Homework Practice

Printable assignment

Cell Explorer: Discovery, Types and Life Units

Section A: Core Practice

Question 1mcq

Which statement best explains cell discovery using microscopes?

A.Exercise, posture, nutrition and injury prevention help care for the musculoskeletal system.

B.Cells were discovered after microscopes made tiny structures visible.

C.Biomolecules such as proteins, lipids, carbohydrates and nucleic acids support cell structure and function.

D.Joints allow different types of movement, such as hinge and ball-and-socket movement.

Question 2mcq

A student is checking cell discovery using microscopes. Which statement is scientifically accurate Focus on: Robert Hooke observed cork cells and microscopy opened cell biology..?

A.Robert Hooke observed cork cells and microscopy opened cell biology.

B.Muscles, bones, cartilage and posture support fitness, yoga and healthy movement.

C.It is mainly about memorising labels without explaining their role.

D.Meristematic tissues divide actively; permanent tissues are specialised for functions.

Question 3mcq

Which answer shows correct understanding of plant and animal cell differences?

A.Striated muscles are usually voluntary, smooth muscles are involuntary and cardiac muscle works in the heart.

B.Xylem transports water and minerals, while phloem transports food.

C.Nervous tissue receives and transmits impulses for coordination.

D.Plant cells usually have a cell wall, chloroplasts and a large vacuole; animal cells do not.

Question 4mcq

Which statement should a Grade 9 student remember about plant and animal cell differences?

A.Cell biology connects with health because diseases can affect organelles, membranes, DNA or cell division.

B.Tables, diagrams and graphs help represent tissue experiment observations clearly.

C.Plant and animal cells share basic parts but differ in visible structures and functions.

D.Mitosis supports growth and repair; meiosis supports gamete formation and variation.

Question 5mcq

Which statement best explains prokaryotic and eukaryotic cells?

A.Tissues allow division of labour in multicellular organisms.

B.Prokaryotic cells lack a well-defined nucleus, while eukaryotic cells have one.

C.It can be understood without looking at structure, function, or evidence.

D.Endoplasmic reticulum helps transport materials, while vacuoles store substances.

Question 6mcq

A student is checking prokaryotic and eukaryotic cells. Which statement is scientifically accurate Focus on: A nucleus and membrane-bound organelles help identify eukaryotic cells..?

A.A nucleus and membrane-bound organelles help identify eukaryotic cells.

B.Cells are functional units because life processes occur inside cells.

C.The plasma membrane controls exchange; the cell wall gives support and protection.

D.A good cell model represents organelles and connects each structure with its function.

Section B: Application Check

Question 7mcq

Which answer shows correct understanding of cells as structural units of life Focus on: Cells are the basic structural units because organisms are built from cells (while explaining why organisms are made of cells)?

A.Diffusion moves particles down a concentration gradient; osmosis is water movement through a semi-permeable membrane.

B.The plasma membrane controls exchange; the cell wall gives support and protection.

C.Apical meristem increases length, lateral meristem increases girth and intercalary meristem helps regrowth in grasses.

D.Cells are the basic structural units because organisms are built from cells.

Question 8mcq

Which statement should a Grade 9 student remember about cells as structural units of life?

A.Apical meristem increases length, lateral meristem increases girth and intercalary meristem helps regrowth in grasses.

B.Diffusion moves particles down a concentration gradient; osmosis is water movement through a semi-permeable membrane.

C.Tissues and organs are formed from organised groups of cells.

D.Muscles, bones, cartilage and posture support fitness, yoga and healthy movement.

Question 9mcq

Which statement best explains cells as functional units of life?

A.Xylem transports water and minerals, while phloem transports food.

B.Cells are functional units because life processes occur inside cells.

C.Tables, diagrams and graphs help represent tissue experiment observations clearly.

D.Biological organisation moves from cells to tissues, organs and organ systems.

Question 10mcq

A student is checking cells as functional units of life. Which statement is scientifically accurate Focus on: Cellular activities support growth, repair, energy release and survival..?

A.Cellular activities support growth, repair, energy release and survival.

B.It is only a naming fact and does not affect how organisms work.

C.Exercise, posture, nutrition and injury prevention help care for the musculoskeletal system.

D.Plant cells usually have a cell wall, chloroplasts and a large vacuole; animal cells do not.

Question 11mcq

Which statement should a Grade 9 student remember about cell discovery using microscopes Focus on: Cells were discovered after microscopes made tiny structures visible (while comparing cells under a microscope)?

A.Plant cells usually have a cell wall, chloroplasts and a large vacuole; animal cells do not.

B.Diffusion moves particles down a concentration gradient; osmosis is water movement through a semi-permeable membrane.

C.Endoplasmic reticulum helps transport materials, while vacuoles store substances.

D.Cells were discovered after microscopes made tiny structures visible.

Question 12mcq

Which statement best explains plant and animal cell differences Focus on: Plant cells usually have a cell wall, chloroplasts and a large vacuole; animal c (while comparing cells under a microscope)?

A.Joints allow different types of movement, such as hinge and ball-and-socket movement.

B.It can be understood without looking at structure, function, or evidence.

C.Plant cells usually have a cell wall, chloroplasts and a large vacuole; animal cells do not.

D.Biological organisation moves from cells to tissues, organs and organ systems.