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10B Biology > Year 9 revision > Flashcards

Year 9 revision Flashcards

(74 cards)

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1
Q

What is the basic unit of life?

A

The cell.

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2
Q

True or False: Prokaryotic cells have a nucleus.

A

False.

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3
Q

Fill in the blank: The process by which cells obtain energy from glucose is called __________.

A

cellular respiration.

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4
Q

What are the two main types of cells?

A

Prokaryotic and eukaryotic cells.

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5
Q

Which organelle is responsible for photosynthesis?

A

Chloroplast.

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6
Q

Multiple choice: Which of the following is NOT a function of the cell membrane? a) Protection b) Selective permeability c) Energy production d) Communication

A

c) Energy production.

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7
Q

What is the role of ribosomes in a cell?

A

Protein synthesis.

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8
Q

True or False: The mitochondria are known as the powerhouse of the cell.

A

True.

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9
Q

What is an enzyme?

A

A biological catalyst that speeds up chemical reactions.

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10
Q

What is the primary function of red blood cells?

A

To transport oxygen.

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11
Q

Fill in the blank: The __________ is the structure that controls the activities of the cell.

A

nucleus.

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12
Q

Multiple choice: Which type of tissue is responsible for movement in the body? a) Nervous b) Epithelial c) Muscle d) Connective

A

c) Muscle.

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13
Q

What is the function of white blood cells?

A

To fight infection.

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14
Q

True or False: Bacteria are eukaryotic organisms.

A

False.

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15
Q

What is the role of the cell wall in plant cells?

A

To provide structure and support.

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16
Q

Fill in the blank: The __________ system is responsible for defending the body against pathogens.

A

immune.

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17
Q

What is a pathogen?

A

An organism that causes disease.

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18
Q

Multiple choice: Which of the following is a viral infection? a) Influenza b) Tuberculosis c) Malaria d) Athlete’s foot

A

a) Influenza.

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19
Q

What is the purpose of vaccination?

A

To stimulate the immune response and provide immunity.

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20
Q

True or False: Antibiotics are effective against viruses.

A

False.

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21
Q

What is aerobic respiration?

A

Respiration that requires oxygen.

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22
Q

Fill in the blank: The end products of anaerobic respiration in yeast are __________ and carbon dioxide.

A

ethanol.

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23
Q

Multiple choice: What is the main source of energy for plants? a) Water b) Sunlight c) Soil d) Carbon dioxide

A

b) Sunlight.

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24
Q

What is the chemical equation for photosynthesis?

A

6CO2 + 6H2O -> C6H12O6 + 6O2.

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25
True or False: All organisms perform cellular respiration.
True.
26
What is ATP?
A molecule that stores and transfers energy in cells.
27
Fill in the blank: During exercise, the body may switch to __________ respiration when oxygen levels are low.
anaerobic.
28
What is the basic unit of life?
Cell
29
True or False: All living organisms are made up of cells.
True
30
What is the function of the cell membrane?
To control the movement of substances in and out of the cell.
31
Fill in the blank: The _____ is the control center of the cell.
nucleus
32
What structure in plant cells is responsible for photosynthesis?
Chloroplast
33
What is the function of mitochondria?
They produce energy through respiration.
34
What is the process by which cells divide called?
Mitosis
35
Which type of cell contains a cell wall?
Plant cell
36
What is the role of ribosomes in a cell?
To synthesize proteins.
37
Multiple choice: Which of the following is NOT a type of tissue? A) Epithelial B) Connective C) Chromosome D) Muscle
C) Chromosome
38
What is an organ?
A group of tissues that work together to perform a specific function.
39
What is the function of the digestive system?
To break down food and absorb nutrients.
40
True or False: The heart is an organ in the circulatory system.
True
41
Fill in the blank: The _____ system is responsible for defending the body against infection.
immune
42
What do pathogens cause?
Infections
43
What is the role of white blood cells?
To fight infections and protect the body.
44
What is the function of antibodies?
To neutralize or destroy pathogens.
45
Multiple choice: Which of the following is a viral infection? A) Tuberculosis B) Influenza C) Malaria D) Ringworm
B) Influenza
46
What is vaccination?
The introduction of a dead or weakened pathogen to stimulate immunity.
47
True or False: Antibiotics are effective against viruses.
False
48
What is bioenergetics?
The study of energy flow through living systems.
49
What is the primary source of energy for living organisms?
Sunlight
50
What is photosynthesis?
The process by which plants convert sunlight into chemical energy.
51
Fill in the blank: The equation for photosynthesis is _____ + carbon dioxide → glucose + oxygen.
water
52
What is cellular respiration?
The process of breaking down glucose to release energy.
53
Multiple choice: Which of the following is a product of cellular respiration? A) Oxygen B) ATP C) Glucose D) Carbon dioxide
B) ATP
54
What is anaerobic respiration?
Respiration that occurs without oxygen.
55
True or False: Lactic acid is produced during anaerobic respiration in humans.
True
56
What is the role of enzymes in biological processes?
To speed up chemical reactions.
57
Fill in the blank: Enzymes are _____ that act as biological catalysts.
proteins
58
What factors can affect enzyme activity?
Temperature, pH, and substrate concentration.
59
What is homeostasis?
The maintenance of a stable internal environment.
60
True or False: The liver plays a key role in regulating blood glucose levels.
True
61
What is the role of the pancreas?
To produce insulin and regulate blood sugar levels.
62
Fill in the blank: The _____ system controls body functions through hormones.
endocrine
63
What is the function of the respiratory system?
To exchange gases between the body and the environment.
64
Multiple choice: Which of the following is the primary organ of the respiratory system? A) Heart B) Lungs C) Liver D) Stomach
B) Lungs
65
What gas do plants take in during photosynthesis?
Carbon dioxide
66
What is the primary waste product of respiration?
Carbon dioxide
67
Fill in the blank: The process of breathing in is called _____ and breathing out is called _____ .
inhalation; exhalation
68
What is the purpose of the circulatory system?
To transport nutrients, gases, and waste products throughout the body.
69
True or False: Arteries carry blood away from the heart.
True
70
What is the function of veins?
To carry blood back to the heart.
71
Fill in the blank: The _____ is the largest organ in the human body.
skin
72
What is the role of the skeletal system?
To provide structure, support, and protection for the body.
73
True or False: The heart has four chambers.
True
74
What is the role of the kidneys?
To filter waste products from the blood.

10B Biology (3 decks)

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