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John is n years old where n is an whole number. Kim is three years younger than John and Vanessa is half of Kim's age. Write an expression for Vanessa's age in terms of n.

Just to make things easier to write I will be using some letters to mean things.I will write:J = John's ageK = Kim's ageV = Vanessa's age.So John is n years old so John's age is n --> J = n. Kim is three ...
JM
Answered by Jack M. • Maths tutor
5327 Views

Draw a labelled diagram of carbon.

Student drawings will indicate a central nucleus with 6 neutrons and 6 protons, as well as 6 surrounding electrons in one shell.
JB
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What molecule in a plant cell is responsible for photosynthesis?

Chlorophyll.
JB
Answered by Josephine B. • Biology tutor
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how exactly should I answer this question comparing plant and animal cells?

Firsty, read the question carefully, making sure to underline any key points so that you understand exactly what the question is asking. Look at the marks awarded for the question, this should give you some ...
CE
Answered by Caleb E. • Biology tutor
3120 Views

What's the difference between the cell wall and cell membrane?

The cell membrane is a semi-permeable structure that surrounds a cell and it is present in plant, animal and bacteria cells. It is semi-permeable because some substances such as glucose and water can pass th...
AK
Answered by Arabella K. • Biology tutor
19616 Views