Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 48
TLS Online TPP Program

#Question id: 66

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

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. Stereoisomers that are mirror images of each other are called enantiomers.

  2. A carbon atom with four different substituents is said to be asymmetric, and asymmetric carbons are called chiral centers.

  3. Pairs of stereoisomers that are not mirror images of each other are called diastereomers.

  4. An equimolar solution of the two enantiomers (a racemic mixture) rotates the plane of plane-polarized light in a particular direction.

More Questions
TLS Online TPP Program

#Question id: 23230

#Unit 2. Cellular Organization

What is the arrangement of filament in flagella which allows it to move?
TLS Online TPP Program

#Question id: 7240

#Unit 5. Developmental Biology

Given below are the list of some organism (column A) and determination of their dorsal-ventral axis (column B)

S.No.

Organism

(Column A)

S.No

Determination of dorsal ventral axis

(Column B)

A.

Chick

i.

sperm entry point and cortical rotation

lead to specification of dorsal side opposite the

point of sperm entry

B.

Zebrafish

ii.

initial symmetry-breaking event unknown.

Localization of maternal Ndr1 and nuclear b -catenin species dorsal side and position of organizer

C.

Xenopus

iii.

interaction between inner cell mass

and trophectoderm

D

Mouse

iv.

posterior marginal zone specifies ventral end

of dorso-ventral axis

 Choose the correct option:
TLS Online TPP Program

#Question id: 19093

#Unit 4. Cell Communication and Cell Signaling

Necrotrophs leads to___
a) Inhibiting pathogen growth
b) Apoptosis
c) ROS generation
d) Narrow host range
TLS Online TPP Program

#Question id: 3984

#Unit 3. Fundamental Processes

Which of the following statements about regulation of the lac operon is true?
TLS Online TPP Program

#Question id: 3360

#Unit 11. Evolution and Behavior

Which of the following does not alter hardy Weinberg equability?