WorksheetsScience Exam-Fourth IV Quarter
Total questions: 15
Worksheet time: 11mins
What is the cell membrane?
surrounds a cell, holding the parts of the cell together. It allows needed materials, such as sugar, water, and oxygen to enter the cell.
is the part of the cell that contains chromosomes. Chromosomes are made of materials including a chemical called DNA (deoxyribonucleic acid).
surrounds the cell membrane. The cell wall is stiff, unlike the thin cell membrane. Cell walls give plant cells extra support and protection.
use the energy in sunlight to turn water and carbon dioxide into oxygen and sugar. Plant cells use oxygen and sugar for respiration. Chloroplasts give plants their green color.
What is the nucleus?
the part of the cell that contains chromosomes. Chromosomes are made of materials including a chemical called DNA (deoxyribonucleic acid).
surrounds the cell membrane. The cell wall is stiff, unlike the thin cell membrane.
use the energy in sunlight to turn water and carbon dioxide into oxygen and sugar. Plant cells use oxygen and sugar for respiration. Chloroplasts give plants their green color.
surrounds a cell, holding the parts of the cell together. It allows needed materials, such as sugar, water, and oxygen to enter the cell.
What means (deoxyribonucleic acid)?
(a)
Complete:
___use the energy in sunlight to turn water and carbon dioxide into oxygen and sugar.
Chloroplast
cell walls
nucleus
cell membrane
Complete
A tough ___ surrounds the cell membrane.
cell walls
Chloroplast
nucleus
cell membrane
Complete:
Your body has about (a) different kinds of cells.
Write the type of cell:
"The shape of nerve cells makes them great for communicating signals between the brain and the rest of the body."
(a)
Write the type of cell:
"Flat cells such as skin cells, often join or overlap to cover a surface. They work something like the shingles on a building’s roof."
(a)
What is a tissue?
(a)
What is an organ?
(a)
What is an organ system?
(a)
Choose the correct answer:
"Skin cells form in many layers. The top section alone has about..."
25 layers of skin cells
45 layers of skin cells
30 layers of skin cells
15 layers of skin cells
Complete:
"Together ____ bones make up the skeletal system."
about 200
about 300
about 245
about 325
Complete:
"The skull is made of several bones that work together _____."
to protect the brain
to protect the stomach
to protect the heart
to protect the head
Complete:
"Muscles are organs that work together to move your body. You have about____"
640 muscles that you control
545 muscles that you control
700 muscles that you control
835 muscles that you control
