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Biology
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What is the structure of cellulose (polysaccharide)?

the simplest molecule present is beta glucose. These are bonded to each other via glycosidic bonds through a condensation reaction. Each molecule has been rotated 180 degrees compared to the previous one....

Answered by Dhiren C. Biology tutor
10804 Views

How does vaccination make a person immune to a disease?

An inactive or weak form of the pathogen is introduced to the patient. This stimulates the production of lymphocytes which then produce antibodies against the antigen. Memory cells are also generated. If ...

Answered by Yasmin Amneet D. Biology tutor
1985 Views

Describe how ATP is generated in the light-dependent reaction of photosynthesis.

Light energy excites electrons in chlorophyll to a higher energy level. The electrons pass down the electron transfer chain, reducing carriers as they go and releasing energy. The energy lost is used to g...

Answered by Biology tutor
5931 Views

Describe the nature of the genetic code

Genes are regions of DNA that code for proteins. They are transcribed into mRNA and translated into proteins at the ribosome. Genes are formed of nucleotides, or the bases that are found in DNA (Adenine, ...

Answered by Charlotte L. Biology tutor
6430 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.

The adult was exposed to the toxin when they were a child, this developed an immune response. This immune response stimulated B lymphocytes to proliferate, these then made memory B lymphocytes. The memory...

Answered by Charles B. Biology tutor
3072 Views

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