Emma and Aiden are exploring the amazing world of cells in their science class! They discover that the plasma membrane is like a protective shield made of proteins, carbohydrates, and lipids. The phospholipid bilayer is the gatekeeper, deciding what gets in and out of the cell. Which TWO characteristics of phospholipids' orientation help this "cell shield" do its job so well?

A. The inward-facing orientation of non-polar tails allows the bilayer to act as a barrier for charged and polar molecules entering and exiting the cell.

D. The outward-facing orientation of hydrophilic heads allows interactions between the cell and the aqueous environment.

B. The inward-facing orientation of polar tails allows the bilayer to act as a barrier for charged and non-polar molecules entering and exiting the cell.

C. The outward-facing orientation of hydrophobic heads allows interactions between the cell and the aqueous environment.

Noah, Michael, and Abigail are exploring the mysteries of cellular transport in their science lab. They come across the process shown in the diagram. Which description best identifies this type of cellular transport?

Osmosis, because energy is not being used to move molecules with the concentration gradient

Active transport, because energy is being used to move molecules against the concentration gradient

Facilitated diffusion, because energy is being used to move molecules with the concentration gradient

Endocytosis, because energy is not being used to move molecules against the concentration gradient

Jackson and Maya are looking at a diagram of a red blood cell in a beaker filled with a solution that has a higher salt concentration than inside the cell. They wonder what will happen to the red blood cell in this salty environment. Can you help them figure it out?

The red blood cell will shrink from losing water molecules.

The size of the red blood cell will remain constant.

The red blood cell will swell at first and then shrink.

The red blood cell will swell from absorbing salt molecules.

Charlotte and Grace are curious scientists! They decide to place cells of Elodea, a freshwater plant, on a wet-mount microscope slide for a fun experiment. Instead of using freshwater, they add a saltwater solution to the slide. When they peek through the microscope, what are Charlotte and Grace MOST LIKELY to observe happening to the Elodea cells?

The cells will shrink within the cell walls.

The cells will swell, expanding the cell walls.

The cell walls will dissolve, releasing the cell.

The cells will not be affected and will remain unchanged.

Maya and Samuel are conducting a science experiment with plant cells in a salty solution. Which BEST supports the choice from Part A?

The cells will lose water to the surrounding solution because the solution's solute concentration is higher than the cell's solute concentration.

The cells will attempt to maintain homeostasis by remaining unchanged and unaffected by their surroundings.

The cells will attempt to maintain homeostasis by dissolving their cell walls to quicken the process of osmosis.

The cells will gain water from the surrounding solution because the solution's solute concentration is higher than the cell's solute concentration.

Level 3 Abigail, Daniel, and Benjamin are learning about red blood cells! Human red blood cells contain 0.9% sodium chloride as a component of their cytoplasm. Imagine Benjamin accidentally receives an IV solution containing 1.5% sodium chloride. What do you think would happen to his red blood cells?

Their red blood cells would lose water across their cell membrane and begin to shrink.

The red blood cells would first absorb water across their cell membrane, then lose water across their cell membrane.

Their red blood cells would absorb water across their cell membrane and begin to swell.

The red blood cells will first lose water across their cell membrane, then absorb water across their cell membrane.

Nora and Mason are curious about how cells keep things balanced, so they decide to run a cool experiment! They use a short section of clear dialysis tubing to make a tiny “cell” bag, filling it with clear starch solution and sealing it up. Then, they prepare a beaker with a light-yellow iodine solution (which turns dark blue if it meets starch!). After placing their model cell into the beaker and waiting thirty minutes, they notice something interesting: the solution inside the bag turns dark blue, but the beaker’s solution stays light-yellow. Based on their experiment, what can Nora and Mason conclude about the membrane of their model cell?

The membrane allows the smaller iodine molecules to pass through, but it does not allow the larger starch molecules to pass through.

The membrane allows the larger iodine molecules to pass through, but it does not allow the smaller starch molecules to pass through.

The membrane allows the smaller starch molecules to pass through, but it prevents the larger iodine molecules from passing through.

The membrane allows the larger starch molecules to pass through, but it prevents the smaller iodine molecules from passing through.

James and Anika are curious scientists studying a chemical reaction inside a cell. At first, they notice the reaction is super slow without any help. But when they add a special enzyme, the reaction suddenly speeds up! Which explanation best describes how the enzyme is helping James and Anika with their experiment?

