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What is the function of the kidneys and how do they carry this out?

Broadly speaking, the main function of the kidneys is to filter out waste from the body and excrete it out in the urine. Excretion is the removal of waste (i.e. products of metabolism/ toxic products like ur...
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Answered by Mannat R. • Biology tutor
3594 Views

Describe the role of two named enzymes in the process of semi-conservative replication of DNA

DNA helicase breaks the hydrogen bonds between DNA strands, separating the double-stranded DNA into single strands and exposing the nucleotide bases.DNA polymerase joins adjacent DNA nucleotides through form...
MC
Answered by Maddy C. • Biology tutor
13816 Views

How is an Action Potential transmitted across a synapse?

-An action potential arrives at the presynaptic membrane-Ca 2+ ion channels open-Ca 2+ ions diffues into presynaptic knob-Acetylcholine/ neurotransmitter in vesicles-Vesicles move towards presynaptic membran...
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Answered by Darcie W. • Biology tutor
3111 Views

How is the structure of DNA related to its function

The sugar-phosphate backbone is double stranded so protects the bases; DNA is a large molecule so can store lots of information; DNA is coiled so compact;Base sequence codes for amino acids; DNA is double st...
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Answered by Ishaq H. • Biology tutor
6069 Views

How does natural selection occur?

There are two important terms to understand (and state in an exam!) to answer this question. 1) Genetic diversity = the number of different alleles of genes in a population . Genetic diversity is a main fact...
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Answered by Tess W. • Biology tutor
5689 Views