Top answers

Describe how plants living in dry conditions may be adapted to their environment.

Long/deep roots, stomata in pits, rolled leaves, tiny hairs on leaves, no leaves (cacti).
EP
Answered by Emily P. • Biology tutor
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What happens prior to and during mitosis?

Mitosis is the process in which a cell divides into two new cells. Cells contain DNA in the form of chromosomes as well as organelles such as ribosomes and mitochondria. Therefore if a cell is to divide into...
JD
Answered by James D. • Biology tutor
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Explain why a person who has cystic fibrosis may have more lung infections than a person who does not have cystic fibrosis

People with cystic fibrosis have a faulty gene which means they produce excess amounts of mucus. Lots of this mucus is produced in the airways and tends to build up in the lungs. The function of mucus is to ...
TD
Answered by Tochi D. • Biology tutor
3781 Views

Tobacco Mosaic Virus (TMV) causes plants to produce less chlorophyll leading to discolouration of the leaves. Explain why plants infected with TMV have stunted growth.

Less chlorophyll in the leaves means that less photosynthesis can occur. The process of photosynthesis produces glucose, so less photosynthesis will mean that there is less glucose produced. This leads to th...
JW
Answered by Jared W. • Biology tutor
6276 Views

The average lifespan of a human male can vary from 40 years to 85 years. The lifespan partly depends on the things available in the country where the man lives. Suggest three things that would increase the chance of a man having a longer lifespan.

The chances of a human male having a longer lifespan could be increased via a variety of factors and ways. Three examples of such ways are listed below. The availability of clean, drinkable water for daily u...
MV
Answered by Maria V. • Biology tutor
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