SCIENCE VIDEO QUIZ

About how many percent of the food that we eat is carbohydrates?

• 40

• 50

• 60

• 70

The gas needed by plants to make their own food is ______________.

• Air

• Carbon dioxide

• Hydrogen

• Oxygen

______________ is the special organelle found only in plant cells.

• Chlorophyll

• Chloroplast

• Mitochondria

• Stomata

Plants take in carbon dioxide through the ____________ and obtain water in roots in order to build carbohydrates.

• cell membrane

• stomata

• chloroplasts

• pores

The number range of chloroplasts found in each plant cell is ___________.

• 10 - 100

• 20 - 100

• 30 - 100

• NONE OF THE ABOVE

Photosynthesis goes through a water-splitting reaction in the presence of __________.

• Carbon dioxide

• Oxygen

• Sunlight

• ALL OF THE ABOVE

An example of a simple carbohydrate is __________.

• cellulose

• glucose

• starch

• sugar

The fiber-containing carbohydrate that the human body cannot break down is __________.

• cellulose

• glucose

• starch

• sugar

Humans and plants are intricately connected because plants give off oxygen that humans need for breathing.

• TRUE

• FALSE

Carbohydrates contain the following elements:

• C, H, N

• C, H, O

• C, C, O, N

• H, O, N