Lipids,Biological Membranes and Transport MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Lipids,Biological Membranes and Transport, a fundamental topic in the field of Biochemistry. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Lipids,Biological Membranes and Transport MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Lipids,Biological Membranes and Transport mcq questions that explore various aspects of Lipids,Biological Membranes and Transport problems. Each MCQ is crafted to challenge your understanding of Lipids,Biological Membranes and Transport principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Biochemistry tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Lipids,Biological Membranes and Transport MCQs are your pathway to success in mastering this essential Biochemistry topic.

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Lipids,Biological Membranes and Transport MCQs | Page 2 of 16

Discover more Topics under Biochemistry

Q11.
Exocytosis is the secretion of proteins

a.

out of the cell across the plasma membrane into the extracellular space

b.

out of the cell across the plasma membrane into the intracellular space

c.

is the uptake of macromolecules from the extracellular space into the cell across the plasma membrane

d.

is the uptake of macromolecules from the intracellular space into the cell across the plasma membrane

Discuss
Answer: (a).out of the cell across the plasma membrane into the extracellular space
Q12.
The membrane proteins that catalyze active transport reactions differ from soluble enzymes as

a.

they are permanently changed during the reaction

b.

the substrates of the reaction are all outside the cell

c.

they do not enhance the rates of reaction

d.

the products of the reaction move in a specific direction

Discuss
Answer: (d).the products of the reaction move in a specific direction
Q13.
The movement of molecules across a membrane by passive transport does not require

a.

an input of metabolic energy

b.

internal energy

c.

vibrational energy

d.

none of these

Discuss
Answer: (a).an input of metabolic energy
Q14.
Peptidoglycan is a complex consisting of

a.

oligo-saccharide and protein

b.

polysaccharide and protein

c.

mono-saccharide and protein

d.

aminoacid and carbohydrate

Discuss
Answer: (a).oligo-saccharide and protein
Q15.
The mesosomes may be the sites of

a.

DNA replication and specialized enzymatic reactions

b.

RNA replications and specialized enzymatic reactions

c.

RNA replications and specialized cyclic reactions

d.

None of the above

Discuss
Answer: (a).DNA replication and specialized enzymatic reactions
Q16.
Which of the following is correct?

a.

Peroxisomes have a single boundary membrane

b.

Peroxisomes contain enzymes that degrade fatty acids and amino acids

c.

The byproduct of given reactions in (b) is toxic to cells

d.

All of the above

Discuss
Answer: (d).All of the above
Q17.
The smooth endoplasmic reticulum (SER) is the site of

a.

phospholipid synthesis

b.

amino acid synthesis

c.

carbohydrate synthesis

d.

protein synthesis

Discuss
Answer: (a).phospholipid synthesis
Q18.
Cholesterol is somewhat amphipathic due to

a.

the single hydroxyl along with the hydrocarbon nature of the remainder of the molecule

b.

the long branched hydrocarbon along with the four hydrocarbon rings

c.

the five-methyl groups along with the hydrocarbon chain

d.

the three six-membered rings along with the single five-membered ring

Discuss
Answer: (a).the single hydroxyl along with the hydrocarbon nature of the remainder of the molecule
Q19.
Bacteriorhodopsin

a.

absorbs light and pumps protons

b.

is an integral membrane protein

c.

contains primarily alpha-helical residues

d.

all of the above

Discuss
Answer: (d).all of the above
Q20.
In active transport, the membrane structure that functions is

a.

cholesterol

b.

integral proteins

c.

carbohydrates

d.

hydrophobic molecules

Discuss
Answer: (b).integral proteins
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