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Describe the 3 overall stages of the cell cycle and the processes ongoing during the cell's life.

The cell cycle is composed of 3 main stages: 1) Interphase During the interphase stage of the cell cycle, the cell grows and organelles such as mitochondria and ribosomes double. The DNA also multiplies to f...
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Answered by Yousif A. • Biology tutor
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Why does blood flow to muscles increase during exercise?

Muscles require more energy during exercise. Additional oxygen and glucose are needed to release the energy. Blood flow increases to supply these to muscles faster. Respiration also increases to allow more o...
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Answered by Chloe W. • Biology tutor
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Biology A-level: describing the action potential

At rest K+ that is going out of cell clamps the membrane potential negative (e.g. -70 mV)An external factor (e.g. synaptic activity) causes the membrane to depolarise slightly. If the voltage reaches thresho...
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Answered by Abubakar M. • Biology tutor
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What is an autotroph?

An organism that produces its own food
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Answered by Will C. • Biology tutor
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What is a chloroplast?

A chloroplast is an organelle found in plant cells, otherwise known as the site of photosynthesis. It consists of a double membrane, thylakoids stacked into grana linked by lamellae, and a stroma which is si...
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Answered by Darcy W. • Biology tutor
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