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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. Particle made up of DNA - RNA - protein - and in some cases lipids that can only replicate only by infecting living cells
microfilaments
virus
anther
gymnosperms
2. Two identical chromosomes that split and contain the same genetic material
nucleosome
organelles
ovules
chromatids
3. A long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix
DNA
fermentation
transduction
nucleosome
4. Strong layer around the cell membrane in plants - algae - and some bacteria made of cellulose and lignin
cell wall
pistil
nucleolus
biennial
5. Smallest unit of most living things
metaphase
metabolism
cell
stamen
6. The female part of a flower composed of ovary and style and stigma and ovules
microtubules
pistil
active site
facilitated diffusion
7. Different forms of a gene
ribosomes
alleles
carbon dioxide fixation
translation
8. Consists of DNA tightly coiled around proteins
biosynthesis
photolysis
cytokinesis
chromatin
9. Classification of plant which forms seeds inside a protective chamber called an ovary - inside a flower
angiosperms
pistil
filament
shoot apex
10. Has a nucleus - has organelles or other cell parts
eukoryotic cells
crossing over
alleles
metaphase
11. The organ that bears the ovules of a flower - base of the pistil
shoot apex
diploid
gymnosperms
ovary
12. Membrane-bound organelle that stores water and soluble substances
nucleolus
vacuole
DNA
anaphase
13. A period during which the cell grows - G1 - copies its DNA - S - and synthesizes proteins - G2
translation
interphase
nuclear pores
genome
14. Double-stranded chains of proteins which give structure to the cell
interphase
microfilaments
active site
microvilli
15. Green pigment contained in the grana
metaphase
gymnosperms
chlorophyll
vacuole
16. Small structures in the cytoplasm of a cell that do special jobs
anther
organelles
haploid
mutation
17. Packaged protein or other substance produced by golgi apparatus/endoplasmic reticulum
nucleosome
active site
secretory vesicles
facilitated diffusion
18. Cell division that produces reproductive cells in sexually reproducing organisms
stigma
eukoryotic cells
meiosis
homologs
19. The stalk of a stamen that supports the anther
prosthetic group
nuclear pores
chlorophyll
filament
20. A substance that must join with the enzyme to enable it to fit the substrate
stroma
vascular plants
microvilli
cofactor
21. Breakdown of more complex substances into simpler ones with release of energy
inhibitor
carbon dioxide fixation
catabolism
organism
22. Hollow tubes of protein about 25 nanometers in diameter - support the cell and moves organelles within the cell
prophase
shoot apex
microtubules
homologs
23. Disk-like plates which are the site of photosynthesis in chloroplasts
fermentation
substrate
anther
grana
24. Cells that lack a membrane-bound nucleus and membrane-bound organelles
mitochondria
prokaryotes
transcription
organism
25. The complete genetic material contained in an individual
lysosomes
active transport
exocytosis
genome
26. The regular sequence of growth and division that cells undergo
microvilli
annuals
stigma
cell cycle
27. Numerous folds in the inner membrane of a mitochondrion - the site of cellular respiration
crossing over
cristae
DNA
gene
28. Have tissues made of cells that transport water and nutrients throughout the plant
vascular plants
cofactor
homologs
electron transport
29. Transport of a substance across a cell membrane against the concentration gradient
lysosomes
nucleosome
stamen
active transport
30. Site of protein synthesis. Free ribosomes - float unattached; attached ribosomes - attached to the ER
ribosomes
gymnosperms
biosynthesis
fermentation
31. The second phase of mitosis - during which the chromosomes line up across the center of the cell
electron transport
metaphase
gymnosperms
annuals
32. Matching Chromosomes that are similar but not identical
diploid
homologs
microvilli
photolysis
33. Part of stem where growth occurs - contains meristem tissue that is capable of quick growth
vascular plants
cytokinesis
shoot apex
alleles
34. Classification of plant whose life cycle survives two seasons
codon
biennial
anaphase
perennial
35. The part of an enzyme where the chemical reaction occurs
nucleosome
active site
grana
endocytic vesicles
36. Bead-like structure in chromatin - composed of a short length of DNA wrapped around a core of histone proteins
biosynthesis
nucleosome
active site
meiosis
37. In photosynthesis - this is the splitting of water by light
annuals
transformation
photolysis
nucleolus
38. Stage of cellular respiration that finishes the breakdown of pyruvic acid molecules to carbon dioxide - releasing energy
golgi apparatus
microfilaments
gene
krebs cycle
39. The male reproductive organ of a flower consisting of anther - filament - and pollen
ATP
anaphase
translation
stamen
40. A cell having only one complete set of chromosomes
stigma
codon
cofactor
haploid
41. Three-nucleotide sequence on messenger RNA that codes for a single amino acid
codon
haploid
transduction
facilitated diffusion
42. Small - dense region within most nuclei in which the assembly of RNA proteins begins
nucleolus
facilitated diffusion
virus
stamen
43. Pores which allows materials to move in and out of the cell nucleus
inhibitor
homologs
nuclear pores
ovary
44. Production of a chemical compound by a living organism
telophase
gene
angiosperms
biosynthesis
45. The first stage of mitosis - forming spindle fibres attached to the centromere
prophase
anther
grana
gymnosperms
46. Set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes
metabolism
microtubules
anaphase
filament
47. The part of the stamen that contains pollen
photolysis
cell membrane
microvilli
anther
48. Powerhouse of the cell - organelle that is the site of ATP (energy) production
mitochondria
tonoplast
biennial
cell
49. First step in releasing the energy of glucose - in which a molecule of glucose is broken into two molecules of pyruvic acid
tonoplast
cell membrane
prosthetic group
glycolysis
50. Modification of a cell by the incorporation of exogenous DNA
chromatids
vascular plants
crossing over
transformation