Cells

Multiple Choice

What was the conclusion drawn from Redi's experiment in 1668?

• A) Maggots spontaneously appeared

• B) Flies laid eggs in meat

• C) Microorganisms appeared

• D) Nothing grew

Multiple Choice

In Needham's experiment in 1745, what was observed in the unsealed flask?

• Nothing grew

• Maggots appeared

• Microorganisms appeared

• Flies laid eggs

Multiple Choice

Spallanzani repeated Needham's experiment but with sealed flasks. What was the result?

• A) Microorganisms appeared

• B) Nothing grew

• C) Maggots appeared

• D) Flies laid eggs.

Multiple Choice

In Pasteur's experiment, what was the purpose of using an S-shape neck flask?

• To allow air and microorganisms

• To allow air but not microorganisms

• To allow microorganisms but not air

• To prevent both air and microorganisms

Multiple Choice

The belief that a 'life force' caused nonliving things to 'birth' living things is known as ______.

• Evolution

• Spontaneous generation

• Natural selection

• Germ theory

Multiple Choice

Which of the following statements is part of the cell theory?

• A) All living things are made up of cells.

• B) Cells can be created from non-living matter.

• C) The cell is the largest unit of life.

• D) Cells do not come from pre-existing cells.

Multiple Choice

What type of system is a cell?

• Open

• Closed

• Isolated

Multiple Choice

Fill in the blank: The cell is the _______ unit of life.

• largest

• smallest

• medium-sized

Multiple Choice

Which organ system is responsible for gas exchange in humans?

• A) Digestive

• B) Musculoskeletal

• C) Respiratory, circulatory

• D) Nervous

Multiple Choice

Fill in the blank: Cells have tiny organs called _______ to perform functions on a smaller scale.

• tissues

• organelles

• systems

Multiple Choice

Which organelle acts as the protective barrier of the cell and controls what comes in and goes out?

• Nucleus

• Cell membrane

• Mitochondria

• Golgi apparatus

Multiple Choice

The _______ is responsible for making proteins out of amino acids.

• Ribosomes

• Lysosomes

• Nucleus

• Centrioles

Multiple Choice

What is the function of the mitochondria in an animal cell?

• Contains the cell’s DNA

• Makes proteins

• Cellular respiration

• Involved in cell division.

Multiple Choice

The gel-like substance that suspends all the organelles and has nutrients is called _______.

• Cytoplasm

• Nucleus

• Lysosomes

• Smooth endoplasmic reticulum

Multiple Choice

Which organelle is involved in cell division?

• Golgi apparatus

• Centrioles

• Rough endoplasmic reticulum

• Mitochondria

Multiple Choice

Which organelle is present in animal cells but not in plant cells?

• Chloroplast

• Centrioles

• Cell wall

• Large central vacuole

Multiple Choice

Fill in the blank: The _______ is responsible for photosynthesis in plant cells.

• Mitochondria

• Chloroplast

• Nucleus

• Ribosomes

Multiple Choice

What is the function of the large central vacuole in plant cells?

• Stores water and nutrients

• Provides energy

• Synthesises proteins

• Contains genetic material

Multiple Choice

Which structure provides strength and support to plant cells?

• Cell membrane

• Nucleus

• Cell wall

• Lysosomes

Multiple Choice

Fill in the blank: In plant cells, energy is stored as _______.

• Fat

• Oil/Starch

• Protein

• Sugar

Multiple Choice

Which organelle is responsible for protein synthesis?

• Nucleus

• Ribosome

• Mitochondria

• Lysosome

Multiple Choice

The _______ is the site of cellular respiration.

• Nucleus

• Mitochondria

• Chloroplast

• Golgi apparatus

Multiple Choice

What is the function of the cell membrane?

• Stores water and nutrients

• Controls what comes in/out

• Site of photosynthesis

• Digestion and defence.

Multiple Choice

Which organelle contains chlorophyll and is the site of photosynthesis?

• Mitochondria

• Chloroplast

• Nucleus

• Lysosome

Multiple Choice

The _______ packages materials from the ER for transport.

• Golgi apparatus

• Ribosome

• Lysosome

• Vacuole

Multiple Choice

What is the model for the structure of the cell membrane called?

• Solid mosaic model

• Fluid mosaic model

• Rigid mosaic model

• Flexible mosaic model

Multiple Choice

The cell membrane separates the inside of the cell (intracellular fluid/ICF) with its outside environment (______).

• Extracellular fluid/ECF

• Intercellular fluid/ICF

• External fluid/EF

• Internal fluid/IF

Multiple Choice

Which of the following is true about the phospholipid bilayer?

