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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. Projections on cell membrane increase surface area
microvilli
anaphase
cofactor
cell cycle
2. Formed when cell membrane surrounds a molecule outside the cell and ingests it
tonoplast
catabolism
endocytic vesicles
interphase
3. Composed of a bilayer of lipids embedded with globular proteins
prophase
biennial
cell membrane
nucleosome
4. Photosynthetic reaction in which carbon dioxide is attached to an organic compound (glucose - polysaccharides)
golgi apparatus
carbon dioxide fixation
cell membrane
transduction
5. The female part of a flower composed of ovary and style and stigma and ovules
substrate
cytoskeleton
pistil
cell wall
6. The part of the stamen that contains pollen
anther
nucleosome
endoplasmic reticulum
carbon dioxide fixation
7. The stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle
photolysis
anaphase
endocytic vesicles
alleles
8. Small - dense region within most nuclei in which the assembly of RNA proteins begins
prophase
nucleolus
anaphase
DNA
9. Process by which a cell releases large amounts of material
exocytosis
filament
gametes
endosymbiont hypothesis
10. The male reproductive organ of a flower consisting of anther - filament - and pollen
cell cycle
inhibitor
stamen
transcription
11. Bead-like structure in chromatin - composed of a short length of DNA wrapped around a core of histone proteins
translation
nucleosome
ribosomes
ATP
12. Membrane-bound organelle that stores water and soluble substances
endocytic vesicles
perennial
homologs
vacuole
13. Has a nucleus - has organelles or other cell parts
homologs
mitochondria
gametes
eukoryotic cells
14. Powerhouse of the cell - organelle that is the site of ATP (energy) production
mitosis
anabolism
mitochondria
eukoryotic cells
15. Structure within ovary of plant that contains egg cells
ovules
cristae
inhibitor
anabolism
16. The process whereby genetic information coded in messenger RNA directs the formation of a specific protein at a ribosome in the cytoplasm through tRNA
translation
microfilaments
organism
nucleolus
17. Set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes
pistil
enzymes
nuclear pores
metabolism
18. Disk-like plates which are the site of photosynthesis in chloroplasts
chromatin
grana
metabolism
anther
19. Small structures in the cytoplasm of a cell that do special jobs
organism
mitosis
centromere
organelles
20. Have tissues made of cells that transport water and nutrients throughout the plant
vascular plants
electron transport
codon
pedicel
21. The part of an enzyme where the chemical reaction occurs
nucleolus
reduction
cell
active site
22. A substance that must join with the enzyme to enable it to fit the substrate
anabolism
cytokinesis
nuclear pores
cofactor
23. Reproductive cells - have only half the number of chromosomes
stamen
substrate
gametes
enzymes
24. A cell having only one complete set of chromosomes
ATP
glycolysis
ovules
haploid
25. Breakdown of more complex substances into simpler ones with release of energy
gymnosperms
catabolism
endoplasmic reticulum
nucleosome
26. 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)
anabolism
gametes
stamen
electron transport
27. Numerous folds in the inner membrane of a mitochondrion - the site of cellular respiration
active site
vacuole
angiosperms
cristae
28. The regular sequence of growth and division that cells undergo
golgi apparatus
transduction
endosymbiont hypothesis
cell cycle
29. Green pigment contained in the grana
chlorophyll
microfilaments
mitochondria
active transport
30. Modifications of pre-mRNA that make it into mature mRNA - so that it is ready for protein synthesis
homologs
centrioles
post-transcriptional processing
codon
31. Consists of DNA tightly coiled around proteins
chromatin
post-transcriptional processing
DNA
krebs cycle
32. Part of stem where growth occurs - contains meristem tissue that is capable of quick growth
centrioles
prophase
shoot apex
eukoryotic cells
33. Used to examine tiny cell organelles
electron microscope
mitosis
translation
transcription
34. The interchange of sections between pairing homologous chromosomes during the prophase of meiosis
DNA
cofactor
crossing over
codon
35. Pores which allows materials to move in and out of the cell nucleus
nuclear pores
interphase
organelles
ovules
36. The organic process whereby the DNA sequence in a gene is copied into mRNA
electron transport
metabolism
transcription
interphase
37. Production of a chemical compound by a living organism
biosynthesis
pistil
glycolysis
chlorophyll
38. Smallest unit of most living things
cell
cristae
meiosis
glycolysis
39. Three-nucleotide sequence on messenger RNA that codes for a single amino acid
microtubules
codon
catabolism
gymnosperms
40. Plants that grow year after year
cofactor
centromere
organism
perennial
41. The process of transfering genetic material from one cell to another
vacuole
substrate
transduction
stamen
42. Classication of plant which produce seeds which are 'naked' (in cones)
gymnosperms
transcription
mitochondria
transformation
43. The first stage of mitosis - forming spindle fibres attached to the centromere
endocytic vesicles
prophase
chromatids
gametes
44. Stage of cellular respiration that finishes the breakdown of pyruvic acid molecules to carbon dioxide - releasing energy
DNA
cytoskeleton
krebs cycle
gametes
45. Cell organelle filled with enyzmes need to break down certain materials in the cells
active transport
gene
carbon dioxide fixation
lysosomes
46. Area where the chromatids of a chromosome are attached
stigma
cytoskeleton
centromere
catabolism
47. A non-protein - but organic - molecule (such as vitamin) that is covalently bound to an enzyme as part of the active site
prosthetic group
gymnosperms
mitochondria
anabolism
48. Sequence of DNA that codes for a protein and thus determines a trait
gene
exocytosis
homologs
haploid
49. Site of protein synthesis. Free ribosomes - float unattached; attached ribosomes - attached to the ER
golgi apparatus
homologs
ribosomes
ovules
50. Two identical chromosomes that split and contain the same genetic material
codon
gametes
substrate
chromatids
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