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Biology 1408 Final
n/a
219
Biology
Undergraduate 1
05/05/2011

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Cards

Term
The axon...
Definition
initiates impulses and transmits impulses, generally away from the cell body.
Term
The sodium/potassium pump is primarily responsible for the...
Definition
establishing resting potential.
Term
A nerve impulse, or action potential, is...
Definition
a change in the distribution of positive and negative ions on the outer and inner surfaces of the neuron membrane that opensadjacent channels and propagates its flow.
Term
The point at which voltage gated Na channels open initiating an action potential is called...
Definition
the threshold.
Term
Depolarization during an action potential is primarily due to the movement of...
Definition
Na+ to the inside.
Term
The primary functions of the spinal cord involve...
Definition
reflex actions and communication between the brain and spinal nerves.
Term
A nerve is...
Definition
composed of the long fibers of long axons.
Term
Which part of a simple reflex arc takes the message away from the CNS?
Definition
motor neuron
Term
The membranes that protect the brain and spinal cord are called...
Definition
meninges.
Term
What is NOT a correct association of brain structures and functions?
Definition
limbic system - speech and hearing
Term
Which part of the brain contains highest control centers for the heartbeat, respiration, temperature and thirst?
Definition
hypothalamus
Term

During times of stress, fright, or fear, body systems are primarily under the control of the parasympathetic nervous system.

 

True or False?

Definition
False
Term
What is NOT a correct association of sensory receptors?
Definition
Thermoreceptors - pressure waves sensed as "hearing"
Term
Taste buds and olfactory cells are considered...
Definition
chemoreceptors.
Term
On the retina there is an oval, yellowish area with a depression in which vision for color is the most acute.  This area is called the...
Definition
fovea centralis.
Term
The structure that regulates the size of the opening for light in the eye and is similar to a camera diaphragm, is the...
Definition
iris.
Term
The _________ controls the change in shape of the lens needed for near and far vision.
Definition
ciliary muscle
Term
What is NOT necessary to "see" and object?
Definition
frontal lobe of the cerebrum
Term
The malleus, incus, and stapes are...
Definition
located between the tympanic membrane and the oval window.
Term
What is the correct path of a sound vibration until the signal is sent to the brain?
Definition
auditory canal - tympanic membrane - malleus - incus - stapes - oval window - spiral organ - cochlear nerve
Term
From your understanding of the anatomy of the ear, what is the most likely explanation for a dog's ability to hear higher frequencies (pitch)?
Definition
hair cells and tectorial membrane
Term
The sense of equilibrium is accomplished by hair cells associated with the...
Definition
ampulla and semicircular canals
Term
Our perception of pitch is dependent upon...
Definition
the frequency of incoming sound waves.
Term
What is NOT a function of bones?
Definition
To provide a non-living "concrete" architecture.
Term
The type of bone tissue that has lacunae, concentric circles around osteons (Haversian canals), is found on the outside of all bone is...
Definition
compact bone
Term
In young person who are still developing, a band of cartilege called a _________ remains between the primary ossification center and each secondary ossification center.
Definition
growth plate
Term
What is NOT an association of facial bones?
Definition
zygomatic bones - bridge of the nose
Term
What is NOT part of the pelvic girdle?
Definition
femur
Term
The radius is to the ulna as the...
Definition
fibula is to the tibia.
Term
Classification of joints is primarily based on...
Definition
amount of movement permitted between bones.
Term
In contraction of muscle...
Definition
no filaments change size.
Term
What is the correct order that stimulation encounters structures in triggering a contraction?
Definition
motor nerve - synaptic cleft - sarcolemma - sarcoplasmic reticulum - troponin
Term
In relaxed muscle, calcium is...
Definition
stored in the endoplasmic reticulum.
Term
Skeletal muscles...
Definition
work in antagonistic pairs.
Term
Maximal sustained muscle contraction is called...
Definition
tetanus
Term
What is NOT a function of the urinary system?
Definition
Production of water from oxygen and bicarbonate ions (HCO3)
Term
The tube that transports urine from the kidney to the urinary bladder is called the...
Definition
ureter
Term

Nitrogenous wastes are produced by breakdown of amino acids.

