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TCC Biology Exam 1 Questions and answers, 100% Accurate
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TCC Biology Exam 1 Questions and answers, 100% Accurate A scientific theory is: - -a concept that is supported by experimental evidence that explains the facts in an area of study. energy utilization - -shares which fundamental property of life with actual living organisms inductive reas...

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  • February 4, 2023
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  • 2022/2023
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  • tcc biology exam 1 questions and answers
  • 100 accurate a scientific theory is a concept that is supported by experimental evidence that explains the facts in an area of study energy utilizati

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TCC Biology Exam 1 Questions and
answers, 100% Accurate

A scientific theory is: - ✔✔-a concept that is supported by experimental evidence that explains the facts
in an area of study.



energy utilization - ✔✔-shares which fundamental property of life with actual living organisms



inductive reasoning - ✔✔-A yellow jacket, an insect in the order hymenoptera, stung you. Then a wasp,
an insect in hymenoptera, stung you as well. A hornet, an insect in hymenoptera, stung you last. It is an
observable pattern that all insects in this order must have stingers.



Bicarbonate ions in the blood can absorb hydrogen ions, keeping the pH balanced. Therefore
bicarbonate is acting as a ______ in the blood. - ✔✔-buffer



When two atoms share a pair of electrons, the bonding is referred to as - ✔✔-covalent



Water molecules are polar with ends that exhibit partial positive and negative charges. These opposite
charges allow water molecules to attract each other through - ✔✔-hydrogen bonds



All atoms tend to fill their outer energy levels with the maximum number of electrons, usually eight.
Depending on whether atoms satisfy the octet rule will predict - ✔✔-chemical behavior of the atoms



The amino acid glycine (C3NO2H6) is a(an): - ✔✔-organic (biological) molecule



The pH of water is: - ✔✔-7



10. Your dog becomes ill and you rush him to the veterinarian's office. A technician draws blood from
your dog's leg for a vet-ordered lab test. After a few minutes the lab results are given to the vet, who
immediately grabs a bottle from a shelf and begins to fill a syringe with an unknown fluid. You inquire

, about the fluid, and the vet informs you that the fluid is necessary to manage your dog's metabolic
acidosis. Based on the information provided, what is acidosis, and what is the likely effect of the
veterinarian's injection? - ✔✔-a. Acidosis means that your dog's blood pH has decreased from its normal
level, and an injection of buffering solution is required to reverse the condition.



11. Water is most dense and thus heaviest at 4°C. At 0°C, ice forms and can float on liquid water.
Suppose ice were most dense at 0°C. What would happen in a lake at this temperature? - ✔✔-b. The ice
would cover the bottom of the aquatic system and would build up in layers over time.



The reaction (H2 + F2 → 2HF) is an example of a redox reaction. In reality, two half reactions are
occurring. The half reaction (H2 → 2H+ + 2e-) is a(n) - ✔✔-d. oxidation reaction



The water strider will walk around on the surface of water without sinking into it. What properties of
water allow this insect to walk on water? - ✔✔-The surface tension created by hydrogen bonds is
greater than the weight of the insect.



chitin - ✔✔-A modified form of cellulose (a polysaccharide) found in the exoskeletons of insects and
crustaceans is known as



lipids - ✔✔-These biological compounds are nonpolar and insoluble in water



dehydration reaction - ✔✔-The covalent bonds connecting monomer units in sugars can be formed by
the removal of a water molecule. This reaction is referred to as



DNA molecules - ✔✔-Macromolecules that are used by most organisms to store hereditary information
are called



Monosaccharide - ✔✔-Starch is a type of polysaccharide formed of structural units called



Amino Acids - ✔✔-Proteins are polymers formed of structural units (monomers) called

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