• It has three layers of phospholipids

• It is hydrophobic

• It has two layers of phospholipids

• It is rigid.

Multiple Choice

Channel proteins in the cell membrane function as:

• Tunnels to let big molecules pass through

• Barriers to block molecules

• Pumps to push molecules out

• Filters to clean molecules

Multiple Choice

Lipids in the cell membrane have hydrophilic heads that are:

• Away from the ECF/ICF

• Next to the ECF/ICF

• Inside the phospholipid bilayer

• Outside the cell

Multiple Choice

Which statement is true about matter?

• All matter is made up of particles.

• Only solids are made up of particles.

• Liquids are not made up of particles.

• Gases are not made up of particles.

Multiple Choice

Particles are always moving. In which state of matter do they move the fastest?

• A) Solids

• B) Liquids

• C) Gases

• D) Plasma

Multiple Choice

Particles are attracted to each other. True or False?

• True

• False

Multiple Choice

Particles have spaces between them. In which state of matter is this space the most?

• Solids

• Liquids

• Gases

• Plasma

Multiple Choice

Fill in the blank: Particles have spaces between them, with the most space in ______.

• A) Solids

• B) Liquids

• C) Gases

• D) Plasma

Multiple Choice

What is the ratio of solute to solvent in a solution called?

• Concentration

• Solubility

• Diffusion

• Permeability

Multiple Choice

Which of the following is an example of a solute?

• Water

• Kool-Aid crystals

• Air

• Oil

Multiple Choice

A concentration gradient exists when there’s a different concentration on either side of a ____.

• membrane

• solution

• solvent

• solute

Multiple Choice

Which type of membrane allows nothing through?

• A) Permeable

• B) Semi-permeable

• C) Impermeable

• D) Selectively permeable

Multiple Choice

Solutes naturally want to balance out by moving from ____ to ____ concentration.

• low to high

• high to low

• equal to unequal

• none to some

Multiple Choice

Which type of transport does NOT require energy?

• Active Transport

• Passive Transport

• Both A and B

• Neither A nor B

Multiple Choice

In passive transport, molecules move from _______ concentration to _______ concentration.

• A) Low to High

• B) High to Low

• C) Equal to Equal

• D) Low to Low

Multiple Choice

What factor does NOT affect the rate of diffusion?

• Size of particles

• Concentration difference

• Colour of particles

• Temperature

Multiple Choice

Active transport requires energy to move molecules _______ the concentration gradient.

• A) Along

• B) Against

• C) Across

• D) With

Multiple Choice

Which of the following is an analogy for diffusion?

• Climbing uphill

• Floating downstream

• Running a marathon

• Building a wall.

Multiple Choice

What does 'facilitate' mean in the context of passive transport?

• A) To hinder

• B) To help

• C) To stop

• D) To slow down

Multiple Choice

Which type of protein is shaped like tubes or tunnels and allows solute to go straight through?

• Carrier protein

• Channel protein

• Enzyme

• Receptor protein

Multiple Choice

Facilitated diffusion happens with molecules that are ______ to fit through the membrane.

• too small

• too big

• just right

• too fast

Multiple Choice

What is the analogy used for facilitated diffusion?

• Like climbing uphill

• Like floating downstream, on a raft

• Like running a marathon

• Like swimming upstream

Multiple Choice

Carrier proteins are designed to fit around ______.

• any molecule

• one specific molecule

• multiple molecules

• no molecule

Multiple Choice

What is osmosis?

• Movement of solutes

• Movement of water

• Movement of air

• Movement of light

Multiple Choice

In osmosis, water moves from an area of ______ water concentration to an area of ______ water concentration.

• higher, lower

• lower, higher

• equal, equal

• higher, higher

Multiple Choice

What happens to a cell in a solution with 10% salt and 90% water?

• It shrivels

• It swells

• It remains unchanged

• It bursts

Multiple Choice

What is the role of a semi-permeable membrane in osmosis?

• Allows all molecules to pass

• Blocks all molecules

• Allows only water to pass

• Allows only solutes to pass

Multiple Choice

In the practice scenario, what will happen to a cell in a solution with 30% salt and 70% water?

• It will swell

• It will shrivel

• It will burst

• It will remain unchanged.

Multiple Choice

What does the prefix 'hyper' mean in the context of tonicity?

• Low

• Equal

• High

• None of the above

Multiple Choice

In a hypertonic solution, the concentration of solutes is ______ than that of the cell.

• Lower

• Higher

• Equal

• None of the above

Multiple Choice

What is the effect on animal cells in a hypertonic solution?