 

 

True or False

Definition
True
Term
The microscopic anatomical unit of excretion found in the kidney is the...
Definition
nephron
Term
What is the correct order an excreted water molecule moves from glomerulus to collecting duct?
Definition
glomerular capsule - proximal convoluted tubule - loop of nephron - distal convoluted tubule
Term

Small molecules move from the glomerular (Bowman's) capsule into the glomerulus.

 

 

True or False

Definition
False
Term

Creatinine production is one of the three steps involved in urine production.

 

 

True or False

Definition
False
Term
Patients with diabetes mellitus have frequent urination and increased thirst because...
Definition
increased glucose in the urine increases its osmolarity and less water is reabsorbed by blood.
Term
Most selective reabsorbtion occurs immediately in the ___________ of the nephron.
Definition
proximal convoluted tubule
Term
Glucose is not normally found in glomerular filtrate but NOT in the urine because...
Definition
glucose is reabsorbed back into the bloodstream.
Term
An antibiotic such as penicillin that is taken orally is soon excreted in the urine.  Since infections last for a short while, what is the best strategy for overcoming this continual loss?
Definition
Take continual doese of penicillin sufficient to maintain it in the bloodstream.
Term
The structure which monitors blood pressure and volume in the kidney is called the...
Definition
juxtaglomerular apparatus
Term
What is NOT a major function of the respiratory tract?
Definition
transferring and extracting nutrients
Term
What is the path of an inhaled air molecule?
Definition
nasal cavity - pharynx - glottis - larynx - trachea - bronchi - bronchioles - alveoli
Term
The type of respiration in which gases are exchanged between the blood and tissue fluid is termed...
Definition
internal respiration
Term

The pharnyx is referred to as vocal chords.

 

 

True or False

Definition
False
Term
Oxygen poor blood becomes oxygen rich blood in the capillary beds of the...
Definition
alveoli
Term
The air that is moved in and out with each normal breath is termed the...
Definition
tidal volume
Term
In a human, puncture of the thoracic wall, but not of the lung itself, will cause...
Definition
collapse of the lung
Term

The diaphragm, when relaxed, will be lowered.

 

 

True or False

Definition
False
Term
Oxygen is transported in blood most efficiently by...
Definition
combining with hemoglobin
Term
By what route does CO2 leave the body?
Definition
pulmonary artery - alveolus - bronchiole - bronchus - trachea - larnyx - pharnyx
Term

Pulmonary tuberculosis is normally called short term viral infection.

 

 

True or False

Definition
False
Term
If a person was born and grew up at a higher altitude with lower oxygen concentrations in the Andes mountains, what consequences would we expect?
Definition
More hemoglobin, larger vital capacity from larger chest volume, greater endurance in activity at sea level, ability to breathe slower at sea level than natives of sea level areas.
Term
Functions of the digestive system include:
Definition
mechanical and chemical breakdown of food, elimination of waste products, absorption of food molecules.
Term
Which layer of the intestinal wall will first absorb nutrients from the lumen?
Definition
mucosa
Term
What is NOT a correct association of structure with function among layers of the digestive tract?
Definition
The muscularis consists of two layers of voluntary striated muscles to force food through the tract.
Term
The _________ functions to store food, kill bacteria, and partially digest proteins.
Definition
stomach
Term
Which duct from the liver introduces bile, is the entry point of highly acidic contents from the stomach and is a pancreatic duct that introduces basic fluids to neutralize stomach acid...
Definition
the duodenum
Term
What is considered an accessory gland in the digestive system?
Definition
pancreas
Term
Liver does NOT take part in the production of...
Definition
digestive enzymes
Term
Insects often have very specific food plants.  A species that feeds on walnut leaves starves when fed hickory leaves, etc.  The main biological reason for this is...
Definition
different tolerances to plant chemicals and differences in digestive enzymes.
Term
At body temperature, what combination is most likely to result in digestion?
Definition
protein, HCI, pepsin
Term
At body temperature, what combination is most likely to result in digestion?
Definition
fat, bile, lipase
Term
Which organ in the human produces maltase and peptidases?
Definition
small intestine
Term
Individuals who think they are overweight but are actually starving suffer from...
Definition
anorexia nervosa
Term

Lymph contains the same proteins as found in the blood.

