Biol 1201 Exam 1 (gregg) With
Exact Questions and Answers
Latest 2025-2026
plasma membrane - Correct Answer-The membrane at the boundary of every
cell that acts as a selective barrier, thereby regulating the cell's chemical
composition.
Ribosomes - Correct Answer-complexes that make proteins; free in cytosol or
bound to rough ER or nuclear envelope
Golgi apparatus - Correct Answer-active in synthesis, modification, sorting,
and secretion of cell products
Lysosome - Correct Answer-digestive organelle where macromolecules are
hydrolyzed, and autophagy
Mitachondrion - Correct Answer-organelle where cellular respiration occurs
and most ATP is generated
Cytoskeleton - Correct Answer-reinforces cell's shape; functions in cell
movement; components are made of protein. Includes: Microfilaments,
Intermediate filaments, Microtubules.
Endoplasmic Reticulum - Correct Answer-network of membranous sacs and
tubes; active in membrane synthesis and other synthetic and metabolic
processes; has rough (ribosome-studded) and smooth regions
Rough ER - Correct Answer-protein synthesis
Smooth ER - Correct Answer-lipid synthesis
calcium ion storage
poison detoxification
Nucleolus - Correct Answer-nonmembranous structure involved in production
of ribosomes; a nucleus has one or more nucleoli
Chromatin - Correct Answer-material consisting of DNA and proteins; visible in
a dividing cell as individual condensed chromosomes
, cell wall - Correct Answer-outer layer that maintains cell's shape and protects
cell from mechanical damage; made of cellulose, other polysaccharides, and
protein
Chloroplast - Correct Answer-photosynthetic organelle; converts energy of
sunlight to chemical energy stored in sugar molecules
central vacuole - Correct Answer-prominent organelle in older plant cells;
storage, breakdown of waste products, hydrolysis of macromolecules;
enlargement of vacuole major mechanism of plant growth.
Part complete
The innermost electron shell of an atom can hold up to _____ electrons. -
Correct Answer-2
Which of these relationships is true of an uncharged atom? - Correct Answer-
The number of protons is equal to the number of electrons
What determines the types of chemical reactions that an atom participates in?
- Correct Answer-the number of electrons in the outermost electron shell
What type of bond is joining the two hydrogen atoms? - Correct Answer-
covalent
A(n) _____ refers to two or more atoms held together by covalent bonds. -
Correct Answer-molecule
This atom can form up to _____ single covalent bond(s) - Correct Answer-4
A(n) _____ bond joins these two oxygen atoms. - Correct Answer-double
covalent
Part complete
What is the atomic number of an atom that has 6 protons, 6 neutrons, and 6
electrons? - Correct Answer-6
Part complete
Which of these refers to atoms with the same atomic number but different
atomic masses? - Correct Answer-these atoms are isotopes
Fluorine's atomic number is 9 and its atomic mass is 19. How many neutrons
does fluorine have? - Correct Answer-10
An uncharged atom of boron has an atomic number of 5 and an atomic mass of
11. How many protons does boron have? - Correct Answer-5
Exact Questions and Answers
Latest 2025-2026
plasma membrane - Correct Answer-The membrane at the boundary of every
cell that acts as a selective barrier, thereby regulating the cell's chemical
composition.
Ribosomes - Correct Answer-complexes that make proteins; free in cytosol or
bound to rough ER or nuclear envelope
Golgi apparatus - Correct Answer-active in synthesis, modification, sorting,
and secretion of cell products
Lysosome - Correct Answer-digestive organelle where macromolecules are
hydrolyzed, and autophagy
Mitachondrion - Correct Answer-organelle where cellular respiration occurs
and most ATP is generated
Cytoskeleton - Correct Answer-reinforces cell's shape; functions in cell
movement; components are made of protein. Includes: Microfilaments,
Intermediate filaments, Microtubules.
Endoplasmic Reticulum - Correct Answer-network of membranous sacs and
tubes; active in membrane synthesis and other synthetic and metabolic
processes; has rough (ribosome-studded) and smooth regions
Rough ER - Correct Answer-protein synthesis
Smooth ER - Correct Answer-lipid synthesis
calcium ion storage
poison detoxification
Nucleolus - Correct Answer-nonmembranous structure involved in production
of ribosomes; a nucleus has one or more nucleoli
Chromatin - Correct Answer-material consisting of DNA and proteins; visible in
a dividing cell as individual condensed chromosomes
, cell wall - Correct Answer-outer layer that maintains cell's shape and protects
cell from mechanical damage; made of cellulose, other polysaccharides, and
protein
Chloroplast - Correct Answer-photosynthetic organelle; converts energy of
sunlight to chemical energy stored in sugar molecules
central vacuole - Correct Answer-prominent organelle in older plant cells;
storage, breakdown of waste products, hydrolysis of macromolecules;
enlargement of vacuole major mechanism of plant growth.
Part complete
The innermost electron shell of an atom can hold up to _____ electrons. -
Correct Answer-2
Which of these relationships is true of an uncharged atom? - Correct Answer-
The number of protons is equal to the number of electrons
What determines the types of chemical reactions that an atom participates in?
- Correct Answer-the number of electrons in the outermost electron shell
What type of bond is joining the two hydrogen atoms? - Correct Answer-
covalent
A(n) _____ refers to two or more atoms held together by covalent bonds. -
Correct Answer-molecule
This atom can form up to _____ single covalent bond(s) - Correct Answer-4
A(n) _____ bond joins these two oxygen atoms. - Correct Answer-double
covalent
Part complete
What is the atomic number of an atom that has 6 protons, 6 neutrons, and 6
electrons? - Correct Answer-6
Part complete
Which of these refers to atoms with the same atomic number but different
atomic masses? - Correct Answer-these atoms are isotopes
Fluorine's atomic number is 9 and its atomic mass is 19. How many neutrons
does fluorine have? - Correct Answer-10
An uncharged atom of boron has an atomic number of 5 and an atomic mass of
11. How many protons does boron have? - Correct Answer-5
