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Biology
GCSE

Explain a reflex arc

A reflex arc is the nerve pathway which follows a reflex action. First a stimulus, like a pin prick, is detected by receptors in the skin. A sensory neurone then sends electrical impulses to a relay neuro...

CS
Answered by Clara S. Biology tutor
10630 Views

State three ways in which a yeast cell differs from plant cells.

Yeast cells contain stored glycogen, whereas plant cells contain stored starch.
Plant cells reproduce through mitosis whereas yeast cells reproduce through binary fission
Plant cells contain chl...

CB
Answered by Coralie B. Biology tutor
8163 Views

Describe how water moves from roots to leaves (3 marks)

Via the process of transpiration:Water is evaporated from the leaves in the canopy. Due to capillary action, this causes more water to move up the plant through the xylem vessels to replace the water as i...

LN
Answered by Laura N. Biology tutor
4745 Views

Explain active transport

The movement of substances against a concentration gradient, requires energyUse diagram

KP
Answered by Kitty P. Biology tutor
2400 Views

what is the difference between aerobic respiration and aerobic respiration

Aerobic respiration= glucose + oxygen --> carbon dioxide, water and ATP energy (higher yield than anaerobic)* this process happens in the cytoplasm and mitochondrion* the stages of it includes glycolys...

TT
Answered by Thanika T. Biology tutor
2323 Views

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