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A&P Test 1
chapters 1-4
276
Anatomy
Undergraduate 3
02/02/2009

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Term
Anatomy
Definition
study of structures of the body and their relationships to each other

Term
1. chemical
2. cellular
3. tissues
4. organs
5. organ systems
6. organism
Definition
List the order of the Structure levels of life
Term
Physiology
Definition
study of functions of these body parts
Term
metabolism
Definition
all chemical reactions that occur in the body (characteristic of life)
Term
responsiveness
Definition
adjusting to changes in the environment (characteristic of life)
Term
growth and differentation
Definition
increase in size and/or specialization of cells (characteristic of life)
Term
reproduction
Definition
producing copies of an original cell (characteristic of life)
Term
movement
Definition
can be internal or external (characteristic of life)
Term
metabolism, responsiveness, growth and differentation, reproduction, movement
Definition
List the 5 characteristics of life
Term
food
Definition
fuel and building material (survival need)
Term
oxygen
Definition
necessary for cell respiration to produce energy (survival need)
Term
water
Definition
medium for metabolism (survival need)
Term
pressure
Definition
allows for movement (survival need)
Term
food, oxygen, water, and pressure
Definition
List the 4 survival needs.
Term
homeostasis
Definition
maintenance of a constant internal environment
Term
receptor
Definition
detects change in environment (Homeostatic control mechanism)
Term
control center
Definition
determines the response to that change (homeostatic control mechanism)
Term
effector
Definition
responds to that stimulus or change--> adjusts body (homeostatic control mechanism)
Term
receptor, control center, and effector
Definition
List the 3 homeostatic control mechanisms
Term
negative feedback
Definition
response decreases initial simulus or change
Term
positive feedback
Definition
response will add to that stimulus
Term
chemistry
Definition
the study of matter
Term
matter
Definition
anything that occupies space and has mass
Term
atoms
Definition
smallest unit of matter
Term
Protons, neutrons, and electrons
Definition
What are the 3 subatomic particles of an atom?
Term
energy
Definition
the capacity to do work
Term
work
Definition
moves matter
Term
kinetic energy
Definition
energy in motion
Term
potential energy
Definition
stored energy
Term
chemical energy
Definition
potential energy stored in the bonds of molecules
Term
Adenosine triphosphate (ATP)
Definition
high energy molecule that makes cellular fuel; most fundamental form of chemical energy
Term
elements
Definition
unique substances that can not be broken down into simpler substances; composed of identical building blocks called atoms
Term
atomic number
Definition
the number of protons for a particular atom
Term
chemical bond
Definition
results from attractive forces between atoms
Term
covalent and ionic
Definition
what are the 2 types of chemical bonds?
Term
covalent
Definition
type of chemical bond that is the sharing of electrons
Term
Ionic
Definition
type of chemical bond that is the result of a transfer of electrons
Term
nonpolar covalent bond
Definition
equal sharing of electrons
Term
polar covalent bond
Definition
unequal sharing of electrons
Term
chemical reaction
Definition
occurs when bonds are formed, rearranged, or broken
Term
metabolism
Definition
all chemical reactions that occur in the body
Term
metabolism
Definition
all chemical reactions that occur in the body
Term
Catabolic (breaking down) and anabolic (building)
Definition
What are the 2 types of chemical reactions?
Term
organic compounds
Definition
compounds that contain carbon
Term
Carbohydrates, Lipids, Proteins, and Nucleic acids
Definition
What are the 4 major organic macromolecules found in the human body?
Term
carbohydrates
Definition
sugars and starches
Term
lipids
Definition
fats, oils, and waxes
Term
nucleic acids
Definition
DNA and RNA
Term
Monosaccharides
Definition
simple sugars (smallest); simple chain or ring.
