-
A proposed solution or explanation of a scientfic event in nature is called a(n):
hypothesis
-
A ? is the basic measurement of lengh in the metric system.
meter
-
A ? is the basic unit of mass in the metric system.
gram
-
The metric system is based on powers of:
10
-
When viewing a slide on a compound microscope, you place the slide on the:
stage
-
When viewing a slide on high power, you should NEVER focus using the:
coarse focus
-
Which of the following is not the power of an objective lens?
A- 100X
B- 10X
C-25X
D-40X
C- 25X
-
When you increase the magnification, the feild of view...
decreases
-
Which is the 1st stage of the scientific method?
observe a problem
-
Which part of the scientific method contains the variable being tested?
experimental set-up
-
When sodium chloride dissolves in water, the sodium chloride dissociates into...
sodium and chloride ions
-
Due to an uneven distribution of its electrons, the water molecule is...
slightly charged at each end
-
Waxy or oily organic compounds are...
lipids
-
In polymerization, complex molecules are formed by the joining together of...
monomers
-
Most substances in the human body are classified as organic compounds because they contain...
carbon
-
The term that is least closely related to the others is...
A- glucose
B- fructose
C- disaccharide
D- monosaccharide
C- disaccharide
-
Proteins, unlike carbohydrates, contain...
nitrogen
-
When you dissolve salt in water, you produce a mixture called a...
solution
-
Many lipids are formed by the attachment of three...
fatty acids to glycerol
-
The amino acids in glycine and alanine bond to form a...
dipeptide
-
If all the carbon atoms in a fatty acid chain are joined by single bonds, the fatty acid is said to be...
saturated
-
In the body, enzymes...
decrease the "start-up" energy of a chemical reaction
-
Nucleotides are built up from each of the following basic parts except a...
C. 6-carbon sugar
-
When you shake sugar and sand together in a test tube, you cause them to form a...
mixture
-
Carbon has the ability to form chains of almost unlimited length by bonding with...
other carbon atoms
-
Pure water, in which the concentrations of H+ and OH- ions are equal, has a pH of...
7
-
When you dissolve instant coffee in water, the coffee is the...
solute
-
In dehydration synthesis, two molecules of simple compounds are combined by the...
rremoval of a molecule of water
-
In a chemical reaction, a reactant binds to an enzyme at a region known as the...
active site
-
The term that is least closely related to the others is...
A. polypeptide
-
A compound that releases hydrogen ions into solution is a (an)...
acid
-
Polysaccharides are split apart to form monosaccharides in a reaction know as...
hydrolysis
-
The structures formed when phospholipids are mixed with warer are called...
sterols
-
The amino group in any amino acid is...
-NH2
-
Although glucose and galactose both have the formula C6H12O6, they differ in the...
number of covalent bonds
-
Which term decribes a cell drinking?
pinocytosis
-
The ? is the organelle responsivle for producing the energy of the cell.
mitochondria
-
The ? is the organelle that produces RNA.
ribosome
-
The cell membrane is ?.
selectively permeable
-
The ? of the cell functions in storage and packaging of cell products.
golgi apparatus
-
The nucleus contains:
DNA
-
Movement of water from a high to low concentration is called:
osmosis
-
Which of the following is not made of microfilaments and microtubules?
B. lysosomes
-
Which of the is not a type of active trasport?
B. facilitated diffusion
-
Which organelle contains digestive enzymes?
lysosomes
-
? is a pigment that is responsible for vision.
rhodopsin
-
Some cells contain a ?, which allows excess water to be pumped outside the cell.
contractile vacuole
-
Which of the following does not require cellular energy (ATP)?
D. diffusion
-
Plant cells contain a cell wall which functions in:
structure of the cell
-
? store pigments responsible for photosynthesis.
chloroplasts
-
Who developed the first microscope?
Leeuwnhoek
-
Who discovered that cells come from pre-existing cells?
Virchow
-
Who viewed cork cells under a microscope?
Hooke
-
Which of the following does not contain a cell wall?
A. animal cell
-
The protein ? holds the cell wall together.
pectin
-
The basic unit of structure of all living things is the:
cell
-
The control center of the cell is the:
nucleus
-
Organisms whose cells DO NOT have a nucleus are called:
prokaryotes
-
? is the process in which cells are suited to perform a particular functions.
specialization
-
? store the reactants and products of digestion.
vacuoles
-
The process of changing one bacterial cell into another identical cell is called...
replication
-
-
A nucleiotide of DNA would contain:
thymine
-
Watson and Crick:
created the first model of DNA
-
What bonds in a DNA molecule break before replication takes place?
adenin-thymine
-
Where does transcription occur in the cell?
nucleus
-
When the information on a DNA molecule is read ? are produced.
proteins
-
When DNA transcription occures, adenine matches with the following ribose,
uracil
-
Where inside the cell is RNA turned into a protein?
ribosome
-
A nucleic acid is made of a sugar molecule, a nitrogenous base, and a:
phosphate group
-
Uncontrolled cell division is called:
cancer
-
Chromatids are held together in the center by a:
spindle
-
Each chromosome strand is called a(n):
chromatid
-
If a cell has 6 chromosomes, how many chromosomes would the daughter cell have?
3
-
The stage in mitosis in which the chromosomes line up down the middle of the cell is known as:
metaphase
-
Which occures first during mitosis?
chromosome duplication
-
Which structure is found during plant cell mitosis and not animal cell mitosis?
cell plate
-
Which stage of mitosis occurs in 3 phases?
interphase
-
During ? the centrioles separate and travel to the opposite sides of the cell.
prophase
-
? occurs as the last phase of mitosis.
cytokinesis
-
Human sex cells are produces through the process of:
meiosis
-
What occurs in meiosis that causes the genes to get "mixed up"?
crossing-over
-
A human has 46 chromosome. How many chromosomes does a human cell have after meiosis occurs?