 

 

True or False

Definition
False
Term
What is NOT considered a lymphoid organ?
Definition
kidneys
Term
What is NOT considered to be a innate non specific defense mechanism against infection?
Definition
antibodies
Term
An antihistamine counters the effects of a histamine.  What are the effects of a histamine?
Definition
Capillary dilation causing redness, swelling, fever, increased white blood cells to the area of injury.
Term
Which protein forms an orderly cascade of reactions in the blood and ends by forming pores in bacterial cell membranes?
Definition
complement
Term
Which molecule is released from a viral infected cell that interferes with viral replication?
Definition
interferon
Term
What is considered to be a acquired defense mechanism against infection?
Definition
antibody mediated immunity and cell mediated immunity
Term
What is most directly responsible for the secretion of antibodies?
Definition
plasma cells
Term

Which of these might become an antigen?

 

a toxcin

a viral particle

a bacterium

mismatched blood transfusion

Definition
mismatched blood transfusion
Term

Which of the following is an example of passive immunity?

 

antibodies in mother's milk

mucus in respiratory tract

childhood vaccination

normal bacteria in intestine

Definition
antibodies in mother's milk
Term

An suto immune disorder results in one's own immune system attacking their tissues.

 

 

True or False

Definition
True
Term
A person who is blood type AB has...
Definition
antigens A and B on the surface of RBCs.
Term
A person who is B positive will have...
Definition
B antigens, antibody A, Rh antigen
Term

Arteries are the site of high blood pressure and are found deep in the body.

 

 

True or False

Definition
True
Term

Veins always carry deoxygenated blood.

 

 

True or False

Definition
False
Term
What is the correct sequence that a drop of blood returning from the lungs (pulmonary circuit) encounters the heart valves?
Definition
left atrioventricular valve - aortic semilunar valve - right atrioventricular valve - pulmonary semilunar valve
Term
Contraction of the left ventricle forces blood initially into the...
Definition
aorta
Term
Incomplete closing of the _________ valves will cause heart ________, respectively.
Definition
atrioventricular, murmurs
Term
Oxygenated blood enters the heart at the...
Definition
left atrium
Term
What is the correct path of blood from the heart to the kidneys and back to the heart again?
Definition
left ventricle - aorta - renal artery - kidney - renal vein - vena cava - right atrium
Term

The SA node initiates heartbeat and is called the "pacemaker".

 

 

True or False

Definition
True
Term
Which phase of the ECG indicates ventricular excitation and contraction?
Definition
QRS
Term

White blood cells are a transport for carbon dioxide.

 

 

True or False

Definition
False
Term
Firefighters must be careful not to become poisoned by carbon monoxide.  How does this harm them?
Definition
Carbon monoxide combines with hemoglobin more readily than oxygen and stays combined for hours, making oxygen unavailable for cell respiration.
Term
Exchange of nutrients, waste products and gases between blood and peripheral tissue fluid occur in...
Definition
capillaries
Term

In capillary beds, more water is forced out of the capillaries than is drawn back in by osmosis.  Consequently, fluid is left behind as tissue fluid.

 

 

True or False

Definition
True
Term
An accumulation of fatty plaques along with possible inflammation and blood clots is called...
Definition
atherosclerosis
Term
What may result from atherosclerosis?
Definition
aneurysm, cerebovascular accident, transient ischemic attack or myocardial infaction
Term
What are basic types of tissue?
Definition
connective, epithelial, muscular, nervous
Term
Stratified cuboidal epithelium has...
Definition
many layers of cube shaped cells.
Term
Which type of junction forms a passageway for molecules to pass between neighboring cells?
Definition
gap junction
Term
Carilage that has a clear, milkglass appearance and is found at the ends of long bone is called...
Definition
hyaline cartilage
Term
What tissues in collegen fibers are impregnated with hard mineral salts?
Definition
bone
Term

Skeletal muscle cells are often striated or banded where actin and myosin filaments overlap.

 

 

True or False

Definition
True
Term
What type of tissue will respond to stimuli and transmit impulses?
Definition
nervous
Term
If you suffered a severe burn over most of the body, what function of the skin would be most compromised?
Definition
protection of muscle from abrasion and pain, production of sweat that cools when overheating, prevention of heat and water loss, prevention of mass infection by bacteria, viruses, and parasites.
Term

The body uses homeostasis in order to respond to cold by rerouting blood away from the skin.

 

 

True or False

Definition
True
Term

The correct order for homeostatic processing would be effector-sensor-control center.

 

 

True or False

Definition
True
Term

Homeostatic positive feedback loops usually amplify the original stimulus.