Term
Glucose
Definition
a monosaccharide that has 6 carbon sugar and is a fundamental fuel for our cells
Term
Disaccharides
Definition
2 monosaccharides joined by a glycosidic bond--> An example is sucrose (glucose and fructose)
Term
Polysaccharides
Definition
long chain of simple sugars and storage form of cimple sugars
Term
polysaccharides
Definition
starch in plants and glycogen in animals
Term
1. Readily and easily used source of cellular fuel
2. structural component of the cell (few)- part of building
3. cell identifiers
Definition
What are the 3 functions of carbohydrates?
Term
neutral fats
Definition
Type of lipid composed of fatty acids and glycerol; An example is triglycerides
Term
saturated
Definition
only a simple bond between C of fatty acid chain
Term
unsaturated
Definition
at least one double bond between C of fatty acid chain
Term
Phospholipid
Definition
Type of lipid that is modified triglycerides and one of the fatty acid tails is replaced by phosphate group
Term
Amphipatic
Definition
A phospholipid that has a hydrophilic head and a hydrophobic tail
Term
Steroids
Definition
Flat molecules composed of 4 interlocking rings; An example is cholesterol
Term
1. Structural component of cells
2. fuel
3. chemical messengers
Definition
What are the 3 functions of lipids?
Term
Proteins
Definition
Polymers of amino acids
Term
Amino acids
Definition
building blocks of proteins that are linked by peptide bonds
Term
1. central carbon
2. amino group
3. acid group
4. R group (gives its identity)
Definition
What are the 4 parts of amino acids?
Term
1. Primary
2. Secondary
3. Tertiary
4. Quaternary
Definition
What are the 4 levels of the protein structure?
Term
Primary
Definition
Level of protein structure that is a sequence of amino acids
Term
Secondary
Definition
Level of protein structure that is the interaction of amino acids in close proximity such as the alpha helix and pleated sheet
Term
Tertiary
Definition
Level of the protein structure that is the shape of the entire chain of amino acids (how they act with the environment)
Term
Quaternary
Definition
Level of protein structure that is the result of interaction of 2 or more amino acid chains such as hemoglobin
Term
pH and temperature
Definition
What 2 things can alter a protein's shape?
Term
1. Catalyst
2. Form of structural components
3. carriers
4. Movement
5. Identifiers
Definition
What are the 5 functions of proteins?
Term
Nucleic acids
Definition
Polymers of nucleotides. Examples are RNA and DNA
Term
Nucleotides
Definition
building blocks of nucleic acids that are lonked by phosphodiester bonds
Term
Phosphate group, Pentose sugar, and Nitrogenous Base
Definition
What are the 3 components of nucleotides?
Term
Pentose sugar
Definition
The ribose in RNA and the deoxyribose in DNA
Term
Purine
Definition
A nitrongenous base of adenine and guanine
Term
Pyrimidines
Definition
A nitrogenous base of cytosine, thymine, and uracil
Term
Provides information for protein synthesis and directs all metabolic functions
Definition
What are the functions of nucleic acids?
Term
pH
Definition
The measure of H+ concentration in a solution
Term
Neutral
Definition
pH=7
Term
Basic/alkaline
Definition
pH > 7
Term
Acidic
Definition
pH < 7
Term
Buffers
Definition
molecules that regulates pH
Term
Cytology
Definition
the study of the structure and functions of cells
Term
Somatic cells
Definition
cells that make up the whole body
Term
Sex cell
Definition
repoductive cells
Term
Differentation
Definition
specialization of cells
Term
Extracellular fluid (ECF) or interstitial fluid
Definition
a watery medium that a typical somatic cell is surrounded by
Term
Plasma membrane, cytoplasm, nucleus
Definition
What are the 3 components of a cell?
Term
Plasma membrane
Definition
the cell membrane
Term
Cytoplasm
Definition
cytosol and organelles
Term
Nucleus
Definition
the control center of the cell
Term
Cytosol, organelles, inclusions
Definition
What are the 3 compents of the cytoplasm?
