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BIO 103
BIO 103 Exam 2 Questions with Correct
Verified Answers Latest Update
(2025/2026) Guaranteed Pass
1. What encloses the nucleus, separating it from the cytoplasm
- Double membrane, each membrane consists of a lipid bilayer
- Continuous with the endoplasmic reticulum: nuclear envelope
2. What regulate the entry and exit of molecules from the nucleus:
nuclear pores
3. What is a condensed region of chromatin where ribosome
synthesis occurs: nucleolus
4. What are complexes made of ribosomal rna and protein - rrna is
synthesized in the nucleolus: ribosomes
5. ribosomes build proteins in two locations:
1. In the ____________ (free ribosomes)
BIO 103
,2. On the outside of the __________________________ or the
nuclear envelope (bound ribosomes): cytosol, endoplasmic
reticulum
6. What consists of
- Nuclear envelope
- Endoplasmic reticulum
- Golgi apparatus
- Lysosomes
- Vacuoles
- Plasma membrane: endomembrane system
7. The components of the endomembrane system are either
continuous or connected via transfer by _________________:
vesoicles
8. What regulates protein traffic and performs metabolic
functions: endomembrane system
9. What accounts for more than half of the total membrane in
many eukaryotic cells
, 3
BIO 103
- Continuous with the nuclear envelope
- "biosynthetic factory": endoplasmic reticulum
10. Which distinct region of the er lacks ribosomes: smooth
er
11. Which distinct region of the er has a surface studded
with ribosomes: rough er
12. Which er has bound ribosomes, which secrete
glyocoporteins (proteins covalently bonded to carbs)
- Distributes transport vesicles, secretory proteins surrounded by
membranes
- Membrane factory for the cell: rough er
13. Which er synthesizes lipids
- Detoxifies drugs
- Stores calcium ions: smooth er
14. What is part of the endomembrane system in the
cytoplasm that packages porteins into membrane-bound
BIO 103
, vesicles inside the cell before the vesicles are sent to their
destination: golgi apparatus
15. What is the membranous sac of enzymes that can digest
macromolecules
- digestive compartments "the recyclers": lysosomes
29. Lysosomal enzymes work best in the ________________
environment inside the lysosome: acidic
30. What engulfs (phagocytized) a potentially pathogenic
bacterium and then fuses with a lysosome within the cell to
destroy the pathogen: macrophage
31. What are large vesicles derviced from the er and golgi
- Perform a variety of functions in different kinds of cells
- Maintencance compartments: vacuoles
32. ___________ vacuoles are formed by phagocytosis: food
33. _______________ vacuoles, found in many freshwater protists,
pump excess water out of cells: contracticle
BIO 103
BIO 103 Exam 2 Questions with Correct
Verified Answers Latest Update
(2025/2026) Guaranteed Pass
1. What encloses the nucleus, separating it from the cytoplasm
- Double membrane, each membrane consists of a lipid bilayer
- Continuous with the endoplasmic reticulum: nuclear envelope
2. What regulate the entry and exit of molecules from the nucleus:
nuclear pores
3. What is a condensed region of chromatin where ribosome
synthesis occurs: nucleolus
4. What are complexes made of ribosomal rna and protein - rrna is
synthesized in the nucleolus: ribosomes
5. ribosomes build proteins in two locations:
1. In the ____________ (free ribosomes)
BIO 103
,2. On the outside of the __________________________ or the
nuclear envelope (bound ribosomes): cytosol, endoplasmic
reticulum
6. What consists of
- Nuclear envelope
- Endoplasmic reticulum
- Golgi apparatus
- Lysosomes
- Vacuoles
- Plasma membrane: endomembrane system
7. The components of the endomembrane system are either
continuous or connected via transfer by _________________:
vesoicles
8. What regulates protein traffic and performs metabolic
functions: endomembrane system
9. What accounts for more than half of the total membrane in
many eukaryotic cells
, 3
BIO 103
- Continuous with the nuclear envelope
- "biosynthetic factory": endoplasmic reticulum
10. Which distinct region of the er lacks ribosomes: smooth
er
11. Which distinct region of the er has a surface studded
with ribosomes: rough er
12. Which er has bound ribosomes, which secrete
glyocoporteins (proteins covalently bonded to carbs)
- Distributes transport vesicles, secretory proteins surrounded by
membranes
- Membrane factory for the cell: rough er
13. Which er synthesizes lipids
- Detoxifies drugs
- Stores calcium ions: smooth er
14. What is part of the endomembrane system in the
cytoplasm that packages porteins into membrane-bound
BIO 103
, vesicles inside the cell before the vesicles are sent to their
destination: golgi apparatus
15. What is the membranous sac of enzymes that can digest
macromolecules
- digestive compartments "the recyclers": lysosomes
29. Lysosomal enzymes work best in the ________________
environment inside the lysosome: acidic
30. What engulfs (phagocytized) a potentially pathogenic
bacterium and then fuses with a lysosome within the cell to
destroy the pathogen: macrophage
31. What are large vesicles derviced from the er and golgi
- Perform a variety of functions in different kinds of cells
- Maintencance compartments: vacuoles
32. ___________ vacuoles are formed by phagocytosis: food
33. _______________ vacuoles, found in many freshwater protists,
pump excess water out of cells: contracticle
