LSU BIOL 1001 Chapter 4 Vocabulary
2026 Exam Questions with 100% Correct
Answers | Latest Update
cell theory - 🧠 ANSWER ✔✔The scientific theory stating that every living
organism is made up of one or more cells; cells are the functional units of
all organisms; and all cells arise from preexisting cells.
diffusion - 🧠 ANSWER ✔✔The net movement of solute particles from a
region of high solute concentration to a region of low solute concentration,
driven by a concentration gradient; may occur within a fluid or across a
barrier such as a membrane.
, plasma membrane - 🧠 ANSWER ✔✔The outer membrane of a cell,
composed of a bilayer of phospholipids in which proteins are embedded.
cytoplasm - 🧠 ANSWER ✔✔All of the material contained within the plasma
membrane of a cell, exclusive of the nucleus.
cytosol - 🧠 ANSWER ✔✔The fluid portion of the cytoplasm; the substance
within the plasma membrane exclusive of the nucleus and organelles.
cytoskeleton - 🧠 ANSWER ✔✔A network of protein fibers in the cytoplasm
that gives shape to a cell, holds and moves organelles, and is typically
involved in cell movement.
deoxyribonucleic acid (DNA) - 🧠 ANSWER ✔✔A molecule composed of
deoxyribose nucleotides; contains the genetic information of all living cells.
ribonucleic acid (RNA) - 🧠 ANSWER ✔✔A molecule composed of ribose
nucleotides, each of which consists of a phosphate group, the sugar ribose,
and one of the bases adenine, cytosine, guanine, or uracil; involved in
converting the information in DNA into protein; also the genetic material of
some viruses.
2026 Exam Questions with 100% Correct
Answers | Latest Update
cell theory - 🧠 ANSWER ✔✔The scientific theory stating that every living
organism is made up of one or more cells; cells are the functional units of
all organisms; and all cells arise from preexisting cells.
diffusion - 🧠 ANSWER ✔✔The net movement of solute particles from a
region of high solute concentration to a region of low solute concentration,
driven by a concentration gradient; may occur within a fluid or across a
barrier such as a membrane.
, plasma membrane - 🧠 ANSWER ✔✔The outer membrane of a cell,
composed of a bilayer of phospholipids in which proteins are embedded.
cytoplasm - 🧠 ANSWER ✔✔All of the material contained within the plasma
membrane of a cell, exclusive of the nucleus.
cytosol - 🧠 ANSWER ✔✔The fluid portion of the cytoplasm; the substance
within the plasma membrane exclusive of the nucleus and organelles.
cytoskeleton - 🧠 ANSWER ✔✔A network of protein fibers in the cytoplasm
that gives shape to a cell, holds and moves organelles, and is typically
involved in cell movement.
deoxyribonucleic acid (DNA) - 🧠 ANSWER ✔✔A molecule composed of
deoxyribose nucleotides; contains the genetic information of all living cells.
ribonucleic acid (RNA) - 🧠 ANSWER ✔✔A molecule composed of ribose
nucleotides, each of which consists of a phosphate group, the sugar ribose,
and one of the bases adenine, cytosine, guanine, or uracil; involved in
converting the information in DNA into protein; also the genetic material of
some viruses.
