cells

These diagrams demonstrate how cells can differ in:

• size and densities

• modes of locomotion

• means of replication

• cell structures

Which structure and function are common to all plants and some protists and distinguish them from all animals?

• chloroplasts that conduct photosynthesis

• mitochondria that conduct photosynthesis

• chloroplasts that conduct cellular respiration

• mitochondria that conduct cellular respiration

Which of the following is true about cells?

• In general, prokaryotic cells do not have a true nucleus or membrane-bound organelles, whereas eukaryotic cells contain both a nucleus and organelles enclosed by membranes.

• In general, eukaryotic cells do not have a true nucleus or membrane-bound organelles, whereas prokaryotic cells contain both a nucleus and organelles enclosed by membranes.

• Both eukaryotic cells and prokaryotic cells always contain both a true nucleus that is well-defined and organelles that are separated from the cytoplasm by membranes.

• Neither prokaryotic cells nor eukaryotic cells ever contain both a true nucleus that is well-defined and organelles that are separated from the cytoplasm by membranes.

Name the cell structure.

Principle site of energy production.

Name the cell structure.

Functions as a processing, packaging and transport centre of carbohydrates, proteins and glycoproteins.

Name the cell structure.

It controls the movement os substances into and out of the cell.

Name the cell structure.

Contains hydrolytic enzymes.

What is the main function of the cell membrane?

• Produce energy for the cell

• Regulate the movement of substances in and out of the cell

• Store genetic information

• Provide structural support to the cell

Which organelle is responsible for producing energy for the cell?

• nucleus

• ribosomes

• mitochondria

• endoplasmic reticulum

What is the basic, functional and structural unit of life?

• CELL

• Red blood cell

• Microorganisms

• Multicellular organisms