TLS Online TPP Program

#Question id: 374


The pH of a sample of blood is 7.4, while gastric juice is pH 1.4.  The blood sample has:

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. 0.189 times the [H+] as the gastric juice.

  2. 5.29 times lower [H+] than the gastric juice.

  3. 6,000 times lower [H+] than the gastric juice.

  4. a million times lower [H+] than the gastric juice.

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TLS Online TPP Program

#Question id: 5729

#Unit 8. Inheritance Biology

One chromosome in a plant has the sequence A B C D E F, and another has the sequence M N O P Q R. A reciprocal translocation between these chromosomes produced the following arrangement: A B C P Q R on one chromosome and M N O D E F on the other. If an individual is heterozygous for this translocation, the consequence in meiosis will be as follows:    

A. The two normal chromosomes and-two translocated chromosomes pair separately

B. Half of gametes produced from this meiosis are non-viable as they have deletions and duplications

C. In one of the cross configurations called "horizontal segregation" all gametes having normal or translocated chromosomes will not survive

D. The gametes having normal chromosomes only survive while all gametes having translocated chromosomes are non-viable, hence the translocations are used as crossover suppressors

Which of the following combinations best describes the meiotic consequences for the translocation described above?

TLS Online TPP Program

#Question id: 18224

#Unit 11. Evolution and Behavior

Proterozoic era characterized by___
a) Origin of life
b) Fossils of blue green algae
c) Most invertebrate evolved
d) First gymnosperm
e) Abundance of marine algae

TLS Online TPP Program

#Question id: 3896

#Unit 3. Fundamental Processes

Which one of the following is not involved in steroid hormone action?

TLS Online TPP Program

#Question id: 10359

#Unit 6. System Physiology – Plant

Nitrate reductases of higher plants are composed of two identical subunits, each containing three prosthetic groups. Which of the following is not the prosthetic group of nitrate reductase;

TLS Online TPP Program

#Question id: 6950

#Unit 5. Developmental Biology

In mammalian development, the embryo will form from which population of cells?