The enzyme decreases the activation energy, allowing more molecules to react at normal cellular temperatures.

The enzyme increases the activation energy needed so the reaction happens faster.

The enzyme changes the products of the reaction, making them more stable.

The enzyme supplies the energy needed for the reaction to occur without using ATP.

Abigail and Isla are observing a cell that is busy moving sodium ions from a low concentration to a high concentration. Which piece of evidence would best convince them that this process is using active transport?

ATP is used to power protein pumps in the membrane.

The cell membrane is permeable to sodium ions.

Sodium ions move without the use of any transport proteins.

Sodium ions diffuse across the membrane until equilibrium is reached.

During a science experiment, Maya is given an IV solution that is hypotonic compared to her blood cells. What is most likely to happen to Maya's blood cells?

B. Water moves into the blood cells, causing them to swell and possibly burst.

A. Water moves out of the blood cells, causing them to shrink.

C. Solutes move into the blood cells until equilibrium is reached.

D. The blood cells actively pump out water to maintain their shape.

Test Review Questions Unit ! Quiz

1.

DROPDOWN QUESTION

30 sec • 1 pt

Evelyn, Abigail, and Emma are working on a science project about how plants and animals get their energy. The statement that would help them best compare the biochemical processes of photosynthesis and cellular respiration is: (a)

Photosynthesis is the process of tr

Photosynthesis is the plant process

Photosynthesis is the bacterial pro

Tags

NGSS.HS-LS2-5

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Noah, Abigail, and Liam are working together to help Vernon build a cool model of photosynthesis using the diagram below. The letters A, B, and C each stand for a mystery reactant or product in the process. Should water (H₂O) join the model as a reactant or product? If yes, where should it go?

No, it should not be included

Yes, as reactant A

Yes, as product B

Yes, as reactant C

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

3.

DRAG AND DROP QUESTION

30 sec • 1 pt

Elijah, David, and Nora set up a sealed terrarium with plants and small animals for a science experiment. After several days, they notice that the oxygen and carbon dioxide levels stay the same. The best conclusion that can be drawn about the relationship between photosynthesis and cellular respiration in their mini-ecosystem is that (a)

Photosynthesis and cellular respira

Photosynthesis uses the oxygen prod

Cellular respiration uses the oxyge

Cellular respiration produces gluco

Tags

NGSS.HS-LS2-3

NGSS.HS-LS2-5

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

David, Samuel, and Liam are on a science quest to discover how temperature and pH affect the super enzyme amylase, which breaks down starch. Here’s what they find: • At 37 °C and pH 7, the reaction zooms ahead. • At 60 °C, the reaction rate takes a nosedive. • At pH 3, the enzyme is almost asleep! Based on their adventure, which conclusion is best supported by their data?

Enzymes work best at high temperatures and acidic pH levels.

Extreme temperature or pH can change an enzyme’s shape, slowing or stopping its activity.

Increasing temperature always increases enzyme activity.

Enzymes permanently stop working once temperature or pH changes, even if normal conditions return.

5.

MATCH QUESTION

30 sec • 1 pt

Match each scenario with what will happen to the plant cell.

Plant cell loses water and turgor pressure

It will stay the same

Plant cell placed in a hypotonic solution

It will wilt

Plant cell placed in an isotonic solution

It will shrink

Plant cell placed in a hypertonic solution

It will swell

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Liam and Scarlett are exploring how the Golgi apparatus and the endoplasmic reticulum work together to help the cell membrane keep everything balanced. Which of the following scenarios best shows this teamwork in action?

Waste produced as a result of cellular respiration is packaged and stored for eventual release through active transport.

Specific instructions code for the manufacturing of proteins, which are assembled and used as enzymes for the production of the cell’s energy.

When transport vesicles are received, chemicals are modified: the resulting products are packaged for transport to other parts of the cell.

Chemical messages are transported to all parts of the cell to signal the increase in protein synthesis and the excretion of excess water.

7.

MATCH QUESTION

30 sec • 1 pt

Match each plant tissue treatment with the structures that would MOST likely remain after the treatment.

All macromolecules are broken down into monomers; no large structures remain.

The water inside the cell was allowed to evaporate.

Only the cytoplasm remains in the plant tissue.

Enzymes were used to increase the rates of all chemical reactions in the cell.

The plant tissue is left dehydrated, but all structures are still present.

The organelles, cell membrane, and cell wall were removed, leaving only the cytoplasm.

