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Giving an overview of the two different processes, compare and contrast the processes of spermatogenesis and oogenesis.

In spermatogenesis, germline epithelium in the seminiferous tubules of the testes divides by mitosis and then a period of cell growth occurs, changing them from spermatogonia to primary spermatocytes. The...

Answered by Eashan P. • Biology tutor

4760 Views

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...

Answered by Mannat R. • Biology tutor

2767 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 f...

Answered by Maddy C. • Biology tutor

12421 Views

How is an Action Potential transmitted across a synapse?

-An action potential arrives at the presynaptic membrane-Ca²⁺ ion channels open-Ca²⁺ions diffues into presynaptic knob-Acetylcholine/ neurotransmitter in vesicles-Vesicles move towa...

Answered by Darcie W. • Biology tutor

2488 Views

Most cases of scarlet fever occur in children. Adults have usually developed immunity to a toxin that the Streptococcus bacteria produce during infection. Explain how an adult develops immunity to the toxin.

Previous exposure to the toxin confers immunity by eliciting an immune response whereby b-cells differentiate into plasma cells allowing the production of antibodies. These will in turn stimulate producti...

Answered by Georgia S. • Biology tutor

8443 Views