BIO 181 EXAM 1 SHAFFER
VERIFIED ANSWERS 2025/2026
A high pH is typical of - correct answerbases
A low pH is typical of - correct answeracids
A molecule that is _____ loses electrons, and a molecule that is _______ gains
electrons.• - correct answerOxidized; Reduced
A sample of fabric from a cave in Nepal is tested for its Carbon isotope ratios.
It is found that only 50% is carbon 14. How old would that date the sample to
be? - correct answer5,730 years old
A sample of fossilized T-Rex bone is shown to have 0% carbon 14. How old
would that make the sample? - correct answerC-14 is not the appropriate
isotope for such ancient fossils
A type of protein that acts as a catalyst for chemical reactions (lowering
activation energy) - correct answerenzyme
All things being equal which fatty acid will have a higher melting point? -
correct answerLong-chain fatty acid
All things being equal which fatty acid will have a lower melting point? -
correct answerShort-chain fatty acid
An early experiment: out of what material does a plant create its matter? -
correct answerair
, Cellular respiration releases energy. In cellular respiration: - correct answerA.
Organic molecules such as carbohydrates are converted to chemical energy
that can be used to do the work of the cell
B. The chemical potential energy stored in organic molecules is converted to
chemical energy that can be used to do the work of the cell
C. Chemical potential energy in the bonds of ADP is transferred to the
chemical potential energy in the bonds of ATP.
-all correct
Diagnose this plant's nutrient deficiency - correct answerZinc Deficiency
Diagnose this plant's nutrient deficiency: - correct answerNitrogen Deficiency
During ETC, the pH of the matrix is ____ than the inter membrane space. -
correct answerhigher
Even though the full oxidation of glucose is exergonic, some of the reactions in
cellular respiration are endergonic. T or F - correct answertrue
Excess cellular ATP has what effect on phosphofructokinase during glycolysis?
- correct answerAllosteric binding inhibition
Exothermic or Endothermic? - correct answerexothermic
From an animal's perspective, what is the most important by-product of
photosynthesis? - correct answer-Oxygen
-Carbohydrate foods
Glycolysis is - correct answeranaerobic
How many amino acids is all of life built upon? - correct answer20
If oxygen is not present, the next stage after glycolysis will be - correct
answerFermentation
Ionic or Covalent Bond? - correct answerCovalent
Ionic or Covalent Bond? - correct answerionic
VERIFIED ANSWERS 2025/2026
A high pH is typical of - correct answerbases
A low pH is typical of - correct answeracids
A molecule that is _____ loses electrons, and a molecule that is _______ gains
electrons.• - correct answerOxidized; Reduced
A sample of fabric from a cave in Nepal is tested for its Carbon isotope ratios.
It is found that only 50% is carbon 14. How old would that date the sample to
be? - correct answer5,730 years old
A sample of fossilized T-Rex bone is shown to have 0% carbon 14. How old
would that make the sample? - correct answerC-14 is not the appropriate
isotope for such ancient fossils
A type of protein that acts as a catalyst for chemical reactions (lowering
activation energy) - correct answerenzyme
All things being equal which fatty acid will have a higher melting point? -
correct answerLong-chain fatty acid
All things being equal which fatty acid will have a lower melting point? -
correct answerShort-chain fatty acid
An early experiment: out of what material does a plant create its matter? -
correct answerair
, Cellular respiration releases energy. In cellular respiration: - correct answerA.
Organic molecules such as carbohydrates are converted to chemical energy
that can be used to do the work of the cell
B. The chemical potential energy stored in organic molecules is converted to
chemical energy that can be used to do the work of the cell
C. Chemical potential energy in the bonds of ADP is transferred to the
chemical potential energy in the bonds of ATP.
-all correct
Diagnose this plant's nutrient deficiency - correct answerZinc Deficiency
Diagnose this plant's nutrient deficiency: - correct answerNitrogen Deficiency
During ETC, the pH of the matrix is ____ than the inter membrane space. -
correct answerhigher
Even though the full oxidation of glucose is exergonic, some of the reactions in
cellular respiration are endergonic. T or F - correct answertrue
Excess cellular ATP has what effect on phosphofructokinase during glycolysis?
- correct answerAllosteric binding inhibition
Exothermic or Endothermic? - correct answerexothermic
From an animal's perspective, what is the most important by-product of
photosynthesis? - correct answer-Oxygen
-Carbohydrate foods
Glycolysis is - correct answeranaerobic
How many amino acids is all of life built upon? - correct answer20
If oxygen is not present, the next stage after glycolysis will be - correct
answerFermentation
Ionic or Covalent Bond? - correct answerCovalent
Ionic or Covalent Bond? - correct answerionic
