Why may a cracker taste sweet if you chew it for a long time?

A cracker may taste sweet due to the breakdown of starches into sugars (glucose) by saliva enzymes.

Chewing releases a chemical that makes all foods taste sweet.

The sweetness comes from the salt used in the cracker recipe.

Crackers are made from sweet ingredients like sugar and honey.

Villi are finger like pieces that stick out in the small intestine that help with nutrient absorption due to increased surface area.

Villi are cells in the liver that detoxify substances.

Villi are muscles in the stomach that help in digestion.

Villi are blood vessels that transport oxygen throughout the body.

How do villi help nutrient absorption?

Villi increase surface area to help with nutrient absorption.

Villi secrete mucus to aid in digestion.

Villi transport nutrients directly into the bloodstream.

Villi produce digestive enzymes for nutrient breakdown.

What real world adaptation is similar to the villi in the small intestine?

Fennec foxes have large ears to help with heat diffusion

A deer that blends into the bushes

Birds having sharp claws to help pick up their prey

Chemical digestion of lipids to fatty acids

What are body stores?

Body stores are the collection of energy and nutrients in the body, mainly as fat and glycogen.

Body stores refer to the organs responsible for digestion.

Body stores are the muscles used for physical activity.

Body stores are the fluids that circulate in the bloodstream.

What happens if you don't eat for 2 days?

Not eating for 2 days can lead to fatigue, irritability, dizziness, and weakness as the body uses stored energy.

You will gain energy and feel more active.

Your body will start to produce more muscle mass.

You will experience an increase in appetite and cravings.

What is the respiratory system?

The respiratory system is responsible for the exchange of gases (oxygen and CO2) between the body and the environment.

The respiratory system is involved in the production of hormones.

The respiratory system circulates blood throughout the body.

The respiratory system is responsible for digestion and nutrient absorption.

What is cellular respiration?

Cellular respiration is the process by which cells convert glucose and oxygen into energy, carbon dioxide, and water.

Cellular respiration occurs only in the presence of sunlight.

Cellular respiration is the process of photosynthesis in plants.

Cellular respiration is the breakdown of proteins into amino acids.

What is the point of us doing cellular respiration?

The point of doing cellular respiration is to produce energy (ATP) for cellular activities.

To eliminate waste products from the cell.

To produce carbon dioxide for the atmosphere.

Fatigue is a state of extreme tiredness.

As seen in our experiment where you blew bubbles into an Erlenmeyer Flask and the solution changed color - Do you breathe more or less when exercising and why?

You breathe more when exercising because you are doing more activity so your cells need more oxygen.

You breathe less when exercising because you are "winded" and struggling to breathe.

Your breathing rate stays the same during exercise.

You breathe less during exercise because it is harder to breathe when doing activity.

What happens to glucose levels as you exercise?

Glucose levels generally decrease as muscles use it for energy during exercise.

Glucose levels fgo up and down randomly without any relation to exercise.

Glucose levels increase as muscles store it during exercise.

Glucose levels remain unchanged regardless of exercise intensity.

What could help keep your energy up during exercise?

A piece of candy since it is high in simple, added sugars which is good for quick bursts of energy.

Pasta because it is full of complex carbs which we use for our main energy source.

A piece of steak because it's filled with protein for building muscle.

Avocados because they are filled with fat for long term energy stoarge.

Why do you get "out of breath" when you exercise?

You get 'out of breath' because your muscles need more oxygen than your body can supply during exercise.

You get 'out of breath' because your heart is beating too slowly.

You get 'out of breath' due to dehydration during exercise.

You get 'out of breath' because your body is too cold.

What is the circulatory system?

The circulatory system is the system that circulates blood through the body.

The circulatory system is the part of the body that processes food and nutrients.

The circulatory system is a network of nerves that controls movement.

The circulatory system is responsible for digestion and metabolism.

Arteries transport oxygenated blood away from the heart to the body.

Arteries store excess blood for later use.

Arteries are responsible for filtering blood.

Arteries carry deoxygenated blood to the heart.

Arteries store excess blood for later use.

Arteries are responsible for filtering blood.

Arteries transport oxygenated blood away from the heart to the body.

What do capillaries do?

Allow materials such as oxygen and nutrients to diffuse in and out of cells.

Arteries are responsible for filtering blood.

Arteries transport oxygenated blood away from the heart to the body.

Arteries carry deoxygenated blood to the heart.

What do red blood cells do?

Fight off infections and bacteria

What do platelets do?

Fight off infections and bacteria

What do white blood cells do?

Fight off infections and bacteria

Unit 2 Summary

Authored by Krista Carcaterra

Science

6th - 8th Grade

NGSS covered

Used 6+ times

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37 questions

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MATCH QUESTION

1 min • 1 pt

Match the molecule to what they are digested into.

Simple Sugar (glucose)

Proteins

Amino Acids

Lipids/Fats

Fatty Acids

Carbohydrates

MATCH QUESTION

1 min • 1 pt

Match the macromolecules to their function.

Long term energy, insulation, protection

Proteins

Build muscle, enzymes, and antibodies

Lipids/Fats

Main source of energy

Carbohydrates

MATCH QUESTION

1 min • 1 pt

Match the macromolecule to the example it is most known for.

Oils

Carbohydrate

Crackers

Lipids

Meat

Proteins

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Does glucose need to be broken down before it is used?

No, because glucose is a big molecule so it has a lot to be used.

Yes, glucose must be broken down before it is used.

No, because glucose is small enough to diffuse and be used without breaking down.

Yes, because Glucose needs to be converted into glycogen before use.

Tags

NGSS.MS-LS1-7

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Does starch need to be broken down before it is used?

No, because starch is a big molecule so it has a lot to be used.

Yes, starch must be broken down before it is used because it is too big to diffuse and be used.

No, because starch is small enough to diffuse and be used without breaking down.

Yes, because starch needs to be converted into glycogen before use.

Tags

NGSS.MS-LS1-7

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is going to give you the most amount of energy?

Glucose because it is easy to diffuse into the blood stream

Complex carbohydrates because it has the most energy since it is used for long term energy

Proteins so you can have big muscles

Nucleic Acids because they are in everything

Tags

NGSS.MS-LS1-7

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of relationship is shown by this graph?

Inverse/Indirect

Direct

Tags

NGSS.MS-PS3-1

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Unit 2 Summary

Match the molecule to what they are digested into.

Match the macromolecules to their function.

Match the macromolecule to the example it is most known for.

Does glucose need to be broken down before it is used?

Does starch need to be broken down before it is used?

What is going to give you the most amount of energy?

What type of relationship is shown by this graph?

What type of relationship is shown by this graph?

What is the relationship between variables called when the variables are doing the same thing? (As one variable increases the other is also increasing OR as one variable decreases the other variable is also decreasing)

What is the relationship between variables called when the variables are doing the opposite? (As one variable increases the other is decreasing)

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