Which statement most accurately predicts the result of interfering with populations in the web?

Removing the fox will affect the rabbit and mouse populations.

Removing all the mountain lions from the food web will benefit the ecosystem.

Removing the grasshopper will impact the fox population

A team of ecologists observed feeding patterns of several populations in the desert. The energy pyramid shown below depicts the feeding patterns the ecologist observed. Which of the following best explains the difference in the amount of available energy in the trophic levels of the desert ecosystem?

There is less available energy in the fourth trophic level because of the loss of energy through metabolism in each of the lower trophic levels.

There is less energy available in the producers because their tissues are less dense than those at higher trophic levels.

There is more energy available in the second trophic level because less energy is needed for hunting compared to the higher trophic levels.

There is more available energy in the birds of prey because they have greater muscle mass for storing energy than organisms in lower trophic levels have.

A prokaryotic cell is...

Cells that don't contain a nucleus or any other membrane-bound organelles.

Cells that don't contain a nucleus but do contain other membrane-bound organelles.

Cells that contain a nucleus but no other membrane-bound organelles.

Cells that contain a nucleus and other membrane-bound organelles.

A Eukaryotic cell is...

A cell containing a nucleus and other membrane-bound organelles.

Cell with no membrane-bound organelles.

A cell containing a nucleus and other nucleus-bound organelle.

Which statement explains the importance of maintaining a constant internal environment to ensure proper enzyme functioning?

Increasing the temperature and pH can alter the specific shape of enzymes.

Changes in pH and temperature will cause the enzyme reaction rate to be too fast.

Temperature and pH determine amino acid sequences in enzymes

Changes in pH will change the genetic instructions of enzymes

Base your answer to the question on the diagram below and on your knowledge of biology. The diagram represents two solutions, A and B , separated by a selectively permeable membrane. Which statement best describes the outcome after 20 minutes?

Solution A will contain approximately the same number of glucose molecules as solution B .

Solution A will contain all of the water molecules.

Solution B will remain unchanged.

Solution B will lose all of the glucose molecules to solution A .

The diagram below represents a cell in water. Formulas of molecules that can move freely across the cell membrane are shown. Some molecules are located inside the cell and others are in the water outside the cell. Based on the distribution of these molecules, what would most likely happen after a period of time?

The concentration of O 2 will increase inside the cell.

The concentration of CO 2 will remain the same inside the cell.

The concentration of O 2 will remain the same outside the cell.

The concentration of CO 2 will decrease outside the cell.

The diagram below shows the relative concentration of molecules inside and outside of a cell. Which statement best describes the general direction of diffusion across the membrane of this cell?

Carbon dioxide would diffuse out of the cell.

Glucose would diffuse into the cell.

Protein would diffuse out of the cell.

Oxygen would diffuse into the cell.

This process best represents

the bonding of simple sugars to form a starch molecule

the bonding of amino acids to form a starch

the digestion of amino acids to form a starch molecule

the digestion of simple sugars to form a starch molecule

What does the process of photosynthesis produce?

glucose, which is metabolized into more complex carbohydrates by dehydration synthesis

starch, which is metabolized into less complex molecules by dehydration synthesis

protein, which is metabolized into less complex molecules by dehydration synthesis

glycerol, which is metabolized into more complex carbohydrates by dehydration synthesis

The diagram represents what occurred when an onion cell and a red blood cell were placed in distilled water. The best explanation for why the onion cells do not burst, while the red blood cells often do is that

the onion cells have a cell membrane, which can protect them from bursting

the red blood cells have only a cell membrane, which does not protect them from bursting

the onion cells do not have a cell wall what could protect them from bursting

the red blood cells have a cell wall, which does not protect them from bursting

Red onion cells undergo the change represented in the picture below. This change is most likely caused by the cell being transferred from

distilled water to starch indicator

When preparing a wet mount slide of onion cells, a student put a drop of Lugol's iodine on the slide. This iodine was added to:

make cell structures more visible

increase the rate of photosynthesis in cells

The parents of a new baby believe they brought the wrong child home from the hospital. Gel electrophoresis was performed using DNA samples from the parents and the child. A section of the gel electrophoresis results are shown in the diagram. Which conclusion is valid based on the gel electrophoresis results?

They have the correct child, because her genetic information came from both parents.

They have the correct child, because her genetic information is identical to that of the father.

They have the wrong child, because her genetic information does not match that of either parent.

They have the wrong child, because her genetic information matches only that of the mother.

How should the control group be treated differently than the experimental group?

Both groups should be exactly the same EXCEPT for the variable. The control group doesn’t get the variable.

The control group gets double the variable.

The control group gets half the variable.

Which statement describes a failure of homeostasis in humans?

A viral infection leads to a decrease in the number of white blood cells being produced in the body.

When activity in an individual increases, the body temperature rises and the individual sweats.

As the concentration of carbon dioxide increases in the human body, the lungs begin to expel more carbon dioxide.

After an individual gets a cut, certain chemical changes begin the healing process.

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Practice Problem

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NGSS

HS-LS1-3, HS-LS1-7, HS-LS1-5

+24

Standards-aligned

Carrie Brown

Used 396+ times

FREE Resource

60 questions

Show all answers

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The removal of mitochondria from a typical animal cell would have an immediate effect on the cell’s production of

DNA

proteins

ATP

Carbon Dioxide

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which factor would be an abiotic limiting factor for fish living in a lake in New York State?

amount of Algae

amount of fisherman

amount of acid rain

amount of predators in the lake

Tags

NGSS.MS-LS2-1

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A native species is competing for resources with a nonnative species that was accidentally introduced into the area. The nonnative species is more likely to survive than the native species when

the nonnative species have no competition

both eat the same food

the nonnative is immune to diseases

predators prey on both species

Tags

NGSS.HS-LS4-2

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

When a person receives a transplanted organ, many medications are necessary to keep the organ from being rejected. The process of organ rejection is similar to the one involved in

a genetic mutation

an allergic reaction

growth of cancer

the production of an antigen

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The result of the introduction of Hydrilla into native ecosystems in the United States has shown that

Hydrilla won't spread after a year because it is not native

chemicals will be needed to control to maintain the ecosystem

organisms will build immunity and survive

when humans interfere with ecosystems, there can be serious consequences

Tags

NGSS.HS-LS2-6

NGSS.HS-LS2-7

NGSS.HS-LS4-5

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

One result of the ability of organisms to detect and appropriately respond to stimuli is

an organ malfunction

dynamic equalibrium

gene manipulation

an allergic reaction

Tags

NGSS.HS-LS1-3

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Replication of DNA (in eukaryotes) occurs in the

cell membrane

nucleus

ribosome

mitochondria

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The removal of mitochondria from a typical animal cell would have an immediate effect on the cell’s production of

Which factor would be an abiotic limiting factor for fish living in a lake in New York State?

A native species is competing for resources with a nonnative species that was accidentally introduced into the area. The nonnative species is more likely to survive than the native species when

When a person receives a transplanted organ, many medications are necessary to keep the organ from being rejected. The process of organ rejection is similar to the one involved in

The result of the introduction of Hydrilla into native ecosystems in the United States has shown that

One result of the ability of organisms to detect and appropriately respond to stimuli is

Replication of DNA (in eukaryotes) occurs in the

Synthesis of Amino Acids occurs in the

Energy (in the form of ATP) is produced via what process

What plant organelle is used to make sugars?

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