Term
cytosol
Definition
gel-like fluid that is mostly water and dissolved proteins, salts, and other solutes
Term
Organelles
Definition
"little organs" of the cell--> either membranous or non-membranous
Term
Inclusions
Definition
insoluable material suspended in the cytosol
Term
Non-membranous organelles
Definition
organelles that lack membranes
Term
Cytoskeleton
Definition
The internal scaffolding of the cell and a network of protein structures found in non-membrous organelles
Term
Microfilaments, intermediate filaments, and microtubules
Definition
What are the 3 types of filaments found in all cells?
Term
Microfilaments
Definition
Filament composed of actin subunits,involved in motility, shape of cell, and anchoring structures to membrane
Term
Intermediate Filaments
Definition
made of different proteins and has tough, strong, fibers that are insoluble
Term
Microtubules
Definition
The primary component of the cytoskeleton made of tubulin subunits that gives strength and rigidity. It also anchors major organelles and is involved in moving organelles around the cell and forms structural components of other organelles
Term
Thick filaments
Definition
special cytoskeleton component found in muscle cells that interacts with actin to cause contraction
Term
Centrioles
Definition
paired organelle composed of microtubules; direct unit of DNA during cellular division
Term
Centrosome
Definition
The cytoplasm surrounding the centrioles
Term
Cilia
Definition
Hairlike, motile extensions of the cell composed of microtubules and are usually in large numbers on 1 xposed surface. It moces secretions or fluids across the surface of the cell
Term
Basal body
Definition
anchors the cilium in the membrane
Term
Flagellum
Definition
Structurally similar to the cilia but longer. Usually 1 per cell and moves the entire cell. Only human cell with it is sperm.
Term
Ribosome
Definition
Composed of proteins and RNA and is the workbench of protein synthesis. It consists of 2 subunits that only become associated during protein synthesis
Term
Fixed ribosome
Definition
Type of ribosome that is attatched to endoplasmic reticulum
Term
Free ribosome
Definition
type of ribosome in the cytoplasm
Term
Microvilli
Definition
Short extensions of the cell that increases the surface area for absorption
Term
Membranous Organelles
Definition
surrounded by own membrane
Term
Endoplasmic Reticulum (ER)
Definition
A network of membranes connected to the nucleus and is involved in protein, lipid, and carb syntheis. IT stores materials and neutralized drugs and toxins because of different enzymes
Term
Rough ER (RER)
Definition
has fixed ribosomes and is where proteins are made
Term
Smooth ER (SER)
Definition
Type of ER that lacks fixed ribosomes
Term
Golgi Apparatus
Definition
Flattened membranous discs stacked together and is part of the intracellular membraine network. It communicates with other structures of the cell such as the ER and plasma membrane.
Term
1. Synthesize and package secretions (vesicles)
2. renews and modifies the plasma membrane
3. Packages material for use inside the cell (ex. lisosome)
Definition
What are the 3 functions of the golgi apparatus?
Term
Mitochondria
Definition
The power house of the cell and the site of the majority of ATP prodution. It has a double membrane structure and the inner membrane is folded. The very center is known as the matrix.
Term
Cellular respiration
Definition
The process in which energy held in the bonds of macromolecules is used to produce ATP and involves arobic respiration
Term
1. Glycolysis
2. TCA cycle
3. Oxidative Phosphorylation
Definition
What are the 3 steps for cellular respiration?
Term
Glycolysis
Definition
Step during cellular respiration that occurs in the cytoplasm where one glucose molecule is broken down into 2 pyruvate molecules. A net yield of 2 ATP is produced because 4 were produced and 2 were used. Doesn't require anaerobic respiration.
Term
TCA cycle
Definition
Step of cellular respiration that occurs in the matric of the mitochondria and each of the pyruvate from the glycolysis step is broken dwon to produce ATP, carbon dioxide, and electron carriers. The result is 2 ATP are produced meaning there is a total of 4 ATP after this step.
