Cell Structure and Organization Quiz 3

The cell membrane is a semipermeable membrane which controls substances entering and leaving the cell.

Chloroplasts in the cytoplasm of a plant cell contains chlorophyll pigments which absorb sunlight required for photosynthesis.

1 is the cytoplasm and 4 is the cell membrane. Cell wall (2) gives plant its regular shape and chloroplast (3) is used for photosynthesis.

Structure C is the partially permeable membrane of the plant cell. It controls the substances entering and leaving the plant cell. It allows only small molecules to pass through and prevents the passage of large molecules. Structure A is the cellular cell wall that is fully permeable.

The endoplasmic reticulum transports proteins in a cell. The Golgi body collects and sorts molecules. The mitochondria releases energy via aerobic respiration and the ribosome is responsible for making proteins.

The cell membrane is a selectively permeable membrane which controls the substances entering and leaving the cell. The cell wall is fully permeable which allows all substances to pass through.

All living cells required oxygen to stay alive. Red blood cell does not contain nucleus so that it can store more hemoglobin. Red blood cell has a biconcave shape to increase surface area to volume ratio for faster oxygen exchange while root hair cell has a long and narrow root hair to increase surface area to volume ratio for faster water absorption.

Cells Z are plant cells modified to form xylem tissue which conduct water and mineral salts from the roots to other parts of the plant. W is the red blood cell that absorbs and transport oxygen.

Aerobic respiration takes place in the mitochondria. This process uses up oxygen.

Xylem vessels with thickened walls.