The Cell Flashcards
Basic living unit of all organisms
Cell
specialized structure within the cells
Organelles
Contains the cell’s genetic material
Nucleus
The living material surrounding the nucleus; and contains many organelles
Cytoplasm
Encloses the cytoplasm and serves a bounday between the inside and outside.
*Semi Permeable
Cell Membrane
Site of Protein synthesis
Ribosomes and Rough endoplasmic reticulum
Site of Lipid synthesis; participates in detoxification
Smooth Endoplasmic Reticulum
Modifies Protein structure and PACKAGES proteins in secretory vesicles
Golgi Apparatus
Contains materials produced in the cell; formed by the Golgi Apparatus
*membrane-bound sac that transports or stores materials
Secretory Vesicles
Contains enzymes that DIGEST material taken to the cell
*membrane bound vesicles formed by the Golgi Apparatus
*Intracellular digestive system
Lysosomes
Site of aerobic respiration and the major site of ATP syhthesis
*Powerhouse of the cell
Mitochondria
main energy source for
most chemical reactions
within the cell
Adenosine Triphosphate (ATP)
A part of the mitochondria’s inner membranes that have NUMEROUS FOLDS called?
Cristae
consist of proteins that support
the cell, hold organelles in place
and enable the cell to change
shape.
- microtubules, microfilaments
intermediate filament
Cytoskeleton
project from the surface
of the cell; capable of moving
*Move substances over the surfaces of certain cells
Cilia
have a structure
similar to that of cilia but are
much longer and they usually
occur only one per cell.
*Propels for sperm cells
Flagella
specialized
extensions of the cell membrane
that are supported by
microfilament
*Increase surface area of certain cells
Microvilli
A function of the cell where the chemical reactions that occur within cells are referred to as metabolic reactions.
Cell Metabolism
A function of a cell where the different cells of the body SYNTHESIZE various types of molecules, including proteins, nucleic acids,
and lipids.
Synthesis of Molecules
A function of a cell where cells produce and RESPOND to chemical andelectrical SIGNALS that allow them to communicate with one another.
Communication
Most cells contain a complete
copy of all the genetic information of the individual. This genetic information ultimately determines the structural and functional characteristics of the cell.
Reproduction and inheritance
Specializwd body cells that are responsible for transmitting genetic information to the next generation
*Sex cells
Gametes
movement of a solute from an area
of higher concentration to an area
of lower concentration within a
solvent. At equilibrium, the
distribution of molecules is uniform
*Does not require ATP
Diffusion
The diffusion of water across a semi permeable membrane such as the cell membrane fro a
region of higher water concentration to one of lower water concentration.
*Does not require ATP
Osmosis
cell will swell
Hypotonic Solution
neither shrinks or swell
Isotonic Solution
shrinkage of cell or crenation
Hypertonic Solution
move large, water-soluble molecules or electrically charged ions across the cell membrane
Carrier molecule
carrier-mediated transport
process that moves substances
into or out of cells from a higher
to a lower concentration of that
substance.
Facilitated Diffusion
carrier-mediated process that
moves substances across the cell
membrane from regions of
lower concentration to those of
higher concentration against a
concentration gradient.
Active Transport
uses the energy of one
substance moving down its
concentration gradient to move
another substance across the
cell membrane.
- co transport-both substances
move in the same direction;
countertransport- they move in
opposite directions
Secondary Active Transport
Uptake of material through the cell membrane by the formation of a vesicle.
*Movement into the cell
Endocytosis
Mediated endocytosis
Receptor
cell eating solid particles are ingested
Phagocytosis
much smaller vesicles are formed and contain liquid rather than particles
*Cell Drinking
Pinocytosis
Movement out of the cell
Exocytosis
Bounded by nuclear envelope and nuclear pores
- contains 23 pairs of
chromosomes consisting of DNA
and protein
Nucleus
loosely coiled chromosome
Chromatins
diffuse bodies with no
surrounding membrane that are
found within the nucleus.
Nucleoli
small membrane-bound vesicles
containing enzymes that break
down fatty acids, amino acids,
and HYDROGEN PEROXIDE.
Peroxisomes
break down PROTEINS in the cytoplasm
Proteasomes
specialized zone of cytoplasm close to the nucleus, where MICROTUBULE FORMATION occurs.
