Practice Questions

TLS Online TPP Program

#Question id: 11502

Which of these statements is false and therefore does not support the hypothesis that certain eukaryotic organelles originated as bacterial endosymbionts? Such organelles

#Unit 9. Diversity of Life Forms

are roughly the same size as bacteria.
can be cultured on agar, because they make all their own proteins.
contain circular DNA molecules.
have ribosomes that are similar to those of bacteria.

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TLS Online TPP Program

#Question id: 33455

#Unit 1. Molecules and their Interaction Relevant to Biology

Which nitrogenous base can't be deaminated

TLS Online TPP Program

#Question id: 3448

#Unit 11. Evolution and Behavior

Which scientist devised a rule that predicts when natural selection should favor altruism?

TLS Online TPP Program

#Question id: 12077

#Unit 7. System Physiology – Animal

RU486 causes abortion if it is administered before or soon after implantation. What is the specific effect of RU486?

TLS Online TPP Program

#Question id: 28251

#Unit 5. Developmental Biology

the arrangement of axoneme in sperm propulsion system consist of___

TLS Online TPP Program

#Question id: 29484

#Unit 6. System Physiology – Plant

Physiological action of Cytokinins is given

a. Induce cell division in callus cells in the presence of an auxin

b. Promote bud or root formation from callus cultures

c. Delay senescence of leaves

d. Promote expansion of dicot cotyledons

Which of the following is correct