Quiz: Biology

2. Membrane, This is a thin, flexible skin that surrounds the cell. It acts as a gatekeeper, controlling what comes in and what goes out.
3. These are tiny machines that build proteins. Proteins are necessary for almost everything a cell does. Ribosomes are found in every single type of cell, from simple bacteria to complex humans.
5. Location,Their genetic instructions (DNA) float freely in the cytoplasm instead of being tucked away in a special room.
6. and Vacuoles: These are small sacs used for storing or transporting materials.
7. These are cylinder-shaped structures that help the cell divide when it needs to make more cells.
9. Often called the "powerhouse" of the cell, these organelles turn food into energy (ATP) so the cell can work.
11. Wall: Most of these cells have a tough cell wall outside their membrane for protection.
14. These are the "trash collectors". They use strong chemicals to break down waste and old cell parts. While plants have similar parts, true lysosomes are mostly found in animals.

1. These are green organelles that catch sunlight to make food (sugar) through photosynthesis.
4. Reticulum (ER): This is like an internal highway. The Rough ER helps make proteins, while the Smooth ER makes fats (lipids) and cleans up toxins.
8. Central Vacuole: Plants have one giant water tank that takes up most of their space. It keeps the cell firm so the plant doesn't wilt.
10. This is the "control center" or "brain" of the cell. It stores the DNA and tells the other parts what to do.
11. Wall: Unlike animal cells, which are squishy, plant cells have a rigid cell wall made of cellulose. This helps plants stand up straight.
12. and Cytosol, The cytoplasm is the entire interior of the cell. The cytosol is a jelly-like liquid that fills the space and holds nutrients.
13. Apparatus: This acts like a post office. It takes proteins and fats, packages them, and sends them to the right place.