 

 

True or False

Definition
True
Term
Why would a doctor prevent a patient from eating after surgery until there is evidence the the digestive tract is functioning?
Definition
The anesthetic probably affects nerves that slow all smooth muscle actions.
Term
Photosynthetic activity can be found in...
Definition
plants, algae, and some bacteria
Term
The substance that initially traps solar energy in photosynthesis is...
Definition
chlorophyll
Term
The raw materials or reactants of the photosynthetic process include...
Definition
carbon dioxide and water
Term
What are the end products of photosynthesis?
Definition
oxygen and carbohydrate
Term

A photosystem includes pigments and an electron system and are located in the stroma of the mitochondria.

 

True or False

Definition
False
Term
Oxygen generated during photosynthesis is derived from the splitting of...
Definition
water
Term
The function of the ________ is to capture sunlight and convert it into chemical energy in the form of NADPH and ATP.
Definition
light dependent reactions
Term
The __________ electron pathway produces ATP, but not NADPH.
Definition
cyclic
Term
NADPH and ATP are used in the ________ to synthesize carbohydrate.
Definition
light independent reaction of the Calvin Cycle.
Term
Carbon dioxide fixation occurs in the first step of the Calvin Cycle when CO2 combines with
Definition
RuBP
Term
The C(6)H(12)O(6)+6O(2)...6CO(2)+6H(2)O is the summary reaction for...
Definition
aerobic cellular respiration
Term
The order of the major pathways and reactions of aerobic cellular respiration is...
Definition
glycolysis - transition reaction - citric acid cycle - electron trasport
Term
Glycolysis...
Definition
produces a net gain of two ATP.
Term
During glycolysis...
Definition
pyruvate is formed.
Term
Which pathway in aerobic respiration will produce ATP, NADH2, and carbon dioxide?
Definition
citric acid cycle
Term
The final acceptor for hydrogen ions in aerobic cellular respiration is...
Definition
oxygen
Term
The largest number of ATP molecules are produced in which part of the respiration reaction?
Definition
electron transport system
Term
The second law of thermodynamics states that...
Definition
one usable form of energy cannot be completely converted into another usable form.
Term
Chemical reactions that release energy are...
Definition
exergonic reaction
Term
The amount of energy available to do work is called...
Definition
free energy
Term
ATP is the energy currency in cells because it...
Definition
contains assessable energy in phosphate bonds.
Term
Most enzymes are...
Definition
protein molecules
Term

Enzymes speed up metabolic reactions by lowering activation energy.

 

True or False

Definition
True
Term
Enzymes and the _________ form a temporary complex but the enzyme can be used again.
Definition
substrate
Term

Enzymes are unaffected by metabolic poisons.

 

True or False

Definition
False
Term
The specific shape of the enzyme active site...
Definition
determines the specific substrate and reaction type.
Term
Poisons are often...
Definition
mimicry molecules causing competitive inhibition, thus blocking the active site.
Term

If an enzymatic reaction was controlled by feedback inhibition, we would expect it to stop as soon as a critical level of the product was formed to fill the allosteric site of the enzyme.

 

True or False

Definition
True
Term
Vitamins can be components of...
Definition
coenzymes
Term
_________ is the gain of electrons, _________ is the loss of electrons.
Definition
reduction, oxidation
Term
A metabolic reaction that involves two part - an exergonic reaction that releases energy needed to drive a simultaneous endergonic reaction - is called?
Definition
a coupled reaction (reaction coupling)
Term

Cell respiration and photosynthesis are oxidation-reduction reactions.

 

True or False

Definition
True
Term

G0 stage is for mature non-dividing cells.

 

True or False

Definition
True
Term
The mitosis consists of each of the following except...
Definition
interphase
Term
How does cell division differ between animal and plant cells?
Definition
  • Animal cells lack entrioles and no asters form during cell division.
  • The cell plate is the final partitioning of animal cells.
  • Plant cells resort to binary fission.
  • Plant cells form a cleavage furrow or indentation of membrane between new daughter cells.
Term
When DNA is highly coiled and condensed during cell mitosis, it is called...
Definition
chromosomes
Term
If the total number of chromosomes in a cell is eight, then after mitosis there will be...
Definition
8 chromosomes in each daughter cell.
Term

During mitosis, separation of sister centromeres ensures that each daughter cell receives one copy of each chromosome.

