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What causes a heart attack (also known as mycocardial infarction) and how are they treated?

During an individuals life arteries become covered in fatty plaque deposits. This causes the the inside (lumen) of the arteries to narrow. This narrowing increases the likelyhood of blockage of platelets ...

Answered by Saskia C. Biology tutor
2501 Views

Describe the process of protein transport via vesicles in eukaryotes

Proteins are synthesised in the ribosomes from mRNA and tRNA nucleotides. Proteins enter the rough ER and are bound to vesicles here.  The vesicles detach from the rough ER and transport the proteins to t...

Answered by Devina S. Biology tutor
1722 Views

What is the difference between respiration and breathing?

Respiration is the biochemical breakdown of glucose in the cell to prouce energy in a usable form of ATP (the body's energy currency). Respiration can be in the presence of oxygen (aerobic) or without oxy...

Answered by Ollie W. Biology tutor
9581 Views

How are the alveoli adapted to allow efficient gas exchange within the lungs?

The efficiency of gas exchange across a surface is determined by Fick's Law. Fick's Law states that, for the diffusion of a gas to be efficient, three conditions should be met. Firstly, the surface area o...

Answered by Olivia P. Biology tutor
21817 Views

Chlorophyll b, chlorophyll a and carotene are all key pigments in the photorespiration process. a) Explain the role of pigments in the production of ATP [3], b) Explain the role of ATP in the cellular processes of plants [1], Why is it advantageous for pl

Q: Chlorophyll b, chlorophyll a and carotene are all key pigments in the photorespiration process. a) Explain the role of pigments in the production of ATP [3], b) Explain the role of ATP in the c...

Answered by Joseph M. Biology tutor
5005 Views

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