A person with swollen gums rinses his mouth with warm salt water, and the swelling decreases. Which of the following has occurred?

The water in the gums has moved out due to the high concentration of salt in the solution.

The swollen gums have absorbed the saltwater solution.

The saltwater solution lowers the temperature of the water in the gums.

The salt in the solution has moved against the concentration gradient.

Osmosis occurs when there is a different concentration of solute molecules on each side of the membrane. The drawing below shows a beaker containing a 30% salt solution and a suspended cell containing a 10% salt solution. What statement best describes the cell after 20 minutes?

Water will move from the cell into the beaker, resulting in a smaller cell.

Water will move from the beaker into the cell, resulting in a larger cell.

Salt will move from the cell into the beaker, resulting in a smaller cell.

Salt will move from the beaker into the cell, resulting in a larger cell.

Muscle cells are responsible for obtaining energy so the body can perform voluntary and involuntary movement. Using you knowledge about organelles and muscles, how would a muscle cell differ from other types of animal cells?

The muscle cell would have more mitochondria than the other types of animal cells.

The muscle cell would have larger centrioles than the other types of animal cells.

The muscle cell would have a larger golgi apparatus than other types of animal cells.

The muscle cell would have more endoplasmic reticulum than the other types of animal cells.

Cells found in plants and animals have similarities but can differ in function. Consider the following two organisms: a corn plant cell ( Zea mays) and a camel cell ( Bactrianus ferus ). What is the best explanation for the difference in the cellular vacuole size between these two biotic organisms?

The camel cells’ have a small vacuole size because it does not need long term water and electrolyte storage.

The corn cells’ have a small vacuole size because it does not need long term water and electrolyte storage.

The camel cells’ have a small vacuole size because it is not in contact with toxins that need to be removed from the cell.

The corn cells’ have a large vacuole size because it is in contact with many toxins in the soil which need to be removed from the cell.

Cells can be classified into two different categories: prokaryotic and eukaryotic. Which of the following information is needed in order to determine if an organism is prokaryotic?

The organism’s internal structures.

The organism’s color and mass.

If the organism is unicellular or multicellular.

The methods the organism uses to feed and move.

Using a microscope in the science lab, Jill observed two unknown cell: Cell 1 and Cell 2. Cell 1 she identified as a plant cell and Cell 2 as an animal cell. Her teacher told her she identified the cells correctly. What did Jill most likely observe to correctly identify the cells?

Cell 1 had a cell wall and Cell 2 did not.

Cell 2 had a cell membrane and Cell 1 did not.

Cell 2 had a chloroplast and Cell 1 did not.

Cell 1 had a nucleus and Cell 2 did not.

What is the advantage of cells being so small?

The cell then has a larger surface area to volume ratio which means it can move nutrients into the cell and waste out more efficiently.

Small cells contain a greater quantity of enzymes than large cells.

Small cells do not require energy and get everything they need from osmosis.

The cell has a smaller surface area to volume ratio which means it can move nutrients into the cell and waste out more efficiently.

The rough endoplasmic reticulum is a cell structure that consists of folded membranes that contain ribosomes. What is the advantage of the folded membranes?

increases surface area in order to produce more proteins

decreases surface area in order to produce more proteins

increases volume of the edoplasmic reticulum in order to produce more energy

decreases volume of the endoplasmic reticulum in order to make more energy

If a cell’s lysosomes were damaged, which of the following would most likely occur?

The cell would be less able to break down molecules in its cytoplasm.

The cell would produce more proteins than it needs.

The cell would have chloroplasts that appear yellow rather than green.

The cell would be less able to regulate the amount of fluid in its cytoplasm.

Which of the following functions does active transport perform in a cell?

moving substances against a concentration gradient

packaging proteins for export from the cell

distributing enzymes throughout the cytoplasm

equalizing the concentration of water inside and outside the cell

In an emergency trauma room, a doctor accidentally gives a patient a large transfusion of distilled water directly into one of his veins instead of blood. Predict what might happen if distilled water was given to the patient instead of blood.

have serious, perhaps fatal effects because the red blood cells would tend to burst

have no unfavorable effect as long as the water was sterile

have serious, perhaps fatal effects because there would be too much fluid for the heart to pump.

have serious, perhaps fatal effects because the red blood cells would tend to shrivel

A beaker is divided into two halves, A & B, by a membrane that is freely permeable to the water and NaCl but not to protein. Side A is half-filled with a solution of 8% protein, while side B is half filled with a 2% protein solution. Predict what would happen to side A after a few hours.