Term
Oxidative Phosphorylation
Definition
The step in cellular respiration where electrons are passed down the ETC (electron transport system) releasing energy used to make ATP. Oxygen is the final accpeter of the electrons which produces water and gives about 32 ATP. The total ATP after this step is 36.
Term
Lysosomes
Definition
Vesicles filled with digestive enzymes manufactured at the golgi.
Term
Lysosome
Definition
Their function is the digestion of particles and defense againt pathogens
Term
Apoptosis
Definition
cell death--> lysosomes break open and digest the cell
Term
Peroxisomes
Definition
Enzymes used to detoxify alcohol and hydrogen peroxides and are numerous in the liver.
Term
catalase
Definition
common enzyme found that breaks down hydrogen peroxide
Term
Nucleus
Definition
The control center of cellular operations that determines the characteristics of the cell determining the types of proteins produced by the cell
Term
Nuclear envelope
Definition
seperates nuclear contents from cytoplasm
Term
Nuclear pores
Definition
allows for communications between the cytoplasm and the nucleus
Term
Nucleoplasm
Definition
fluid content of the nucleus
Term
Nucleolus
Definition
dark staining structure in the nucleus and is the site of the initial ribosome assembly
Term
DNA
Definition
the genetic material in the nucleus
Term
Chromatin
Definition
Form of DNA; genetic material during non-divisional phases; DNA molecules and associated proteins appear grain
Term
Chromosomes
Definition
Form of DNA; visibile structures composed of DNA, proteins, and highly organized into individual structures present during the divisional phases
Term
Chromosomes
Definition
vehicle of genetic transmission that can be replicated or non-replicated
Term
Sister chromatids
Definition
2 chromatids that make up a replicated chromatid
Term
Diploid
Definition
Number somatic cell. Each spieces has their own amount and humans have 46
Term
Haploid
Definition
Half the diploid number; the number of chromosomes in a gamete
Term
Cell cycle
Definition
life cycle of a cell
Term
Interphase
Definition
Non-dividing phase of the cell cycle where cell growth and DNA replication occurs (S phase)- DNA synthesis
Term
Mitosis
Definition
Diploid cell divides to form 2 diploid cells
Term
Meiosis
Definition
1 diploid cell divides to produce haploid cells (takes place in sex cells)
Term
1. Prophase
2. Metaphase
3. Anaphase
4. Telophase
Definition
What are the 4 stages of Mitosis?
Term
Prophase
Definition
Phase of mitosis where chromatin condenses, nuclear envelope and nucleolus disappear, centrioles migrate to the poles, and spindle fibers organize
Term
Metaphase
Definition
Phase during mitosis where chromosomes move to the metaphase plate
Term
Anaphase
Definition
Phase of mitosis where chromatids seperate and move to the poles
Term
Telophase
Definition
Phase of mitosis where nuclear envelopes form around the new nucleus, the nucleolus reappears, chromosomes uncoil, and spindle fibers disappear
Term
Cytokinesis
Definition
division of the cytoplasm
Term
1. phsyical isolation
2. regulation of exchange
3. sensitivity
4. structural suppor
Definition
What are the 4 functions of the plasma membrane?
