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. Electrical potential energy due to the separation of opposite charges
calvin cycle
voltage
organic chemistry
lactid acid fermentation
2. The spontaneous passage of molecules and ions - bound to specific carrier proteins - across a biological membrane down their concentration gradients
cyclic electron flow
chloroplast
lagging strand
facilitated diffusion
3. The binding together of like molecules often by hydrogen bonds
somatic cells
calvin cycle
cohesion
temperature
4. Charts of chromosomes that locate genes with respect to chromosomal features.
terminator
alcohol fermentation
cytological maps
F1 generation
5. An organism that obtains organic food molecules by eating other organisms or their by-products.
heterotrophs
glycosidic linkage
plasmolysis
chromatin
6. A type of blue-green photosynthetic pigment that participates directly in the light reactions.
chlorophyll A
disaccharides
gap junctions
cleavage
7. The loss of electrons from a substance involved in a redox reaction.
Rough ER
nucleus
cyclic photophosphorylation
oxidation
8. The distance between crests of waves - such as those of the electromagnetic spectrum.
covalent bonds
wavelength
diffusion
mutagens
9. 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.
free energy
inversion
mesophyll cell
sex linked genes
10. A globular protein that links into chains - two of which twist helically about each other - forming microfilaments in muscle and other contractile elements in cells.
nucleus
heat
actin
terminator
11. A membranous sac that helps move excess water out of the cell.
capsid
codominance
centrosomes
contractile vacuoles
12. An organelle found only in plants and photosynthetic protists that absorbs sunlight and uses it to drive the synthesis of organic compounds from carbon dioxide and water.
transfer RNA
chloroplasts
centrosomes
polysaccharides
13. An aggregation of several ribosomes attached to one messenger RNA molecule.
rubisco Ribulose carboxylase
chromosomes
polyribosomes
mutagens
14. The X-shaped - microscopically visible region representing homologous chromatids that have exchanged genetic material through crossing over during meiosis.
chiasmata
concentration gradient
F2 generation
base pair substitution
15. A plant that uses crassulacean acid metabolism - an adaptation for photosynthesis in arid conditions - first discovered in the family Crassulaceae. Carbon dioxide entering open stomata during the night is converted into organic acids - which release
CAM
osmoregulation
mitotic spindle
lactid acid fermentation
16. A glycoprotein in the extracellular matrix of animal cells that forms strong fibers - found extensively in connective tissue and bone; the most abundant protein in the animal kingdom.
trace elements
incomplete dominance
cleavage
collagen
17. A steroid that forms an essential component of animal cell membranes and acts as a precursor molecule for the synthesis of other biologically important steroids.
Acetyl CoA
domains
cholesterol
fatty acid
18. An already existing RNA chain bound to template DNA to which DNA nucleotides are added during DNA synthesis.
promoter
viral envelope
condensation reaction
primer
19. The fifth and final subphase of mitosis in which daughter nuclei are forming and cytokenisis actually begins
trace elements
telophase
cytoskeleton
hypertonic
20. A flattened membrane sac inside the chloroplast - used to convert light energy to chemical energy.
cellular respiration
thylakoids
insertion
electron microscope
21. A membrane that encloses the central vacuole in a plant cell - separating the cytosol from the cell sap
cytoplasm
NADP+
tonoplast
tetrad
22. A substance that reduces the activity of an enzyme by entering the active site in place of the substrate whose structure it mimics.
phospholipids
alcohol fermentation
double helix
competitive inhibitor
23. A type of photosynthetic cell arranged into tightly packed sheaths around the veins of a leaf.
structural isomers
free energy
bundle sheath cell
homologous chromosomes
24. The removal of noncoding portions (introns) of the RNA molecule after initial synthesis.
chloroplast
unsaturated fatty acid
transformation
RNA splicing
25. The multicellular haploid form in organisms undergoing alternation of generations that mitotically produces haploid gametes that unite and grow into the sporophyte generation.
