Levels of ATP and ADP are partly maintained in cells by

TLS Online TPP Program

#Question id: 11151

#Unit 9. Diversity of Life Forms

What conclusion can be drawn validly from these data?

TLS Online TPP Program

#Question id: 2089

#Unit 2. Cellular Organization

What type of single-pass membrane protein would contain a hydrophobic membrane spanning alpha-helix?

TLS Online TPP Program

#Question id: 3427

#Unit 11. Evolution and Behavior

Natural selection can alter the frequency of distribution allele and heritable trait in different following way

A- Accumulation of those mutation that increase fitness of population in changing environment

B- Check accumulation of mutation that lower the fitness of species in unchanging environment

c- occur when population is subjected to divergent selection

TLS Online TPP Program

#Question id: 16310

#Unit 7. System Physiology – Animal

The temperature of the body is regulated almost entirely by nervous feedback mechanisms, and almost all these mechanisms operate through temperature regulating centers located in the hypothalamus. Following statements are as follows:

A. The anterior hypothalamic-preoptic area contains large numbers of heat-sensitive neurons, as well as about one third as many cold-sensitive neurons. These neurons are believed to function as temperature sensors for controlling body temperature.

B. The heat-sensitive neurons increase their firing rate 2- to 10-fold in response to a 10°C increase in body temperature. 

C. The cold-sensitive neurons, by contrast, increase their firing rate when the body temperature increases.

D. Anterior hypothalamus integrates the central and peripheral temperature sensory signals.

Which of the following combination is correct?

TLS Online TPP Program

#Question id: 5329

#Unit 8. Inheritance Biology

A sex-linked recessive allele c produces a red-green colorblindness in humans. A normal woman whose father was colorblind marries a colorblind man. What are the chances that the second child from this marriage will be a colorblind boy?