Top answers

Describe the cardiac cycle

The cardiac cycle consists of two phases, diastole and systole. Diastole is when the heart is relaxing, allowing blood to flow into the chambers from the vena cava on the right side and the pulmonary vein on...
AG
Answered by Alex G. • Biology tutor
19576 Views

How does PCR work?

PCR stands for polymerase chain reaction. It is a technique used very commonly in molecular biology. It is a way of replicating one strand of DNA into many copies that can then be studied. The components nee...
AR
Answered by Alex R. • Biology tutor
6132 Views

What is the difference between aerobic and anaerobic respiration?

So respiration is the means by which all cells produce energy, and this is done through aerobic or anaerobic respiration of glucose. Let's concentrate on animal cells first. Anaerobic respiration occurs in t...
CP
Answered by Charlie P. • Biology tutor
2964 Views

Describe the structure and function of a chemical synapse.

A synapse acts as a junction between cells - either between neurons, or between a neuron and a muscle or gland cell. Although neurons transmit information via electrical signals, synapses transmit informatio...
BS
Answered by Beth S. • Biology tutor
26356 Views

What different forms of RNA are found in a cell and what are their functions?

Messenger RNA, or mRNA , is used to carry or contain the information that DNA contains. DNA is too large to be carried out of the nucleus, so mRNA is used to transport the necessary information to the riboso...
BS
Answered by Beth S. • Biology tutor
4069 Views