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Bio 151 VCU test #1 Questions and Correct Verified Answers $15.49   Add to cart

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Bio 151 VCU test #1 Questions and Correct Verified Answers

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  • BIO
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  • BIO

what is the charge of an atoms core? positive atomic mass number of protons and neutrons in an atom orbital the space where an electron orbits an atom's nucleus Isotope atoms of an element that have a different number of neutrons Ionic bond atoms held together by electrostatic attract...

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  • November 15, 2024
  • 60
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • BIO
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Top Mark Questions and Correct Verified Answers



Bio 151 VCU test #1 Questions and
Correct Verified Answers
what is the charge of an atoms core?


✓ positive




atomic mass


✓ number of protons and neutrons in an atom




orbital


✓ the space where an electron orbits an atom's nucleus




Isotope


✓ atoms of an element that have a different number of neutrons




Ionic bond


✓ atoms held together by electrostatic attraction. Attraction of oposite ions




cation


✓ atoms that lose an electron



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anion GAIN=AIN


✓ atom that gained an electron




covalent bonding


✓ chemical bond formed between 2 atoms by the sharing of an electron



✓ very strong




hydrogen bonding


✓ covalent bond between 2 hydrogen atoms




chemical equillibrium


✓ most chemical reactions are reversible




equilibrium


✓ concentrations of reactants and products are no longer changing




cohesion COFRIEND=LIKE


✓ the attraction of like molecules




adhesion

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✓ the attraction of dissimilar molecules




acid


✓ chemical compounds that donates H+ ions to solutions

✓ below 7 on the scale




base


✓ compound that accepts H+ ions and removes them from a solution

✓ above 7




Isomers


✓ compounds with the same molecular formula but different structures




Hydroxyl group R-OH


✓ containing an oxygen atom connected by a covalent bond to a hydrogen atom



✓ found on amino acids and nucleic acids

✓ typical of alcohols and carbohydrates




Carboxyl group -COOH




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✓ 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


✓ 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


✓ 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


✓ small organic molecules



✓ monosachharide,amino acids, fatty acids, nucleotides




Dehydration reaction

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