Mrs. Peterson finds an unusual object on the forest floor. After she examines it under a microscope and performs several lab tests, she concludes that the object is a living thing. What observations did Mrs. Peterson likely make that led to this conclusion?

• The object has a cell wall.

• The object has a nucleus.

• The object is made of cells.

• The object is made of minerals.

Tags

NGSS.MS-LS1-1

One part of the cell theory states that all living things are made up of one or more cells. Scientists had to find ways to test this theory. What technology did scientists come up with to test this theory?

• microscopes

• lasers

• dna tests

• chemical reactions

Tags

NGSS.MS-LS1-1

What are 2 structures surround the outside of a cell?

• Nucleus

• cell membrance

• mitochondria

• cell wall

The functions of individual cells and the functions of multicellular organisms are similar. Your digestive system is responsible for the breakdown of food. Which of these organelles has a similar function to the digestive system?

• nucleus

• golgi complex

• lysosome

• mitochondria

Tags

NGSS.MS-LS1-7

A group of students collect a sample of pond water and make slides of the pond water to observe with a microscope. They are able to see several single-cell organisms on their slides. List 2 things the students might notice about these organisms. 

• They rely on other cells for food.

• They reproduce through cell division.

• They each provide their own protection.

• They are able to move about on their own.

• They are able to perform only one function.

Tags

NGSS.MS-LS1-1

Which of the following should be included in a model of a eukaryotic cell? Select all that apply.

• nucleus

• cytoplasm

• mitochondria

• cell membrane

Tags

NGSS.MS-LS1-2

Which of the following should be included in a model of a prokaryotic cell? Select all that apply.

• nucleus

• cytoplasm

• mitochondria

• cell membrane

Tags

NGSS.MS-LS1-2

Cells can be visualized using two different models: two dimensional (2D) and three dimensional (3D). Which of the following would be found in a 2D model?

• shows a simple illustration of the cell

• shows the actual shape of the different cell parts

• shows the location of the cell within the organism

• can be moved around to see the cell from different angles

Tags

NGSS.MS-LS1-2

Cells can be visualized using two different models: two dimensional (2D) and three dimensional (3D). Which of the following would be found in a 2D model?

• shows a simple illustration of the cell

• shows the actual shape of the different cell parts

• shows the location of the cell within the organism

• can be moved around to see the cell from different angles

Tags

NGSS.MS-LS1-2

Val’s teacher gave them an unlabeled microscope slide of some cells and asked them to identify whether the cells were plant cells or animal cells. The diagram shows one of the cells that Val saw on their slide. Val concluded that the cells were plant cells. Which of the following could be used as proof that they are plant cells?

• the cells have chloroplasts

• the cells have no nucleus

• the cells have DNA

• the cells have a cell wall