Centrosome
cylindrical organelle
compose of nine triplets; each
triplet consists of three parallel
microtubules joined together.
*Facilitates the movement of chromoses during cell division
Centrioles
compose structural and MOTOR ELEMENTS in the cell, and they serve as the catalysts for virtually every biochemical reaction that occurs in living things
Protein
Great nutritional value and are directly involved in the chemical processes essential for life.
Amino Acids
the molecule that carries genetic information for the development and functioning of an organism.
DNA (Deoxyribonucleic Acid)
structurally the same as the DNA, Three important kinds for protein in living things.
synthesis (mRNA, tRNA,).
RNA (Ribonucleic Acid)
a molecule that contains the biological
instructions that make each species unique. DNA, along with the instructions it contains, is passed from adult organisms to their offspring during reproduction
Nucleotides
the process by which the
information in a strand of DNA is
copied into a new molecule of
MESSENGER RNA (mRNA).
Transcription
the process by which a cell
makes proteins using the genetic
information carried in messenger
RNA (mRNA). The mRNA is made
by copying DNA, and the
information it carries tells the cell
how to link amino acids together
to form proteins
Translation
2 major phase of life cycle
Interphase
Cell division
Replication of DNA
Interphase
formation of daughter cells from a single parent cell
Cell Division
formation of new cells necessary for growth and tissue repair.
Mitosis
sex cells necessary for reproduction
Meiosis
Each cell contain_________Chromosome, except for sex cells
46
containing two complete sets of chromosomes, one from each parent
Diploid
each chromosomes consist of two chromatids JOINED at the centromere
Prophase
chromosomes ALIGN at the center of the cell
Metaphase
Chromatids SEPARATE at the centromere and migrate to opposite poles
Anaphase
the two new nuclei assume their normal structure and cell division is completed, producing two new daughter cells.
Telophase
the process by which CELLS develop with specialized structures and function
Differentiation
The plasma membrane is the outermost component of a cell. It functions as a boundary separating the substances INSIDE the cell.
Intracellular
It functions as a boundary separating the substances OUTSIDE the cell.
Extracellular
An electrical charge difference across the plasma membrane
- is a result of the cell’s regulation
of ion movement into and out of the cell.
Membrane Potential
The predominant lipids of the plasma membrane
Phosphilipids
Cholesterol
Phospholipids readily assemble to form a_______, a DOUBLE LAYER of phospholipid molecules, because they have a polar (charged)
Lipid Bilayer
heads are exposed to the aqueous extracellular and intracellular fluids of the cell.
*Polar
*Water Loving❤️
Hydrophilic
tails face one another in the interior of the plasma membrane
*Non-polar
*Water Fearing🙈
Hydrophobic
concept of the plasma membrane suggests
that the plasma membrane is neither RIGID nor STATIC in structure but is HIGHLY FLEXIBLE and can change its shape and composition
through time.
Fluid-mosaic model
is the other major lipid in the plasma membrane
It is INTERPERSED among the phospholipids and
accounts for about one-third of the total lipids in the plasma membrane.
Cholesterol
are cell SURFACE MOLECULES that allow cells to
identify other cells or other molecules
Marker Molecules
proteins with attached carbohydrates
Glycoproteins
lipids with attached carbohydrates
Glycoliphids
are proteins that attach cells to other cells
Cadherins
are proteins that attach cells to EXTRACELLULAR MOLECULES.
Integrins
are integral proteins that allow ions or molecules
to move from one side of the plasma membrane to the other.
Transport Proteins
are one or more integral membrane proteins
arranged so that they form a tiny channel through the plasma membrane.
Channel Proteins
are integral membrane proteins
that move ions or molecules from one side of the plasma membrane to the other.
Carrier Proteins
In an isotonic solution, the shape of the cell
remains constant, maintaining its internal tension or tone, a condition called.
Tonicity
are small fibrils, about 8 nm
in diameter, that form bundles, sheets, or networks in the cytoplasm. These filaments have a spiderweb-like appearance.
Actin Filaments or Microfilaments
are protein fibers about 10nm in diamater that provide mechanical strength to cells.
Intermediate Filaments
is an enzyme that synthesizes the complementary
RNA molecule from DNA.
RNA polymerase
is the division of the cell’s CYTOPLASM
to produce two new cells.
Cytokinesis