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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 substance that must join with the enzyme to enable it to fit the substrate
cofactor
electron transport
virus
haploid
2. Used to examine tiny cell organelles
gene
photolysis
electron microscope
cell
3. Cell organelle filled with enyzmes need to break down certain materials in the cells
fermentation
lysosomes
organelles
gene
4. The female part of a flower composed of ovary and style and stigma and ovules
pistil
glycolysis
cell wall
virus
5. Has a nucleus - has organelles or other cell parts
centrioles
DNA
cell
eukoryotic cells
6. Membrane-bound organelle that stores water and soluble substances
carbon dioxide fixation
exocytosis
stigma
vacuole
7. Three-nucleotide sequence on messenger RNA that codes for a single amino acid
endosymbiont hypothesis
cofactor
codon
diploid
8. Smallest unit of most living things
cell
stigma
ATP
perennial
9. Vacuole membrane
diploid
glycolysis
tonoplast
transduction
10. In photosynthesis - this is the splitting of water by light
annuals
homologs
facilitated diffusion
photolysis
11. First step in releasing the energy of glucose - in which a molecule of glucose is broken into two molecules of pyruvic acid
glycolysis
filament
chlorophyll
haploid
12. A period during which the cell grows - G1 - copies its DNA - S - and synthesizes proteins - G2
pedicel
telophase
interphase
electron transport
13. A non-protein - but organic - molecule (such as vitamin) that is covalently bound to an enzyme as part of the active site
ATP
exocytosis
cofactor
prosthetic group
14. Plants that grow year after year
organelles
krebs cycle
microtubules
perennial
15. Consists of DNA tightly coiled around proteins
centromere
codon
chromatin
ATP
16. Area where the chromatids of a chromosome are attached
nucleosome
nuclear pores
enzymes
centromere
17. Composed of a bilayer of lipids embedded with globular proteins
cell membrane
prophase
krebs cycle
post-transcriptional processing
18. The organic process whereby the DNA sequence in a gene is copied into mRNA
chlorophyll
stigma
telophase
transcription
19. Passive transport of materials across a plasma membrane by transport proteins embedded in the plasma membrane
facilitated diffusion
perennial
virus
endocytic vesicles
20. Body of a chloroplast containing grana
stroma
mitochondria
anther
krebs cycle
21. Living thing
catabolism
organism
stamen
mitosis
22. Anaerobic cellular respiration in which pyruvic acid is broken down into end products such as lactic acid
endoplasmic reticulum
gametes
centrioles
fermentation
23. The part of the stamen that contains pollen
anther
golgi apparatus
tonoplast
endosymbiont hypothesis
24. Packaged protein or other substance produced by golgi apparatus/endoplasmic reticulum
interphase
secretory vesicles
microtubules
biosynthesis
25. Theory which suggests mitochondria and chloroplasts were once prokaryotic organisms in a symbiotic relationship with eykorytic cells
diploid
lysosomes
endosymbiont hypothesis
gymnosperms
26. A cell having only one complete set of chromosomes
cell cycle
haploid
homologs
microvilli
27. Matching Chromosomes that are similar but not identical
cell membrane
homologs
grana
angiosperms
28. The process of transfering genetic material from one cell to another
fermentation
electron microscope
nucleosome
transduction
29. The complete genetic material contained in an individual
krebs cycle
microvilli
carbon dioxide fixation
genome
30. The process whereby genetic information coded in messenger RNA directs the formation of a specific protein at a ribosome in the cytoplasm through tRNA
catabolism
translation
cell membrane
genome
31. Structure within ovary of plant that contains egg cells
active site
virus
ovules
metaphase
32. The regular sequence of growth and division that cells undergo
mitosis
endoplasmic reticulum
golgi apparatus
cell cycle
33. Modifications of pre-mRNA that make it into mature mRNA - so that it is ready for protein synthesis
DNA
post-transcriptional processing
reduction
grana
34. Sticky portion at the top of the style which traps pollen
golgi apparatus
electron transport
telophase
stigma
35. The second phase of mitosis - during which the chromosomes line up across the center of the cell
metaphase
ATP
mutation
transcription
36. Set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes
metabolism
electron microscope
pistil
tonoplast
37. The first stage of mitosis - forming spindle fibres attached to the centromere
mutation
fermentation
homologs
prophase
38. Classification of plant which forms seeds inside a protective chamber called an ovary - inside a flower
tonoplast
angiosperms
golgi apparatus
anaphase
39. Classication of plant which produce seeds which are 'naked' (in cones)
mutation
gymnosperms
stamen
ATP
40. (adenosine triphosphate) main energy source that cells use for most of their work
ATP
metabolism
endoplasmic reticulum
meiosis
41. Small structures in the cytoplasm of a cell that do special jobs
centrioles
chlorophyll
gametes
organelles
42. Tubes - One of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope; play a role in cell division.
gametes
translation
organelles
centrioles
43. Green pigment contained in the grana
photolysis
ATP
chlorophyll
catabolism
44. Two identical chromosomes that split and contain the same genetic material
post-transcriptional processing
metabolism
cell cycle
chromatids
45. Small - dense region within most nuclei in which the assembly of RNA proteins begins
nucleolus
golgi apparatus
krebs cycle
cell wall
46. Cell division which produces two identical cells
transformation
vascular plants
facilitated diffusion
mitosis
47. A cell having two sets of chromosomes or twice the haploid number
vacuole
facilitated diffusion
diploid
stamen
48. Modification of a cell by the incorporation of exogenous DNA
transformation
fermentation
eukoryotic cells
mitochondria
49. Process of building up complex materials (proteins) from simple materials
glycolysis
substrate
anabolism
active transport
50. Proteins that act as biological catalysts
chromatids
perennial
enzymes
transcription