1st Semester Review

A student is using a microscope to observe samples taken from pond water. She notices something that she thinks may be a living thing. Which feature would BEST support that the unknown sample is a living thing?

• Since all living things move, observing something move in the unknown sample will provide the evidence that it is a living thing.

• Since all living things are green, observing and unknown sample is green will provide the evidence that it is a living thing.

• Since all living things are made up of cells observing a cell in the unknown sample will provide the evidence that it is a living thing.

• Since all living things make bubbles, observing an unknown sample that is making bubbles will provide the evidence that it is a living thing.

Tags

NGSS.MS-LS1-1

A scientist is observing a figure under the microscope that appears to be alive, however she is not sure. The scientist observes a membrane, but after closer observation notices that the image is not clear. What additional observation could she make to ensure that the object that she is observing under the microscope is alive?

• A wall around the figure to form the basic structure of the object.

• Organelles to ensure that materials are processed in the cell.

• The object moving and splitting into two parts.

A student has a robotic vacuum cleaner at his house. It turns on at the push of a button. It changes direction when it senses it is getting near a wall and changes power level when it goes from carpet to hardwood floor. It learns where the stairs and drop-offs are in their house so it doesn’t fall down. The robot vacuum even goes back to its charging station when its energy level is low to recharge itself.

Which of the following arguments is correct regarding if the vacuum is living or non-living?

• The robot vacuum is alive because it moves and obtains new information.

• The robot vacuum is alive because it responds to stimuli and uses energy.

• The robot vacuum is not alive because it is not made of cells and cannot reproduce.

• The robot vacuum is not alive because it does not grow and develop and does not require oxygen.

Tags

NGSS.MS-LS1-1

Which structure in the model above indicates that this must be a plant cell?

• cell wall

• cell membrane

• nuclear membrane

• mitochondria

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NGSS.MS-LS1-2

NGSS.MS-LS1-1

A scientist is examining slides of cells from organisms in different groups. What two features would the scientist use to distinguish a plant cell from an animal cell?

• presence or absence of a nucleus and cell membrane

• presence or absence of mitochondria

• presence or absence of a cell wall and chloroplasts

• presence or absence of a cell membrane and cytoplasm

Use the passage to answer the question that follows:

On a train, the conductor controls the speed of the train and decides when and where it stops. The train doors allow passengers and materials to get in and out of the train. The dining car makes food for the passengers. The luggage car stores luggage, freight, and other materials. The locomotive engine provides power for the train to run.

If you were asked in science class to use this analogy of a train to create a model that shows how the parts of a train are analogous to the parts of a cell, you would say that the conductor is analogous to which part of the cell?

• Mitochondria

• Chloroplast

• Lysosome

• Nucleus

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NGSS.MS-LS1-2

Animal cells have organelles that have specific structures and functions. Healthy animal cells are able to carry out all the necessary processes of life. Which of the following best explains why an animal cell would not be able to reproduce?

• An animal cell would not be able to reproduce if the lysosome was damaged because it is responsible for producing the energy used to perform cell division.

• An animal cell would not be able to reproduce if the nucleus was damaged because it is responsible for housing the genetic information needed for cell division.   

• An animal cell would not be able to reproduce if the cell wall was damaged because it is responsible for letting the materials into the cell that are needed for cell division.

• An animal cell would not be able to reproduce if the cytoplasm is damaged because it is responsible for converting sugar into nutrients that are needed to perform cell division. 

Tags

NGSS.MS-LS1-2

You are looking at cells under the microscope. You notice one type of cell has many more lysosomes than the others. Your teacher said white blood cells have lots of lysosomes. Why would the white blood cells have an abundance of lysosomes?

• White blood cells have many lysosomes because they need lots of ATP to help carry oxygen.

• White blood cells have many lysosomes because they need to produce lots of proteins to help build muscle.

• White blood cells have many lysosomes because they need to produce a lot of glucose and oxygen.

• White blood cells have many lysosomes because they need to destroy pathogens with digestive enzymes.

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NGSS.MS-LS1-2

Which of the following best explains what would happen to animal cells if plant cells did not perform photosynthesis?

• Animal cells would not be able to process energy from sunlight.

• Animal cells would not be able to produce glucose through cellular respiration.

• Animal cells would not be able to produce oxygen through cellular respiration.

• Animal cells would not be able to produce energy through cellular respiration.

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

The diagram to the above best represents what important cell process?

• photosynthesis

• osmosis

• fermentation

• cellular respiration

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-7