Term
Physical isolation
Definition
Funtion of plasma membrane that seperates the cell's contents form the ECF
Term
Sensitivity
Definition
Function of the plasma membrane that allows the cell to respond to changes in the environment
Term
Regulation of exchange
Definition
Function of the plasma membrane that allows exchange bewtween the ECF and the cytoplasm
Term
Structural support
Definition
Function of the plasma membrane that creates the outerboundary
Term
Plasma membrane
Definition
bilayer of phospholipids with associated proteins and carbohydrates
Term
Phospholipids
Definition
Amphipathic and form bilayer in aqueous solutions and are most of the surface of the plasma membrane
Term
Cholesterol
Definition
stabilize the position of the phospholipids of the plasma membrane
Term
Membrane proteins
Definition
determine function of membrane (specializes membrane)
Term
Integral proteins
Definition
Protein that is part of the plasma membrane
Term
Peripheral proteins
Definition
proteins attatched to the inner/outer plasma membrane
Term
Enzyme protein
Definition
A type of membrane protein that catalizes reactions that occur at the membrane
Term
Receptor protein
Definition
A type of membrane proteins that is a molecule that receives another molecule
Term
Carrier protein
Definition
A type of membrane proteins that moves substances across the membrane (transports)
Term
Channel protein
Definition
A type of membrane protein that provides a passageway across the membrane (type of transport)
Term
Membrane carbohydrates
Definition
Only on the outer surface of the plasma membrane and usually associated with a protein or lipid forming glycoproteins or glycolipids. Forms a glycocalyx
Term
1. Lubrication
2. Anchoring
3. movement
4. Identifiers
Definition
What are the 4 functions of membrane carbohydrates?
Term
Membrane permeability
Definition
determines what enters or leaves the cell
Term
Selective permeable
Definition
Permits the free passage of some substances (hydrophobic molecules) and restricts the passage of others (hydrophyllic molecules) depending on if it is chemically the same.
Term
Diffusion, Carrier-mediated, vesicular
Definition
What are the 3 categories of transport?
Term
Diffusion
Definition
Movement of a substance from an area of high concentration to an area of lower concentration (passive)- substances move down a concentration gradient
Term
Osmosis
Definition
Diffusion of water ;water moves from lower solute concentration to higher solute concentration
Term
Osmontic pressure
Definition
measure of the tendency of a solution to take up water when seperated from pure water by a selectively permeable membrane
Term
Tonicity
Definition
Describes the concentration of solutes of a solution relative to some other solution
Term
Isotonic
Definition
Has the same solute concentration and doesn't visablly affect the cell
Term
Hypertonic
Definition
Higher solute concentration (shrinks)
Term
Hypotonic
Definition
lower solute concentration (swells)
Term
Carrier-mediated transport
Definition
substance binds to a carrier protein and is moved across the membrane
Term
Faciliated diffusion
Definition
diffusion of a solute across a membrane with the help of transport proteins (passive)
Term
Active transport
Definition
requires the input of energy; transport protein pumps molecules across a membrane and moves the colute against its concentration gradient
Term
Vesicular transport
Definition
bulk transport across the membrane by the formation or release of membrane-bound vessicles
Term
Exocytosis
Definition
transport out of the cell
Term
Endocytosis
Definition
transport into the cell
Term
Pinocytosis
Definition
Endocytosis of a liquid (drink)
Term
Phagocytosis
Definition
Endocytosis of a solid (eat)
Term
Histology
Definition
study of tissues
Term
Tissue
Definition
collection of specialized cells that perform a relatively limited number of functions
Term
Epithelial, Connective, Muscle, Neural
Definition
What are the 4 basic types of tissues in the human body?
Term
Epithelial tissue
Definition
Type of tissue that includes epithelia and glands, covers exposed surfaces, lines internal passageways and chambers, and forms glands
Term
Cellularity, polarity, attachment, avascularity, and regeneration
Definition
What are the 5 characteristics of epithelial tissue?
Term
Cellularity
Definition
A characteristic of epithelial tissue when cells are packed tightly together
Term
Polarity
Definition
A characteristic of epithelial tissue when the cells have 2 surfaces that are either apical or basal
Term
Attachment
Definition
A characteristic of epithelial tissue in which the basal surface is attached teo the basal lamina (basement membrane)
Term
Avascularity
Definition
A characteristic of epithelial tissue of lacking blood vessels
Term
Avascularity
Definition
A characteristic of epithelial tissue of lacking blood vessels
Term
Rengeneration
Definition
A characteristic of epithelial tissue when cells divide quickly and have continuous replacement of lost or damaged cells
Term
Physical protection
Definition
A function of epithelial tissue that protects against abrasion, dehydration, and destruction by chemical or biological agents
Term
Controls permeability
Definition
A function of epithelial tissue in which everything that enters the body must pass through epithelial lining
Term
Intercellular communications
Definition
Cells of epithelium are specialist at intercellular connections. It is important so cells can "stick" together physically, work in unison, and communicate with each other
Term
Adhesions and Communication
Definition
What are the 2 types of communication junctions?
