Biology Answers

You would describe the cells from which insulin is secreted and state the overall role of insulin in the body. In signalling pathways, each signal molecule has a receptor that it binds to, so you would indicate what the receptor for insulin is called and what immediate outcome the binding of insulin has to that receptor i.e. in the case of insulin, which regulates glucose uptake in the body, does the receptor directly interact with glucose or is it just part of a much larger signalling cascade.

Explain what you consider to be the positive and negative aspects of cloning both scientifically and morally, giving at least three ‘for’ and three ‘against’ points – Discuss whether you think it is a good use of science and will benefit mankind or whether you believe it is unethical and should no longer be pursued? You can expand this discussion outside of therapeutic cloning if you wish and consider the idea that one day it may also be possible to clone whole human beings.

Explain why F(ab)2 and not Fab can form a precipitate with corresponding antigens

DNA: T A C T T A T C G A C C T C C C T A A A A A A C G T G T G C A T T

RNA: ?

 what is the difference naturally occurring antibiotics and chemically synthesized or semi-synthetic antibioti

. Why is it important that the bacteria thought to be causing an infection be isolated (separated from all other bacteria or cell types by streaking a clinical sample on petri dishes and selecting a single colony) from a clinical specimen prior to doing the antibiotic sensitivity testing?

Plants capture carbon dioxide and convert it to sugar. How is it possible for a plant to get more than once the same molecule of carbon dioxide?

Explain how plant cells and tissues are structurally organized to provide transport and support to plants

In which process electrons stored in the form of reduced coenzyme (NADH & FADH2) are passed through 

an elaborate and highly organized chain of proteins and coenzymes. Then, they finally reach the 

molecular oxygen (terminal acceptor of electrons) with the generation of energy (ATP

Discuss/summarize the hierarchy of the molecular organization of the cell according to increasing molecular complexity.