Biology 150 exam 1 || A+ GRADED
Cell theory correct answers All organisms are composed of one or more cells
-cells arise from other organisms
-contain hereditary information of organism of which they are part of
-DNA holds the genetic information
Scientific Method correct answers Observation
Question
Hypothesis
Test
Results
Conclusion
When are atoms electrically neutral? correct answers Number of protons & electrons balance
Isotope correct answers Forms of an element with a different number of electrons
Ion correct answers Atom where total number of electrons is not equal to the total number of
protons, that results in giving the atom a positive or negative electrical charge
Atomic number correct answers Number of protons an atom of that element has
Atomic mass correct answers The sum of protons and neutrons in an atom of that element
Covalent bond correct answers When 2 atoms share electrons
Ionic bonds correct answers The electrons are completely transferred from one atom to
another
Acidic solution correct answers pH <7
Alkaline/basic solution correct answers pH>7
Condensation Reaction correct answers Form a new bond with the loss of a water molecule,
amino acid molecules form together and remove a water molecule
Peptide bonds correct answers Carboxyl group + amino group release water molecule = water
and 2 amino acids
Transcription correct answers -> RNA
Transcription correct answers (Ribosomes) -> protein
Primary structure correct answers Sequence DNA
Secondary structure correct answers -alpha helix
-pleated sheet
Tertiary structure correct answers Many bonds involved -> 3D shape
Cell theory correct answers All organisms are composed of one or more cells
-cells arise from other organisms
-contain hereditary information of organism of which they are part of
-DNA holds the genetic information
Scientific Method correct answers Observation
Question
Hypothesis
Test
Results
Conclusion
When are atoms electrically neutral? correct answers Number of protons & electrons balance
Isotope correct answers Forms of an element with a different number of electrons
Ion correct answers Atom where total number of electrons is not equal to the total number of
protons, that results in giving the atom a positive or negative electrical charge
Atomic number correct answers Number of protons an atom of that element has
Atomic mass correct answers The sum of protons and neutrons in an atom of that element
Covalent bond correct answers When 2 atoms share electrons
Ionic bonds correct answers The electrons are completely transferred from one atom to
another
Acidic solution correct answers pH <7
Alkaline/basic solution correct answers pH>7
Condensation Reaction correct answers Form a new bond with the loss of a water molecule,
amino acid molecules form together and remove a water molecule
Peptide bonds correct answers Carboxyl group + amino group release water molecule = water
and 2 amino acids
Transcription correct answers -> RNA
Transcription correct answers (Ribosomes) -> protein
Primary structure correct answers Sequence DNA
Secondary structure correct answers -alpha helix
-pleated sheet
Tertiary structure correct answers Many bonds involved -> 3D shape
