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 period during which the cell grows - G1 - copies its DNA - S - and synthesizes proteins - G2
interphase
cell membrane
nucleosome
prokaryotes
2. Classication of plant which produce seeds which are 'naked' (in cones)
gymnosperms
cofactor
golgi apparatus
active site
3. The stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle
haploid
anabolism
anaphase
cell wall
4. The part of an enzyme where the chemical reaction occurs
active site
ATP
glycolysis
photolysis
5. The interchange of sections between pairing homologous chromosomes during the prophase of meiosis
golgi apparatus
endocytic vesicles
crossing over
biennial
6. 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)
photolysis
endosymbiont hypothesis
transcription
electron transport
7. Small - dense region within most nuclei in which the assembly of RNA proteins begins
crossing over
homologs
nucleolus
exocytosis
8. Cell organelle filled with enyzmes need to break down certain materials in the cells
krebs cycle
cell
centrioles
lysosomes
9. Photosynthetic reaction in which carbon dioxide is attached to an organic compound (glucose - polysaccharides)
nucleolus
active site
endocytic vesicles
carbon dioxide fixation
10. Has a nucleus - has organelles or other cell parts
eukoryotic cells
cytoskeleton
fermentation
cell cycle
11. Change in a DNA sequence that affects genetic information
centrioles
mutation
cytokinesis
lysosomes
12. The regular sequence of growth and division that cells undergo
cell cycle
active transport
nucleosome
translation
13. The process whereby genetic information coded in messenger RNA directs the formation of a specific protein at a ribosome in the cytoplasm through tRNA
shoot apex
transcription
translation
nucleosome
14. Plants that grow year after year
cytoskeleton
glycolysis
angiosperms
perennial
15. The substance acted upon by an enzyme
ovules
substrate
annuals
active site
16. The complete genetic material contained in an individual
genome
anabolism
cell
translation
17. The stalk of a stamen that supports the anther
filament
pistil
cytoskeleton
anther
18. Theory which suggests mitochondria and chloroplasts were once prokaryotic organisms in a symbiotic relationship with eykorytic cells
crossing over
stigma
endosymbiont hypothesis
electron transport
19. (adenosine triphosphate) main energy source that cells use for most of their work
nuclear pores
ovules
active site
ATP
20. Hollow tubes of protein about 25 nanometers in diameter - support the cell and moves organelles within the cell
alleles
microtubules
filament
centrioles
21. The organ that bears the ovules of a flower - base of the pistil
transformation
nucleolus
ribosomes
ovary
22. Reducing the ploidy level of nucleus from diploid to haploid in meiotic cell division
biosynthesis
endosymbiont hypothesis
reduction
ovary
23. Anaerobic cellular respiration in which pyruvic acid is broken down into end products such as lactic acid
interphase
facilitated diffusion
virus
fermentation
24. Area where the chromatids of a chromosome are attached
centromere
chromatin
photolysis
eukoryotic cells
25. Tubes - One of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope; play a role in cell division.
centrioles
codon
diploid
inhibitor
26. A long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix
chromatin
tonoplast
DNA
transformation
27. Body of a chloroplast containing grana
stroma
secretory vesicles
substrate
ATP
28. The first stage of mitosis - forming spindle fibres attached to the centromere
cell
chlorophyll
centrioles
prophase
29. 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
prosthetic group
prophase
endoplasmic reticulum
biennial
30. The final stage of mitosis or meiosis - during which a nuclear membrane forms around each set of new chromosomes
endocytic vesicles
carbon dioxide fixation
shoot apex
telophase
31. Stage of cellular respiration that finishes the breakdown of pyruvic acid molecules to carbon dioxide - releasing energy
krebs cycle
endoplasmic reticulum
cell membrane
transcription
32. A substance that retards or stops enzymatic activity
endoplasmic reticulum
nucleosome
genome
inhibitor
33. Consists of DNA tightly coiled around proteins
cofactor
fermentation
chromatin
endoplasmic reticulum
34. Reproductive cells - have only half the number of chromosomes
secretory vesicles
metaphase
gametes
meiosis
35. Classification of plant which forms seeds inside a protective chamber called an ovary - inside a flower
transformation
angiosperms
diploid
anabolism
36. Projections on cell membrane increase surface area
microvilli
active site
chlorophyll
gametes
37. Packaged protein or other substance produced by golgi apparatus/endoplasmic reticulum
metabolism
grana
secretory vesicles
substrate
38. Living thing
organism
pistil
transcription
prosthetic group
39. Process by which a cell releases large amounts of material
exocytosis
microfilaments
lysosomes
electron transport
40. Two identical chromosomes that split and contain the same genetic material
crossing over
centromere
chromatids
homologs
41. Provides structural support to a cell composed of microtubules - microfilaments - centrioles
cytoskeleton
glycolysis
angiosperms
stroma
42. Modification of a cell by the incorporation of exogenous DNA
post-transcriptional processing
transformation
crossing over
cell
43. The female part of a flower composed of ovary and style and stigma and ovules
pistil
homologs
active site
cell
44. Different forms of a gene
alleles
stamen
gene
cell membrane
45. Production of a chemical compound by a living organism
carbon dioxide fixation
biosynthesis
codon
anabolism
46. Proteins that act as biological catalysts
pistil
enzymes
nucleolus
ATP
47. Small structures in the cytoplasm of a cell that do special jobs
exocytosis
organelles
microvilli
electron microscope
48. Membrane-bound organelle that stores water and soluble substances
electron transport
lysosomes
cofactor
vacuole
49. Cells that lack a membrane-bound nucleus and membrane-bound organelles
ovules
catabolism
prokaryotes
electron microscope
50. Double-stranded chains of proteins which give structure to the cell
endocytic vesicles
microfilaments
centromere
catabolism