Practice Questions

TLS Online TPP Program

#Question id: 27380

Choose the incorrect statements

#Unit 1. Molecules and their Interaction Relevant to Biology

Atomic radii is the distance between two nuclei (internuclear distance).
A covalent radius is one-half the distance between the nuclei of two identical atoms.
An ionic radius is one-half the distance between the nuclei of two ions in an ionic bond
Size of atom or atomic radii can not be estimated by effective nuclear charge

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TLS Online TPP Program

#Question id: 19460

#Unit 13. Methods in Biology

In phase contrast unobstructed light passes through a region of________ that both transmits only a small percentage of the light and changes its phase slightly.

TLS Online TPP Program

#Question id: 5717

#Unit 8. Inheritance Biology

Following homologous chromosome is a heterozygous for inversion

Following some statement regarding above abnormality is correct?

A. During meiosis, one chromosome twists once at the ends of the inversion to pair with the other untwisted chromosome

B. Crossing-over within the inversion loop at meiosis connects homologous centromeres in a dicentric bridge.

C. Tension eventually breaks the dicentric bridge, forming two chromosomes with terminal deletions.

D. the RF is zero among genes within the inversion region

TLS Online TPP Program

#Question id: 3496

#Unit 11. Evolution and Behavior

Which of following favor adaptations for polygynous mating in species?

a. Male competition

b. Female competition

c. Male choice

d. Female choice

TLS Online TPP Program

#Question id: 19866

#Unit 13. Methods in Biology

Which of the following variants of PCR has been devised to increase the specificity of PCR without lowering the efficiency by variation annealing temperature?

TLS Online TPP Program

#Question id: 389

#Unit 1. Molecules and their Interaction Relevant to Biology

A weak acid HA has a pKa of 5.0. If 1.0 mol of this acid and 0.1 mol of NaOH were dissolved in one liter of water, what would the final pH be?