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Biology
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Explain how the carbon is recycled into the growth of new leaves

Microorganism decompose the lead leaves from the old tress. They break up the leaves and release the nutrient and carbon into the environment. the new leaves photosynthesis and use the Carbon that was bro...

Answered by Glen C. Biology tutor
13288 Views

Describe how mRNA is produced in the nucleus of a cell.

The process in which mRNA is produced is called transcription.Firstly, DNA Helicase breaks Hydrogen bonds to unzip the DNA molecule and expose the base pairs. Then nucleotides enter through nuclear pores ...

Answered by Joana S. Biology tutor
2254 Views

Define the term gland and give two examples of endocrine glands in the human body.

Definition: an organ or tissue that synthesises and secretes a chemical messenger such as a hormone into the blood plasma.Examples: pituitary gland, thyroid gland (other relevant).

Answered by Biology tutor
2438 Views

What are the chambers of the heart, and describe the blood flow through the heart?

The right atrium, right ventricle, left atrium and left ventricle Deoxygenated blood enters the hearts right atrium via the superior and inferior vena cava, then is pumped to the right ventricle (through ...

Answered by Nicole A. Biology tutor
1812 Views

This question is on meiosis: Variation occurs during meiosis, give the two ways this happens (include the phases where it occurs) (4 marks)

During prophase 1, homologous chromosomes will pair up to form a bivalent, this is where crossing over can occur. Chromatids will twist around each other and will break and reform, resulting in crossing o...

Answered by Biology tutor
4101 Views

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