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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. The female part of a flower composed of ovary and style and stigma and ovules
anabolism
pistil
endosymbiont hypothesis
active transport
2. Stalk that supports the flower
microvilli
alleles
pedicel
photolysis
3. Tubes - One of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope; play a role in cell division.
cell
electron transport
centrioles
ribosomes
4. Sticky portion at the top of the style which traps pollen
mitosis
stigma
gametes
biennial
5. Double-stranded chains of proteins which give structure to the cell
transduction
microtubules
microfilaments
eukoryotic cells
6. The organ that bears the ovules of a flower - base of the pistil
endocytic vesicles
ovary
endoplasmic reticulum
ovules
7. Membrane-bound organelle that stores water and soluble substances
mutation
vacuole
filament
enzymes
8. Theory which suggests mitochondria and chloroplasts were once prokaryotic organisms in a symbiotic relationship with eykorytic cells
gametes
endosymbiont hypothesis
cytokinesis
gymnosperms
9. The complete genetic material contained in an individual
endosymbiont hypothesis
perennial
genome
anaphase
10. Classication of plant which produce seeds which are 'naked' (in cones)
cytoskeleton
chlorophyll
gymnosperms
stroma
11. In photosynthesis - this is the splitting of water by light
fermentation
vacuole
shoot apex
photolysis
12. Production of a chemical compound by a living organism
stamen
biosynthesis
vacuole
active site
13. Disk-like plates which are the site of photosynthesis in chloroplasts
cell
chromatids
grana
vascular plants
14. Anaerobic cellular respiration in which pyruvic acid is broken down into end products such as lactic acid
eukoryotic cells
fermentation
interphase
golgi apparatus
15. Used to examine tiny cell organelles
biennial
metaphase
electron microscope
post-transcriptional processing
16. The regular sequence of growth and division that cells undergo
reduction
cell cycle
endoplasmic reticulum
virus
17. A period during which the cell grows - G1 - copies its DNA - S - and synthesizes proteins - G2
nucleosome
biennial
stroma
interphase
18. Provides structural support to a cell composed of microtubules - microfilaments - centrioles
diploid
cytoskeleton
ATP
virus
19. Body of a chloroplast containing grana
prokaryotes
transformation
stroma
diploid
20. Structure within ovary of plant that contains egg cells
reduction
interphase
active transport
ovules
21. A substance that retards or stops enzymatic activity
centrioles
prokaryotes
gametes
inhibitor
22. The organic process whereby the DNA sequence in a gene is copied into mRNA
crossing over
cell wall
transcription
electron microscope
23. Formed when cell membrane surrounds a molecule outside the cell and ingests it
cristae
vascular plants
endocytic vesicles
prosthetic group
24. Area where the chromatids of a chromosome are attached
codon
cell wall
centromere
genome
25. Process of building up complex materials (proteins) from simple materials
annuals
stroma
anabolism
inhibitor
26. Modifications of pre-mRNA that make it into mature mRNA - so that it is ready for protein synthesis
post-transcriptional processing
virus
ovary
crossing over
27. Composed of a bilayer of lipids embedded with globular proteins
vacuole
prophase
cell membrane
electron microscope
28. Living thing
transcription
anther
organism
active transport
29. The final stage of mitosis or meiosis - during which a nuclear membrane forms around each set of new chromosomes
telophase
electron microscope
cristae
microfilaments
30. Bead-like structure in chromatin - composed of a short length of DNA wrapped around a core of histone proteins
nucleosome
biosynthesis
post-transcriptional processing
chromatids
31. A substance that must join with the enzyme to enable it to fit the substrate
chlorophyll
perennial
tonoplast
cofactor
32. Classification of plant which forms seeds inside a protective chamber called an ovary - inside a flower
cristae
electron microscope
homologs
angiosperms
33. Reproductive cells - have only half the number of chromosomes
transformation
meiosis
gametes
gene
34. A cell having only one complete set of chromosomes
pedicel
haploid
vacuole
filament
35. Reducing the ploidy level of nucleus from diploid to haploid in meiotic cell division
reduction
nucleosome
facilitated diffusion
chromatids
36. Projections on cell membrane increase surface area
vascular plants
homologs
haploid
microvilli
37. Classification of plant which survives only a single season
pedicel
annuals
stroma
eukoryotic cells
38. A long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix
electron transport
prophase
biosynthesis
DNA
39. Cell division which produces two identical cells
fermentation
enzymes
microfilaments
mitosis
40. Passive transport of materials across a plasma membrane by transport proteins embedded in the plasma membrane
centrioles
facilitated diffusion
chlorophyll
chromatin
41. Packaged protein or other substance produced by golgi apparatus/endoplasmic reticulum
organism
genome
ovules
secretory vesicles
42. Transport of a substance across a cell membrane against the concentration gradient
active transport
codon
gene
virus
43. A non-protein - but organic - molecule (such as vitamin) that is covalently bound to an enzyme as part of the active site
anaphase
prosthetic group
carbon dioxide fixation
interphase
44. The stalk of a stamen that supports the anther
mitosis
filament
cell membrane
genome
45. Stores - packages and ships proteins
grana
microvilli
anaphase
golgi apparatus
46. Stage of cellular respiration that finishes the breakdown of pyruvic acid molecules to carbon dioxide - releasing energy
vascular plants
stamen
krebs cycle
transformation
47. Cell division that produces reproductive cells in sexually reproducing organisms
crossing over
meiosis
chlorophyll
perennial
48. Pores which allows materials to move in and out of the cell nucleus
microtubules
gametes
telophase
nuclear pores
49. The process of transfering genetic material from one cell to another
vacuole
nucleosome
transduction
enzymes
50. A cell having two sets of chromosomes or twice the haploid number
cell
lysosomes
diploid
gene