SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
Test your basic knowledge |
AP Biology
Start Test
Study First
Subjects
:
science
,
ap
,
biology
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. A three-dimensional biological polymer constructed from a set of 20 different monomers called amino acids.
NADP+
prometaphase
protein
haploid cells
2. Actin (tension bearing elements ) muscle contraction
microfilaments
endoplasmic reticulum
nucleolus
chiasmata
3. The membrane at the boundary of every cell that acts as a selective barrier - thereby regulating the cell's chemical composition.
electrochemical gradient
Cytochrome
plasma membrane
redox reactions
4. A chromosomal condition in which a particular cell has only one copy of a chromosome - instead of the normal two; the cell is said to be monosomic for that chromosome.
monosomic
extracellular matrix
proton pump
electrogenic pumps
5. The principle of conservation of energy. Energy can be transferred and transformed - but it cannot be created or destroyed.
cytosol
exocytosis
1st law of thermodynamics
Cell-cell recognition
6. A functional group consisting of a hydrogen atom joined to an oxygen atom by a polar covalent bond. Molecules possessing this group are soluble in water and are called alcohols.
trisomic
fatty acid
cyclic photophosphorylation
hydroxyl groups
7. Lacking oxygen; referring to an organism - environment - or cellular process that lacks oxygen and may be poisoned by it.
photon
viral envelope
anaerobic
chlorophyll A
8. Composed of nine sets of triplet microtubule arrange in a ring
allosteric site
centrioles
cohesion
leading strand
9. One of two light-harvesting units of a chloroplast's thylakoid membrane; it uses the P700 reaction-center chlorophyll.
photosystem I
cotransport
contractile vacuoles
polyploidy
10. Reproduction of cells
trisomic
cell division
Oxidative Phosphorylation
grana
11. The fifth and final subphase of mitosis in which daughter nuclei are forming and cytokenisis actually begins
pH
lagging strand
insertion
telophase
12. The first subphase of mitosis in which the chromatin is condensing and the mitotic spindle begins to form but the nucleolus and nucleus are still in intact
interphase
cofactor
prophase
noncompetitive inhibitor
13. A method of organizing the chromosomes of a cell in relation to number - size - and type.
bound ribosomes
karyotype
F1 generation
barr body
14. A specialized region on the centromere that links each sister chromatid to the mitotic spindle
kinetochore
denaturation
ATP
ligands
15. A netlike array of protein filaments that maintains the shape of the nucleus.
amniocentesis
phagocytosis
nuclear lamina
element
16. A measure of the intensity of heat in degrees reflecting molecules average kinetic energy
chemical bonds
P. generation
phospholipids
temperature
17. The attraction of an atom for the electrons of a covalent bond
electronegativity
unsaturated fatty acid
polyribosomes
chlorophyll
18. Attached to outside of ER or nuclear envelope- proteins that are destined for insertion into membranes or packaging certain organelles (ex: lysosome)
functional groups
heat
bound ribosomes
peroxisome
19. A specialized molecule sharing the reaction center with the chlorophyll a molecule; it accepts an electron from the chlorophyll a molecule.
primary electron acceptor
thylakoids
photosystem I
steroids
20. A discrete unit of hereditary information consisting of a specific nucleotide sequence in DNA (or RNA - in some viruses).
genes
noncompetitive inhibitor
glycolysis
amino group
21. An adenine-containing nucleoside triphosphate that releases free energy when its phosphate bonds are hydrolyzed. This energy is used to drive endergonic reactions in cells.
gametophyte
ATP
bound ribosomes
endocytosis
22. An acceptor that temporarily stores energized electrons produced during the light reactions.
primer
turgid (firm)
cytoplasm
NADP+
23. The change in shape of the active site of an enzyme so that it binds more snugly to the substrate - induced by entry of the substrate.
macromolecule
rubisco Ribulose carboxylase
induced fit
spliceosome
24. A human genetic disease caused by a sex-linked recessive allele - characterized by excessive bleeding following injury.