 

True or False

Definition
False
Term
Non-dividing cells
Definition
interphase
Term
Nuclear envelope disappears, chromosomes condense
Definition
Prophase
Term
Chromosomes lined up at the equator
Definition
metaphase
Term
Sister chromatids separated
Definition
Anaphase
Term
Nuclear envelope re-forms, cytokinesis begins
Definition
Telophase
Term

Meiosis occurs inly in somatic cells to produce diploid gametes.

 

True or False

Definition
False
Term
If the diploid number is 12, then following meiosis...
Definition
4 resulting daughter cells will have 6 chromosomes each
Term
Cell division in prokaryotes is best characterized as...
Definition
a replication of the DNA strand followed by cell elongation and division.
Term

Sister chromatids are two identical chromosome strands still attached at the centromere.

 

True or False

Definition
True
Term
The cell membrane architecture is made of...
Definition
phospholipid and protein
Term

The cell membrane keeps all organic molecules sealed inside the cell.

 

True or False

Definition
False
Term

Receptor proteins embedded in the plasma membrane may bind specific hormones.

 

True or False

Definition
True
Term

Channel proteins change shape when combining with a substance to help it move across a membrane.

 

True or False

Definition
False
Term

Carrier proteins create pores that are always open creating pathways for substances to move across a membrane.

 

True or False

Definition
False
Term

Small molecules easily pass through the cell membrane.

 

True or False

Definition
True
Term

Which of the following is an active transport mechanism?

 

  • diffusion
  • facilitated diffusion
  • osmosis
  • Na-K pump
Definition
Na-K pump
Term

Of the following conditions, which is absolutely necessary for diffusion to take place?

  • a living cell
  • a non-permeable membrane
  • a true solution
  • a differentially permeable membrane
  • a concentration difference
Definition
a concentration difference
Term
Dye molecules will continue to diffuse in a beaker of liquid until...
Definition
they reach equilibrium and no further change in concentration occurs
Term
Osmosis requires...
Definition
a semi-permeable membrane with differing concentration of non-diffusable solute
Term

If a cell is placed in a hypotonic solution, water enters the cell.

 

True or False

Definition
True
Term
What is true of facilitated transport by carrier proteins?
Definition
It is represented by the glucose carrier that can transport hundreds of molecules a second down a concentration gradient.
Term

The lipid bilayer component of the plasma membrane provides a rigid impermeable, self-sealing membrane that keeps all internal living processes sealed inside.

 

True or False

Definition
False
Term
Active transport...
Definition
  • involves protein pumps
  • is associated with large numbers of mitochondria
  • may use up to forty percent of a cell's energy
  • moves molecules or ions against their concentration gradient.
Term
Carrier molecules (integral membrane proteins) are required for...
Definition
facilitated transport (diffusion) and active transport
Term

Which of these factors influences the rate of diffusion?

 

  • size of diffusing molecule
  • temperature
  • size of concentration gradient
  • type of media
Definition
All of these
Term
Compared with a eukaryotic cell, a prokaryotic cell...
Definition
lacks organelles beyond ribosomes.
Term

Which of the following is NOT a eukaryotic cell?

 

  • plant cell
  • liver cell
  • muscle cell
  • paramecium
  • bacterium
Definition
bacterium
Term
Ribosomal subunits are produced in the...
Definition
nucleus and nucleolus
Term

According to the theory all of the following are true EXCEPT:

 

  • all organisms are composed of cells.
  • the smallest unit of life is a nucleus.
  • both plants and animals are composed of cells.
  • a unicellular organism is composed of a single cell.
  • new cells arise only from preexisting cells.
Definition
the smallest unit of life is a nucleus
Term
If a cell lacked ribosomes, it would immediately be unable to...
Definition
synthesize proteins
Term
What is the sequence for the beginning of the production of the protein?
Definition
ribosomes - endoplasmic reticulum - Golgi apparatus
Term
The function of the plasma membrane is to...
Definition
control movement into and out of the cell
Term
Proteins are sorted based on their final destination in the...
Definition
Golgi
Term
The function of the mitochondria is...
Definition
ATP synthesis
Term

Which of the following structures are NOT found in the cytoplasm?

 

  • chromosomes
  • nucleolus
  • chloroplast
  • lysosome
Definition
chromosomes and nucleolus
Term

Which of these is best associated with plant cells?

