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Describe how cell division by meiosis is different from cell division by mitosis.

Meiosis produces four cells through two cell divisions, whereas mitosis produces two cells through one cell division 2. Meiosis produces haploid cells, whereas mitosis produces diploid cells 3. Meiosis ha...

Answered by Eyad A. Biology tutor
6341 Views

Describe the role of haemoglobin in supplying oxygen to the tissues of the body?

Haemoglobin is an oxygen carrying molecule found in red blood cells. Haemoglobin is made up of four polpeptide chains (2 alpha, 2 beta), and consists of four haem groups (iron associated with heam) contai...

Answered by Olivia B. Biology tutor
13498 Views

Describe how a nerve impulses crosses a synapse in the nervous system.

A synapse is a junction or space between two neurons or a neuron and a receptor which allows the transmssions of an electrical or chemical signals to another cell. The first neuron is called the presynapt...

Answered by Harriet C. Biology tutor
21522 Views

7 Albinism is a genetic trait resulting from the inheritance of recessive alleles. (a) (i) Distinguish between the terms allele and gene. (ii) Explain the meaning of the term recessive allele.

a i) a gene is a section of DNA that codes for a protein and has a specific location on a chromosome while an ellel is just a different form of a gene

ii) a recessive allele is one that is expresse...

Answered by Elysa I. Biology tutor
4546 Views

Why do myelinated axons propagate action potentials faster than unmyelinated axons?

Unlike unmyelinated axons, myelinated axons are surrounded by an insulatory myelin sheath produced by Schwann cells. Because of this insulatory sheath, action potentials cannot occur along the entire leng...

Answered by Tutor63102 D. Biology tutor
31489 Views

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