Chemical reactions in the cell are accelerated, but no structures are removed.

The cytoplasm and organelles were removed, leaving only the cell membrane and cell wall.

Only the cell membrane and cell wall, made mostly of cellulose, proteins, and phospholipids, remain.

Strong acids were used to break apart all macromolecules into their component monomers.

8.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Jackson and Avery are on a mission to learn about white blood cells! Which organelle, if any, must be present in these amazing defenders of the body?

White blood cells must have cell walls to enable them to engulf damaged red blood cells and pathogens by phagocytosis.

White blood cells must have chloroplasts to produce the energy the cells need to perform their functions.

White blood cells must have a rough endoplasmic reticulum so that large molecules, such as antibodies, can be synthesized.

White blood cells cannot have organelles because they are prokaryotic cells.

Tags

NGSS.MS-LS1-2

9.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

James and Ethan are curious scientists! They each have a mystery cell sample: James has plant cells (Sample 1) and Ethan has red blood cells from an animal (Sample 2). After placing both samples in a hypotonic solution, they notice something interesting. Based on the diagram, which is the BEST explanation for how the plant cell structures help maintain homeostasis compared to the animal cell structures?

The animal cell can't survive but the plant cell has a cell wall to protect the cell membrane, so it does not break.

In the animal cell, the cell membrane protects the cell from breaking, but the plant cell has both a cell wall and cell membrane.

The plant cell has a vacuole that holds the water and expands, preventing it from pushing against the cell membrane. The animal cell has a cell wall that breaks when too much water enters.

Tags

NGSS.MS-LS1-2

10.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Level 2 Ethan and Anika are in the science lab, experimenting with red blood cells and different sodium chloride solutions. In one test tube, the red blood cells kept their normal shape, but in another, the cells swelled up and burst! The cells that stayed normal were in a state of homeostasis. Which process BEST explains what happened to the red blood cells that swelled and burst, and why?

A. Salt diffused into the red blood cells and the higher concentration of salt caused the red blood cells to burst.

B. Water diffused into the red blood cells by osmosis, and the higher concentration of water caused the red blood cells to burst.

C. Salt was taken into the red blood cells by passive transport, and the higher concentration of salt caused the red blood cells to burst.

D. Water was taken into the red blood cells by active transport, and the higher concentration of water caused the red blood cells to burst.

Tags

NGSS.HS-LS1-3

Test Review Questions Unit !

22 questions

Evelyn, Abigail, and Emma are working on a science project about how plants and animals get their energy. The statement that would help them best compare the biochemical processes of photosynthesis and cellular respiration is: (a)

Noah, Abigail, and Liam are working together to help Vernon build a cool model of photosynthesis using the diagram below. The letters A, B, and C each stand for a mystery reactant or product in the process. Should water (H₂O) join the model as a reactant or product? If yes, where should it go?

Match each scenario with what will happen to the plant cell.

Liam and Scarlett are exploring how the Golgi apparatus and the endoplasmic reticulum work together to help the cell membrane keep everything balanced. Which of the following scenarios best shows this teamwork in action?

Match each plant tissue treatment with the structures that would MOST likely remain after the treatment.

Jackson and Avery are on a mission to learn about white blood cells! Which organelle, if any, must be present in these amazing defenders of the body?

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Test Review Questions Unit !

22 questions

Evelyn, Abigail, and Emma are working on a science project about how plants and animals get their energy. The statement that would help them best compare the biochemical processes of photosynthesis and cellular respiration is: (a)

Noah, Abigail, and Liam are working together to help Vernon build a cool model of photosynthesis using the diagram below. The letters A, B, and C each stand for a mystery reactant or product in the process. Should water (H2O) join the model as a reactant or product? If yes, where should it go?

Match each scenario with what will happen to the plant cell.

Liam and Scarlett are exploring how the Golgi apparatus and the endoplasmic reticulum work together to help the cell membrane keep everything balanced. Which of the following scenarios best shows this teamwork in action?

Match each plant tissue treatment with the structures that would MOST likely remain after the treatment.

Jackson and Avery are on a mission to learn about white blood cells! Which organelle, if any, must be present in these amazing defenders of the body?

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Biology

Noah, Abigail, and Liam are working together to help Vernon build a cool model of photosynthesis using the diagram below. The letters A, B, and C each stand for a mystery reactant or product in the process. Should water (H₂O) join the model as a reactant or product? If yes, where should it go?