Random Biology Questions

Question 1

What is the independent variable

Answer 1

Is the thing you change

Question 2

What is the controlled variable

Answer 2

Is the thing you need to keep the same

Question 3

What is the dependent variable

Answer 3

Is the thing you measure

Question 4

What does the phloem transport

Answer 4

carries dissolved sugar from the leaves around the plant

Question 5

What does a xylem carry

Answer 5

carries dissolved minerals and water from the roots to the leaves

Question 6

What is Aerobic respiration?

Answer 6

• It is with oxygen
• takes place in the mitochondria
• purpose is to release energy (ATP)
• the equation is the reverse equation of photosynthesis.

Question 7

What is anaerobic respiration?

Answer 7

The rate of anaerobic respiration is affected by the range of factors e.g the temperature.
The equation:
In humans: glucose —>lactic acid + 2ATP
In yeast: Glucose —> ethanol + carbon dioxide + 2ATP

Question 8

Define food security

Answer 8

The production of food is consistent

Question 9

How do you find the percentage efficiency?

Answer 9

Percentage efficiency = energy output
————————. X100
Total energy input

Question 10

What is the treatment for salmonella

Answer 10

No treatment just drink lots of fluids

Question 11

What is the treatment for gonorrhoea

Answer 11

Treated with antibiotics

Question 12

What is rose black spots

Answer 12

Rose black spot is the most serious disease found in roses. It is caused by fungus which infects the leaves and greatly reduces plant vigour

Question 13

What are the symptoms of rose black spot?

Answer 13

• Black spots on top of leaf
• purple spots on top of leaf
• black, purple spots on stems of plants

Question 14

How is tobacco mosaic virus transmitted

Answer 14

It is transmitted by contact between plants either naturally or on the hands of farmers.

Question 15

What is HIV

Answer 15

It is a virus that damages the cells in your immune system

Question 16

What are the symptoms of HIV?

Answer 16

• fever
• chills
• rash
• night sweats
• muscle aches
• sore throat
• fatigue

Question 17

What is the definition of a pathogen?

Answer 17

A bacterium virus or other microorganism that can cause disease.

Question 18

what do platelets do?

Answer 18

they clot blood

Question 19

what two types of digestion does the Stomach do?

Answer 19

Physical digestion.

chemical digestion

Question 20

what is the bile duct

Answer 20

it is the tube leading from the liver to the duodenum via the gall bladder

Question 21

can the appendix be removed? if so why …

Answer 21

yes the appendix can be removed due to the fact that it has little function

Question 22

what does the large intestine do?

Answer 22

absorbs water into the bloodstream

Question 23

what does the cell membrane do?

Answer 23

controls the passage of substances such as glucose and mineral ions in the cell.

Question 24

what does the cell wall do?

Answer 24

gives support to the cell and strengthens it.

Question 25

what is a tissue

Answer 25

a tissue is a group of cells with a similar structure and function

Question 26

what is an organ

Answer 26

organs are collections of tissues performing specific functions

Question 27

where are the prokaryotic cells found?

Answer 27

in bacteria

Question 28

where are eukaryotic cells found?

Answer 28

they are found in all other organisms in the kingdom

Question 29

what is a communicable disease?

Answer 29

it is a disease caused by pathogens that can be passed from one organism to another

Question 30

what is a non communicable disease

Answer 30

they are not infectious and cannot be passed from one organism to another

Question 31

what are some examples of communicable nd non communicable disease

Answer 31

communicable: - flu - tuberculosis non communicable: - arthritis - heart disease - diabetes - asthma

Question 32

what are the 2 types of cancer

Answer 32

- benign | - malignant

Question 33

what does the mitochondria do

Answer 33

where aerobic respiration take place releasing energy for the cell.

Question 34

what is active transport?

Answer 34

Active transport is the movement of particles form a low concentration to a high concentration it requires energy

Question 35

what is osmosis?

Answer 35

osmosis the diffusion of water molecules from an area of high concentration of water to an area of low concertation of water across a partially permeable membrane

Question 36

what is diffusion?

Answer 36

Diffusion is the movement of a substance from an area of high concentration to an area of low concentration.