Cellular Biochemistry Introduction Exam
Questions and Answers 100% Solved
How do environmental factors affect cells? - ✔✔they affect the structure
and function of biological macromolecules
What are 6 environmental factors that affect the cell? - ✔✔1. pH
2. Temperature
3. light (energy)
4. salinity
5.solutes (ions, gases, sugars)
6. denaturing agents and detergents
How does pH affect the cell? - ✔✔pH differences can cause unfolding of
proteins due to amount of hydrogen ions present that can interact with
bonds and disrupt the structure of the molecule
Which bonds are most affected by pH? - ✔✔hydrogen and ionic bonds are
the most sensitive due to the charge nature of pH
1
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
, How does temperature affect the cell? - ✔✔it denatures proteins by
breaking noncovalent bonds, as well as causing slow movement at low
temperatures
Which bonds are most affected by temperature? - ✔✔noncovalent (
hydrogen bonds) and ionic bonds at extremely high temperatures
how does light energy affect the cell? - ✔✔UV light breaks covalent bonds
how does salinity affect the cell? - ✔✔can cause water to leave DNA and
other important parts of the cell via osmosis as well as interacting with
intermolecular interactions and affecting intramolecular forces that allow
molecules to fold properly
How does a high salt concentration affect the cell? - ✔✔The salt disrupts
the positive and negative charges, hindering molecule interaction
how does a low salt concentration affect the cell? - ✔✔can cause
molecules stick together that shouldn't
which chemical bonds are most affected by salinity? - ✔✔hydrogen and
ionic bonds
how do organic solvents, denaturing agents, and detergents affect the cell?
- ✔✔nonpolar solvents cause hydrophobic parts of the protein to flip inside
out and denature
2
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
Questions and Answers 100% Solved
How do environmental factors affect cells? - ✔✔they affect the structure
and function of biological macromolecules
What are 6 environmental factors that affect the cell? - ✔✔1. pH
2. Temperature
3. light (energy)
4. salinity
5.solutes (ions, gases, sugars)
6. denaturing agents and detergents
How does pH affect the cell? - ✔✔pH differences can cause unfolding of
proteins due to amount of hydrogen ions present that can interact with
bonds and disrupt the structure of the molecule
Which bonds are most affected by pH? - ✔✔hydrogen and ionic bonds are
the most sensitive due to the charge nature of pH
1
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
, How does temperature affect the cell? - ✔✔it denatures proteins by
breaking noncovalent bonds, as well as causing slow movement at low
temperatures
Which bonds are most affected by temperature? - ✔✔noncovalent (
hydrogen bonds) and ionic bonds at extremely high temperatures
how does light energy affect the cell? - ✔✔UV light breaks covalent bonds
how does salinity affect the cell? - ✔✔can cause water to leave DNA and
other important parts of the cell via osmosis as well as interacting with
intermolecular interactions and affecting intramolecular forces that allow
molecules to fold properly
How does a high salt concentration affect the cell? - ✔✔The salt disrupts
the positive and negative charges, hindering molecule interaction
how does a low salt concentration affect the cell? - ✔✔can cause
molecules stick together that shouldn't
which chemical bonds are most affected by salinity? - ✔✔hydrogen and
ionic bonds
how do organic solvents, denaturing agents, and detergents affect the cell?
- ✔✔nonpolar solvents cause hydrophobic parts of the protein to flip inside
out and denature
2
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