Term
Adhesions
Definition
Type of communication junction that contains intercellular cement, tight junctions, and desmosomes
Term
Communication
Definition
Type of communication junction what contains gap junctions
Term
Gap junctions
Definition
Plasma membrane proteins interlock adjacent cell membranes. This channel proteins allow molecules to pass between adjacent cells and allows cells to share a cytoplasm and act as 1 cell
Term
The number of layers of cells or shape of exposed cells
Definition
What is the classification of epithelial tissue based on?
Term
Simple layering
Definition
Type of layering with a single layer of cells, doesn't afford mechanical protection, and is found in areas of absorption
Term
Stratified layering
Definition
Type of layering where there is more than 1 layer of cells and does afford mechanical protection
Term
Pseudostratified layering
Definition
Type of layering where all the cells are attached to the basement membrane but not all cells extend to apical surface
Term
Squamous
Definition
A shape that is thin and irregular shaped
Term
Cuboidal
Definition
A cell that is hexagonal or cube shaped
Term
Columnar
Definition
A cell that is tall and hexagonal shaped
Term
Glands
Definition
Tissues that secrete something
Term
Endocrine glands
Definition
Glands that release secretions into the blood stream, lack ducts, and produce hormones
Term
Exocrine glands
Definition
A gland that discharges secretion into epithelial surface using ducts
Term
Merocrine
Definition
Mode of secretion where the secretions are packed in vesicles and leave thorugh exocytosis
Term
Apocrine
Definition
Mode of secretion in which the secretions are retained in the cell and released when portions of the cell are sloughed off
Term
Holocrine
Definition
Mode of secretion when secretions accumulate in the cell and is released when the cell ruptures and dies (the whole cell is lost)
Term
Specialized cells
Definition
The living component of cells that give the connective tissues their identity
Term
Extracellular protein fibers and ground substance
Definition
What 2 things are found in the matrix of the cell?
Term
1. Sructure
2. Transport
3. Protection
4. Storage
5. Defense
Definition
What are the 4 functions of connective tissues?
Term
Fibroblast
Definition
The most abundant cell type that is produced in the matrix and found in every type of connective tissue proper
Term
Macrophages
Definition
Big cells that engulf debri and pathogens
Term
Adipocytes
Definition
Fat cells
Term
Collagen, Reticular, and Elastin
Definition
What are the 3 types of protein fibers in connective tissue proper?
Term
Mensenchymal cells
Definition
Uninfrientiated cells
Term
Melanocytes
Definition
produces melanin
Term
Mast cells
Definition
Cells that stimulate inflamation
Term
Lymphocytes
Definition
white blood cells (defense cells)
Term
Microphages
Definition
Small cells that engulf things
Term
Collagen
Definition
The most common type of protein fiber that is strong and flexible
Term
Reticular
Definition
A protein fiber that is similar to collagen but shorter and thinner
Term
Elastin
Definition
A eleastic and rare protein fiber
Term
Ground substance
Definition
A dense substance in the matrix that has the consistency of maple syrup and slows the spread of pathogens
Term
Loose connective tissue
Definition
Type of connective tissue proper that provides cushioning and fills the space between organs (packing material). Examples are adipose and reticular tissues.
