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Explain why when placed in distilled water a red blood cell would burst but a plant epidermis cell would not

The cytoplasm of both cells has a higher osmolarity/ lower water potential than the distilled water, this causes water to enter the cells via osmosis along the water gradient. The red blood cell is surrounde...
KW
Answered by Kelvin W. • Biology tutor
26699 Views

What is the mechanism of inspiration in human?

Inspiration and expiration are the terms used to describe breathing in and out. The way in which we breathe depends entirely upon a pressure gradient that determines the direction of air movement in or out o...
PN
Answered by Pam N. • Biology tutor
8650 Views

How are proteins made?

In the nucleus, DNA helicase breaks hydrogen bonds between the bases on DNA causing the DNA strand to unwind.The template strand acts as a template for mRNA production during which complimentary nucleotides ...
AM
Answered by Adiba M. • Biology tutor
3322 Views

Describe the similarities and differences in structure between DNA and RNA

Both DNA and RNA are molecules related to protein coding in a cell. The basic structure has a carbon sugar backbone with 4 different nitrogenous bases. In DNA there are two of these strands connected by the ...
EL
Answered by Emily L. • Biology tutor
3721 Views

Describe how phagocytosis of a virus leads to presentation of its antigen

The phagosome containing the virus fuses with the lysosome, which then releases hydrolytic enzymes. These enzymes then destroy the virus, and the antigens from the virus are consequently incorporated into th...
SF
Answered by Sam F. • Biology tutor
5390 Views