Cells

A __________ is the basic structural unit of a living organism.

(a)  

• Cell
• Atom
• Molecule
• Tissue

Which of the following are the three postulates of the cell theory?

• All living things are made up of one cell (unicellular) or more cells (multicellular).

• The cell is the basic unit of life. It is the smallest living thing that has characteristics of a living thing.

• All cells are created from existing cells through cell division.

• Cells have different parts that work together to carry out various cellular activities.

• Animals need food, water, and oxygen to live. Plants need water and sunlight.

This organelle is the control centre of the cell. It stores DNA and genetic information required for cell division and growth.

• Nucleus

• Nucleolus

• Ribosomes

• Golgi Apparatus

This organelle is contained within the nucleus. It is responsible for making ribosomes.

• Nucleus

• Nucleolus

• Lysosomes

• Golgi Apparatus

This organelle is the smallest membrane in the cell and creates proteins. It has been referred to as a "protein factory."

• Nucleus

• Nucleolus

• Ribosomes

• Golgi Apparatus

This organelle process and sorts important proteins and fats in the cell before they are delivered to their next destination.

• Nucleus

• Nucleolus

• Ribosomes

• Golgi Apparatus

This organelle is a network of bubbles and tubes that are either rough or smooth and help to modify and transport proteins.

• Endoplasmic Reticulum

• Cell Membrane

• Cell Wall

• Golgi Apparatus

This organelle is a barrier around the cell. It is semi-permeable, which means it controls the entry and exit of various substances in the cell.

• Endoplasmic Reticulum

• Cell Membrane

• Cell Wall

• Ribosomes

This organelle is a rigid outer layer whose primary purpose is to protect and provide support to the cell.

• Endoplasmic Reticulum

• Cell Membrane

• Cell Wall

• Chloroplast

This organelle contains chlorophyll, which is required for photosynthesis to occur.

• Chloroplasts

• Vacuole

• Mitochondria

• Cytoplasm