plasmolysis
benign tumor
hydrophobic
gametophyte
26. A regularity protein whose concentration fluctuates cyclically
cyclin
prokaryotic cell
growth factor
tight junctions
27. Attached to outside of ER or nuclear envelope- proteins that are destined for insertion into membranes or packaging certain organelles (ex: lysosome)
absorption spectrum
bound ribosomes
selective permeability (the ability to allow some sub. to cross the plasma membrane more easily)
nucleolus
28. The ability of a cell to distinguish one type of neighboring cell from another is crucial to the functioning of an organism carbohydrates are important for this
functional groups
Cell-cell recognition
beta (B) pleated sheet
activation energy
29. 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.
leading strand
ATP
prophase
cell cycle
30. A metabolic pathway that consumes oxygen - releases carbon dioxide - generates no ATP - and decreases photosynthetic output; generally occurs on hot - dry - bright days - when stomata close and the oxygen concentration in the leaf exceeds that of car
ribosomal RNA
photorespiration
feedback inhibition
gametophyte
31. The attraction of an atom for the electrons of a covalent bond
electronegativity
phagocytosis
DNA ligase
genetic recombination
32. The specific portion of an enzyme that attaches to the substrate by means of weak chemical bonds.
mitosis
organelles
active site
dehydration reaction
33. In comparing two solutions - the one with a lower solute concentration.
hypotonic
ribosomes
nuclear envelope
sex linked genes
34. An electrically neutral particle found in the nucleus of an atom
CAM
anticodon
nucleic acid
neutron
35. A type of strong chemical bond in which two atoms share one pair of valence electrons
mutagens
genome
unsaturated fatty acid
covalent bonds
36. A complex assembly that interacts with the ends of an RNA intron in splicing RNA - releasing the intron - and joining the two adjacent exons.
amniocentesis
phosphate group
golgi apparatus
spliceosome
37. The cellular uptake of macromolecules and particulate substances by localized regions of the plasma membrane that surround the substance and pinch off to form an intracellular vesicle.
ketone
deletion
monosomic
endocytosis
38. A phenomenon in which one gene alters the expression of another gene that is independently inherited
bundle sheath cell
epistasis
nondisjunction
exergonic reaction
39. A fatty acid possessing one or more double bonds between the carbons in the hydrocarbon tail. Such bonding reduces the number of hydrogen atoms attached to the carbon skeleton.
unsaturated fatty acid
pinocytosis
functions of the proteins
voltage
40. Span the membrane 1. channel proteins which have a hydrophilic channel that certain molecules or ions can use as a tunnel through the membrane (aquaporins facilitate the passage of water through the membrane) 2. carrier proteins bind to molecules and
ultra centrifuges
free ribosomes
transport proteins
fermentation
41. Having aversion to water tend to coalesce and form droplets of water
saturated fatty acid
fertilization
mitochondria
hydrophobic
42. A catabolic process that makes a limited amount of ATP from glucose without an electron transport chain and that produces a characteristic end product - such as ethyl alcohol or lactic acid.
wild type
Substrate-Level Phosphorylation
fermentation
rubisco Ribulose carboxylase
43. A polymer of up to over a thousand monosaccharides - formed by dehydration reactions.
codominance
malignant tumor
concentration gradient
polysaccharides
44. Offspring resulting from interbreeding of the hybrid F1 generation.
cyclic electron flow
hydrocarbons
mismatch repair
F2 generation
45. The second of two major stages in photosynthesis (following the light reactions) - involving atmospheric CO2 fixation and reduction of the fixed carbon into carbohydrate.
calvin cycle
lysosomes
proton
catalyst
46. 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
acid
pedigree
cyclic electron flow
organelles
47. The movement of specific molecules into a cell by the inward budding of membranous vesicles containing proteins with receptor sites specific to the molecules being taken in; enables a cell to acquire bulk quantities of specific substances.
macromolecule
prometaphase
cyclin
receptor mediated endocytosis
48. The membrane at the boundary of every cell that acts as a selective barrier - thereby regulating the cell's chemical composition.
plasma membrane
carotenoids
fatty acid
turgid (firm)
49. The coupling of the 'downhill' diffusion of one substance to the 'uphill' transport of another against its own concentration gradient.
unsaturated fatty acid
primary electron acceptor
oxidation
cotransport
50. A property of biological membranes that allows some substances to cross more easily than others.
noncyclic phosphorylation
haploid cells
selective permeability (the ability to allow some sub. to cross the plasma membrane more easily)
trans face