 

  • cilia and flagella
  • chloroplasts and centrioles
  • rounded shape and flexibility
  • cell membrane and small vesicles
  • chloroplast and cell wall
Definition
chloroplast and cell wall
Term

The cytoskeleton secretes the calcium for bone tissue.

 

True or False

Definition
False
Term

Lysosomes store genetic material.

 

True or False

Definition
False
Term

Ribosomes are made up of 3 subunits of phospholipid and carbohydrate.

 

True or False

Definition
False
Term
The endosymbiotic hypothesis argues that prokaryotes became some of the organelles of early eukaryotic cells.  This would be supported by what evidence?
Definition
Mitochondria and chloroplasts are nearly identical to some free living prokaryotes.
Term

Which of the following is not one of the six basic elements of living organisms?

 

  • nitrogen
  • oxygen
  • phosphorus
  • hydrogen
  • cobalt
Definition
cobalt
Term
If the atomic number is 16 then...
Definition
there are 6 electrons in the outermost shell and the atom has 16 electrons.
Term
The chemical reactivity of an atom is dependent on...
Definition
the number of electrons in the outer shell.
Term

From the atomic number of an atom, you can determine all of the following EXCEPT:

 

  • the number of protons
  • the number of electrons
  • the number of neutrons
  • the number of electrons in the outer electron shell
Definition
the number of protons and
the number of electrons in the outer electron shell
Term
Atoms with the same number of protons, but different numbers of neutrons would be...
Definition
different isotopes of the same element
Term
If neutral atoms gain electrons they become...
Definition
negative ions
Term
Non-polar covalent bonds result from...
Definition
equal sharing of electrons in a covalent bond.
Term

Which of the following is NOT a property of water?

 

  • The temperature of water changes very slowly.
  • Many plar substances dissolve in water.
  • Water molecules demonstrate cohesiveness.
  • Water displays surface tension.
Definition
All of these are correct.
Term
Hydrogen bonds may be found...
Definition
between neighboring polar molecules such as water.
Term
The higher the PH...
Definition
the more basic the solution.
Term

The pH of urine is generally slightly acidic.  Which of the following would therefore be an expected pH for urine?

 

  • 6.4
  • 1.6
  • 12.7
  • 10.2
  • 7.4
Definition
6.4
Term
A(n) _________ reaction occurs when a dipeptide is broken into two separate amino acid molecules.
Definition
hydrolysis
Term

When a carbon chain has all the hydrogens it can hold, it is an unsaturated triglyceride.

 

True or False

Definition
False
Term
The functional group found in many organic molecules, includes carbohydrates, that is composed of an oxygen atom bonded to a hydrogen atom is called a...
Definition
hydroxyl group
Term

Lipids are generally hyrophilic molecules.

 

True or False

Definition
False
Term
A piece of petrified wood was once part of a living organism, but its tissues have been replaced with mineral.  However, upon examination it still exhibits which of the following properties of life?
Definition
organization
Term

Homeostasis involves relatively immediate physiological changes.  Adaptation is also due to an immediate physiological response and thus the results in evoluntionary change.

 

True or False

Definition
False
Term
A surgeon that specializes in bones and joints would be operating on which of the following levels?
Definition
organ system
Term

Asexual reproduction usually involves a single parent.  The resulting offspring closely resembles the parent thus increasing diversity within a population.

 

True or False

Definition
False
Term

Which of the following is NOT one of the three major domains of life?

 

  • plants
  • Eukarya
  • Bacteria
  • Archaea
Definition
Plants
Term

All living organisms must acquire energy to carry on life's activities.  Those organisms that must consume pre-formed organic molecules are classified as autotrophs.

 

True or False

Definition
False
Term

Which of the following groups contains the lest closely related organisms?

 

  • domain
  • species
  • phylum
  • kingdom
  • family
Definition
domain
Term
When you get hot, you perspire.  When you get cold, you shiver.  This illustrates which property of life?
Definition
homeostasis
Term

Correct scientific conclusions are permanent and never subject to change or refinement.

 

True or False

Definition
False
Term

Experiments need to be repeated.

 

True or False

Definition
True
Term

A control group is always exposed to the factor being tested.

 

True or False

Definition
False
Term
Bones of birds are hollow to reduce weight for flight.  This is an example of which characteristic of life?
Definition
Living things are adapted.
Term
What is the correct order of levels of organization from small to large?
Definition
atom - molecule - cell - tissue - organ system - population - community
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