Question

section vocabulary
cell membrane a phospholipid layer that covers
cells surface and acts as a barrier between
the inside of a cell and the cells environment
cytoplasm the region of the cell within the
membrane
eukaryote an organism made up of cells
that have a nucleus and membrane - bound
organelles
nucleus in a eukaryotic cell, a membrane - bound
organelle that contains the cells dna
organelle one of the small bodies that
are found in the cytoplasm of a cell and
that are specialized to perform a specific
function
prokaryote a single - celled organism that does
not have a nucleus or membrane - bound
organelles
ribosome a cell organelle where protein
synthesis occurs

1. summarize indicate whether each structure or feature below is found in a

prokaryotic cell, a eukaryotic cell, or both.

1. list what are the three parts of the cell theory?

1. infer could a cell be the size of an elephant? explain your answer.

1. compare how does the location of dna differ in prokaryotic and eukaryotic

cells?

Explanation:

1.

• Cell membrane: Both prokaryotic and eukaryotic cells have a cell membrane as it acts as a barrier.
• Cytoplasm: Present in both. It is the region within the cell membrane where cellular activities occur.
• DNA: Both have DNA. Prokaryotic DNA is in the cytoplasm (not in a nucleus), eukaryotic DNA is in the nucleus (and also in some organelles like mitochondria).
• Ribosomes: Both have ribosomes for protein synthesis.
• Membrane - bound organelles: Only eukaryotic cells have these (like mitochondria, endoplasmic reticulum etc.), prokaryotic cells do not.

The cell theory has three main parts. It is a fundamental concept in biology. The first part states that all living things are made of cells. The second part is that cells are the basic units of structure and function in living things. The third part is that new cells are produced from existing cells.

A cell could not be the size of an elephant. As a cell grows, its surface - area - to - volume ratio decreases. The surface area (cell membrane) is responsible for the exchange of materials (nutrients in, waste out). A very large cell would have too small a surface - area - to - volume ratio to support its metabolic needs. Also, the diffusion of substances within the cell would be too slow to maintain proper cellular function over a large distance.

Answer:

Cell structure or feature	Prokaryotic cell	Eukaryotic cell
Cell membrane	yes	yes
Cytoplasm	yes	yes
DNA	yes	yes
Ribosomes	yes	yes
Membrane - bound organelles	no	yes

2.