The number of water molecules has increased.

The number of protein molecules has increased.

The number of water molecules has decreased.

The percentage of water has decreased.

A research group has discovered that damselflies, a type of dragonfly, are being infected by a particular type of aquatic protozoan. Both young and adult damselflies are not directly infected by the protozoan but contract the infection from the prey they eat. The graph shows the percentage of adult damselflies infected by protozoans during the summer and early fall. Which of the following conclusions is supported by the graph?

Infection in embanked ponds increased during the sampling period.

Protozoans were more common in creek-fed ponds than embanked ponds.

Protozoans reproduce more quickly in embanked ponds than creek-fed ponds.

Infection in creed-fed ponds remained constant throughout the sampling period.

An osmosis investigation was conducted using chicken eggs to represent cells with semi permeable membranes. The mass of each egg was measured to determine how much water diffused into or out of the eggs. The eggs were first soaked in vinegar to dissolve the shell. Each egg was then placed in one of three different solutions for 24 hours. The table below shows the results of the investigation. Based on this experiment, which of the following should be inferred about cells with semi permeable membranes?

Water enters the cell when placed in environments of high water concentration.

Substances other than water may also cross the cell membrane.

Substances other than water may block pores in the cell membrane.

Water leaves the cell when placed in environments with a low concentration of solutes

EOC Week 1

Authored by Priscilla Samayoa

Biology

8th - 9th Grade

NGSS covered

Used 79+ times

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38 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Cell theory was first proposed in 1838. Evidence obtained through additional scientific investigations resulted in the current cell theory. Which statement describes a component of the original cell theory that was removed because of the new scientific knowledge?

All living things are made of cells.

All cells come from other preexisting cells.

Cells form through spontaneous generation.

Cells are the basic structural and functional units of life.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which invention from the 17th century allowed for the development of modern cell theory?

X-rays

computers

the light microscope

the scanning electron microscope

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A plant and an animal are both living things. According to the Cell Theory, what can you conclude about these two very different organisms?

Plants have cells but animals do not.

They are both made of one or more cells.

They both come from the same kind of cell.

They both come from a non-living organism.

The combined observations of Mattias Schleiden, Theodor Schwann and Rudolph Virchow resulted in the formation of the cell theory. Which of the following is not part of the cell theory?

All cells contain a nucleus

All cells come from other living cells.

All living organisms are made of one or more cells.

Cells are the basic unit of structure and function of all living things.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

There are some similarities between prokaryotic and eukaryotic cells. Which of the following structures is found in both prokaryotic and eukaryotic cells?

mitochondrion

nucleus

lysosome

ribosome

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Look at the cross section of a cell membrane of a eukaryotic cell. H+ ions are being pumped from a low concentration to a high concentration. How do you describe this type of transport across the cell membrane?

Active transport

Passive Transport

Facilitated Diffusion

co-transport

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type(s) of cells have genetic material that is contained in a nucleus?

bacteria

plants only

animals only

both plans and animals

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EOC Week 1

Cell theory was first proposed in 1838. Evidence obtained through additional scientific investigations resulted in the current cell theory. Which statement describes a component of the original cell theory that was removed because of the new scientific knowledge?

Which invention from the 17th century allowed for the development of modern cell theory?

A plant and an animal are both living things. According to the Cell Theory, what can you conclude about these two very different organisms?

The combined observations of Mattias Schleiden, Theodor Schwann and Rudolph Virchow resulted in the formation of the cell theory. Which of the following is not part of the cell theory?

There are some similarities between prokaryotic and eukaryotic cells. Which of the following structures is found in both prokaryotic and eukaryotic cells?

Look at the cross section of a cell membrane of a eukaryotic cell. H+ ions are being pumped from a low concentration to a high concentration. How do you describe this type of transport across the cell membrane?

Which type(s) of cells have genetic material that is contained in a nucleus?

Which characteristic do most plants have in common?

Which cell structure is correctly paired with its primary function?

The diagram below represents a cell of a green plant. Solar energy is used to produce energy-rich compounds in which structure?

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