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BIOLOGY 1301 CH1-4 QUESTIONS AND VERIFIED ANSWERS

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BIOLOGY 1301 CH1-4 QUESTIONS AND VERIFIED ANSWERS

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Use beams of electrons
and electromagnets


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Electron Microscopes




________________ is a metabolic nucleotide which act as the energy source for cellular work.

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ATP(adenosine triphosphate)




Chemical reactions that form organic compounds from smaller molecules are called
_________________________ reactions because they involve water loss.


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dehydration




The single condition changed in an experiment is the ______________________________ variable.


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independent or experimental




A single polypeptide can be twisted and folded into a globular shape due to
interactions between R groups. This describes ____________________________structure.


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primary




Because water expands when it freezes, water is less ______________________ as a solid than it
is as a liquid.

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dense




A cell manufacturing large amounts of protein that is to be secreted would have a
large network of endoplasmic reticulum covered with many _____________________________.


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ribosomes




_____________________________ are the structural lipids which make up all cell membranes.


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phospholipids




A paramecium, a fox, a mushroom, and a passion flower would all be classified in the
domain ________________________________.


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eukarya




Plant cells have an outer cell ________________, green plastids called ________________________, and
large central ________________________which are not found in animal cells.

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cell wall...chloroplasts...vacuole




_________________________ and _______________________ are structural proteins which make up the skin,
hair, and nails.


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collagen...keratin




Many proteins such _________________________ in red blood cells and channel proteins in cell
membranes play a role in the transport of oxygen in the blood and other molecules in
and out of cells.


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hemoglobin




Most large organic molecules are _________________________consisting of many identical or
similar subunits called _____________________ which are covalently bonded together.


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polymer...monomer

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