Practice Questions

TLS Online TPP Program

#Question id: 1508

Of the following statements explaining how alterations of the ras gene cause cancer, which is true?

#Unit 4. Cell Communication and Cell Signaling

A base substitution in the c-ras gene that replaces a critical glycine with another amino acid.
Infection of the cell by a tumor virus carrying a v-ras gene.
Linkage of the c-ras gene to a viral promoter.
All of the above statements are true.

More Questions

TLS Online TPP Program

#Question id: 28037

#Unit 1. Molecules and their Interaction Relevant to Biology

Intrinsically disordered proteins have properties that are distinct from classical structured proteins, so which of the following's statements are true regarding Intrinsically disordered proteins

(1) Intrinsically disordered proteins lacks hydrophobic core

(2) Intrinsically disordered proteins have a hydrophobic core

(3) Intrinsically disordered proteins have high densities of charged amino acid residues such as Lys, Arg, and Glu

(4) Functional promiscuity is the characteristics of Intrinsically disordered proteins are.

TLS Online TPP Program

#Question id: 3283

#Unit 11. Evolution and Behavior

if the forward ( p in to q) and reverse ( q in to p) mutation rates for alleles at a locus are 1×10−1 and 1×10−2 per generation, respectively and the allelic frequencies are p = 0.20 and q = 0.80. if you assuming random matting population. Which of the following observation correct?

TLS Online TPP Program

#Question id: 3708

#Unit 3. Fundamental Processes

The incorporation of new nucleotides into a growing strand of DNA occurs during ________.

TLS Online TPP Program

#Question id: 33982

#Unit 2. Cellular Organization

A. Chromosomes occupy chromosome territories in the nucleus and very much entangled with each other.

B. Heterochromatic regions, silenced genes, and gene-sparse regions of chromosomes are typically localized to the nuclear periphery and center of nucleus.

C. Active genes are often found at the borders and of chromosome territories

D. Active genes from several chromosomes may cluster in inter-chromosomal territories that are enriched in transcription machinery

Choose true and false