Top answers

What is the difference between animal (eukaryotic) and bacteria (prokaryotic) cells?

The main difference between the following two is that bacterial cells do not possess a nucleus or any membrane-bound organelles. In addition to that, bacterial cell walls are made out of murein, plasmids are...
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Answered by Rytis B. • Biology tutor
4889 Views

What is homeostasis and why is it important? Give an example of a body condition that must be controlled and how.

In order to remember the definition of homeostasis it is useful to memorise the mnemonic ‘MACIE’; the Maintenance of A Constant Internal Environment. Conditions in the body must be constantly controlled beca...
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Answered by Tierney A. • Biology tutor
126091 Views

Describe the different environmental factors that affect the direction of root and shoot growth

There are three main factors that affect root and shoot growth, which are light (phototropism), gravity (geotropism) and water (hydrotropism).Both roots and shoots show positive tropism whereby growth is sho...
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Answered by Maria F. • Biology tutor
6283 Views

What is the difference between genotype and phenotype?

Everyone has two copies of each gene, one inherited from the mother and one from the father. The combination of both these copies is called the genotype. However the phenotype is what is visibly expressed. F...
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Answered by Sukhmani S. • Biology tutor
5471 Views

What is a pathogen?

-it is a disease-causing microorganism -it is known to be infectious -examples: bacteria, fungi, viruses
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Answered by Maria F. • Biology tutor
3783 Views