Purdue BIO 203 Practice Exam 1 Latest Update Questions and 100% Verified Correct Answers Guaranteed A+

Purdue BIO 203 Practice Exam 1 Latest Update
2025-2026 50 Questions and 100% Verified
Correct Answers Guaranteed A+

A 67-year old man presents with symptoms of chronic kidney disease (CKD). Which of
the following is most likely to be true?

a. low cutaneous 7-dehydrocholesterol
b. low serum calcitriol

c. low blood potassium

d. increase of bone mass - CORRECT ANSWER: b. low serum calcitriol



A hydrogen ion consists of

a. one electron and one proton

b. two electrons and two protons
c. one electron and two protons

d. no electrons and one proton - CORRECT ANSWER: d. no electrons and one proton



A protein is observed to denature in solutions at or below a pH of 6.0. At which of the
following hydrogen ion concentrations (g/L) would this protein be safe from
denaturation?

a. 0.00001

b. 0.0001

c. 0.001

d. 0.00000001 - CORRECT ANSWER: d. 0.00000001



Aquaporins
a. form water channels

, b. form a bilayer in the plasma membrane

c. contain phosphatidylcholine

d. are clustered in the hydrophobic region of the membrane - CORRECT ANSWER: a.
form water channels



ATP is a

a. protein
b. phospholipid

c. nucleotide
d. trisaccharide - CORRECT ANSWER: c. nucleotide



Cell that is part of the immune system and is found in the epidermis (BEST answer)

a. keratinocyte

b. fibroblast
c. melanocyte

d. Langerhans - CORRECT ANSWER: d. Langerhans



Collagen IV is most likely to be found in

a. most ligaments

b. basement membranes
c. tendons
d. areolar connective tissue - CORRECT ANSWER: b. basement membranes



Combination of CoA with the two-carbon fragment formed from pyruvate the

a. cell cytoplasm

b. mitochondrial matrix
c. inner mitochondrial membrane