Gr5_Science_Unit2_CellsAndMicroorganisms

Based upon plant and animal models, which structure of the cell directs all of the activities of a cell?

• cell membrane

• cytoplasm

• cell wall

• nucleus

Which of the following practices is based on an understanding of microorganisms?

• sliding downhill instead of running

• looking both ways before turning down a street

• wearing heavy clothes in the winter

• washing your hands before cooking

What important function do microorganisms have in an ecosystem?

• They produce food from sunlight and mold.

• They reduce the number of large animals.

• They decompose dead organisms.

• They help to clean the air.

Amanda claims that plant and animal cells have specific structures that perform different jobs for each cell. She believes that plant cells have some specialized structures that animal cells do not have. Which TWO of the following are specialized structures that only plant cells have?

• cytoplasm

• mitochondria

• cell wall

• chloroplasts

Tim and Harold are viewing cells with a microscope because they claim that cells are too small to be observed with the naked eye. Is their statement true or false?

• True

• False

Based upon the cell models, which cell is a plant cell? Which cell is an animal cell?

• A = plant cell

• B = plant cell

• A = animal cell

• B = animal cell

Complete this question offline.

Draw a model of a plant cell and label each part of the cell.

(a)  

Complete this question offline.

Draw a model of an animal cell and label each part of the cell.

(a)  

Compare and contrast how microorganisms can be beneficial or harmful to organisms.

(a)  

Construct an argument to persuade humans to protect themselves from harmful bacteria and explain some steps they may take. Be sure to describe HOW they may protect themselves.

(a)