The quantum yield of photosynthesis falls off drastically for far-red light of wavelengths greater than 680 nm, indicating that far-red light alone is inefficient in driving

photosynthesis, this effect is called

TLS Online TPP Program

#Question id: 30069

#Unit 7. System Physiology – Animal

The cardiac accelerator action of the catecholamines liberated by sympathetic stimulation is referred to as their:

TLS Online TPP Program

#Question id: 30070

#Unit 7. System Physiology – Animal

Effect of catecholamines on the strength of cardiac contraction is called their:

TLS Online TPP Program

#Question id: 30071

#Unit 7. System Physiology – Animal

According to graph, match the following:

TLS Online TPP Program

#Question id: 30072

#Unit 7. System Physiology – Animal

Which of the following combination correctly represents A, B, C, & D?

i. Diastasis

ii. Atrial systole

iii. Isovolumic contraction

iv. Isovolumic relaxation

TLS Online TPP Program

#Question id: 30073

#Unit 7. System Physiology – Animal

Following graph represents volume and pressure in ventricles. According to graph which of the following events correctly represents A & B  respectively?

TLS Online TPP Program

#Question id: 31305

#Unit 7. System Physiology – Animal

What is the membrane potential (threshold level) at which the S-A node discharges?