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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 neurone,...
CS
Answered by Clara S. • Biology tutor
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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 chloroplasts, ye...
CB
Answered by Coralie B. • Biology tutor
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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 it i...
LN
Answered by Laura N. • Biology tutor
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Explain active transport

The movement of substances against a concentration gradient, requires energyUse diagram
KP
Answered by Kitty P. • Biology tutor
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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 glycolysis,...
TT
Answered by Thanika T. • Biology tutor
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