Practice Questions

TLS Online TPP Program

#Question id: 10911

Researchers have investigated bidirectional transport by applying two different radiotracers to two source leaves, one above the other. Researcher wanted to see how bidirectional transport happens in sieve elements. Which one of the following is INCORRECT interpretation for bidirectional transport?

#Unit 6. System Physiology – Plant

Transport in two directions has often been detected in sieve elements of different vascular bundles in stems
Transport in two directions has also been seen in adjacent sieve elements of the same bundle in petioles
simultaneous bidirectional transport in a single sieve element has also been demonstrated
Bidirectional transport in adjacent sieve elements can occur in the petiole of a leaf that is undergoing the transition from sink to source and simultaneously importing and exporting photosynthates through its petiole

More Questions

TLS Online TPP Program

#Question id: 33526

#Unit 2. Cellular Organization

The number of protein-coding genes is less than the number of potential polypeptides that can result in several polypeptides from the same gene because of mechanisms

A. alternative splicing

B. alternate promoter selection,

C. alternate poly(A) site selection

D. Number of Introns in the gene

TLS Online TPP Program

#Question id: 33527

#Unit 2. Cellular Organization

Match the following

TLS Online TPP Program

#Question id: 33528

#Unit 2. Cellular Organization

The Y chromosome has

TLS Online TPP Program

#Question id: 33529

#Unit 2. Cellular Organization

A. X and Y chromosomes have descended from a common, very ancient autosome pair.

B. X and Y chromosomes have descended from different autosome.

C. During evolution, the X chromosome has retained most of the original genes, whereas the Y chromosome has lost most of them.

D. During evolution, the X chromosome has lost most of them, whereas the Y chromosome has retained most of the original genes.

Which of the following is correct combination

TLS Online TPP Program

#Question id: 33530

#Unit 2. Cellular Organization

One approach to determine the number of essential genes

A. Mutational Analysis

B. Sequence Alignments

C. Complementation

D. Mass Spectroscopy

TLS Online TPP Program

#Question id: 33531

#Unit 2. Cellular Organization

The data obtained during DNA microarray analysis showing wildtype vs. mutant expression of genes under different conditions, represented as