Which cell structure is correctly matched with its function?

vacuole: stores material inside the cell

cell membrane: divides the cell into two halves

lysosome: manufactures proteins

ribosome: packages and modifies proteins

A student is developing a model that shows the steps of protein synthesis. The model should include activities in which three structures?

ribosomes, rough endoplasmic reticulum, Golgi apparatus

nucleus, Golgi apparatus, mitochondria

mitochondria, rough endoplasmic reticulum, nucleus

Golgi apparatus, nucleus, lysosome

nucleus, cytoskeleton, cell membrane

Which of the following processes is directly controlled by the cell nucleus?

Protein synthesis because DNA in the nucleus contains the instructions for making proteins

Osmosis because the nucleus has nuclear pores that allow water to move in and out.

Energy production because the nucleus contains mitochondria.

Cell membrane assembly because the cell membrane is made from the nuclear envelope.

Waste removal because a steady stream of molecules moves out of the nucleus.

Which of the following activities occurs in both prokaryotic cells and eukaryotic cells?

Proteins are assembled on ribosomes.

A large central vacuole stores DNA and RNA.

Mitochondria provide energy for cell processes.

Chloroplasts capture and transform the energy of sunlight.

The rough endoplasmic reticulum releases enzymes to break apart wastes.

Which are examples of active transport across the cell membrane?

diffusion and facilitated diffusion

Elizabeth is conducting an investigation to study how molecules are transported into and out of a cell. Elizabeth builds a model of a cell using a U-shaped tube. A barrier, which is permeable to water, but not sugar, is placed on the bottom of the tube to model the cell membrane. Elizabeth adds two different solutions to each side of the tube. The solute in each solution is sugar and the solvent is water. The initial levels of solution in Side A and Side B are equal. The concentration of sugar in Side A is lower than the concentration of sugar in Side B. What is Elizabeth likely to observe?

Water molecules will move from Side A to Side B. The solution level on Side A will fall and the solution level on Side B will rise.

Water molecules will move from Side B to Side A. The solution level on Side A will rise and the solution level on Side B will fall.

Sugar molecules will move from Side A to Side B. The solution level on Side A will fall and the solution level on Side B will rise.

Sugar molecules will move from Side B to Side A. The solution level on Side A will rise and the solution level on Side B will fall.

Wes places red blood cells in a petri dish with pure water and observes them under a microscope. He drew a model to illustrate his observations. What is the most likely explanation for Wes’s observations?

The red blood cells were placed in a hypotonic solution. Water moved from the outside of the cells to the inside of the cells until the cells burst.

The red blood cells were placed into an isotonic solution. Water moved into and out of the cells to maintain homeostasis.

The red blood cells were placed into an isotonic solution. Water moved into the cells until the cells burst.

The red blood cells were placed in a hypertonic solution. Water moved from the inside of the cells to the outside of the cells to maintain homeostasis.

The model illustrates a process by which a substance is taken up by a cell. Which statement describes the process? Select the correct answer.

The process shown in the model requires energy from the cell.

The cell wall shown in the model is changed into a cell membrane.

The cell membrane in the model remains intact throughout the process.

The model shows the process of facilitated diffusion.

Which of the following describes the structure and function of the cell membrane?

The hydrophilic head groups of the lipid molecules are exposed to the outside of the cell and the cytoplasm, which is a water-like environment. The hydrophobic tails form an oily layer inside the membrane that keeps water out of the cell.

The hydrophilic head groups of the lipid molecules are exposed to the outside of the cell and the cytoplasm, which is a water-like environment. The hydrophobic tails form an oily layer inside the membrane that allows water to enter the cell.

The hydrophobic head groups of the lipid molecules are exposed to the outside of the cell and the cytoplasm, which is a water-like environment. The hydrophilic tails form an oily layer inside the membrane that keeps water out of the cell.

The hydrophobic head groups of the lipid molecules are exposed to the outside of the cell and the cytoplasm, which is a water-like environment. The hydrophilic tails form an oily layer inside the membrane that allows water to enter the cell.

The pancreas is an organ present in some animals. It produces enzymes that are used in the digestive system of the animal. Which cell structure is likely to be abundant inside pancreas cells?

ribosomes, because enzymes are synthesized on ribosomes

cell walls, because cell walls cannot be digested by enzymes

chloroplasts, because chloroplasts provide the energy for making enzymes

nuclei, because nuclei contain the instructions for synthesizing enzymes

Which represents the hierarchical organization of a multicellular organism, from least complex level to most complex level?

cell, tissue, organ, organ system

cell, organ, organ system, tissue

tissue, cell, organ, organ system

organ, cell, tissue, organ system

Escherichia coli, or E.coli, is a species of bacteria. Entamoeba histolytica, or E. histolytica, is a single-celled amoeba. What do E. coli and E. histolytica have in common? Select the correct answer.

They reproduce or make more of their own kind.

They live without an energy source.

