Science Semester 1 Review Part 1

Which of the following examples includes only chemical changes that occur in the digestive process?

• Absorption of nutrients by villi in the small intestines

• Chewing and swallowing food

• Recycling of water from dissolved food back into the body

• Reaction of saliva, stomach acid, bile, and pancreatic juices with food

Tags

NGSS.MS-PS1-2

• I. Chewing and mixing of food and saliva

• II. Movement of food through peristalsis

• III. Reaction of food with hydrochloric acid

• IV. Interaction of food with bile

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is an example of a physical change that occurs during digestion?

• Digestive enzymes in the stomach break down proteins into amino acids.

• Saliva in the mouth converts starches into simple sugars.

• Pancreatic enzymes break down fats into fatty acids.

• Teeth grind and tear food into smaller pieces in the mouth.

The roots of the plant in the diagram above are exhibiting which behavior?

• Autotropism

• Hydrotropism

• Geotropism

• Phototropism

Which of the following demonstrates an organ providing a force?

• The eye transmits information to the brain.

• The heart contracts and expands to move blood.

• The kidney filters waste from blood.

• The skin protects other organs from damage.

Which part of the plant above demonstrates the greatest amount of turgor pressure?

• Part A

• Part B

• Part C

• Part D

Tags

NGSS.MS-LS2-1

In a germinating seed, the downward growth of roots and upward growth of leaves and stems are the plant's responses to —

• sunlight

• gravity

• osmosis

• water

Tags

NGSS.MS-LS1-5

What stimulus is the seedling responding to that causes theroots and stem to grow in opposite directions?

• water

• light

• gravity

• temperature

Tags

NGSS.MS-LS1-5

What must happen for a seed to emerge from the soil as a seedling?

• The soil must erode and expose the seed to the sunlight.

• An animal searching for food must disrupt the soil.

• The seed must exert a force to push a shoot up through the soil

• Another plant must die to make room for the new plant.

Tags

NGSS.MS-LS2-1

Seeds that are planted upside down are still able to grow into mature plants. Which explanation best explains this phenomenon?

• The roots change into branches, and the branches turn into roots.

• The roots grow toward the force of gravity, and the shoots grow away.

• The plant will become a smaller version of a mature plant.

• Roots always grow toward the dark, and shoots grow toward the light.

Tags

NGSS.MS-LS1-5