Cells

Question 1

What are cells?

Answer 1

The smallest living part of an organism, microscopic in size.

Question 2

What is an organism?

Answer 2

An individual animal, plant, or single-celled life form

Question 3

What defines a unicellular organism?

Answer 3

→ A living thing made up of only one cell

Question 4

Give three examples of unicellular organisms.

Answer 4

→ Some algae, some bacteria, amoebas

Question 5

What defines a multicellular organism?

Answer 5

A living thing made up of more than one cell where each cell works together

Question 6

Give three examples of multicellular organisms.

Answer 6

→ Animals, plants, some fungi

Question 7

What is a living thing?

Answer 7

→ Something that fulfills all 7 characteristics of life

Question 8

What is a non-living thing?

Answer 8

→ Something that was never alive and does not possess all 7 characteristics of life

Question 9

What is a dead thing?

Answer 9

→ Something no longer living but once possessed all 7 characteristics of life

Question 10

What does “Mrs Gren” stand for?

Answer 10

→ Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion, Nutrition

Question 10

Why is movement a characteristic of life?

Answer 10

→ Living organisms can move independently or show movement at a cellular level

Question 11

Why is respiration a characteristic of life?

Answer 11

→ It allows organisms to convert oxygen and glucose into energy

Question 12

Why is sensitivity a characteristic of life?

Answer 12

→ It enables organisms to respond to their environment

Question 13

Why is growth a characteristic of life?

Answer 13

All living things gorw over time.

Question 14

Why is reproduction a characteristic of life?

Answer 14

→ It allows organisms to produce offspring and continue their species

Question 15

Why is excretion a characteristic of life?

Answer 15

→ It helps organisms remove waste products

Question 16

Why is nutrition a characteristic of life?

Answer 16

→ Organisms require nutrients to survive and function

Question 17

What does the eyepiece of a microscope do?

Answer 17

→ Magnifies the specimen by 10x

Question 17

What is the function of the tube in a microscope?

Answer 17

→ Connects the eyepiece to the objective lenses

Question 18

How does the rough focusing knob help in microscopy?

Answer 18

→ Adjusts the distance between the specimen and objective lenses for focus

Question 19

What is the purpose of the fine focusing knob?

Answer 19

→ Sharpens the image for clearer viewing

Question 20

What does the revolving nosepiece do?

Answer 20

→ Holds the objective lenses and rotates to change magnification

Question 21

Name the three magnifications of objective lenses in a microscope.

Answer 21

→ 4x, 10x, 40x

Question 22

What is the role of stage clips?

Answer 22

→ Hold the slide in place

Question 23

What is the function of the stage on a microscope?

Answer 23

→ The platform where the specimen slide is placed

Question 23

What is the light source in a microscope used for?

Answer 23

→ Illuminates the specimen for better visibility

Question 24

What is a slide in microscopy?

Answer 24

→ A thin piece of glass where the specimen is placed

Question 25

What is an organelle?

Answer 25

→ A specialized part inside a cell that performs specific functions

Question 26

What does the nucleus do?

Answer 26

→ Stores genetic information (DNA)

Question 27

What is the role of the cell membrane?

Answer 27

→ Controls the transport of materials in and out of the cell

Question 28

What is the cytoplasm?

Answer 28

→ A jelly-like interior of the cell where chemical reactions occur

Question 28

What do ribosomes do?

Answer 28

→ Make proteins

Question 28

What is the mitochondria known as?

Answer 28

→ The energy factory of the cell

Question 29

What is the function of chloroplasts in plant cells?

Answer 29

→ Create energy through photosynthesis

Question 30

What does the vacuole do in a plant cell?

Answer 30

→ Stores water and nutrients permanently

Question 30

How does the vacuole in an animal cell compare to a plant cell?

Answer 30

→ Smaller and stores water temporarily

Question 31

What is the function of the cell wall?

Answer 31

→ Provides extra protection and structural support for plant cells

Question 32

Name the organelles present in both plant and animal cells.

Answer 32

→ Cytoplasm, nucleus, mitochondria, ribosomes, cell membrane

Question 32

Name the three organelles only found in plant cells.

Answer 32

→ Permanent vacuole, cell wall, chloroplast

Question 33

What is cellular respiration?

Answer 33

→ A process where mitochondria convert glucose into energy

Question 34

What is the word equation for cellular respiration?

Answer 34

→ Oxygen + Glucose → Energy + Water + Carbon Dioxide

Question 35

What role does mitochondria play in cellular respiration?

Answer 35

→ Produces energy by breaking down glucose

Question 36

Why do plant cells have chloroplasts but animal cells do not?

Answer 36

→ Chloroplasts enable plants to produce energy through photosynthesis

Question 37

How does the cell membrane help maintain homeostasis?

Answer 37

→ Controls the transport of substances in and out of the cell

Question 38

What is the purpose of cell division?

Answer 38

→ To create new cells for growth and repair

Question 39

What happens during DNA copying in mitosis?

Answer 39

→ The genetic information is doubled

Question 40

What occurs in the "Getting Ready" stage of mitosis?

Answer 40

→ The cell organizes itself before division

Question 41

What happens in the "Dividing" stage of mitosis?

Answer 41

→ The cell splits into two daughter cells

Question 42

Why is mitosis important for multicellular organisms?

Answer 42

→ It allows growth, repair, and reproduction of cells

Question 43

What is the correct order of levels of organization in an organism?

Answer 43

→ Cells → Tissue → Organs → Organ Systems → Organisms

Question 44

Why are tissues necessary in multicellular organisms?

Answer 44

→ They group similar cells together to perform specific functions efficiently

Question 45

How does an organ system differ from an organ?

Answer 45

→ An organ system is made up of multiple organs working together to perform complex functions

Question 46

What defines a specialised cell in a multicellular organism?

Answer 46

→ A cell with a unique structure adapted for a specific function

Question 47

Why do blood cells, muscle cells, and bone cells have different structures?

Answer 47

→ Each type is specialised to carry out a unique function essential for survival