• Appear normal

• Appear swollen, may burst

• Appear shriveled, may die

• Appear turgid.

Multiple Choice

In an isotonic solution, the concentration of the cell and the solution are ______.

• Higher

• Lower

• Equal

• None of the above

Multiple Choice

What happens to plant cells in a hypotonic solution?

• Appear wilted and limp

• Appear slightly limp due to lack of turgor pressure

• Appear turgid, plant appears healthy

• Appear shriveled, may die.

Multiple Choice

What is used to pump molecules from low to high concentrations in active transport?

• Carbohydrates

• Proteins

• Lipids

• Nucleic acids

Multiple Choice

In active transport, molecules move from _______ concentration to _______ concentration.

• low, high

• high, low

• equal, equal

• none of the above

Multiple Choice

What is needed to pump molecules against the concentration gradient in active transport?

• Water

• Oxygen

• Energy (ATP)

• Carbon dioxide

Multiple Choice

Exocytosis moves things _______ of the cell.

• into

• out

• around

• through

Multiple Choice

Endocytosis involves the formation of a vesicle around the solute to move things _______ the cell.

• into

• out of

• around

• through

Multiple Choice

What is the definition of concentration?

• Ratio of solute to solvent in a solution

• Difference in concentration on either side of a membrane

• Movement of molecules from high to low concentration

• Use of energy to move molecules.

Multiple Choice

Which type of transport requires ATP (energy)?

• Diffusion

• Facilitated Diffusion

• Osmosis

• Active Transport

Multiple Choice

Fill in the blank: In a hypertonic solution, the cell will ____.

• A) Swell

• B) Shrivel

• C) Stay the same

• D) Burst

Multiple Choice

What is one advantage of using a liposome in medication delivery?

• It is made of different material than the cell membrane

• It can merge with the cell membrane and release medicine quickly

• It prevents the medicine from entering the cell

• It requires energy to release medicine.

Multiple Choice

Which of the following is NOT a point of the particle model of matter?

• A) All matter is made up of particles

• B) Particles are always moving

• C) Particles are not attracted to each other

• D) Particles have spaces between them.

Multiple Choice

What is the formula for calculating the surface area of a cube?

• 2(lw + hw + lh)

• 6(length x width)

• length x width x height

• 4πr²

Multiple Choice

Which of the following is an advantage of small cells?

• Requires more nutrients

• Produces more waste

• Requires less nutrients

• More area for pulling in nutrients.

Multiple Choice

Fill in the blank: The volume of a cube can be calculated using the formula ______.

• length x width x height

• 6(length x width)

• 2(lw + hw + lh)

• 4πr²

Multiple Choice

What is the surface area to volume ratio (SA:V) for Cell 1?

• 4:1

• 2.4:1

• 3:1

• 5:1

Multiple Choice

Which cell is better suited for survival based on the SA:V ratio?

• Cell 1

• Cell 2

Multiple Choice

What is the function of the nucleus in a cell?

• Contains DNA, controls cell

• Site of cellular respiration

• Protein synthesis

• Fat/oil synthesis

Multiple Choice

Which organelle is responsible for protein synthesis?

• Golgi apparatus

• Rough ER

• Smooth ER

• Chloroplast

Multiple Choice

Fill in the blank: The _______ is the site of photosynthesis in plant cells.

• Mitochondria

• Chloroplast

• Nucleus

• Ribosomes

Multiple Choice

In the Venn diagram comparing plant and animal cells, which feature is unique to plant cells?

• A) Centrioles

• B) Many small vacuoles

• C) Cell wall & chloroplasts

• D) Store energy as fat.

Multiple Choice

Which cell is best suited for survival based on the SA:V ratio?

• Cell 1

• Cell 2

• Cell 3

Multiple Choice

Which type of transport moves molecules across a membrane without using energy?

• Simple Diffusion

• Facilitated Diffusion

• Osmosis

• Active Transport

Multiple Choice

In the context of cell transport, which process requires energy?

• Simple Diffusion

• Facilitated Diffusion

• Osmosis

• Active Transport

Multiple Choice

The pale red Kool-Aid is the more dilute glass because it has a lower concentration. What is the solute in this scenario?

• Water

• Kool-Aid crystals

• Sugar

• Salt

Multiple Choice

A phospholipid bilayer is called so because it is made up of two layers of ______.

• Proteins

• Carbohydrates

• Phospholipids

• Nucleic acids

Multiple Choice

Which type of transport involves the movement of water across a membrane?

• Simple Diffusion

• Facilitated Diffusion

• Osmosis

• Active Transport