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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. Powerhouse of the cell - organelle that is the site of ATP (energy) production
mitochondria
golgi apparatus
post-transcriptional processing
facilitated diffusion
2. The second phase of mitosis - during which the chromosomes line up across the center of the cell
metaphase
centrioles
gametes
biosynthesis
3. Photosynthetic reaction in which carbon dioxide is attached to an organic compound (glucose - polysaccharides)
stigma
carbon dioxide fixation
transduction
electron transport
4. Sequence of DNA that codes for a protein and thus determines a trait
ATP
cell membrane
gene
pedicel
5. Double-stranded chains of proteins which give structure to the cell
electron transport
pistil
microfilaments
gymnosperms
6. Plants that grow year after year
perennial
chromatin
nucleolus
grana
7. Part of stem where growth occurs - contains meristem tissue that is capable of quick growth
carbon dioxide fixation
filament
centrioles
shoot apex
8. Proteins that act as biological catalysts
chlorophyll
enzymes
mitochondria
inhibitor
9. In photosynthesis - this is the splitting of water by light
perennial
photolysis
chlorophyll
centromere
10. Transport of a substance across a cell membrane against the concentration gradient
biennial
anther
cell cycle
active transport
11. Change in a DNA sequence that affects genetic information
mutation
anabolism
stroma
photolysis
12. Classification of plant whose life cycle survives two seasons
active transport
biennial
diploid
prosthetic group
13. Division of the cytoplasm during cell division - new cell is formed
microfilaments
gene
cristae
cytokinesis
14. Particle made up of DNA - RNA - protein - and in some cases lipids that can only replicate only by infecting living cells
microfilaments
endocytic vesicles
virus
pedicel
15. Breakdown of more complex substances into simpler ones with release of energy
annuals
metabolism
post-transcriptional processing
catabolism
16. A cell having only one complete set of chromosomes
haploid
post-transcriptional processing
golgi apparatus
endocytic vesicles
17. Bead-like structure in chromatin - composed of a short length of DNA wrapped around a core of histone proteins
cytokinesis
biennial
nucleosome
angiosperms
18. Used to examine tiny cell organelles
genome
grana
virus
electron microscope
19. The process whereby genetic information coded in messenger RNA directs the formation of a specific protein at a ribosome in the cytoplasm through tRNA
organism
active transport
chlorophyll
translation
20. The first stage of mitosis - forming spindle fibres attached to the centromere
post-transcriptional processing
fermentation
prophase
pedicel
21. Production of a chemical compound by a living organism
biosynthesis
krebs cycle
stroma
gymnosperms
22. Classification of plant which forms seeds inside a protective chamber called an ovary - inside a flower
ATP
inhibitor
organelles
angiosperms
23. Consists of DNA tightly coiled around proteins
organelles
chromatin
haploid
exocytosis
24. Vacuole membrane
glycolysis
cristae
tonoplast
gametes
25. Process by which a cell releases large amounts of material
biennial
ovules
prosthetic group
exocytosis
26. The male reproductive organ of a flower consisting of anther - filament - and pollen
stamen
ovary
interphase
nucleosome
27. Cell division that produces reproductive cells in sexually reproducing organisms
centrioles
cofactor
tonoplast
meiosis
28. The female part of a flower composed of ovary and style and stigma and ovules
pistil
golgi apparatus
cristae
cytokinesis
29. Packaged protein or other substance produced by golgi apparatus/endoplasmic reticulum
cell
endoplasmic reticulum
centromere
secretory vesicles
30. Set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes
metabolism
centromere
cell cycle
cofactor
31. An internal membrane system in which components of cell membrane and some proteins are constructed. rough - instrumental in protein synthesis; smooth - processes lipids fats and steroids
enzymes
endoplasmic reticulum
reduction
cofactor
32. The complete genetic material contained in an individual
centromere
ribosomes
vascular plants
genome
33. (adenosine triphosphate) main energy source that cells use for most of their work
mitochondria
transformation
homologs
ATP
34. Cell organelle filled with enyzmes need to break down certain materials in the cells
catabolism
meiosis
annuals
lysosomes
35. Passive transport of materials across a plasma membrane by transport proteins embedded in the plasma membrane
pedicel
codon
microvilli
facilitated diffusion
36. A non-protein - but organic - molecule (such as vitamin) that is covalently bound to an enzyme as part of the active site
anaphase
stigma
reduction
prosthetic group
37. A substance that must join with the enzyme to enable it to fit the substrate
cofactor
interphase
annuals
prosthetic group
38. Site of protein synthesis. Free ribosomes - float unattached; attached ribosomes - attached to the ER
chlorophyll
biennial
telophase
ribosomes
39. Different forms of a gene
centrioles
gymnosperms
metaphase
alleles
40. The organic process whereby the DNA sequence in a gene is copied into mRNA
translation
cofactor
meiosis
transcription
41. Composed of a bilayer of lipids embedded with globular proteins
gametes
biennial
cell membrane
electron microscope
42. Process of building up complex materials (proteins) from simple materials
interphase
mitochondria
microvilli
anabolism
43. Green pigment contained in the grana
transformation
shoot apex
ovary
chlorophyll
44. Cells that lack a membrane-bound nucleus and membrane-bound organelles
nucleolus
organism
prokaryotes
metabolism
45. Area where the chromatids of a chromosome are attached
centromere
genome
biosynthesis
active transport
46. Stores - packages and ships proteins
reduction
ovules
golgi apparatus
perennial
47. Have tissues made of cells that transport water and nutrients throughout the plant
exocytosis
vascular plants
translation
prokaryotes
48. Has a nucleus - has organelles or other cell parts
metabolism
eukoryotic cells
metaphase
genome
49. Uses electrons from the Krebs cycle to change ADP to ATP (cytochromes on surface of cristae of mitochondria - contain protein and heme (iron containing) groups - electrons pass along them and ATP is produced)
gene
prophase
electron transport
diploid
50. The part of an enzyme where the chemical reaction occurs
golgi apparatus
active site
gymnosperms
cytoskeleton
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