Grade 5: Science - Living Cells

Question 1

Blood vessels

Answer 1

specialized structure to transport blood to every cell in the body

Question 2

Capillaries

Answer 2

smallest blood vessels

Question 3

Heart

Answer 3

four-chambered organ made of powerful muscles to pump blood

Question 4

Blood veins

Answer 4

blood vessels that carry blood back to the heart

Question 5

Circulatory System

Answer 5

The system of blood vessels and heart help circulate blood to every cell in the body; 3 parts are blood, blood vessel & heart

Question 6

Digestive System

Answer 6

The system where food changes into cell nutrients (or energy)

Question 7

Respiratory System

Answer 7

The system where breathing transport oxygen to the blood and carries carbon dioxide away from the blood; 2 parts are lungs & system of tubes that

connect the lungs with outside air

Question 8

Excretory System

Answer 8

The system where waste materials are removed from the blood and converted to urine, the urine collects in the bladder and is leaves the body through urination; kidney and bladder are part of the excretory system

Question 9

Explain how your body’s cells get the things they need to survive.

Answer 9

Blood transports resources to every cells in the body by being pumped through blood vessels to all the cells.
The blood carries food and gases to the cells and carries away the wastes

Question 10

Describe the steps in digestion.

Answer 10

1. Food is crushed by your teeth and moistened by saliva
2. Food is then swallowed and passes into the stomach through the esophagus
3. Digestive liquid and acid turn the food into a thick liquid which passes through the small intestine
4. The food breaks down into sugars and other nutrients
5. They then passes through the intestine walls into the blood for transport to the cells
6. The unused parts of the food pass into the large intestine and colon
7. Water is removed and waste is turned to solid and is eliminated through the anus

Question 11

Why is it important for blood to circulate through the lungs?

Answer 11

Breathing in will transports oxygen to the blood.
The red blood cells exchange gas oxygen to every cells in the body through the the capillaries
Then the blood carries the waste gas carbon dioxide away from the cells back to the lungs to be breathed out.r f ad.

Question 12

How are waste products in the blood removed from the body?

Answer 12

1. waste materials are removed from the blood and converted to urine, the urine collects in the bladder and is leaves the body through urination.
2. blood carries the waste gas carbon dioxide away from the cells back to the lungs to be exhaled

Question 13

Where does most digested food enter your blood?

Answer 13

most digested food passes through the intestine walls into the blood for transport to the cells

Question 14

Why is it important to filter waste materials from blood?

Answer 14

if the waste materials (dead cells, salt, nitrogen compounds) remained to build up, it would be unfit for the cells to continue living and the human body would become sick and not survive

Question 15

Why is blood pumped through blood vessels all over your body?

Answer 15

red blood cells transports gas oxygen to every cells in the body through the the capillaries

Question 16

What part of the circulatory system carries oxygen to cells?

Answer 16

the capillaries are where the gas oxygen are exchanged to every cells in the body

Question 17

What happens as blood passes through the capillaries in the small intestine?

Answer 17

sugars and other nutrients from digested food are passed through the capillaries in the small intestine walls into the blood.
the blood will then transport them to the cells

Question 18

Which side of the heart pumps oxygen-rich blood to the body?

Answer 18

the left side of the heart pumps oxygen-rich blood through out the body