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(CWI BIO 227 ANDY JENSEN) TEST 1_ ORIENTATION, CHEMISTRY, AND CELLS QUESTIONS AND VERIFIED ANSWERS

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(CWI BIO 227 ANDY JENSEN) TEST 1_ ORIENTATION, CHEMISTRY, AND CELLS QUESTIONS AND VERIFIED ANSWERS

Institution
BIO 227
Course
BIO 227

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Define Solute(s)


Give this one a try later!


The stuff that is dissolved in a solution.

Present in smaller amounts.




Define Mass


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, Mass is equal to the amount of matter in an object.

Mass does not change, the weight can change base on gravitational
pull, but mass always stays the same.




Define Cytoplasmic organelles


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-Metabolic machinery of cell.




Define Microvilli


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-Fingerlike extensions of plasma membrane.

-Increase surface area for absorption.


-Core of actin filaments for stiffening.




What are the Lesser Elements of the Human Body?


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, Calcium (Ca), phosphorus (P), potassium (K), sulfur (S), sodium (Na),
chlorine (Cl), magnesium (Mg), iodine (I), and iron (Fe).

Make up About 3.9% of our body mass.




Why is Water a maintenance of life?


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It is Required for metabolism,
transporting substances, and
regulating the bodies temperature.




Define Peroxisomes


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Are also a type of vesicle only instead of containing digestive
enzymes like lysosomes do, they contain really angry oxygen.

Membranous sacs containing powerful oxidases and catalases.

Detoxify harmful or toxic substances.

Neutralize dangerous free radicals: highly reactive chemicals with
unpaired electrons.




Define Chemical Reactions


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, Chemical Reactions Occur whenever chemical bonds between atoms
are formed, rearranged, or broken.

All chemical reactions are theoretically reversible.


Many biological reactions are essentially irreversible due to:
Energy requirements.
and or Removal of products.

All chemical reactions are either exergonic or endergonic.




Define Cilia


Give this one a try later!


Whiplike, motile extensions on surfaces of certain cells.

-Contain microtubules and motor molecules.


-Cilia move substances across cell surfaces.

- Longer flagella propel whole cells (tail of sperm).




Identify at least four different functions of proteins in the human body.


Give this one a try later!


antibodies, hormones, molecular chaperones, and enzymes, Cell
surface receptors, Transport molecules.

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Institution
BIO 227
Course
BIO 227

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