OCR Gateway Biology B2

How is Blood transported to all parts of the body at the correct pressure?

What is Systolic and Diastolic blood pressure?

Name 2 things that can lower resting blood pressure

Explain how smoking causes high blood pressure

Explain how eating lots of saturated fat may increase blood pressure

State 3 health risks from high blood pressure

Why do you need :
a- Vitamins
b- Minerals
c- Fibre
d-Water

What are the health risks of being obese?

What is the BMI of someone who is 1.6m tall and weighs 60 kg?

List 5 ways to reduce risk of cancer

State the 4 types of Pathogen and what diseases each one causes

What are antibiotics?

Explain why antibiotics have to be used carefully?

How do Pathogens enter the body?

What are antibodies?

What are Antigens?

Name the barriers that the body has to stop pathogens entering it ( 5 )

What is Passive and Active Immunity?

Explain what Accommodation is

Explain the differences between Long sightedness & Short sightedness

Name the 2 parts of the nervous system

What are Receptor cells?

What are the 2 types of response the body has?

Explain the pathway of nerve impulses in reflex actions

What are some Short-term & Long-term effects of alcohol?

What is Negative Feedback?

What is Homeostasis?

What are Hormones?

Define:
1- Tropism
2- Positive Tropism
3- Negative Tropism
4- Phototropism
5- Geotropism

What is an Allele?

What are chromosomes?

What are Gametes?