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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. Classification of plant whose life cycle survives two seasons
centromere
eukoryotic cells
biennial
annuals
2. The part of the stamen that contains pollen
anther
prosthetic group
gene
tonoplast
3. Tubes - One of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope; play a role in cell division.
cell wall
centrioles
diploid
meiosis
4. Structure within ovary of plant that contains egg cells
krebs cycle
vascular plants
ovules
metaphase
5. Sequence of DNA that codes for a protein and thus determines a trait
gene
lysosomes
pedicel
reduction
6. The regular sequence of growth and division that cells undergo
cell cycle
endosymbiont hypothesis
glycolysis
angiosperms
7. Disk-like plates which are the site of photosynthesis in chloroplasts
grana
glycolysis
transformation
organism
8. Vacuole membrane
haploid
tonoplast
cristae
transduction
9. Particle made up of DNA - RNA - protein - and in some cases lipids that can only replicate only by infecting living cells
chromatids
endocytic vesicles
chlorophyll
virus
10. Stores - packages and ships proteins
shoot apex
cristae
nucleosome
golgi apparatus
11. Part of stem where growth occurs - contains meristem tissue that is capable of quick growth
shoot apex
cytokinesis
gymnosperms
transduction
12. Theory which suggests mitochondria and chloroplasts were once prokaryotic organisms in a symbiotic relationship with eykorytic cells
virus
endosymbiont hypothesis
enzymes
shoot apex
13. Process of building up complex materials (proteins) from simple materials
diploid
cristae
anabolism
vascular plants
14. Classication of plant which produce seeds which are 'naked' (in cones)
gymnosperms
transcription
secretory vesicles
endocytic vesicles
15. Have tissues made of cells that transport water and nutrients throughout the plant
vascular plants
endosymbiont hypothesis
chromatin
prosthetic group
16. The substance acted upon by an enzyme
mitochondria
cell membrane
electron transport
substrate
17. Small structures in the cytoplasm of a cell that do special jobs
cofactor
organelles
electron microscope
fermentation
18. Living thing
electron microscope
interphase
organism
golgi apparatus
19. Cell division which produces two identical cells
genome
post-transcriptional processing
chromatids
mitosis
20. Site of protein synthesis. Free ribosomes - float unattached; attached ribosomes - attached to the ER
stroma
ribosomes
haploid
cytoskeleton
21. Packaged protein or other substance produced by golgi apparatus/endoplasmic reticulum
gametes
carbon dioxide fixation
transformation
secretory vesicles
22. (adenosine triphosphate) main energy source that cells use for most of their work
electron transport
diploid
ATP
stamen
23. Modifications of pre-mRNA that make it into mature mRNA - so that it is ready for protein synthesis
organism
post-transcriptional processing
exocytosis
genome
24. The male reproductive organ of a flower consisting of anther - filament - and pollen
carbon dioxide fixation
cell wall
stamen
stigma
25. A substance that retards or stops enzymatic activity
cell
golgi apparatus
inhibitor
microtubules
26. Stalk that supports the flower
organism
cell membrane
pedicel
telophase
27. Stage of cellular respiration that finishes the breakdown of pyruvic acid molecules to carbon dioxide - releasing energy
filament
organelles
homologs
krebs cycle
28. Membrane-bound organelle that stores water and soluble substances
vacuole
endocytic vesicles
secretory vesicles
ovary
29. Projections on cell membrane increase surface area
gene
catabolism
microvilli
DNA
30. 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)
transduction
enzymes
electron transport
cofactor
31. Sticky portion at the top of the style which traps pollen
shoot apex
stigma
stroma
catabolism
32. Numerous folds in the inner membrane of a mitochondrion - the site of cellular respiration
cytokinesis
cristae
gametes
endocytic vesicles
33. The second phase of mitosis - during which the chromosomes line up across the center of the cell
metaphase
homologs
secretory vesicles
chromatin
34. Body of a chloroplast containing grana
interphase
fermentation
stroma
mitochondria
35. Double-stranded chains of proteins which give structure to the cell
angiosperms
post-transcriptional processing
microfilaments
stigma
36. Provides structural support to a cell composed of microtubules - microfilaments - centrioles
crossing over
stigma
anabolism
cytoskeleton
37. The stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle
anaphase
microfilaments
nucleolus
ATP
38. Modification of a cell by the incorporation of exogenous DNA
endocytic vesicles
transformation
organism
interphase
39. The complete genetic material contained in an individual
ribosomes
DNA
genome
glycolysis
40. The stalk of a stamen that supports the anther
filament
microvilli
microtubules
pistil
41. Three-nucleotide sequence on messenger RNA that codes for a single amino acid
homologs
shoot apex
vacuole
codon
42. Pores which allows materials to move in and out of the cell nucleus
translation
homologs
post-transcriptional processing
nuclear pores
43. In photosynthesis - this is the splitting of water by light
perennial
endocytic vesicles
stroma
photolysis
44. Plants that grow year after year
perennial
cell cycle
stamen
catabolism
45. Powerhouse of the cell - organelle that is the site of ATP (energy) production
prosthetic group
mitochondria
stigma
active site
46. Reducing the ploidy level of nucleus from diploid to haploid in meiotic cell division
nuclear pores
golgi apparatus
reduction
ovary
47. A cell having two sets of chromosomes or twice the haploid number
active transport
diploid
annuals
gene
48. Has a nucleus - has organelles or other cell parts
cell cycle
pedicel
eukoryotic cells
stamen
49. Transport of a substance across a cell membrane against the concentration gradient
anaphase
active transport
post-transcriptional processing
anabolism
50. Different forms of a gene
centrioles
shoot apex
alleles
endosymbiont hypothesis