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Biology
IB

Explain the difference between ventilation, gas exchange and cell respiration.

ventilation - achieved via breathing, the physical act of exchanging air between the lungs and the atmospheregas exchange - passive diffusion between alveoli and the bloodstream, resulting in the exchange...

Answered by Izabela S. Biology tutor
2334 Views

Explain how the properties of water are significant to living organisms.

Water is the medium of life. Its four key properties - thermal properties, ability to act as a universal solvent, cohesion and adhesion - help support the life processes and habitats of virtually all orga...

Answered by Biology tutor
94963 Views

Explain the course of Hershey-Chase experiment.

In the 50's scientists didn't agree about which molecule - proteins or DNA - carry the hereditary genetic information. This experiment was designed to answer this question. It was known that bacteriophage...

Answered by Anna P. Biology tutor
2080 Views

Explain antibiotic resistance in bacteria and its evolution.

Antibiotics are used as medicine to treat bacterial diseases. Bacterial diseases are the result of populations of bacteria, and bacteria within these populations are not all equally susceptible to antibio...

Answered by Biology tutor
2194 Views

Compare and contrast animal and plant cells, giving 3 similarities and 3 differences. Answer can be given as an annotated diagram.

Similarities:Have a cell membraneHave a nucleusHave mitochondriaDifferences:Plant cell has a cell wallPlant cell has one big vacuolePlant cells have chloroplasts - those in the leaves

Answered by Kipras U. Biology tutor
1262 Views

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