CHEM 210 Biochemistry Final Exam Portage Learning Questions with 100% Verified Answers Gua, Exams of Biochemistry

Download CHEM 210 Biochemistry Final Exam Portage Learning Questions with 100% Verified Answers Gua and more Exams Biochemistry in PDF only on Docsity!

CHEM 210 Biochemistry

Final Exam Portage

Learning Questions with

100% Verified Answers

Guarantee Pass 2025

CHEM 210 Biochemistry Final Exam

Portage Learning Questions with

100% Verified Answers Guarantee

Pass 2025

CHEM 210 final exam

T/F nitrogen is called the superglue of the chemical world --- correct answer --- false

T/F large elements, such as strontium, are common in biomolecules --- correct answer --- false

T/F the time it takes for a compound to flow through a metabolic pathway is called the payoff phase --- correct answer --- false

T/F proteins, carbohydrates, and fats all get broken down into acetyl- CoA --- correct answer --- true

T/F a fat is a lipid molecule that is a solid at room temperature --- correct answer --- true

what is a unique molecule. which of the following contributes to water's unique place in the chemical world?

A. the geometry of the molecule

B. the polarity of the O-H bonds

C. the ability of water molecules to hydrogen bond

D. the bond angle of water

E. all of the answers are correct --- correct answer --- E. all of the answers are correct

the H+ concentration of a solution is 7.9x10^-13M. what is the pH?

A. -6.

B. 6.

C. 11.

D. -12.

E. 12.1 --- correct answer --- E. 12.

which of the following is the enthalpy change of a reaction?

A. delta G

B. delta S

C. delta H

D. delta F

E. none of the above --- correct answer --- C. delta H

a globular protein is an example of a protein _____

A. motif

B. conformation

C. secondary structure

D. quaternary structure

E. amino acid --- correct answer --- B. conformation

any molecule or ion that is necessary for an enzyme's function is called a ____

A. cofactor

B. coreactant

C. coproduct

D. bienzyme

a particular lipid is a liquid at room temperature, so it is called a(n)___

A. oil

B. fat

C. lipid

D. membrane

E. sphingolipid --- correct answer --- A. oil

the following separates life from non-life

A. cellular membranes

B. carbohydrates that provide the necessary energy

C. fats that provide energy to organisms

D. protein transporting oxygen

E. none of the above --- correct answer --- A. cellular membranes

the primary sequence of proteins is written _____

A. N to C

B. C to N

C. 5' to 3'

D. 3' to 5'

E. both A and D --- correct answer --- A. N to C

A lipid is______

A. a fat

B. an oil

C. a molecule that dissolves in a non-polar solvent

D. is made from isoprene units

E. is water soluble --- correct answer --- C. a molecule that dissolves in a non-polar solvent

lipids are catabolized by the _____ pathway

A. glycolysis

B. beta-oxidation

C. urea cycle

D. both A and C

E. both B and C --- correct answer --- B. beta-oxidation

T/F small elements such as nitrogen, are common in biomolecules --- correct answer --- true

T/F the time it takes for a compound to flow through a metabolic pathway is called the flux --- correct answer --- true

T/F carbohydrates and fats all get broken down into NADH and FADH in energy production --- correct answer --- true

T/F a fat is a lipid molecule that is liquid at room temperature --- correct answer --- false

In RNA, guanine always pairs with ________.

A. thymine

B. guanine

C. cytosine

D. uracil

E. both A and B --- correct answer --- C. cytosine

water is considered a polar solvent due to attractive forces known as hydrogen bonds. a hydrogen bond is _______

A. a covalent bond between H and O

B. the polar O-H bond in water where the dipoles arrows are pointed toward the hydrogen atom

C. an ionic bond between H and another atom

D. an interaction on different molecules where partially negative atoms of F, O, or N interact with partially positive hydrogen atoms

E. a bond that is stronger than a covalent bond --- correct answer --- D. an interaction on different molecules where partially negative atoms of F, O, or N interact with partially positive hydrogen atoms

which attribute contributes to water's unusual properties?

A. the geometry or the molecule

B. the polarity of the O-H bonds

C. the ability of water molecules to hydrogen bond

D. the bond angle of water

E. all of the answers are correct --- correct answer --- E. all of the answers are correct

the H+ concentration of a solution is 6.3x10^-2M. what is the pH?

A. -1.

E. both B and C --- correct answer --- C. coenzyme

the following are all examples of a protein's functioning in cells except______

A. building block for cellulose

B. catalysis (enzymes)

C. transport of molecules

D. structure of ribosomes

E. communication (hormones) --- correct answer --- A. building block for cellulose

a particular lipid is a solid at room temperature, so it is called a(n)_____

A. carotenoid

B. oil

C. sphingolipid

D. fat

E. membrane --- correct answer --- D. fat

carbohydrates are catabolized by the _____ pathway

A. glycolysis

B. beta-oxidation

C. urea cycle

D. both A and C

E. both B and C --- correct answer --- A. glycolysis

which of the following is the free-energy change of a reaction?

A. delta G

B. delta S

C. delta H

D. delta F

E. none of the above --- correct answer --- A. delta G

proteins are catabolized by the ____ pathway

A. glycolysis

B. beta-oxidation

C. urea cycle

D. both A and C

A. enzymes that catalyze metabolic reactions

B. carbohydrates that provide the necessary structure

C. fats that provide energy to organisms

D. lipid bilayer surrounding the cell

E. none of the above --- correct answer --- D. lipid bilayer surrounding the cell