Plant cells
This rigid outer layer, made of cellulose, provides structural support to plant cells but is completely absent in animal cells.
What is the Cell Wall?
Because they lack a cell wall, animal cells are often described as having this flexible, irregular shape.
What is Round (or Amorphous)?
Known as the "brain" of the cell, this organelle houses the genetic material (DNA).
What is the Nucleus?
The "brain" of the cell that holds DNA.
What is the nucleus?
The flexible barrier that regulates what enters and exits the cell.
What is the cell membrane (or plasma membrane)?
These green organelles are the site of photosynthesis, coverting sunlight into chemical energy.
What are Chloroplasts?
These barrel-shaped structures play a key role in organizing microtubule assembly during animal cell division.
What are Centrioles?
This double-membraned organelle is the "powerhouse" where ATP is generated through cellular respiration.
What is the Mitochondria?
The double membrane that surrounds the nucleus, punctuated with pores.
What is the nuclear envelope?
Large storage sacs, especially prominent and central in plant cells for maintaining pressure.
What are vacuoles?
This large, fluid-filled sac occupies most of the plant cell's volume and helps maintain turgor pressure.
What is the Large Central Vacuole?
Often called the "suicide bags" of the cell, these organelles contain digestive enzymes and are much more common in animal cells than plant cells.
What are Lysosomes?
This jelly-like substance fills the space between the cell membrane and the nucleus, holding the organelles in place.
What is Cytoplasm?
Found inside the nucleus, this dense region is where ribosomes are produced.
What is the nucleolus?
The "shipping center" that modifies and packages proteins into vesicles.
What is the Golgi apparatus?
Unlike animal cells, which are often rounded, plant cells typically take on this geometric shape due to their cell walls.
What is Rectangular (or Fixed/Square)?
While plants store energy as starch, animal cells store their excess glucose in the form of this complex carbohydrate.
What is Glycogen?
This thin, semi-permeable layer regulates what enters and exits the cell in both plants and animals.
What is the Cell Membrane (or Plasma Membrane)?
The complex of DNA and proteins that condenses to form chromosomes during cell division.
What is chromatin?
This network of protein fibers (microtubules and microfilaments) provides structural support.
What is the cytoskeleton?
These are the pores found in the cell walls of plant cells that allow for transport and communication between adjacent cells.
What are Plasmodesmata?
These specialized junctions in animal cells provide cytoplasmic channels from one cell to an adjacent cell, similar in function to plasmodesmata in plants.
What are Gap Junctions?
This network of protein fibers (including microfilaments and microtubules) provides the internal "scaffolding" for both cell types.
What is the Cytoskeleton?
These small holes in the nuclear membrane allow RNA and proteins to move in and out.
These organelles contain digestive enzymes to break down waste; they are the "garbage disposal."
What are lysosomes?