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. A long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix
active site
DNA
cell cycle
chromatids
2. Reducing the ploidy level of nucleus from diploid to haploid in meiotic cell division
centrioles
krebs cycle
reduction
gametes
3. Plants that grow year after year
prosthetic group
perennial
anaphase
prophase
4. The process whereby genetic information coded in messenger RNA directs the formation of a specific protein at a ribosome in the cytoplasm through tRNA
active transport
translation
golgi apparatus
stamen
5. Packaged protein or other substance produced by golgi apparatus/endoplasmic reticulum
substrate
secretory vesicles
cofactor
microtubules
6. Stalk that supports the flower
organism
haploid
pedicel
exocytosis
7. In photosynthesis - this is the splitting of water by light
facilitated diffusion
photolysis
biosynthesis
alleles
8. Stage of cellular respiration that finishes the breakdown of pyruvic acid molecules to carbon dioxide - releasing energy
prophase
active transport
krebs cycle
homologs
9. The organ that bears the ovules of a flower - base of the pistil
active site
reduction
ovary
cytoskeleton
10. The stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle
chromatids
anaphase
endosymbiont hypothesis
anther
11. Hollow tubes of protein about 25 nanometers in diameter - support the cell and moves organelles within the cell
mitochondria
active site
inhibitor
microtubules
12. Smallest unit of most living things
mitochondria
cell
gene
tonoplast
13. Proteins that act as biological catalysts
tonoplast
enzymes
angiosperms
DNA
14. Matching Chromosomes that are similar but not identical
cytoskeleton
tonoplast
homologs
chlorophyll
15. Part of stem where growth occurs - contains meristem tissue that is capable of quick growth
filament
mitochondria
shoot apex
perennial
16. Reproductive cells - have only half the number of chromosomes
cofactor
gametes
prokaryotes
anaphase
17. Tubes - One of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope; play a role in cell division.
post-transcriptional processing
pistil
centrioles
exocytosis
18. Site of protein synthesis. Free ribosomes - float unattached; attached ribosomes - attached to the ER
active transport
post-transcriptional processing
ribosomes
metaphase
19. The regular sequence of growth and division that cells undergo
prophase
cell cycle
ATP
carbon dioxide fixation
20. The female part of a flower composed of ovary and style and stigma and ovules
glycolysis
pistil
gene
catabolism
21. Small structures in the cytoplasm of a cell that do special jobs
organism
cofactor
gymnosperms
organelles
22. Cell division that produces reproductive cells in sexually reproducing organisms
meiosis
mitochondria
shoot apex
eukoryotic cells
23. The final stage of mitosis or meiosis - during which a nuclear membrane forms around each set of new chromosomes
cytoskeleton
cell cycle
telophase
prophase
24. The part of the stamen that contains pollen
carbon dioxide fixation
anther
perennial
shoot apex
25. Has a nucleus - has organelles or other cell parts
endocytic vesicles
grana
eukoryotic cells
nucleosome
26. (adenosine triphosphate) main energy source that cells use for most of their work
cell cycle
nuclear pores
substrate
ATP
27. Anaerobic cellular respiration in which pyruvic acid is broken down into end products such as lactic acid
fermentation
chromatin
cytokinesis
electron transport
28. Classification of plant which forms seeds inside a protective chamber called an ovary - inside a flower
genome
angiosperms
anaphase
carbon dioxide fixation
29. Numerous folds in the inner membrane of a mitochondrion - the site of cellular respiration
transduction
cristae
transformation
tonoplast
30. The male reproductive organ of a flower consisting of anther - filament - and pollen
stamen
meiosis
chromatin
alleles
31. Projections on cell membrane increase surface area
active transport
metabolism
microvilli
shoot apex
32. Cells that lack a membrane-bound nucleus and membrane-bound organelles
enzymes
prokaryotes
electron microscope
anther
33. Consists of DNA tightly coiled around proteins
chromatin
diploid
meiosis
anaphase
34. Powerhouse of the cell - organelle that is the site of ATP (energy) production
mitochondria
crossing over
centromere
homologs
35. The organic process whereby the DNA sequence in a gene is copied into mRNA
alleles
mitochondria
transcription
codon
36. Production of a chemical compound by a living organism
perennial
biosynthesis
shoot apex
cell membrane
37. A cell having two sets of chromosomes or twice the haploid number
tonoplast
metaphase
stigma
diploid
38. Change in a DNA sequence that affects genetic information
centromere
cytoskeleton
microfilaments
mutation
39. Membrane-bound organelle that stores water and soluble substances
microtubules
cristae
vacuole
krebs cycle
40. Process of building up complex materials (proteins) from simple materials
organism
krebs cycle
anabolism
microtubules
41. Classification of plant whose life cycle survives two seasons
ribosomes
active transport
biennial
inhibitor
42. Used to examine tiny cell organelles
genome
transcription
fermentation
electron microscope
43. Pores which allows materials to move in and out of the cell nucleus
nuclear pores
angiosperms
gene
prophase
44. The stalk of a stamen that supports the anther
inhibitor
filament
endocytic vesicles
organism
45. A substance that must join with the enzyme to enable it to fit the substrate
transformation
cofactor
biennial
interphase
46. Cell organelle filled with enyzmes need to break down certain materials in the cells
lysosomes
eukoryotic cells
chlorophyll
post-transcriptional processing
47. 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
endoplasmic reticulum
prophase
fermentation
transduction
48. Photosynthetic reaction in which carbon dioxide is attached to an organic compound (glucose - polysaccharides)
centromere
carbon dioxide fixation
prophase
chromatids
49. Stores - packages and ships proteins
genome
crossing over
mutation
golgi apparatus
50. Body of a chloroplast containing grana
DNA
organism
stroma
gene