7/21/25, 8:48
AM
MBIO 1220 EXAM QUESTIONS AND ANSWERS
WITH COMPLETE SOLUTIONS VERIFIED GRADED
A++ LATEST RELEASED VERSION 2025/2026
Terms in this set (122)
Atom smallest chemical unit of matter
Element composed of one type of atom
Molecule two or more atoms combined
Chemical bonds formed between atoms through interactions of
electrons in their outer shells
Ion An atoms that has a positive or negative charge
Ionic Bonds result from attraction between ions of opposite
charges
Covalent bonds Chemical bond that shares pairs of electrons
Hydrogen Bonds Occur when hydrogen atom is covalently
bonded to oxygen or other large
molecules
4 characteristics of can dorm four hydrogen bonds with
water that make it other water molecules, excellent
highly useful solvent, facilitates the splitting and
joining of hydrogen ions and hydroxide
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AM
ions, excellent temperature buffer
Organic compounds any compound that contains both carbon and
hydrogen
4 major classes of carbohydrates, lipids, proteins, and nucleic acids
organic molecules that
compose living
things
Carbohydrates Ready source of energy for cells, polar, and
contain C,H,O
3 major groups of monosaccharides, disaccharides,
carbohydrates polysaccharides
Lipids essential to the structure and function of
membranes, used for energy storage
Steroids (sterols) Lipids found in eukaryotes (not bacteria), have a
4 ring structure
Proteins Made up of amino acids (building blocks),
contains C,H,O,N. Required in all aspects
of cell structure and function
enzymes increase the rate at which chemical reactions
take place in living organisms
Proteins contain how typically 20
many amino acids
Nucleic acids DNA, RNA
3 parts of a Nucleotide Nitrogenous base, pentose sugar, phosphate
DNA (A,T,C,G) 2 strands held together by hydrogen bonds
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10
AM
MBIO 1220 EXAM QUESTIONS AND ANSWERS
WITH COMPLETE SOLUTIONS VERIFIED GRADED
A++ LATEST RELEASED VERSION 2025/2026
Terms in this set (122)
Atom smallest chemical unit of matter
Element composed of one type of atom
Molecule two or more atoms combined
Chemical bonds formed between atoms through interactions of
electrons in their outer shells
Ion An atoms that has a positive or negative charge
Ionic Bonds result from attraction between ions of opposite
charges
Covalent bonds Chemical bond that shares pairs of electrons
Hydrogen Bonds Occur when hydrogen atom is covalently
bonded to oxygen or other large
molecules
4 characteristics of can dorm four hydrogen bonds with
water that make it other water molecules, excellent
highly useful solvent, facilitates the splitting and
joining of hydrogen ions and hydroxide
1/
10
, 7/21/25, 8:48
AM
ions, excellent temperature buffer
Organic compounds any compound that contains both carbon and
hydrogen
4 major classes of carbohydrates, lipids, proteins, and nucleic acids
organic molecules that
compose living
things
Carbohydrates Ready source of energy for cells, polar, and
contain C,H,O
3 major groups of monosaccharides, disaccharides,
carbohydrates polysaccharides
Lipids essential to the structure and function of
membranes, used for energy storage
Steroids (sterols) Lipids found in eukaryotes (not bacteria), have a
4 ring structure
Proteins Made up of amino acids (building blocks),
contains C,H,O,N. Required in all aspects
of cell structure and function
enzymes increase the rate at which chemical reactions
take place in living organisms
Proteins contain how typically 20
many amino acids
Nucleic acids DNA, RNA
3 parts of a Nucleotide Nitrogenous base, pentose sugar, phosphate
DNA (A,T,C,G) 2 strands held together by hydrogen bonds
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