Practice Questions

TLS Online TPP Program

#Question id: 5118

Which of the following is not a mechanism by which cells communicate with each other?

#Unit 5. Developmental Biology

transcription factors are secreted from one cell and taken up by the target cell, where they influence gene expression
cell surface molecules on adjacent cells interact and initiate a signal transduction process that influences cellular behavior and gene expression
cells form gap junctions with adjacent cells, allowing the passage of small molecules
cells secrete proteins and small hydrophilic molecules, which interact with cell surface receptors on target cells and initiate a signal transduction process that influences cellular behavior and gene expression

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TLS Online TPP Program

#Question id: 20024

#Unit 13. Methods in Biology

Precipitation reaction are recognise by the formation of

b) Agglutination

c) Ordered structure of antigen and antidody

d) Antibody must be bivalent

TLS Online TPP Program

#Question id: 28074

#Unit 6. System Physiology – Plant

P680 & P700 exist in various state, and each state have their own different properties

(a) P680 - absorbs light

(b) P680⁺ - strongest oxidant

(c) P680 ⁺ - strongest reductant

(d) P700 - absorbs light

(e) P700* - strongest reductant

Which of the following is correct

TLS Online TPP Program

#Question id: 33486

#Unit 2. Cellular Organization

Only a few genes have uninterrupted coding sequences in case of mammals. How much % of genes in mammals are uninterrupted

TLS Online TPP Program

#Question id: 11110

#Unit 7. System Physiology – Animal

A very deep inspiration that ventilates all alveoli is:

TLS Online TPP Program

#Question id: 24511

#Unit 10. Ecological Principles

During a case, the parasitic worm Plagiorhynchus cylindraceus, that lives in the intestines of songbirds such as starling. They produce eggs that exit with the host feces, the feces are eaten by foraging pillbugs. The eggs hatch into a juvenile infective stage. Eventually, the infected pillbugs are eaten by birds and the life cycle continues. What will predict about these case given above?