HSB

Question 1

Photosynthesis word equation

Answer 1

Carbon➕water➕light energy➕glu➕ox
➡️
Chlorophyll

Question 2

What is bioaccumulation

Answer 2

This is the build up of chemicals in living organisms

Question 3

Why do we need food

Answer 3

• Energy to do things
• Raw materials to grow larger
• Raw mater to repair damaged body parts

Question 4

Vitamins A-D what are they found in and what do they give you

Answer 4

Vitamin A- found in Liver,butter and it gives you healthy skin and teeth
Vitamin B- found in cheese, milk and it gives you healthy skin
Vitamin C- found in potatoes and citrus fruits and it gives you healthy teeth and gums(without it you get scurvy)

Question 5

What happens to the food in our bodies

Answer 5

It is digested(broken down)

Question 6

What is physical digestion

Answer 6

Physical digestion is the process of breaking down food into smaller pieces through mechanical actions like chewing

Question 7

What is chemical digestion

Answer 7

This is when enzymes and acids break down food into smaller molecules that can be me absorbed to the body

Question 8

What is enzymes

Answer 8

Enzymes are chemicals, which act to speed up chemical reactions.

Question 9

What are fats made up of

Answer 9

A molecule of glycerol phosphate

Question 10

How does respiration differ from breathing

Answer 10

Respiration is the overall process of obtaining energy from food using oxygen while breathing is the process of inhaling oxygen and exhaling carbon dioxide

Question 11

What are four factors which affect breathing rate and explain it

Answer 11

•Physical activity- when we exercise our muscles require more oxygen
•Emotions- strong emotions like stress or excitement, when we’re anxious our breathing rate may become rapid
•Altitude- the air has lower oxygen level so our bodies compensate by increasing
•Medical conditions- asthma or lung diseases can affect our breathing rate

Question 12

What is the difference between aerobic and anaerobic

Answer 12

Aerobic means with oxygen and anaerobic means without oxygen

Question 13

What happens from the time blood enters the pulmonary vein until it returned to the lungs via pulmonary artery

Answer 13

It carries oxygenated blood from the lungs to the heart through the pulmonary vein with oxygen, then to the body through the aorta. After the body uses the oxygen, it returns to the heart through the vena cava and goes back to the lungs through the pulmonary artery for more oxygen.

Question 14

Major bone of the skeleton system

Answer 14

Cranium- the bone that protects the soft tissue of the brain

Question 15

What is the clavicle

Answer 15

Also know man as the collar bone connects the sternum (breast bone) to the shoulder bone

Question 16

What is the scapula

Answer 16

(Shoulder blade) the sturdy, flat triangular bone that connects the clavicle to the humerus

Question 17

What is the vertebral column

Answer 17

(Spine) this is a combination of bones, muscles and other tissues that reach from base of the skull to the tailbone

Question 18

What is the humerus

Answer 18

This is the long bone in the upper arm that connects the shoulder to the elbow

Question 19

What is the ulna

Answer 19

(Elbow bone) two bones that make up the forearm

Question 20

What is the radius

Answer 20

One of the two bones in the forearm that extends from the elbow to the wrist

Question 21

What is the function of the kidney

Answer 21

To excrete metabolic waste, mainly urea from the body

To regulate the volume and concentration of the blood plasma and body fluids

Question 22

What is homeostasis

Answer 22

The maintaining of a constant internal environment

Question 23

What happens if the blood glucose level decreases

Answer 23

The glucagon passes into the blood and is carried to the liver

The normal level of glucagon is restored

Question 24

Heat loss to cool the body i.e. when temperature of the body rises above 37 °C

Answer 24

When you are too hot:
● More blood flows to the surface of the skin.
● More heat is lost from the blood through the skin by radiation.

Question 25

Heat gain to warm the body i.e.when body temperature falls below 37°C

Answer 25

When you are cold:
● Less blood flows to the surface of the skin and less heat is lost.
● Metabolic rate increases causing more heat to be produced.

Question 26

What does liver produce

Answer 26

Liver produces bile