They are unable to respond to changes in their environment.

They maintain homeostasis by cell specialization.

In the human digestive system, the stomach, pancreas, and intestines work together. Which of the following is an example of a tissue in the digestive system?

smooth muscle that lines the stomach

enzyme molecules in the stomach

Which statement about scientific theories is most accurate?

Theories are explanations based on evidence and can change with new information

Theories always become scientific laws when proven

Theories are just guesses that scientists make

Theories never change once they're accepted.

Which statement about science is correct?

Science involves studying the natural world

Science investigates supernatural events

Science is a list of unchanging facts

Science only proves what we already believe.

In the human digestive system, the stomach, pancreas, and intestines work together. Which of the following is an example of a tissue in the digestive system?

smooth muscle that lines the stomach

enzyme molecules in the stomach

Which statement supports classifying viruses as non-living?

Viruses need living cells to exist

Viruses don’t have genetic information

Viruses don't respond to their environment

Viruses can reproduce on their own

In a neutral atom, which two particles are usually present in equal numbers?

electrons in inner and outer shells

protons and inner-shell electrons

What allows water molecules to form hydrogen bonds with each other?

The slightly charged parts of the water molecule

The strong bonds between oxygen and hydrogen

The small size of hydrogen atoms

How are starch and glucose related?

Starch is made up of many glucose molecules

They combine to form nucleic acids

In a chemical reaction, what always happens?

Electrons move to break or form bonds

How do enzymes affect chemical reactions?

They lower the activation energy needed for the reaction

They increase the energy of the products

They decrease the energy of the reactants

They make the energy difference between products and reactants smaller

How do buffers affect the pH of human blood?

They prevent small changes in pH

They stop chemical reactions that could change pH

What makes an atom become an ion?

Sharing electrons with another atom

Forming a molecule through a chemical reaction

If one sodium isotope has 11 protons, 12 neutrons, and 11 electrons, which could be true for another sodium isotope?

11 protons, 13 neutrons, 11 electrons

11 protons, 12 neutrons, 10 electrons

12 protons, 12 neutrons, 11 electrons

11 protons, 12 neutrons, 12 electrons

In a chemical reaction, ______ always happens.

Electrons move to break or form bonds

Stewart is investigating how plants maintain homeostasis in response to the amount of water that is available to them. As part of the investigation, he studies a plant that receives sufficient water and has straight, upright stems and firm leaves. He also studies another plant that was grown in dry soil, and that has wilted stems and leaves. When Stewart examines the cells of the plants under a microscope, which organelle will display the greatest difference between the two plants?

the central vacuole, because it stores water and provides support

the nucleus, because chromosomes thicken in water

the cell membrane, because water diffuses across it

chloroplasts, because photosynthesis depends on water volume

ribosomes, because protein synthesis depends on water volume

Unit 2 Cells Exam Review

Authored by Alison Hendriksen

Biology

9th Grade

NGSS covered

Used 7+ times

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48 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The invention of which instrument allowed scientists to discover cells?

eyeglasses

magnifying glass

microscope

telescope

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which describes a eukaryotic cell, but not a prokaryotic cell?
Fill in the blank: A eukaryotic cell ________.

uses DNA to control cell activities

is surrounded by a cell membrane

makes and uses proteins

contains DNA in a nucleus

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which model shows a prokaryotic cell?

III

Which of these structures are present in plant cells, but not animal cells?

cell wall and cell membrane

cell membrane and mitochondria

cell wall and chloroplasts

mitochondria and chloroplasts

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A student is developing a model to show how most proteins are synthesized in animal cells. Which organelles would be LEAST useful for the student to include in the model?

ribosomes

endoplasmic reticulum

Golgi apparatus

chloroplasts

The instructions for making proteins are coded in the ______________ of a cell.

cytoplasm

endoplasmic reticulum

DNA

nucleus

In a eukaryotic cell, the DNA is located in the ______________.

cytoplasm

endoplasmic reticulum

mitochondria

nucleus

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Unit 2 Cells Exam Review

The invention of which instrument allowed scientists to discover cells?

Which describes a eukaryotic cell, but not a prokaryotic cell? Fill in the blank: A eukaryotic cell ________.

Which model shows a prokaryotic cell?

Which of these structures are present in plant cells, but not animal cells?

A student is developing a model to show how most proteins are synthesized in animal cells. Which organelles would be LEAST useful for the student to include in the model?

The instructions for making proteins are coded in the ______________ of a cell.

In a eukaryotic cell, the DNA is located in the ______________.

Which cell structure is correctly matched with its function?

A student is developing a model that shows the steps of protein synthesis. The model should include activities in which three structures?

Which of the following processes is directly controlled by the cell nucleus?

Access all questions and much more by creating a free account

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Popular Resources on Wayground

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Which describes a eukaryotic cell, but not a prokaryotic cell?
Fill in the blank: A eukaryotic cell ________.