Cellular Biochemistry BIOC 1020 Exam
Questions and Answers 100% Solved
What do all cells (prokaryotic and eukaryotic) have as some similar
structural components? - ✔✔1. genetic material in the form of
chromosomes,
2. a membrane bound lipid bilayer that separates the inside of the cell from
the outside of the cell,
3. ribosomes that are responsible for protein synthesis.
What are the four classes of biomolecules that are present in all cell types?
- ✔✔1. lipids
2. proteins
3. nucleic acids
4. carbohydrates
What is a cell in relation to a factory? - ✔✔A chemical factory that designs,
imports, synthesizes, uses, exports and degrades a variety of chemicals
(lipids, proteins, nucleic acids and carbohydrates).
1
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
,What are two things a cell MUST do? - ✔✔(1) Must sense the amount of
raw and finished chemicals it has available
(2) Must respond to its own and external needs by increasing or shutting off
production.
Define biochemistry. - ✔✔branch of science that explores the chemical
processes within a cell.
What does the chemistry of the cell allow for? - ✔✔- the ability to sense
and respond to changes in the surroundings
- a high degree of complexity and organization
- the extraction, transformation, and systematic use of energy to create and
maintain structures and to do work
- the interactions of individual components to be dynamic and coordinated
-a capacity for fairly precise self-replication while allowing enough change
for evolution
What is focused on in biochemistry? - ✔✔The chemical logics behind the:
(1) initiation and acceleration of reactions
(2) organization and specificity of metabolism and signaling
(3) storage and transfer of information and energy
2
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
, Photosynthesizing organisms such as green and purple bacteria, plants
cyanobacteria, algae get there energy from where? - ✔✔Electromagnetic
radiation
All biochemical needs from the biosphere come
from_______________________________________ and
__________________________________. - ✔✔1. chemical elements
2. salts and molecules
Chemicals from the biosphere are usually found where? - ✔✔In the lower
regions of the atmosphere, the hydrosphere (total water on planet) and the
upper parts of the lithosphere (outer layer of the earth).
What are the fundamental components of biochemistry and bioenergetics?
- ✔✔electrons, protons and energy
When do covalent bonds occur? - ✔✔When a pair of electrons is shared
between the nuclei of atoms or ions.
The ____ and ____ orbitals of electrons closest to the nuclei of
______,_____, _____ and ______are those most frequently involved in
biochemical bonds, reactions and molecule formation. - ✔✔1. The s and p
orbitals
2. C (Carbon), H (Hydrogen), O (Oxygen) and N (Nitrogen)
3
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
Questions and Answers 100% Solved
What do all cells (prokaryotic and eukaryotic) have as some similar
structural components? - ✔✔1. genetic material in the form of
chromosomes,
2. a membrane bound lipid bilayer that separates the inside of the cell from
the outside of the cell,
3. ribosomes that are responsible for protein synthesis.
What are the four classes of biomolecules that are present in all cell types?
- ✔✔1. lipids
2. proteins
3. nucleic acids
4. carbohydrates
What is a cell in relation to a factory? - ✔✔A chemical factory that designs,
imports, synthesizes, uses, exports and degrades a variety of chemicals
(lipids, proteins, nucleic acids and carbohydrates).
1
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
,What are two things a cell MUST do? - ✔✔(1) Must sense the amount of
raw and finished chemicals it has available
(2) Must respond to its own and external needs by increasing or shutting off
production.
Define biochemistry. - ✔✔branch of science that explores the chemical
processes within a cell.
What does the chemistry of the cell allow for? - ✔✔- the ability to sense
and respond to changes in the surroundings
- a high degree of complexity and organization
- the extraction, transformation, and systematic use of energy to create and
maintain structures and to do work
- the interactions of individual components to be dynamic and coordinated
-a capacity for fairly precise self-replication while allowing enough change
for evolution
What is focused on in biochemistry? - ✔✔The chemical logics behind the:
(1) initiation and acceleration of reactions
(2) organization and specificity of metabolism and signaling
(3) storage and transfer of information and energy
2
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
, Photosynthesizing organisms such as green and purple bacteria, plants
cyanobacteria, algae get there energy from where? - ✔✔Electromagnetic
radiation
All biochemical needs from the biosphere come
from_______________________________________ and
__________________________________. - ✔✔1. chemical elements
2. salts and molecules
Chemicals from the biosphere are usually found where? - ✔✔In the lower
regions of the atmosphere, the hydrosphere (total water on planet) and the
upper parts of the lithosphere (outer layer of the earth).
What are the fundamental components of biochemistry and bioenergetics?
- ✔✔electrons, protons and energy
When do covalent bonds occur? - ✔✔When a pair of electrons is shared
between the nuclei of atoms or ions.
The ____ and ____ orbitals of electrons closest to the nuclei of
______,_____, _____ and ______are those most frequently involved in
biochemical bonds, reactions and molecule formation. - ✔✔1. The s and p
orbitals
2. C (Carbon), H (Hydrogen), O (Oxygen) and N (Nitrogen)
3
©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