23
-
What is created as a product of meiosis?
gamettes
-
Humans contain 2 sets of chromosomes. Therefore, they are said to be ?.
diploid
-
The kingdom that contains prokaryotes is the:
eubacteria
-
The larges taxon is a
kingdom
-
A classification system does all the following, except:
A.
-
The only taxon that specifically names an organism:
species
-
In the name, Acer rubrum, Acer is the:
genus
-
Which of the following is not the name of a taxon?
B.
-
Who developed binomial nomenclature?
Linneas
-
All members of the protista kingdom are:
eukaryotic
-
All members of the plant kingdom are:
eukaryotic
-
Several families of similare organisms make up an:
order
-
What structure forms the skeletal support of sponges?
spicules
-
What is the mobile, bell shaped life stage of a cnidarian?
medusa
-
Animals that do not move are:
sessile
-
What method is used by sponges and polyps to produce asexually?
budding
-
Which cells of the sponge build spicules?
amebocytes
-
Which of the following are stinging cells of cnidarians?
nematocysts
-
Which sponge cells contain flagella?
collar cells
-
What is the name of a spore formed during reproduction?
gemmule
-
An anemone moves food into its mouth using its:
tentacles
-
A sponges central cavity is called a:
spongocoel
-
An animal with a backbone is called a:
vertebrate
-
What is another name for a meat eater?
carnivore
-
What do detrious feeders eat?
dead materials
-
The "belly" side of an organism is called the ? side.
ventral
-
Spicules are created by which protein?
spongin
-
A sponge exhibits which body type?
bilateral symmetry
-
A small cluster of nerve cells is called:
a ganglion
-
An organism which feeds off of other organisms is called a:
parasite
-
A ? is an immature stage of an adult.
nymph
-
A ? connects the mouth to the stomach.
pharynx
-
The ability of starfish to regrow rays is called:
regeneration
-
The ring canal and radial cals are part of the:
water vascular system
-
All echinoderms are marine. What does this mean?
live in the ocean only
-
Echinoderms remover their nitrogen waste through the:
anus
-
Which structure in a starfish's body exits to feed?
cardiac stomach
-
The latin meaning of echinoderm is:
spiny skinned
-
The madreporite and the anus are located on a starfish's ? side.
aboral
-
The free-swimming ciliated larva of a mollusk is called a:
trochopore
-
What is the toothed tongue on a snail called:
radula
-
Which organ is used by clams for respiration?
gills
-
Which class of mollusks does the squid and octopus belong to?
cephalopoda
-
Which class of mollusks do slugs and snails belong to?
gastropods
-
Clams belong to the calss of mollusks called:
bivalves
-
The area of a clam that contains its organs is called the:
visceral mass
-
Which kind of mollusks are filter feeders?
bivalves
-
Which layer secretes the shell in a clam?
mantle
-
The heart of a clam is located in the:
viseral mass
-
The shell of the clam is made of:
calcium carbonate
-
Mollusks that are carnivores drill through shells of their prey using:
a radula
-
An echinoderm uses ? to balance.
statocysts
-
In mullusks, liquid wastes are removed from the body through:
nephridia
-
The skeleton of an echinoderm is made up of:
bumpy plates
-
In the starfish, the mouth is located on the ? side.
oral
-
each of the following is part of an echinoderm's water vascular system except the:
A. gonads
-
Nitrogen is excreted from the echinoderm in the form of:
ammonia
-
How does asexual reproducton in a free-living flatworm occur?
fission
-
a cluster of nerve cells is called a (an):
ganglion
-
? are flatworms that live in marine or fresh water environments.
turbellarians
-
A parasite ? in an intermediate host.
reproduces asexually
-
A(n) ? is a ratasitic roundworm.
ascaris
-
roundworms hace a digestive system:
with two openings
-
the body of an annelid has:
segments
-
A ? is an external parasite.
leech
-
? are bristlelike structures on an annelids body,
satae
-
tunnels made by earthworms become passageways for:
plant roots
-
which of the following is a false statement about flatworms:
A.
-
which organ pumps food into the stomach of all worms?
pharynx
-
how do flatworms detect light change?
eyespots
-
a leech has a muscular penetrating structure called a:
proboscis
-
the name for each individual section of a tapeworm is a(n):
proglottid
-
False statement about roundworms?
they have body segments
-
which worm causes the disease elephantiasis?
filarial worms
-
how does an earthworm eliminate nitrogen-containing wastes?
nephridia
-
the ? grinds food into small pieces in the earthworm
gizzard
-
which of the following is a characteristic of flatworms?
has an incomplete digestive tract`
-
The group of arthropods that use book lungs for respiration are:
spiders
-
in crustaceans, respiration occurs through:
gills
-
crabs attack potential enemies using:
powerful claws
-
an insect with one pair of legs on each of its segment is called a(n):
centipede
-
an arthropod with 3 distict body parts is called a(n):
insect
-
scorpians, unlike spiders, have:
pedipalps with claws
-
the abdomen of crayfish contains:
swimmerets
-
ants and bees are social insects that do not have:
several queens
-
an insect whose mouthparts are specialized for sippin nectar is the:
butterfly
-
the process in which insects shed their exoskeletos is called:
molting
-
the second stage in complete metamorphosis is called:
larva
-
insects have 3 pairs of legs attached to the:
thorax
-
the function of spinnerets is to
emit silk
-
in crustaceans, nitrogenous waste is excreted with the help of:
green glands
-
which of the following is a herbivore?
millipede
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