Quiz on Early Cells and Microfossils

What is the meaning of 'anaerobic'?

• Processes that require carbon dioxide for survival.
• A term used for aerobic organisms that need oxygen.
• Relating to organisms that thrive in high oxygen environments.
• Relating to or denoting organisms or processes that do not require oxygen.

In chemosynthesis, what is utilized as a source of carbon for building organic molecules?

• Oxygen

• Nitrogen

• Carbon dioxide

• Methane

What is a 'prokaryote'?

• A prokaryote is a type of virus that infects bacteria.
• A prokaryote is a multicellular organism with a nucleus.
• A prokaryote is an organism that has membrane-bound organelles.
• A prokaryote is a unicellular organism without a nucleus or membrane-bound organelles.

What type of environment would you find archaea bacteria?

• Hydrothermal vents

• Freshwater lakes
• Deserts
• Tropical rainforests

Which of the following is NOT used in photosynthesis?

• Sunlight

• Carbon dioxide

• Oxygen

• Water

Which of the following processes uses the products of photosynthesis?

• Fermentation

• Respiration

• Digestion

• Combustion

What is the damaging byproduct of photosynthesis?

• Carbon dioxide
• Glucose
• Water
• Oxygen

Certain wavelengths of sunlight rearrange oxygen molecules to form ________.

• carbon dioxide (CO₂)

• nitrogen (N₂)

• hydrogen (H₂)

• ozone (O₃)

Eukaryotic cells have their DNA arranged into chromosomes which are housed in the _______ of the cell.

• mitochondria
• cytoplasm
• nucleus
• cell membrane

What is a cytoskeleton?

• The cytoskeleton is a structural framework within cells that supports their shape and organization.
• The cytoskeleton is a fluid that fills the cell and provides nutrients.
• The cytoskeleton is a genetic material that controls cell division.
• The cytoskeleton is a type of organelle that produces energy for the cell.