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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. A cell having only one complete set of chromosomes
mitosis
haploid
gene
perennial
2. A non-protein - but organic - molecule (such as vitamin) that is covalently bound to an enzyme as part of the active site
nuclear pores
prosthetic group
glycolysis
vascular plants
3. Cell division which produces two identical cells
eukoryotic cells
mitosis
angiosperms
ATP
4. Disk-like plates which are the site of photosynthesis in chloroplasts
DNA
grana
prophase
translation
5. Production of a chemical compound by a living organism
biosynthesis
grana
angiosperms
chlorophyll
6. 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
genome
endoplasmic reticulum
catabolism
anther
7. The female part of a flower composed of ovary and style and stigma and ovules
photolysis
organism
gene
pistil
8. Stage of cellular respiration that finishes the breakdown of pyruvic acid molecules to carbon dioxide - releasing energy
mutation
cell
krebs cycle
microvilli
9. Process of building up complex materials (proteins) from simple materials
gymnosperms
anabolism
crossing over
inhibitor
10. The organic process whereby the DNA sequence in a gene is copied into mRNA
organism
photolysis
mitochondria
transcription
11. Tubes - One of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope; play a role in cell division.
photolysis
ribosomes
exocytosis
centrioles
12. Hollow tubes of protein about 25 nanometers in diameter - support the cell and moves organelles within the cell
cytokinesis
interphase
microtubules
ribosomes
13. Particle made up of DNA - RNA - protein - and in some cases lipids that can only replicate only by infecting living cells
endosymbiont hypothesis
organelles
gymnosperms
virus
14. Living thing
biosynthesis
organism
endoplasmic reticulum
cell cycle
15. Green pigment contained in the grana
chlorophyll
centrioles
carbon dioxide fixation
mitochondria
16. Anaerobic cellular respiration in which pyruvic acid is broken down into end products such as lactic acid
stigma
prophase
fermentation
eukoryotic cells
17. Set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes
centrioles
metabolism
endocytic vesicles
pistil
18. Bead-like structure in chromatin - composed of a short length of DNA wrapped around a core of histone proteins
translation
transformation
nucleosome
gametes
19. Reducing the ploidy level of nucleus from diploid to haploid in meiotic cell division
facilitated diffusion
filament
virus
reduction
20. Cell organelle filled with enyzmes need to break down certain materials in the cells
microfilaments
cell cycle
lysosomes
microvilli
21. The second phase of mitosis - during which the chromosomes line up across the center of the cell
metaphase
gymnosperms
electron microscope
gametes
22. Part of stem where growth occurs - contains meristem tissue that is capable of quick growth
shoot apex
pedicel
lysosomes
tonoplast
23. The first stage of mitosis - forming spindle fibres attached to the centromere
cell wall
prophase
prosthetic group
reduction
24. Photosynthetic reaction in which carbon dioxide is attached to an organic compound (glucose - polysaccharides)
fermentation
cell cycle
carbon dioxide fixation
post-transcriptional processing
25. Have tissues made of cells that transport water and nutrients throughout the plant
mitochondria
vascular plants
gene
fermentation
26. Numerous folds in the inner membrane of a mitochondrion - the site of cellular respiration
mutation
cristae
nucleosome
nucleolus
27. Classication of plant which produce seeds which are 'naked' (in cones)
stigma
microfilaments
gymnosperms
angiosperms
28. The process of transfering genetic material from one cell to another
glycolysis
interphase
transduction
cell wall
29. Pores which allows materials to move in and out of the cell nucleus
prosthetic group
anabolism
nuclear pores
stamen
30. Classification of plant which survives only a single season
DNA
codon
inhibitor
annuals
31. Structure within ovary of plant that contains egg cells
ovules
crossing over
eukoryotic cells
gymnosperms
32. Small - dense region within most nuclei in which the assembly of RNA proteins begins
vascular plants
virus
nuclear pores
nucleolus
33. Division of the cytoplasm during cell division - new cell is formed
exocytosis
krebs cycle
cytokinesis
fermentation
34. Classification of plant which forms seeds inside a protective chamber called an ovary - inside a flower
chromatids
centromere
angiosperms
vacuole
35. Body of a chloroplast containing grana
stigma
metaphase
mutation
stroma
36. Plants that grow year after year
organelles
eukoryotic cells
chromatin
perennial
37. The stalk of a stamen that supports the anther
filament
golgi apparatus
pedicel
homologs
38. Cell division that produces reproductive cells in sexually reproducing organisms
alleles
telophase
cell cycle
meiosis
39. Packaged protein or other substance produced by golgi apparatus/endoplasmic reticulum
secretory vesicles
cofactor
chlorophyll
vascular plants
40. The stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle
facilitated diffusion
prosthetic group
pedicel
anaphase
41. The part of an enzyme where the chemical reaction occurs
transformation
substrate
metaphase
active site
42. Site of protein synthesis. Free ribosomes - float unattached; attached ribosomes - attached to the ER
anther
ribosomes
crossing over
filament
43. Stalk that supports the flower
pedicel
stigma
stamen
mitochondria
44. Consists of DNA tightly coiled around proteins
chromatids
annuals
chromatin
centromere
45. A substance that must join with the enzyme to enable it to fit the substrate
cofactor
secretory vesicles
catabolism
angiosperms
46. Process by which a cell releases large amounts of material
exocytosis
prosthetic group
gene
cell
47. Small structures in the cytoplasm of a cell that do special jobs
translation
endocytic vesicles
transduction
organelles
48. The final stage of mitosis or meiosis - during which a nuclear membrane forms around each set of new chromosomes
prokaryotes
chlorophyll
telophase
nucleolus
49. Proteins that act as biological catalysts
enzymes
ovary
chromatids
virus
50. Cells that lack a membrane-bound nucleus and membrane-bound organelles
prosthetic group
meiosis
prokaryotes
nuclear pores