Top answers

Explain how you may test a plant specimen for starch?

This can be done via the iodine test- you would use an iodine solution and pipette this unto the plant cutting. For a positive test, the specimen would turn into a blue/ black colour in the presence of iodine.
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Answered by Isabella M. • Biology tutor
3149 Views

Draw a punnet square between two carriers of cystic fibrosis and from this, work out the odds of their child being affected with CF.

I will draw the punnet square on the whiteboard. After drawing it, the ratio of CC:Cc:cc will be 1:2:1 As a recessive gene, only people with the homozygous recessive genotype (cc) will have cystic fibrosis s...
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Answered by Maddie B. • Biology tutor
4696 Views

Factorise 4x + 52

4(x+13)
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Answered by Nick S. • Maths tutor
3792 Views

Explain the collision theory.

In order to react, particles must collide with sufficient energy. Particles with a temperature above 0K are always moving and colliding with each other.
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Answered by Nick S. • Chemistry tutor
2680 Views

Prèsente ta famille

J'ai une mère et un père. Ma mère est un institutrice et mon père est un ingénieur. Aussi j'ai un frère quite est un pharmacien. Je m'entends bien avec ma famille.
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Answered by Nick S. • French tutor
2879 Views