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Test your basic knowledge |
CLEP Natural Science
Start Test
Study First
Subjects
:
clep
,
science
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. (adenosine triphosphate) main energy source that cells use for most of their work
centrioles
ATP
golgi apparatus
substrate
2. Classification of plant which forms seeds inside a protective chamber called an ovary - inside a flower
transduction
gymnosperms
angiosperms
grana
3. Has a nucleus - has organelles or other cell parts
eukoryotic cells
cell wall
stroma
nuclear pores
4. Sticky portion at the top of the style which traps pollen
filament
stigma
grana
angiosperms
5. The interchange of sections between pairing homologous chromosomes during the prophase of meiosis
crossing over
transduction
tonoplast
nucleosome
6. Proteins that act as biological catalysts
metaphase
enzymes
lysosomes
nuclear pores
7. Set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes
metabolism
telophase
cell cycle
codon
8. A cell having two sets of chromosomes or twice the haploid number
metaphase
diploid
gymnosperms
biennial
9. Small structures in the cytoplasm of a cell that do special jobs
haploid
pistil
transformation
organelles
10. Classification of plant which survives only a single season
annuals
pedicel
inhibitor
ribosomes
11. Anaerobic cellular respiration in which pyruvic acid is broken down into end products such as lactic acid
microfilaments
active site
transcription
fermentation
12. Theory which suggests mitochondria and chloroplasts were once prokaryotic organisms in a symbiotic relationship with eykorytic cells
cytokinesis
endosymbiont hypothesis
biennial
transformation
13. The final stage of mitosis or meiosis - during which a nuclear membrane forms around each set of new chromosomes
stamen
cell
telophase
anabolism
14. Plants that grow year after year
perennial
vacuole
catabolism
fermentation
15. Small - dense region within most nuclei in which the assembly of RNA proteins begins
anabolism
ATP
DNA
nucleolus
16. A substance that must join with the enzyme to enable it to fit the substrate
endoplasmic reticulum
gametes
perennial
cofactor
17. Hollow tubes of protein about 25 nanometers in diameter - support the cell and moves organelles within the cell
anther
cristae
microtubules
cell membrane
18. Have tissues made of cells that transport water and nutrients throughout the plant
pedicel
organism
metabolism
vascular plants
19. Composed of a bilayer of lipids embedded with globular proteins
cell membrane
endosymbiont hypothesis
mitochondria
gametes
20. The organ that bears the ovules of a flower - base of the pistil
ribosomes
ovary
transformation
alleles
21. Process of building up complex materials (proteins) from simple materials
anabolism
active transport
biosynthesis
haploid
22. Passive transport of materials across a plasma membrane by transport proteins embedded in the plasma membrane
ribosomes
facilitated diffusion
mutation
ovules
23. Different forms of a gene
alleles
metaphase
cytokinesis
cell membrane
24. Vacuole membrane
tonoplast
stroma
transcription
centromere
25. Body of a chloroplast containing grana
gene
stroma
grana
anabolism
26. Living thing
cell cycle
ribosomes
cell membrane
organism
27. Green pigment contained in the grana
translation
chlorophyll
haploid
interphase
28. The stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle
diploid
anaphase
ATP
gymnosperms
29. Stalk that supports the flower
mitosis
pedicel
transformation
DNA
30. The process of transfering genetic material from one cell to another
electron transport
telophase
centrioles
transduction
31. In photosynthesis - this is the splitting of water by light
krebs cycle
stigma
photolysis
shoot apex
32. The stalk of a stamen that supports the anther
biennial
cytoskeleton
transcription
filament
33. The substance acted upon by an enzyme
substrate
filament
meiosis
prophase
34. The male reproductive organ of a flower consisting of anther - filament - and pollen
inhibitor
stroma
stamen
chromatin
35. Transport of a substance across a cell membrane against the concentration gradient
translation
active transport
facilitated diffusion
anther
36. Membrane-bound organelle that stores water and soluble substances
microfilaments
active transport
fermentation
vacuole
37. Used to examine tiny cell organelles
centrioles
electron microscope
endocytic vesicles
haploid
38. Cell division that produces reproductive cells in sexually reproducing organisms
cristae
gymnosperms
meiosis
lysosomes
39. Pores which allows materials to move in and out of the cell nucleus
prokaryotes
nuclear pores
electron transport
eukoryotic cells
40. Bead-like structure in chromatin - composed of a short length of DNA wrapped around a core of histone proteins
nucleosome
inhibitor
perennial
endocytic vesicles
41. Consists of DNA tightly coiled around proteins
gymnosperms
metaphase
stamen
chromatin
42. Sequence of DNA that codes for a protein and thus determines a trait
gene
photolysis
post-transcriptional processing
mitochondria
43. Reproductive cells - have only half the number of chromosomes
gametes
codon
grana
chlorophyll
44. The part of an enzyme where the chemical reaction occurs
exocytosis
cytoskeleton
active site
vascular plants
45. Double-stranded chains of proteins which give structure to the cell
telophase
microfilaments
reduction
ribosomes
46. Site of protein synthesis. Free ribosomes - float unattached; attached ribosomes - attached to the ER
cell membrane
ribosomes
genome
microtubules
47. Numerous folds in the inner membrane of a mitochondrion - the site of cellular respiration
biosynthesis
cristae
pistil
nucleolus
48. A non-protein - but organic - molecule (such as vitamin) that is covalently bound to an enzyme as part of the active site
prokaryotes
prosthetic group
mitosis
cytokinesis
49. Classification of plant whose life cycle survives two seasons
prophase
biennial
crossing over
ribosomes
50. Cell division which produces two identical cells
haploid
alleles
mitosis
stamen