2. 1. The endosymbiotic theory proposes that
mitochondria and chloroplasts share a
common ancestry with:
- a) Archaea - b) Bacteria- - c) Viruses
- d) Protists
2. During which geological era did the first
eukaryotic cells likely appear?
- a) Archean - b) Proterozoic - c) Paleozoic
- d) Mesozoic
3. 3. What is the defining feature of
eukaryotic cells that distinguishes them
from prokaryotic cells?
- a) Presence of a nucleus
- b) Circular DNA
- c) Cell wall
- d) Flagella
4. 4. According to the endosymbiotic
theory, which organelles are thought to
have originated from free-living bacteria?
- a) Nucleus and endoplasmic reticulum
- b) Ribosomes and lysosomes
- c) Mitochondria and chloroplasts
- d) Golgi apparatus and vacuoles
5. 5. What is the primary function of
the nucleus in a eukaryotic cell?
- a) Energy production
- b) Storage of genetic material
- c) Protein synthesis
- d) Cellular respiration
6. 6. The first eukaryotic cells likely
evolved from:
- a) Archaea
- b) Bacteria
- c) Viruses
- d) Prokaryotic cells
7. 7. What cellular structure is unique
to plant cells and not found in
animal cells?
- a) Centrioles
- b) Chloroplasts
- c) Lysosomes
- d) Flagella
8. 8. The process of endosymbiosis is supported by
evidence such as:
- a) Structural differences between mitochondria and
bacteria.
- b) Genetic differences between mitochondria and
bacteria.
- c) Structural similarities, genetic evidence, and
similarities in replication.
- d) Lack of similarities in replication.
9. 9. Which organelle is responsible for
breaking down cellular waste and foreign
substances in a eukaryotic cell?
a) Nucleus
b) Lysosome
c) Mitochondria
d) Peroxisome
10. 10. What organelle is responsible for
maintaining the integrity of the cell and
controlling the passage of substances in
and out of the cell?
A. Cell membrane
B. Nucleus
C. Endoplasmic reticulum
D. Peroxisome
11. 11. Which organelle is associated with
the production of ATP and is often
referred to as the "powerhouse" of
the cell?
A. Nucleus
B. Golgi apparatus
C. Mitochondria
D. Vacuole
12. 12. What is the primary role of the
vacuole in plant cells?
A. Storage of genetic material
B. Storage of water, nutrients, and
waste products
C. Synthesis of lipids
D. Protein synthesis
13. 13. Which organelle is responsible for
synthesizing proteins in a eukaryotic
cell?
a. Nucleus
b. Mitochondria
c. Ribosome
d. Golgi apparatus
14. 14. What is the primary function of
chloroplasts in plant cells?
a. Synthesizing proteins
b. Storing genetic material
c. Photosynthesis
d. Breaking down cellular waste
15. 15. In a school's electrical room
representing a eukaryotic cell, which
organelle would be analogous to
generating power for the entire building?
a. Nucleus
b. Ribosome
c. Mitochondria
d. Golgi apparatus
