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. The substance in which animal tissue cells are embedded consisting of protein and polysaccharides.
cellulose
nucleoid
extracellular matrix
bound ribosomes
2. A method of metabolic control in which the end product of a metabolic pathway acts as an inhibitor of an enzyme within that pathway.
valence electrons
feedback inhibition
F1 generation
DNA
3. A property of biological membranes that allows some substances to cross more easily than others.
geometric isomers
transformation
anaphase
selective permeability (the ability to allow some sub. to cross the plasma membrane more easily)
4. Anything takes up space and has mass
CAM
RNA splicing
matter
free ribosomes
5. A giant molecule formed by the joining of smaller molecules - usually by a condensation reaction. Polysaccharides - proteins - and nucleic acids are macromolecules.
chromatin
facilitated diffusion
clone
macromolecule
6. The synthesis of RNA on a DNA template.
smooth ER
transcription
fermentation
macromolecule
7. An organic molecule consisting only of carbon and hydrogen.
hydrocarbons
transformation
photosystem II
DNA
8. The physical and physiological traits of an organism.
cation
organic chemistry
tonoplast
phenotype
9. Golgi apparatus--> gives rise to vesicles which pinch off and travel to other sites
trans face
photophosphorylation
microtubules
primer
10. A specific configuration of atoms commonly attached to the carbon skeletons of organic molecules and usually involved in chemical reactions.
dehydration reaction
cristae (plural - cristae)
monomer
functional groups
11. A cell creates a vesicle around a droplet of extracellular fluid
covalent bonds
mismatch repair
pinocytosis
glycoproteins
12. Amphipathic molecules have both hydrophobic regions and hydrophilic regions <phospholipids>.
transformation
organelles
cis face
amphipathic molecules
13. The production of ATP by noncyclic electron flow.
noncyclic phosphorylation
plastids
endoplasmic reticulum
peroxisomes
14. A double-stranded - helical nucleic acid molecule capable of replicating and determining the inherited structure of a cell's proteins.
heterozygous
feedback inhibition
DNA
specific heat
15. A molecule that is a constituent of the inner bilayer of biological membranes - having a polar - hydrophilic head and a nonpolar - hydrophobic tail.
phospholipid
binary fission
terminator
active transport
16. A three-dimensional biological polymer constructed from a set of 20 different monomers called amino acids.
protein
cell cycle control system
NADP+
chemical bonds
17. The generation-to-generation sequence of stages in the reproductive history of an organism.
transcription unit
duchenne muscular dystropy
life cycle
surface tension
18. A type of RNA - synthesized from DNA - that attaches to ribosomes in the cytoplasm and specifies the primary structure of a protein.
electrogenic pumps
mRNA
frameshift mutation
cleavage
19. A spontaneous chemical reaction in which there is a net release of free energy
G1 phase
RNA processing
exergonic reaction
heterozygous
20. 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.
homozygous
RNA polymerase
crossing over
monosomic
21. The fluid of the chloroplast surrounding the thylakoid membrane; involved in the synthesis of organic molecules from carbon dioxide and water.
dominant allele
rough ER
stroma
hydrogen bond
22. The general term for the production of offspring with new combinations of traits inherited from the two parents.
amphipathic molecules
genetic recombination
voltage
insertion
23. The reactant on which an enzyme works
inversion
mitosis
substrate
ultra centrifuges
24. First growth phase of the cell cycle - consisting of the portion of interphase - after DNA synthesis occurs
hydroxyl groups
electrochemical gradient
C4 plants
G1 phase
25. Generate and degrade H2O2 in performing various metabolic functions transfer hydrogen from various substrates to oxygen and they produce H2O2. Use O to break fatty acids that can be sent to mitochondria
peroxisomes
visible light
beta (B) pleated sheet
lactid acid fermentation
26. The X-shaped - microscopically visible region representing homologous chromatids that have exchanged genetic material through crossing over during meiosis.
cellulose
chiasmata
noncompetitive inhibitor
complete dominance
27. A mass of abnormal cells that remains at the site of origin
benign tumor
solution
chromatin
2nd law of thermodynamics
28. The diffusion gradient of an ion - representing a type of potential energy that accounts for both the concentration difference of the ion across a membrane and its tendency to move relative to the membrane potential.
