Question

name:
part 1: background reading
read the information below, then answer the questions that follow.
scientists believe prokaryotes were the first living cells on earth. later, some prokaryotes began living together in a symbiotic relationship, forming more complex cells called eukaryotes - a process known as endosymbiosis.
eukaryotic cells have membrane - bound organelles (like mitochondria and nuclei), which make them more complex and efficient.
both prokaryotes and eukaryotes share four common features:

1. dna
2. plasma membrane
3. cytoplasm
4. ribosomes

part 2: compare and contrast
table 1. key differences between prokaryotes and eukaryotes
feature prokaryotes eukaryotes
nucleus × absent √ present
membrane - bound organelles × none √ present
cell type unicellular mostly multicellular
cell size 0.1 - 5 μm 10 - 100 μm
dna form usually circular linear
example organisms bacteria, archaea animals, plants, fungi, protists
part 3: check your understanding

1. what are the four main structures that all cells (both prokaryotic and eukaryotic) share?
2. where is dna found in prokaryotes?

a. in the nucleus
b. in the cytoplasm (nucleoid region)
c. in the mitochondria

Explanation:

1. The text above lists that both prokaryotes and eukaryotes share DNA, plasma membrane, cytoplasm, and ribosomes.
2. Prokaryotes lack a nucleus. Their DNA is located in the cytoplasm in the nucleoid region.

Answer:

1. DNA, plasma membrane, cytoplasm, ribosomes
2. b. In the cytoplasm (nucleoid region)