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Temperature affects cell membrane permeability. At high temperatures, proteins that support and maintain cell membranes may be denatured, increasing membrane permeability.How may membrane permeability change at low temperatures?

It is important that a cell membrane is intact as it protects cell contents from the external environment, and controls what can enter and exit the cell. At temperatures below normal, cell membrane permeabil...
RL
Answered by Raisa L. • Biology tutor
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What happens to the pressure inside a sealed canister of gaseous oxygen when it is transferred from a cool environment to a warmer environment?

The pressure increases when it is moved from a cool environment to a warmer environment. This is because the molecules of oxygen have more kinetic energy in a warmer environment and therefore move faster. Th...
AC
Answered by Adam C. • Physics tutor
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During exercise changes happen at the skin involving blood vessels and sweat glands, describe these changes.

During exercise body temperatures increase, as this can be damaging to biological processes (enzymes may be denatured) the body tries to maintain a constant body temperature in a process called homeostasis. ...
AC
Answered by Adam C. • Biology tutor
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What is the relative molecular mass of ammonia?

Ammonia is NH 3 . Nitrogen has a relative atomic mass of 14. Hydrogen has a relative atomic mass of 1. 14 + (3 x 1) = 17 Ammonia has a relative molecular mass of 17.
AC
Answered by Adam C. • Chemistry tutor
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Shape S is one quarter of a solid sphere. The volume of S is 576(pi)cm(^3). Find the surface area of S correct to 3 significant figures

Radius is the only property of a sphere that is used to define surface areas and volumes. We need to find what the radius is from the information that the question has given us. S is a quarter sphere, and we...
JW
Answered by Joe W. • Maths tutor
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