carboxyl group
reaction center
barr body
electrochemical gradient
29. Unit - a region of a DNA molecule that is transcribed into an RNA molecule
electron transport chain
transcription unit
binary fission
ribosomes
30. A plant that uses the Calvin cycle for the initial steps that incorporate CO2 into organic material - forming a three-carbon compound as the first stable intermediate.
nucleolus
centrioles
organelles
C3 plants
31. That portion of the endoplasmic reticulum studded with ribosomes.
life cycle
Rough ER
benign tumor
viral envelope
32. The potential energy stored in the form of an electrochemical gradient - generated by the pumping of hydrogen ions across biological membranes during chemiosmosis.
punnett square
terminator
enantiomers
proton motive force
33. A cell organelle constructed in the nucleolus and functioning as the site of protein synthesis in the cytoplasm; consists of rRNA and protein molecules - which make up two subunits.
diffusion
endoplasmic reticulum
dominant allele
ribosomes
34. The protein shell that encloses a viral genome. It may be rod-shaped - polyhedral - or more complete in shape.
cell fractionation
collagen
reducing agent
capsid
35. An aberration in chromosome structure resulting from an error in meiosis or mutagens; duplication of a portion of a chromosome resulting from fusion with a fragment from a homologous chromosome.
Cell-cell recognition
tumor
duplication
trait
36. The disruption of a cell and separation of its organelles by centrifugation.
mitotic spindle
cell fractionation
photorespiration
cyclin
37. A basic principle in biology stating that genes are located on chromosomes and that the behavior of chromosomes during meiosis accounts for inheritance patterns.
chromosome theory of inheritance
phospholipid
karyotype
monohybrids
38. A tiny membranous sac in a cell's cytoplasm carrying molecules produced by the cell.
absorption spectrum
transport vesicles
recessive allele
gated channels
39. The second subphase of mitosis - in which discrete chromosomes consisting of identical sister chromatids appear - the nuclear envelope fragments - and the spindle microtubules attach to the kinetochores of the chromosomes.
mesophyll cell
prometaphase
ligands
gated channels
40. A reaction in which two molecules become covalently bonded to each other through the loss of a small molecule - usually water; also called dehydration reaction.
osmosis
buffers
chlorophyll B
condensation reaction
41. The complex of DNA and proteins that makes up a eukaryotic chromosome. When the cell is not dividing -exists as a mass of very long - thin fibers that are not visible with a light microscope.
C4 plants
chromatin
microtubules
carbonyl groups
42. An organism that makes ATP by aerobic respiration if oxygen is present but that switches to fermentation under anaerobic conditions.
faculative anaerobes
feedback inhibition
visible light
somatic cells
43. 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
beta (B) pleated sheet
prophase
concentration gradient
replication fork
44. A discrete unit of hereditary information consisting of a specific nucleotide sequence in DNA (or RNA - in some viruses).
cell plate
plasma membrane
clone
genes
45. A type of endocytosis in which the cell ingests extracellular fluid and its dissolved solutes.
transfer RNA
pinocytosis
integral proteins
phospholipids
46. Sites of photosynthesis. convert solar energy--> chemical energy by absorbing sunlight and using it to drive the synthesis of organic compounds from CO2 and H20
isotonic
fatty acid
chloroplast
thermodynamics
47. (1) A lineage of genetically identical individuals or cells. (2) In popular usage - a single individual organism that is genetically identical to another individual. (3) As a verb - to make one or more genetic replicas of an individual or cell. See a
gap junctions
clone
noncyclic electron flow
polymer
48. A protein channel in a cell membrane that opens or closes in response to a particular stimulus.
epistasis
gated channels
flaccid (limp)
trisomic
49. A specialized molecule sharing the reaction center with the chlorophyll a molecule; it accepts an electron from the chlorophyll a molecule.
Cell-cell recognition
primary electron acceptor
pleiotropy
collagen
50. Sequence of events in the life of a cell - from its origin in the division of a parent cell until its own division into two composed of M - G1 - S - and G2 phases
alcohol fermentation
cell cycle
pyrimidines
peripheral proteins