Level 2 Applied Science Unit 1 Biology Revision

The correct base pair for adenine is?

• Thymine

• Guanine

• Cytosine

• Citrine

If someone's genotype was termed homozygous recessive it would be? (A is just an example letter)

• Aa

• AA

• aa

• aA

When we are too hot, our arterioles ____________ which increases blood flow through them to encourage heat loss

The role of a xylem cell is?

• Carry glucose to all parts of the plant

• Transport water from the roots to the leaves of the plant

• Create oxygen through photosynthesis

• Open and close the flowers

The process of water moving through the plant from the roots to the leaves is called _____________?

The central nervous system (CNS) is made up of which two elements?

• Brain

• Nerves

• Spinal cord

• Muscle fibres

The role of glucagon is?

• To convert glucose to glycogen

• To stimulate the release of insulin

• To increase heart rate

• To convert glycogen back to glucose

For a nerve impulse to pass over a synapse, what has to be present in the gap?

• Muscle fibres

• A neurotransmitter (chemical)

• Nerve fibres

• Insulin

____________ neurones send impulses from the CNS to effectors such as glands or muscles

If an allele for a certain condition is recessive and someone has one recessive allele in their genotype (eg Aa) this means...

• They will only be a carrier for the condition

• They will have the condition

• They will not carry or have the condition