Biology 150 exam 1 Questions with
complete solution (7 pgs)
Cell theory - correct answer ✔All organisms are comppsed of one or more
cells
-cells arise from other organisms
-contain hereditary information of organsism of which they are part of
-DNA holds yhe gebetic infprmation
Scientific Method - correct answer ✔Observation
Question
Hypothesis
Test
Results
Conclusion
When are atoms electrically neutral? - correct answer ✔Number of protons &
electrons balance
Isotope - correct answer ✔Forms of an element with a dofferent number of
electrons
Ion - correct answer ✔Atom where total number of wlectrons is not equal to
the total njmber of protons, that results in goving the atom a positive or
negative electrical charge
Atomic number - correct answer ✔Nimber of protons an atom of that element
has
, Atomic mass - correct answer ✔The sum of protons and neutrons in an atom
of that element
Covalent bond - correct answer ✔When 2 atoms share electrons
Ionic bonds - correct answer ✔The electrons are completely transferred from
one atom to another
Acidic solution - correct answer ✔pH <7
Alkaline/basic solution - correct answer ✔pH>7
Condensation Reaction - correct answer ✔Form a new bond with the loss of
a water molecule, amino acid molecules form together and remove a water
molecule
Peptode bonds - correct answer ✔Carboxyl group + amino group release
water molecule = water and 2 amino acids
Transcription - correct answer ✔-> RNA
Transcription - correct answer ✔(Ribosomes) -> protein
Primary structure - correct answer ✔Sequence DNA
Secondary structure - correct answer ✔-alpha helix
-pleated sheet
complete solution (7 pgs)
Cell theory - correct answer ✔All organisms are comppsed of one or more
cells
-cells arise from other organisms
-contain hereditary information of organsism of which they are part of
-DNA holds yhe gebetic infprmation
Scientific Method - correct answer ✔Observation
Question
Hypothesis
Test
Results
Conclusion
When are atoms electrically neutral? - correct answer ✔Number of protons &
electrons balance
Isotope - correct answer ✔Forms of an element with a dofferent number of
electrons
Ion - correct answer ✔Atom where total number of wlectrons is not equal to
the total njmber of protons, that results in goving the atom a positive or
negative electrical charge
Atomic number - correct answer ✔Nimber of protons an atom of that element
has
, Atomic mass - correct answer ✔The sum of protons and neutrons in an atom
of that element
Covalent bond - correct answer ✔When 2 atoms share electrons
Ionic bonds - correct answer ✔The electrons are completely transferred from
one atom to another
Acidic solution - correct answer ✔pH <7
Alkaline/basic solution - correct answer ✔pH>7
Condensation Reaction - correct answer ✔Form a new bond with the loss of
a water molecule, amino acid molecules form together and remove a water
molecule
Peptode bonds - correct answer ✔Carboxyl group + amino group release
water molecule = water and 2 amino acids
Transcription - correct answer ✔-> RNA
Transcription - correct answer ✔(Ribosomes) -> protein
Primary structure - correct answer ✔Sequence DNA
Secondary structure - correct answer ✔-alpha helix
-pleated sheet
