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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. Membrane-bound organelle that stores water and soluble substances
endosymbiont hypothesis
centromere
prokaryotes
vacuole
2. The final stage of mitosis or meiosis - during which a nuclear membrane forms around each set of new chromosomes
centromere
organelles
homologs
telophase
3. Packaged protein or other substance produced by golgi apparatus/endoplasmic reticulum
chlorophyll
transcription
secretory vesicles
virus
4. Three-nucleotide sequence on messenger RNA that codes for a single amino acid
alleles
cell cycle
homologs
codon
5. Provides structural support to a cell composed of microtubules - microfilaments - centrioles
mutation
cytoskeleton
electron transport
perennial
6. Particle made up of DNA - RNA - protein - and in some cases lipids that can only replicate only by infecting living cells
ATP
chromatids
virus
telophase
7. Process by which a cell releases large amounts of material
exocytosis
prosthetic group
anther
transduction
8. The male reproductive organ of a flower consisting of anther - filament - and pollen
telophase
endosymbiont hypothesis
stamen
prosthetic group
9. Projections on cell membrane increase surface area
haploid
microvilli
ovules
DNA
10. Cells that lack a membrane-bound nucleus and membrane-bound organelles
biosynthesis
prokaryotes
lysosomes
gametes
11. Plants that grow year after year
cell membrane
ovary
perennial
crossing over
12. The process of transfering genetic material from one cell to another
transduction
anaphase
active site
biennial
13. The interchange of sections between pairing homologous chromosomes during the prophase of meiosis
crossing over
cytoskeleton
DNA
nucleolus
14. Powerhouse of the cell - organelle that is the site of ATP (energy) production
chlorophyll
organism
mitochondria
metaphase
15. Division of the cytoplasm during cell division - new cell is formed
endoplasmic reticulum
nucleolus
cytokinesis
filament
16. First step in releasing the energy of glucose - in which a molecule of glucose is broken into two molecules of pyruvic acid
gene
enzymes
glycolysis
cell membrane
17. Production of a chemical compound by a living organism
virus
angiosperms
gymnosperms
biosynthesis
18. Modifications of pre-mRNA that make it into mature mRNA - so that it is ready for protein synthesis
ovary
prosthetic group
post-transcriptional processing
nucleolus
19. Bead-like structure in chromatin - composed of a short length of DNA wrapped around a core of histone proteins
metaphase
alleles
ATP
nucleosome
20. Sticky portion at the top of the style which traps pollen
virus
microfilaments
transcription
stigma
21. The second phase of mitosis - during which the chromosomes line up across the center of the cell
metaphase
angiosperms
microfilaments
alleles
22. The organ that bears the ovules of a flower - base of the pistil
homologs
biosynthesis
ovary
krebs cycle
23. The complete genetic material contained in an individual
genome
anabolism
vascular plants
biosynthesis
24. Transport of a substance across a cell membrane against the concentration gradient
cytokinesis
active transport
eukoryotic cells
homologs
25. Sequence of DNA that codes for a protein and thus determines a trait
vacuole
active transport
gene
annuals
26. Cell organelle filled with enyzmes need to break down certain materials in the cells
lysosomes
pistil
transduction
annuals
27. Composed of a bilayer of lipids embedded with globular proteins
transduction
filament
alleles
cell membrane
28. (adenosine triphosphate) main energy source that cells use for most of their work
ATP
diploid
mitosis
gametes
29. Photosynthetic reaction in which carbon dioxide is attached to an organic compound (glucose - polysaccharides)
shoot apex
cell wall
carbon dioxide fixation
angiosperms
30. A period during which the cell grows - G1 - copies its DNA - S - and synthesizes proteins - G2
interphase
fermentation
reduction
angiosperms
31. Anaerobic cellular respiration in which pyruvic acid is broken down into end products such as lactic acid
biosynthesis
cristae
fermentation
inhibitor
32. Breakdown of more complex substances into simpler ones with release of energy
anabolism
catabolism
ovary
krebs cycle
33. The stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle
anaphase
centromere
genome
electron transport
34. Stores - packages and ships proteins
nuclear pores
golgi apparatus
endocytic vesicles
haploid
35. Proteins that act as biological catalysts
prosthetic group
enzymes
chlorophyll
cell membrane
36. Classification of plant which survives only a single season
annuals
cell membrane
alleles
chlorophyll
37. The stalk of a stamen that supports the anther
filament
substrate
chlorophyll
glycolysis
38. The substance acted upon by an enzyme
endosymbiont hypothesis
endoplasmic reticulum
chlorophyll
substrate
39. Site of protein synthesis. Free ribosomes - float unattached; attached ribosomes - attached to the ER
ribosomes
mitosis
filament
transduction
40. Classification of plant which forms seeds inside a protective chamber called an ovary - inside a flower
anaphase
angiosperms
enzymes
secretory vesicles
41. Different forms of a gene
secretory vesicles
alleles
endocytic vesicles
golgi apparatus
42. Has a nucleus - has organelles or other cell parts
homologs
microfilaments
vacuole
eukoryotic cells
43. Consists of DNA tightly coiled around proteins
stigma
biosynthesis
virus
chromatin
44. Set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes
metabolism
microtubules
vacuole
stroma
45. Smallest unit of most living things
diploid
fermentation
eukoryotic cells
cell
46. A substance that must join with the enzyme to enable it to fit the substrate
reduction
virus
cytokinesis
cofactor
47. Have tissues made of cells that transport water and nutrients throughout the plant
vascular plants
transcription
cytokinesis
carbon dioxide fixation
48. A cell having only one complete set of chromosomes
organism
haploid
glycolysis
codon
49. Vacuole membrane
tonoplast
ovules
cofactor
cell cycle
50. Green pigment contained in the grana
diploid
anaphase
endocytic vesicles
chlorophyll