Assesment 1

Question 1

Dust is prevented from getting into the lungs by a layer of mucus, what sweeps this mucus away?

Answer 1

The cilia

Question 2

During gas exchange in the lungs, there is an overall diffusion of:

Answer 2

A carbon dioxide into the lung and oxygen into the blood.

Question 3

What is the equation for aerobic respiration?

Answer 3

Glucose + Oxygen —> water + carbon dioxide

Question 4

What is the equation for anaerobic respiration?

Answer 4

Glucose -> Lactic acid

Question 5

What are reactants for aerobic respiration?

Answer 5

glucose and oxygen

Question 6

Where do our cells get glucose from?

Answer 6

Carbohydrates

Question 7

The main difference between combustion and aerobic respiration is that:

Answer 7

combustion is much faster

Question 8

Respiration is useful because it releases?

Answer 8

Energy

Question 9

What cell in the blood carrys oxygen to the cells that need to respire?

Answer 9

Red blood cells

Question 10

When the Diaphragm contracts what happens in the lungs?

Answer 10

we inhale air as there is less pressure in the lungs as they expand

Question 11

how do plants get the gasses needed for aerobic respiration into their leaves?

Answer 11

through their stomata

Question 12

What turns from clear to milky when carbon dioxide is added to it?

Answer 12

limewater

Question 13

Where does aerobic respiration occur in animals?

Answer 13

All cells

Question 14

What acidic gas do animals produce in aerobic respiration?

Answer 14

carbon dioxide

Question 15

Why does your pulse rate increase with exercise?

Answer 15

your body needs blood to flow faster for oxygen transport

Question 16

What blood vessel carries oxygenated blood?

Answer 16

The artery

Question 17

Lactic acid is turned back into glucose, mainly in the:

Answer 17

muscles

Question 18

Digestion is where food is broken down by _______, from large molecules molecules to ________ soluble molecules.

Answer 18

Enzymes
Smaller

Question 19

In the mouth, ________ is added to make the food wet and easy to swallow. In the stomach
________ and ________ make the right pH for the enzymes to break the food down, so the molecules can pass into our blood from the ________.

Answer 19

salivary amylase
Hydrochloric acid
Water
small intestine

Question 20

___________ is absorbed in the large intestine to make the waste less wet. The undigested and unabsorbed food is passed out of the body from the _________.

Answer 20

Nutrients
Anus