WorksheetsSCIENCE VIDEO QUIZ
Total questions: 15
Worksheet time: 5mins
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
When we eat carbohydrate-rich food, it is broken down into __________.
carbon
fiber
glucose
starch
______________ is the organelle in a human cell where carbohydrates are broken down in the presence of oxygen to form ATP molecules.
Food vacuole
Mitochondria
Nucleus
Ribosome
Chlorophyll’s most important role in photosynthesis is to __________.
give color to leaves of plants.
reflects light to the surroundings.
trap light to energize electrons.
NONE OF THE ABOVE
_____________ can be found in lettuce, broccoli, and celery while ____________ can be found in potatoes, corn, and rice.
Cellulose, starch
Fiber, protein
Starch, cellulose
Sugar, starch
The raw materials and products of photosynthesis are as follows:
carbon dioxide, oxygen ---> glucose
glucose, water ---> oxygen, carbon dioxide
water, carbon dioxide ---> glucose, oxygen
water, oxygen ---> glucose, carbon dioxide
