Biology sem 1 wk 2

Front

How do carrier proteins facilitate active transport?

Back

Carrier proteins move substances from a low to high concentration.

Front

Which organelle is large in plant cells but small or absent in animal cells?

Back

Vacuole.

Front

What is the final step of aerobic respiration when ATP is created?

Back

The final step is not glycolysis; it is oxidative phosphorylation.

Front

Why is Down syndrome called trisomy 21?

Back

The syndrome results from an extra chromosome 21.

Front

What is the chemical equation for photosynthesis?

Back

6CO2 + 6H2O → C6H12O6 + 6O2.

Front

What is the function of chloroplasts in plant cells?

Back

Chloroplasts are responsible for photosynthesis.

Front

Define osmosis.

Back

Osmosis is the movement of water across a semipermeable membrane from a region of low solute concentration to a region of high solute concentration.

Front

What is the role of mitochondria in cells?

Back

Mitochondria are the powerhouses of the cell, generating ATP through cellular respiration.

Front

What is the difference between prokaryotic and eukaryotic cells?

Back

Prokaryotic cells lack a nucleus and membrane-bound organelles, while eukaryotic cells have both.

Front

What is the purpose of the cell membrane?

Back

The cell membrane regulates what enters and exits the cell, maintaining homeostasis.