Biology 1610 FINAL USU ACTUAL EXAM QUESTIONS
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The most common isotope of hydrogen has one proton, no neutrons, and one
electron. An isotope of hydrogen with 1 neutron would have: - (ANSWER)an
atomic number of 1 and a mass number of 2
In a covalent bond: - (ANSWER)electrons are shared between atoms so that all
atoms have full outer shells
A property of a system that is present at one level of organization but absent at
the levels below is called: - (ANSWER)an emergent property
An ionic bond is - (ANSWER)weaker than a covalent bond
Modern taxonomy attempts to group organisms according to: -
(ANSWER)evolutionary history
The half-life of carbon 14 is 5,730 years. If you have a piece of wood in which 2%
of the carbon is carbon-14, and you bury it underground. Which of the following
statements is TRUE? - (ANSWER)After 5,730 years, 1% of the carbon would be
carbon-14.
Nitrogen has an atomic number of 7. This means that: - (ANSWER)nitrogen has 3
electrons missing from its outer shell
,The best description of the bond that binds hydrogen and oxygen together to
create a water molecule is: - (ANSWER)a polar covalent bond
The annual temperature range of Logan is larger than that of San Francisco largely
because: - (ANSWER)water has a high specific heat
Ice floats because: - (ANSWER)hydrogen bonding forces water molecules apart
when water freezes
Which of the following statements about hydrogen bonds is FALSE?
1. In a hydrogen bond, carbon and hydrogen are positively charged because they
attract electrons weakly.
2. Hydrogen bonds can form between two molecules.
3. Hydrogen bonds are formed when hydrogen shares electrons to form an ionic
bond.
4. In a hydrogen bonds, oxygen and nitrogen are negatively charged because they
attract electrons strongly.
5. Hydrogen bonds are much weaker than covalent bonds. - (ANSWER)Hydrogen
bonds are formed when hydrogen shares electrons to form an ionic bond.
A solution with 10 times more hydrogen ions than a solution with a pH of 5 would
have a pH of: - (ANSWER)4
,A prion is a: - (ANSWER)Protein
Which of the following is a polymer of glucose?
1. glycogen
2. glycerol
3. a monosaccharide
4. a polypeptide chain
5. sucrose - (ANSWER)glycogen
Unsaturated fats:
1. are produced mainly by animals
2. contain only two fatty acids
3. are generally liquid at room temperature
4. do not contain fatty acids
5. do not contain glycerol - (ANSWER)are generally liquid at room temperature
Phospholipids form bilayers because:
1. the fatty acids contain phosphates instead of hydrogens
2. phospholipids are polymers of fatty acids
3. the entire molecule is hydrophobic
4. one end of the molecule is hydrophobic; the other end is hydrophilic
, 5. they hydrogen bond with water which holds them in straight lines -
(ANSWER)one end of the molecule is hydrophobic; the other end is hydrophilic
A nucleotide is made up of:
1. a central carbon and an R group
2. a sugar, an amino group, and a nitrogenous base
3. amino acids attached to one another
4. a carboxyl group, an an amino group, and an R group
5. a sugar, a phosphate, and a nitrogen-containing base - (ANSWER)a sugar, a
phosphate, and a nitrogen-containing base
Which of the following statements about protein structure is TRUE?
1. An alpha-helix is an example of tertiary structure
2. Tertiary structure is determined by interactions among R-groups.
3. All proteins have quaternary structure.
4. A pleated sheet is an example of primary structure.
5. The same protein can have different primary structures - (ANSWER)Tertiary
structure is determined by interactions among R-groups.
Which of the following statements about polymers is TRUE?
1. Polymers of carbohydrates are formed by a dehydration reaction.
2. A protein is a polymer of nucleic acids
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100% VERIFIED) LATEST VERSION 2025!!
The most common isotope of hydrogen has one proton, no neutrons, and one
electron. An isotope of hydrogen with 1 neutron would have: - (ANSWER)an
atomic number of 1 and a mass number of 2
In a covalent bond: - (ANSWER)electrons are shared between atoms so that all
atoms have full outer shells
A property of a system that is present at one level of organization but absent at
the levels below is called: - (ANSWER)an emergent property
An ionic bond is - (ANSWER)weaker than a covalent bond
Modern taxonomy attempts to group organisms according to: -
(ANSWER)evolutionary history
The half-life of carbon 14 is 5,730 years. If you have a piece of wood in which 2%
of the carbon is carbon-14, and you bury it underground. Which of the following
statements is TRUE? - (ANSWER)After 5,730 years, 1% of the carbon would be
carbon-14.
Nitrogen has an atomic number of 7. This means that: - (ANSWER)nitrogen has 3
electrons missing from its outer shell
,The best description of the bond that binds hydrogen and oxygen together to
create a water molecule is: - (ANSWER)a polar covalent bond
The annual temperature range of Logan is larger than that of San Francisco largely
because: - (ANSWER)water has a high specific heat
Ice floats because: - (ANSWER)hydrogen bonding forces water molecules apart
when water freezes
Which of the following statements about hydrogen bonds is FALSE?
1. In a hydrogen bond, carbon and hydrogen are positively charged because they
attract electrons weakly.
2. Hydrogen bonds can form between two molecules.
3. Hydrogen bonds are formed when hydrogen shares electrons to form an ionic
bond.
4. In a hydrogen bonds, oxygen and nitrogen are negatively charged because they
attract electrons strongly.
5. Hydrogen bonds are much weaker than covalent bonds. - (ANSWER)Hydrogen
bonds are formed when hydrogen shares electrons to form an ionic bond.
A solution with 10 times more hydrogen ions than a solution with a pH of 5 would
have a pH of: - (ANSWER)4
,A prion is a: - (ANSWER)Protein
Which of the following is a polymer of glucose?
1. glycogen
2. glycerol
3. a monosaccharide
4. a polypeptide chain
5. sucrose - (ANSWER)glycogen
Unsaturated fats:
1. are produced mainly by animals
2. contain only two fatty acids
3. are generally liquid at room temperature
4. do not contain fatty acids
5. do not contain glycerol - (ANSWER)are generally liquid at room temperature
Phospholipids form bilayers because:
1. the fatty acids contain phosphates instead of hydrogens
2. phospholipids are polymers of fatty acids
3. the entire molecule is hydrophobic
4. one end of the molecule is hydrophobic; the other end is hydrophilic
, 5. they hydrogen bond with water which holds them in straight lines -
(ANSWER)one end of the molecule is hydrophobic; the other end is hydrophilic
A nucleotide is made up of:
1. a central carbon and an R group
2. a sugar, an amino group, and a nitrogenous base
3. amino acids attached to one another
4. a carboxyl group, an an amino group, and an R group
5. a sugar, a phosphate, and a nitrogen-containing base - (ANSWER)a sugar, a
phosphate, and a nitrogen-containing base
Which of the following statements about protein structure is TRUE?
1. An alpha-helix is an example of tertiary structure
2. Tertiary structure is determined by interactions among R-groups.
3. All proteins have quaternary structure.
4. A pleated sheet is an example of primary structure.
5. The same protein can have different primary structures - (ANSWER)Tertiary
structure is determined by interactions among R-groups.
Which of the following statements about polymers is TRUE?
1. Polymers of carbohydrates are formed by a dehydration reaction.
2. A protein is a polymer of nucleic acids
