BIOD 152 AP2 LAB 4 ACTUAL EXAM PAPER
2026 QUESTIONS WITH SOLUTIONS GRADED
A+
◉ Multicellular (lab 3) Answer: made of many cells
◉ prokaryotic cell (lab 3) Answer: -lack a membrane bound nucleus
-lack membrane bound organelles
-typically unicellular & very small
-includes Bacteria & Archaea
◉ eukaryotic cell (lab 3) Answer: cell that has a nucleus and other
membrane-bound organelles
-ex: plants, fungi, animals, algae
- includes Eukarya
◉ 3 domains of life (lab 3) Answer: Bacteria, Archaea, Eukarya
◉ which domains are more closely related (lab 3) Answer: Archaea
and Eukarya
◉ cell theory (lab 3) Answer: - all organisms are composed of cells
,- cells are the basic living, functioning units of all organisms
- all cells come from pre existing cells
◉ endosymbiotic theory (lab 3) Answer: Eukaryotic cells evolved
from prokaryotic cells
◉ endosymbiotic evidence (lab 3) Answer: - mitochondria &
chloroplast have their own DNA
- both are structurally similar to prokaryotic cells
- both are able to reproduce themselves by a process similar to
prokaryotes
◉ all cells have (lab 3) Answer: DNA, cytoplasm, plasma membrane,
ribosomes
- "Dude, CPR"
◉ methyl blue (lab 3) Answer: stains negatively charged particles in
a cell, such as DNA, RNA, proteins, and phospholipids; makes the
fragments visible
◉ plant cells only have (lab 3) Answer: cell wall and chloroplasts
◉ iodine (lab 3) Answer: reacts with starch to produce a blue-black
color in the cell
, ◉ Why might the cell theory actually be considered a law? (lab 3)
Answer: Cell theory describes a repeated pattern in nature.
◉ You may place _____ in your mouth to see if it alters the reaction
with the stains/indicators. (lab 3) Answer: nothing
◉ TRUE or FALSE: You will lose points if you get any liquid stains on
your lenses. (lab 3) Answer: false
◉ TRUE or FALSE: All specimens for Lab 3 should be viewed and
drawn at 40x, 100x, and 400x. (lab 3) Answer: false
◉ how the endosymbiotic theory explains eukaryotic cell evolution
(lab 3) Answer: 1. Fossil evidence suggests that the first cells were
PROKARYOTES, which leads scientists to believe that EUKARYOTES
evolved from PROKARYOTES
2. During ENDOSYMBIOSIS, one cell takes up another. It is likely that
trough this process, the evolution of EUKARYOTES from
PROKARYOTES occurred in stages
3. For instance, the invagination of the PLASMA MEMBRANE could
explain several of the internal structures of EUKARYOTES, like the
ER and Golgi apparatus
4. Mitochondria and chloroplasts may also have been acquired this
way. If a "host" cell took up a smaller cell that could benefit it by
2026 QUESTIONS WITH SOLUTIONS GRADED
A+
◉ Multicellular (lab 3) Answer: made of many cells
◉ prokaryotic cell (lab 3) Answer: -lack a membrane bound nucleus
-lack membrane bound organelles
-typically unicellular & very small
-includes Bacteria & Archaea
◉ eukaryotic cell (lab 3) Answer: cell that has a nucleus and other
membrane-bound organelles
-ex: plants, fungi, animals, algae
- includes Eukarya
◉ 3 domains of life (lab 3) Answer: Bacteria, Archaea, Eukarya
◉ which domains are more closely related (lab 3) Answer: Archaea
and Eukarya
◉ cell theory (lab 3) Answer: - all organisms are composed of cells
,- cells are the basic living, functioning units of all organisms
- all cells come from pre existing cells
◉ endosymbiotic theory (lab 3) Answer: Eukaryotic cells evolved
from prokaryotic cells
◉ endosymbiotic evidence (lab 3) Answer: - mitochondria &
chloroplast have their own DNA
- both are structurally similar to prokaryotic cells
- both are able to reproduce themselves by a process similar to
prokaryotes
◉ all cells have (lab 3) Answer: DNA, cytoplasm, plasma membrane,
ribosomes
- "Dude, CPR"
◉ methyl blue (lab 3) Answer: stains negatively charged particles in
a cell, such as DNA, RNA, proteins, and phospholipids; makes the
fragments visible
◉ plant cells only have (lab 3) Answer: cell wall and chloroplasts
◉ iodine (lab 3) Answer: reacts with starch to produce a blue-black
color in the cell
, ◉ Why might the cell theory actually be considered a law? (lab 3)
Answer: Cell theory describes a repeated pattern in nature.
◉ You may place _____ in your mouth to see if it alters the reaction
with the stains/indicators. (lab 3) Answer: nothing
◉ TRUE or FALSE: You will lose points if you get any liquid stains on
your lenses. (lab 3) Answer: false
◉ TRUE or FALSE: All specimens for Lab 3 should be viewed and
drawn at 40x, 100x, and 400x. (lab 3) Answer: false
◉ how the endosymbiotic theory explains eukaryotic cell evolution
(lab 3) Answer: 1. Fossil evidence suggests that the first cells were
PROKARYOTES, which leads scientists to believe that EUKARYOTES
evolved from PROKARYOTES
2. During ENDOSYMBIOSIS, one cell takes up another. It is likely that
trough this process, the evolution of EUKARYOTES from
PROKARYOTES occurred in stages
3. For instance, the invagination of the PLASMA MEMBRANE could
explain several of the internal structures of EUKARYOTES, like the
ER and Golgi apparatus
4. Mitochondria and chloroplasts may also have been acquired this
way. If a "host" cell took up a smaller cell that could benefit it by
