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Bio 151 VCU test #1 Practice Questions and Answers $12.49   Add to cart

Exam (elaborations)

Bio 151 VCU test #1 Practice Questions and Answers

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  • VCU 2025
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  • VCU 2025

Bio 151 VCU test #1 Practice Questions and Answers what is the charge of an atoms core? - ANSWER-positive atomic mass - ANSWER-number of protons and neutrons in an atom orbital - ANSWER-the space where an electron orbits an atom's nucleus Isotope - ANSWER-atoms of an element that have a differ...

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  • October 30, 2024
  • 44
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • VCU 2025
  • VCU 2025
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Emillect
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Bio 151 VCU test #1 Practice Questions

and Answers


what is the charge of an atoms core? - ANSWER✔✔-positive


atomic mass - ANSWER✔✔-number of protons and neutrons in an atom


orbital - ANSWER✔✔-the space where an electron orbits an atom's nucleus


Isotope - ANSWER✔✔-atoms of an element that have a different number of neutrons


Ionic bond - ANSWER✔✔-atoms held together by electrostatic attraction. Attraction of oposite ions


cation - ANSWER✔✔-atoms that lose an electron


anion GAIN=AIN - ANSWER✔✔-atom that gained an electron


covalent bonding - ANSWER✔✔-chemical bond formed between 2 atoms by the sharing of an electron




very strong




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hydrogen bonding - ANSWER✔✔-covalent bond between 2 hydrogen atoms


chemical equillibrium - ANSWER✔✔-most chemical reactions are reversible


equilibrium - ANSWER✔✔-concentrations of reactants and products are no longer changing


cohesion COFRIEND=LIKE - ANSWER✔✔-the attraction of like molecules


adhesion - ANSWER✔✔-the attraction of dissimilar molecules


acid - ANSWER✔✔-chemical compounds that donates H+ ions to solutions


below 7 on the scale


base - ANSWER✔✔-compound that accepts H+ ions and removes them from a solution


above 7


Isomers - ANSWER✔✔-compounds with the same molecular formula but different structures


Hydroxyl group R-OH - ANSWER✔✔-containing an oxygen atom connected by a covalent bond to a

hydrogen atom




found on amino acids and nucleic acids



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typical of alcohols and carbohydrates


Carboxyl group -COOH - ANSWER✔✔-found on organic acids like amino acids and nucleic acids.


Polar group due to polar covalency between O and H and O and C


readily ionizes in water to release H-


Amino group - ANSWER✔✔-in chemistry, functional group that consists of a nitrogen atom attached by

single bonds to hydrogen atoms




polar group due to polar covalency between N and H's


basic group found on amino acids and nucleic acids


Phosphate group - ANSWER✔✔-found on nucleoside phosphates like ATP, GTP, etc. and on nucleic acids

which are made from nucleoside phosphates


very polar.


Transfers energy between organic molecules


Monomers - ANSWER✔✔-small organic molecules




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monosachharide,amino acids, fatty acids, nucleotides


Dehydration reaction - ANSWER✔✔-removal of water to form bonds


polymers - ANSWER✔✔-many monomers bonded together


form large organic molecules


carbohydrates - ANSWER✔✔-sugars


disaccharides - ANSWER✔✔-composed of two monosaccharides product of condensation of Hexoses


polysaccharids - ANSWER✔✔-polymers of thousands of monosaccharides.


long term energy storage


glycogen - ANSWER✔✔-multi branched polysachharide of glucose. short term storage in animals


Lipids - ANSWER✔✔-Fats, steroids


fatty acids - ANSWER✔✔-long chain hydrocarbons terminating in a carboxyl group


saturated fats - ANSWER✔✔-fat molecules with all single bonds between carbon molecules




solid at room temps


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