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Biology
IB

Describe the basic principles of cell theory giving examples to support them

The cell is the smallest unit of life. Organelles cannot survive by themselves.Challenge to the theory: green algae - highly complex mono-nucleated cell that is up to 10cm. All cells come from pre-existin...

Answered by Konstantinos V. • Biology tutor
1500 Views

Explain the sliding filament model of skeletal muscle contraction

An action potential on a motor axon reaches the axon terminal, causing acetylcholine to be released. It diffuses across the neuromuscular cleft in synaptic vesicl...

Answered by Maddie P. • Biology tutor
1503 Views

What are the main differences between Type 1 and Type 2 Diabetes?

Type 1 diabetes presents younger than type 2, and results from an autoimmune reaction of the pancreas. This means patients have no insulin available to store glucose as glycogen. Type 2 diabetes presenets...

Answered by Rahul K. • Biology tutor
1297 Views

What is the difference between chromatin and a chromosome?

The difference between chromatin and chromosome can be highlighted when using the analogy of a wool. Chromatin is the unwound wool pile of wool where as chromosomes are the tightly wound and condensed woo...

Answered by Francesca B. • Biology tutor
4504 Views

Describe and explain the electron transport chain and oxidative phosphorylation

For this kind of question, facts such as how this is the last step of aerobic respiration, which happens in the mitochondrial membrane - most specifically the cristae (inner folds of the mitochondria) - s...

Answered by Alejandro E. • Biology tutor
2278 Views

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