induced fit
hydrophilic
hemophilia
plastids
25. A protein channel in a cell membrane that opens or closes in response to a particular stimulus.
electrogenic pumps
chiasmata
gated channels
linked genes
26. A storage polysaccharide in plants consisting entirely of glucose.
introns
contractile vacuoles
nucleolus
starch
27. A noncoding - intervening sequence within a eukaryotic gene.
substrate
somatic cell
active site
introns
28. The disruption of a cell and separation of its organelles by centrifugation.
cell fractionation
selective permeability (the ability to allow some sub. to cross the plasma membrane more easily)
mitochondria
desmosome
29. Mendel's first law - stating that allele pairs separate during gamete formation - and then randomly re-form as pairs during the fusion of gametes at fertilization.
somatic cells
law of segregration
cyclic photophosphorylation
sulfhydryl group
30. The production of ATP by noncyclic electron flow.
noncyclic phosphorylation
centrioles
mitotic spindle
chlorophyll B
31. Phase of cell cycle that includes mitosis and cytokenisis
nuclear envelope
induced fit
mitotoic phase
polygenic inheritance
32. Provide cytoplasmic channels between adjacent animal cells
gap junctions
nuclear envelope
phenotype
cholesterol
33. A technique for determining genetic abnormalities in a fetus by the presence of certain chemicals or defective fetal cells in the amniotic fluid - obtained by aspiration from a needle inserted into the uterus.
amniocentesis
disaccharides
golgi apparatus
reducing agent
34. A substance that reduces the activity of an enzyme by binding to a location remote from the active site - changing its conformation so that it no longer binds to the substrate.
geometric isomers
pinocytosis
noncompetitive inhibitor
concentration gradient
35. A route of electron flow during the light reactions of photosynthesis that involves only photosystem I and that produces ATP but not NADPH or oxygen
free ribosomes
light reactions
cyclic electron flow
translation
36. Penetrate the hydrophobic core of the lipid bilayer - often completely spanning the membrane (as transmembrane proteins).
trisomic
noncompetitive inhibitor
cytoskeleton
Integral proteins
37. Use info - from the DNA to make proteins and carry out protein synthesis
faculative anaerobes
hybridization
valence electrons
ribosomes
38. The tendency of molecules of any substance to spread out in the available space it is driven by intrinsic kinetic energy (thermal motion or heat) of molecules
diffusion
chlorophyll A
valence electrons
transcription unit
39. A functional group present in aldehydes and ketones and consisting of a carbon atom double-bonded to an oxygen atom.
dominant allele
growth factor
carbonyl groups
exons
40. A type of blue-green photosynthetic pigment that participates directly in the light reactions.
chlorophyll A
domains
phagocytosis
krebs Cycle
41. A sugar (monosaccharide) or one of its dimers (disaccharides) or polymers (polysaccharides).
RNA processing
organic chemistry
reducing agent
carbohydrates
42. A functional group consisting of a sulfur atom bonded to a hydrogen atom (—SH).
sulfhydryl group
ribosomes
smooth ER
heat
43. An aberration in chromosome structure resulting from an error in meiosis or from mutagens; specifically - reattachment of a chromosomal fragment to the chromosome from which the fragment originated - but in a reverse orientation.
chromosomes
electrochemical gradient
golgi apparatus
inversion
44. The electron donor in a redox reaction.
exons
reducing agent
pH
heterotrophs
45. A membrane-enclosed bag of hydrolytic enzymes found in the cytoplasm of eukaryotic cells.
F1 generation
lysosomes
triplet code
ribosomal RNA
46. The cellular secretion of macromolecules by the fusion of vesicles with the plasma membrane.
exocytosis
turgid (firm)
central vacuole
cytoplasm
47. A long cellular appendage specialized for locomotion - formed from a core of nine outer doublet microtubules and two inner single microtubules - ensheathed in an extension of plasma membrane.
hydrocarbons
flagella
fluid mosaic model
microfilaments
48. The synthesis of a polypeptide using the genetic information encoded in an mRNA molecule. There is a change of 'language' from nucleotides to amino acids
sodium potassium pump
chromosomes
translation
structural isomers
49. A measure of hydrogen ion concentration equal to -log [H+] and ranging in value from 0 to 14.
ribosomes
solvent
pH
domains
50. An increase or decrease in the density of a chemical substance in an area -->substances tend to move form where there are more concentrated to where they are less concentrated
glycolysis
concentration gradient
punnett square
cytosol