8 Cell theory and organelles - Week 2

What is the body system that defends against pathogens and infections?

• Immune system

• Inflammation

• Vaccine

• Antibiotic

What is a substance that fights infections by interfering with the life processes of bacteria?

• Algae

• Vaccine

• Antifungul

• Antibiotic

Who discovered that plants are made of cells?

• Hans Janssen

• Robert Hooke

• Mattias Schleiden

• Theodor Schwann

Which type of cells do not have a nucleus?

• Prokaryotic Cells

• Eukaryotic Cells

• Both Prokaryotic and Eukaryotic Cells

• None of the above

What is the function of the cell membrane?

• Surrounds and protects the contents of the cell

• Releases energy from food molecules

• Stores wastes and substances the cell cannot use right away

• Captures light energy from the Sun to produce glucose

What is the jelly-like fluid in which internal organelles float?

• DNA

• Ribosomes

• Cytoplasm

• Cell wall

Which structure gives plant cells a regular-like box shape?

• Cell membrane

• Cell wall

• Nucleus

• Vacuoles

Which organelle converts glucose (chemical energy) to usable energy for cellular processes.

• Vacuoles

• Mitochondria

• Chloroplasts

• Vesicles

Where are chloroplasts found in plants?

• Leaves and green stems

• Cell membrane

• Nucleus

• Animal Cells

What are small sacs that transport materials and sometimes help things to enter and exit the cell?

• Vesicles

• Ribosomes

• Chloroplasts

• Vacuoles