SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
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. Body of a chloroplast containing grana
carbon dioxide fixation
endocytic vesicles
cofactor
stroma
2. Modification of a cell by the incorporation of exogenous DNA
ovules
virus
transformation
nuclear pores
3. Classification of plant whose life cycle survives two seasons
stigma
biennial
cofactor
chlorophyll
4. The interchange of sections between pairing homologous chromosomes during the prophase of meiosis
crossing over
metaphase
active site
inhibitor
5. Reproductive cells - have only half the number of chromosomes
gametes
annuals
interphase
crossing over
6. A non-protein - but organic - molecule (such as vitamin) that is covalently bound to an enzyme as part of the active site
stroma
facilitated diffusion
ovary
prosthetic group
7. The second phase of mitosis - during which the chromosomes line up across the center of the cell
gene
chromatids
metaphase
biosynthesis
8. Different forms of a gene
alleles
facilitated diffusion
tonoplast
post-transcriptional processing
9. In photosynthesis - this is the splitting of water by light
virus
chromatin
photolysis
gymnosperms
10. Two identical chromosomes that split and contain the same genetic material
chlorophyll
endocytic vesicles
chromatids
endoplasmic reticulum
11. Green pigment contained in the grana
ovary
pedicel
chlorophyll
anther
12. Cell division that produces reproductive cells in sexually reproducing organisms
gametes
cell
endoplasmic reticulum
meiosis
13. Consists of DNA tightly coiled around proteins
microfilaments
cell membrane
chromatin
transformation
14. Breakdown of more complex substances into simpler ones with release of energy
alleles
krebs cycle
catabolism
glycolysis
15. Theory which suggests mitochondria and chloroplasts were once prokaryotic organisms in a symbiotic relationship with eykorytic cells
mitosis
pistil
metabolism
endosymbiont hypothesis
16. Classification of plant which survives only a single season
diploid
annuals
photolysis
translation
17. Site of protein synthesis. Free ribosomes - float unattached; attached ribosomes - attached to the ER
lysosomes
ribosomes
microfilaments
perennial
18. Have tissues made of cells that transport water and nutrients throughout the plant
homologs
vascular plants
cytokinesis
microvilli
19. Double-stranded chains of proteins which give structure to the cell
microfilaments
facilitated diffusion
tonoplast
golgi apparatus
20. Hollow tubes of protein about 25 nanometers in diameter - support the cell and moves organelles within the cell
vacuole
transformation
microtubules
pedicel
21. Area where the chromatids of a chromosome are attached
centromere
secretory vesicles
fermentation
ATP
22. Photosynthetic reaction in which carbon dioxide is attached to an organic compound (glucose - polysaccharides)
shoot apex
ovules
carbon dioxide fixation
reduction
23. Living thing
gene
lysosomes
transformation
organism
24. Proteins that act as biological catalysts
krebs cycle
gametes
enzymes
exocytosis
25. Composed of a bilayer of lipids embedded with globular proteins
homologs
cell membrane
ovules
microfilaments
26. Classication of plant which produce seeds which are 'naked' (in cones)
angiosperms
mutation
gymnosperms
inhibitor
27. A cell having two sets of chromosomes or twice the haploid number
annuals
nucleosome
chromatin
diploid
28. Sticky portion at the top of the style which traps pollen
interphase
stigma
endoplasmic reticulum
carbon dioxide fixation
29. Production of a chemical compound by a living organism
biosynthesis
biennial
telophase
chromatids
30. Part of stem where growth occurs - contains meristem tissue that is capable of quick growth
cytoskeleton
prophase
codon
shoot apex
31. The organ that bears the ovules of a flower - base of the pistil
nuclear pores
eukoryotic cells
ovary
photolysis
32. 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
endosymbiont hypothesis
prosthetic group
translation
33. The substance acted upon by an enzyme
substrate
shoot apex
virus
filament
34. Vacuole membrane
anther
tonoplast
electron transport
glycolysis
35. A substance that must join with the enzyme to enable it to fit the substrate
eukoryotic cells
annuals
cytoskeleton
cofactor
36. Tubes - One of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope; play a role in cell division.
centrioles
vacuole
genome
mitosis
37. Classification of plant which forms seeds inside a protective chamber called an ovary - inside a flower
exocytosis
angiosperms
mutation
nuclear pores
38. Membrane-bound organelle that stores water and soluble substances
alleles
vacuole
cell membrane
microvilli
39. The female part of a flower composed of ovary and style and stigma and ovules
centromere
cell
stamen
pistil
40. The final stage of mitosis or meiosis - during which a nuclear membrane forms around each set of new chromosomes
gametes
nucleolus
telophase
cell membrane
41. 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)
substrate
telophase
pedicel
electron transport
42. The part of the stamen that contains pollen
pistil
anther
prosthetic group
photolysis
43. A long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix
DNA
pistil
genome
active site
44. Formed when cell membrane surrounds a molecule outside the cell and ingests it
endocytic vesicles
anabolism
catabolism
eukoryotic cells
45. Powerhouse of the cell - organelle that is the site of ATP (energy) production
metabolism
ribosomes
mitochondria
active site
46. Projections on cell membrane increase surface area
lysosomes
microvilli
ovary
mitochondria
47. Stage of cellular respiration that finishes the breakdown of pyruvic acid molecules to carbon dioxide - releasing energy
cytokinesis
endoplasmic reticulum
vacuole
krebs cycle
48. Stores - packages and ships proteins
golgi apparatus
tonoplast
inhibitor
organelles
49. The male reproductive organ of a flower consisting of anther - filament - and pollen
inhibitor
mitosis
cristae
stamen
50. Disk-like plates which are the site of photosynthesis in chloroplasts
transcription
catabolism
metaphase
grana