Home
Class 12
BIOLOGY
Assertion: Coacervates are believed to b...

Assertion: Coacervates are believed to be the precursors of life.
Reason: Coacervates were self-duplicating aggregates of proteins surrounded by lipid molecules.

A

If both assertion and reason are true and reason is the correct explaination of assertion

B

If both assertion and reason are true but reason is not correct explaination of assertion

C

If assertion is true but reason is false

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
C

Oparin and sydney fox held that large organic molecules synthesised abitotically on primitive earth and formed large colloidal particles were called coacervates.In coacervates,liid molecules are joined end to end forming a layer around each aggregate.This represents a single lipid membrane,Coacervates divide by budding like bacteria.
Promotional Banner

Similar Questions

Explore conceptually related problems

Coacervates were large colloidal aggregates named by

Oparin's coacervates fail to fulfill the requirement as a candidate of probable precursors of life because

Assertion : The first life originated in water . Reason : Conditions were favorable for the origin of life in water.

Assertion : All enzymes are not proteins. Reason : RNA molecules that possess catalytic activity are called ribozymes.

Assertion- A cell membrane shows fluid behaviour. Reason- A membrane is a mosaic or composite of diverse lipids and proteins.

Assertion: Life originated in water. Reason: Primitive waterbodies were alkaline.

Assertion : Lysosomes are capable of digesting carbohydrates, proteins, lipids and nucleic acids. Reason : Lysosomes are rich in hydrolytic enzymes like lipases, proteases and carbohydrates.

Assertion A : In dializer the plasma proteins of the blood, cannot be filtered but molecules like urea, uric acid, creatinine and ions can be filtered Reason R: The cellophane membrane used in dializer is permeable to macromolecules but impermeable to micromolecules

Assertion : Vitamin A is 11-cis-retinal, the lipid prosthetic group of the protein opsin in visual purple. Its deficiency affects all tissues , but the eyes are most readily affected. Reason : Youngs lacking a liver store of this vitamin are most affected by deficiency, which causes Xeropthalmia in human infants and young children .

Coacervates were formed by (a) Radiations (b) Polymerisation (c) Polymerisation and aggregation (d) DNA