of organic
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molecules - CORRECT ANSWERS ✔✔Fatty Acids- are components
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of cell membranes
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Amino acids- subunits of proteins
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Sugars- provide an energy source for cells
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Nucleotides- subunits of DNA and RNA |\ |\ |\ |\ |\




Metabolism - CORRECT ANSWERS ✔✔All of the chemical reactions
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that occur within an organism
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, Photosynthesis - CORRECT ANSWERS ✔✔-Conversion of light |\ |\ |\ |\ |\ |\ |\


energy from the sun into chemical energy.
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-synthesize food from carbon dioxide and water |\ |\ |\ |\ |\ |\




-involves the green pigment chlorophyll and generates oxygen as
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a byproduct.
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Cellular Respiration - CORRECT ANSWERS ✔✔a set of metabolic
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reactions and processes that take place in the cells of organisms
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to convert chemical energy from nutrients into adenosine
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triphosphate (ATP), and then release waste products. |\ |\ |\ |\ |\ |\




Cell Structure and Function: Prokaryote (bacteria and archaea) -
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CORRECT ANSWERS ✔✔Pilus- hair-like appendage found on the
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surface
Capsule- made of polysaccharides, helps the prokaryotes cling to
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each other and to surfaces
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Cell wall- rigid layer of polysaccharides lying outside the plasma
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membrane |\




Plasma membrane- layer of lipids that separates the cell interior
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from the outside environment
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Neucleoid (DNA)- contains all or most of the genetic material
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cytoplasm- everything found within the plasma membrane
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ribosomes- to manufacture proteins |\ |\ |\




flagellum- used for cell movement |\ |\ |\ |\ |\




(no membrane bound nucleus)
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