Term
Dense connective tissue
Definition
Type of connective tissue proper that gets most of if volume from protein fibers and can be either regular or irregular
Term
Regular dense connective tissue
Definition
Type of dense connective tissue that has protein fibers that are oriented in one direction
Term
Irregular dense connective tissue
Definition
Type of dense connective tissue that has interwoven fibers that protects from forces in all different directions
Term
Membranes
Definition
Covers surfaces of the body and is usually compoased of epithelial and connective tissue
Term
Mucus membrane
Definition
Type of membrane that lines cavities that communicate with the outside, contains glands that secrete mucus, and provides protection
Term
Serious membrane
Definition
Type of membrane that lines closed cavities and covers organs in the closed cavities. It is made of parietal and visceral, and prodides lubrication that reduces friction
Term
Cutaneous membrane
Definition
Membrane for skin
Term
Synovial membrane
Definition
Type of membrane that is only connective tissue, lines movable joints, and provides lubrication
Term
Fluid Connective Tissue
Definition
Type of connective tissue that consists mainly of liquid matric (blood and lymph)
Term
Supporting connective tissue
Definition
Type of tissue that provides strong framework for the body. The matrix consists of fibers, ground substance, and sometimes deposits of insoluable calcium salts. (bone- osseous and cartilage- chondro)
Term
It provides movement by showing contraction
Definition
What is the main feature of muscle tissue?
Term
Skeletal, cardiac, and smooth
Definition
What are the 3 types of muscle tissue?
Term
Skeletal
Definition
Type of muscle tissue that is striated and voluntary
Term
Skeletal
Definition
Type of muscle tissue that is striated and voluntary
Term
Cardiac
Definition
Type of muscle tissue that is striated and involuntary. It is only found in the heart
Term
Smooth
Definition
Type of muscle tissue that is non-straited and involuntary. It is found in hollow muscles and vessels
Term
Ability to conduct electrical signals (communication tissue)
Definition
What is the main feature of neural tissue?
Term
Neurons and neuroglia (glial) cells
Definition
What are the 2 types of neural cells?
Term
Neurons
Definition
Conductive cells that are functional cells of the nervous tissue
Term
Neuroglia (glial) cells
Definition
Supporting cells to neurons
Term
Tissues
Definition
What level comes before the organ level of stucture?
Term
Ventral
Definition
What is the term that refers to the front of the body?
Term
Carbon
Definition
What do all molecules contain?
Term
Equal sharing of electrons
Definition
What does a nonpolar covalent bond result from?
Term
Monosaccharides
Definition
What are the building blocks (momomers) for polysaccharides?
Term
Unsaturated
Definition
If a triglyceride has double bonds between carbons of the fatty acids it is said to be what?
Term
R group
Definition
Which of the following is not part of an nucleotide?
Term
Extracallular fluid
Definition
What is the watery medium that surrounds a cell known as?
Term
Cell
Definition
What is the basic structural and functional unit of the human body?
Term
Negative
Definition
In ________ feedback, the initial stimulus produces a response that decreases the stimulus.
Term
Interphase
Definition
The stage in a cell's life cycle in which the cell performs its normal functions and prepares for division is called what?
Term
nucleus
Definition
Where is the cell's DNA located?
Term
Smooth endoplasmic reticulum
Definition
Where does the synthesis of lipids take place?
Term
Mitochondria
Definition
Where is most of the ATP required to power cellular operations produced?
Term
Cell wall
Definition
What terms is not used to define the structure that seperated the contents of a human cell from its surrounding medium?
Term
Diffusion
Definition
The movement of oxygen from an area of high concentration to an area of low concentration is an example of what?
Term
Plasma membrane
Definition
Composed of a bilayer of lipids
Term
Cells with large numbers of mitochondria have a high energy demand
Definition
What does the fact that some cells contain large numbers of mitochondria while others have relatively few or none suggest?
Term
Chromatic
Definition
What are the loose network of fibers formed by chromosomes in cells that aren't dividing known as?
Term
Somatic
Definition
What are all of the cells of the body except the repoductive cells?
Term
Multinucleated
Definition
Cells that have more than 1 nucleus such as skeletal muscle fiber
Term
Anucleated
Definition
Cells have that no nucleus like red blood cells
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