B1 Exam 1 Practice 1

Amino acid attached to the heme ring of Hb?

• tryptophan

• proline

• histidine

• serine

Hexokinase and glucokinase belong to which class of enzymes?

• transferase

• lyase

• isomerase

• hydrolase

Glucose and galactose are:

• structural isomers

• enantiomers

• achiral

• epimers

Which amino acid contains an amide for its R-group?

• aspartate

• asparagine

• lysine

• arginine

Which amino acid has neither L or D form?

• glutamine

• phenylalanine

• glycine

• proline

Raising the concentration of H⁺ ions will have what affect?

• the pH will increase

• the Hb oxygen binding curve will shift to the left

• the enzyme velocity will shift from hyperbolic to sigmoidal

• the amino group on lysine will be positively charged

Tags

NGSS.HS-PS1-5

Enzymes are greatly affected by all the following EXCEPT:

• high temperature

• Gibbs free energy

• low pH

• substrate concentration

If K_eq = 1, then ___.

• ΔG > 0

• ΔG > 1

• ΔG = 1

• ΔG = 0

When [S] = K_m, then_____.

• the velocity is first order

• v_o= 1/2V_max

• the velocity is zero

Tags

NGSS.HS-PS1-5

What is the strongest intermolecular force between glutamate and lysine in a protein?

• ionic bonding

• hydrogen bonding

• hydrophobic interactions

• polar bonds