Digestive and Circulatory System

Which organ is part of the circulatory system?

• stomach

• lungs

• heart

• mouth

Which organ starts the process of digestion?

• salivary glands

• stomach

• teeth and tongue

• small intestines

Digestion means to (a)   food into smaller substances.

Types of digestion are

• chemical

• physical

• mechanical

• thermal

The digestive system breaks down food into

• water

• sugar

• starch

• chyme

Tags

NGSS.MS-LS1-7

Food broken down into sugar molecules is absorbed into the blood in which organ?

• stomach

• small intestines

• heart

• large intestines

Tags

NGSS.MS-LS1-7

Blood circulates sugar to the

• organs of the body.

• muscles of the body.

• cells of the body.

• bones of the body.

Tags

NGSS.MS-LS1-3

James is given four liquid samples. One sample contains living things, but the other three do not. Each sample appears cloudy, but James cannot see with his unaided eyes what the material is in each sample. He is asked to identify each sample as containing either living or nonliving things.

Which investigation would provide evidence that each sample is living or nonliving?

• James would need to measure the mass of each sample twice. Once to determine the initial mass and then 10 minutes later to see if the mass has changed.

• James would need to observe the samples through a microscope. He would need to see if he could observe cells within the sample.

• James would calculate the chemical energy of each sample. He would then analyze the data to determine which samples have the most chemical energy.

• James would count the number of things they see in each sample. He would use this to see if there are more things in one sample over another.

Tags

NGSS.MS-LS1-1

When sugar enters the cell it is used for

• energy

• growing

• reproducing

• sleeping

Tags

NGSS.MS-LS1-7

The cell membrane is a semi-permeable layer that allow some materials, like sugar and water, to enter or leave the cell.

• True

• False

Tags

NGSS.MS-LS1-2