Practice Questions

TLS Online TPP Program

#Question id: 66

Which of the following statements regarding isomerism is incorrect regarding biomolecules?

#SCPH05 I Biotechnology

Stereoisomers that are mirror images of each other are called enantiomers.
A carbon atom with four different substituents is said to be asymmetric, and asymmetric carbons are called chiral centers.
Pairs of stereoisomers that are not mirror images of each other are called diastereomers.
An equimolar solution of the two enantiomers (a racemic mixture) rotates the plane of plane-polarized light in a particular direction.

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TLS Online TPP Program

#Question id: 1541

#SCPH01 Biochemistry

Nonphagocytic cell of immune system,

TLS Online TPP Program

#Question id: 4945

#SCPH28 | Zoology

Which is a defining characteristic that all protobionts had in common?

TLS Online TPP Program

#Question id: 8916

#SCPH05 I Biotechnology

What do animals as diverse as corals and monkeys have in common?

TLS Online TPP Program

#Question id: 12932

#SCPH05 I Biotechnology

Why mRNA cannot be used directly in cloning?

TLS Online TPP Program

#Question id: 944

#SCPH06 I Botany

Because they lack aspartate kinase and aspartate semialdehyde dehydrogenase, ________ cannot synthesize lysine, methionine or threonine.