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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. Disk-like plates which are the site of photosynthesis in chloroplasts
grana
mitosis
catabolism
diploid
2. A long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix
microtubules
metaphase
anabolism
DNA
3. The stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle
anaphase
glycolysis
endocytic vesicles
anabolism
4. Area where the chromatids of a chromosome are attached
centromere
cell wall
biosynthesis
transduction
5. Used to examine tiny cell organelles
tonoplast
electron microscope
biennial
cell cycle
6. A period during which the cell grows - G1 - copies its DNA - S - and synthesizes proteins - G2
cell cycle
vascular plants
interphase
stamen
7. Production of a chemical compound by a living organism
mutation
chromatin
krebs cycle
biosynthesis
8. Three-nucleotide sequence on messenger RNA that codes for a single amino acid
lysosomes
centromere
grana
codon
9. A non-protein - but organic - molecule (such as vitamin) that is covalently bound to an enzyme as part of the active site
prosthetic group
interphase
cell cycle
metabolism
10. Two identical chromosomes that split and contain the same genetic material
chromatids
mitosis
cytokinesis
glycolysis
11. Small - dense region within most nuclei in which the assembly of RNA proteins begins
nucleolus
biosynthesis
cell membrane
vacuole
12. Bead-like structure in chromatin - composed of a short length of DNA wrapped around a core of histone proteins
golgi apparatus
genome
nucleosome
chlorophyll
13. Composed of a bilayer of lipids embedded with globular proteins
transformation
perennial
active site
cell membrane
14. Process of building up complex materials (proteins) from simple materials
anabolism
cytoskeleton
stigma
prokaryotes
15. Site of protein synthesis. Free ribosomes - float unattached; attached ribosomes - attached to the ER
endosymbiont hypothesis
gametes
ribosomes
virus
16. The substance acted upon by an enzyme
nuclear pores
ribosomes
substrate
biosynthesis
17. Small structures in the cytoplasm of a cell that do special jobs
organelles
microvilli
microfilaments
nucleolus
18. Process by which a cell releases large amounts of material
centrioles
cell wall
cell
exocytosis
19. The male reproductive organ of a flower consisting of anther - filament - and pollen
filament
pistil
catabolism
stamen
20. Smallest unit of most living things
cell
interphase
metaphase
facilitated diffusion
21. Passive transport of materials across a plasma membrane by transport proteins embedded in the plasma membrane
cell
facilitated diffusion
meiosis
vacuole
22. 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)
reduction
glycolysis
centrioles
electron transport
23. Classification of plant whose life cycle survives two seasons
pistil
biennial
cofactor
gametes
24. A substance that must join with the enzyme to enable it to fit the substrate
anther
cofactor
endosymbiont hypothesis
golgi apparatus
25. The complete genetic material contained in an individual
telophase
genome
DNA
mutation
26. The first stage of mitosis - forming spindle fibres attached to the centromere
perennial
diploid
prophase
gene
27. Photosynthetic reaction in which carbon dioxide is attached to an organic compound (glucose - polysaccharides)
endocytic vesicles
microvilli
interphase
carbon dioxide fixation
28. Tubes - One of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope; play a role in cell division.
nuclear pores
biennial
centrioles
mitosis
29. Classification of plant which forms seeds inside a protective chamber called an ovary - inside a flower
angiosperms
metabolism
transformation
telophase
30. The part of an enzyme where the chemical reaction occurs
vacuole
mitochondria
active site
chromatids
31. Pores which allows materials to move in and out of the cell nucleus
pedicel
chromatin
nuclear pores
perennial
32. Hollow tubes of protein about 25 nanometers in diameter - support the cell and moves organelles within the cell
anabolism
post-transcriptional processing
pedicel
microtubules
33. Reducing the ploidy level of nucleus from diploid to haploid in meiotic cell division
substrate
stroma
reduction
biennial
34. Packaged protein or other substance produced by golgi apparatus/endoplasmic reticulum
electron microscope
mitosis
secretory vesicles
prosthetic group
35. Strong layer around the cell membrane in plants - algae - and some bacteria made of cellulose and lignin
cell wall
pedicel
ovules
lysosomes
36. Particle made up of DNA - RNA - protein - and in some cases lipids that can only replicate only by infecting living cells
stigma
cofactor
virus
transformation
37. A cell having two sets of chromosomes or twice the haploid number
diploid
cell membrane
translation
annuals
38. Theory which suggests mitochondria and chloroplasts were once prokaryotic organisms in a symbiotic relationship with eykorytic cells
homologs
ribosomes
endosymbiont hypothesis
mitosis
39. Formed when cell membrane surrounds a molecule outside the cell and ingests it
organelles
endocytic vesicles
active transport
gymnosperms
40. Classification of plant which survives only a single season
annuals
endosymbiont hypothesis
endoplasmic reticulum
angiosperms
41. Part of stem where growth occurs - contains meristem tissue that is capable of quick growth
biosynthesis
shoot apex
mitosis
cristae
42. The process of transfering genetic material from one cell to another
diploid
fermentation
transduction
microfilaments
43. Green pigment contained in the grana
alleles
golgi apparatus
chlorophyll
stigma
44. Proteins that act as biological catalysts
enzymes
prophase
mutation
haploid
45. Double-stranded chains of proteins which give structure to the cell
translation
biennial
microfilaments
photolysis
46. Cell division which produces two identical cells
stigma
endosymbiont hypothesis
mitosis
secretory vesicles
47. Consists of DNA tightly coiled around proteins
stroma
ribosomes
DNA
chromatin
48. Living thing
microfilaments
carbon dioxide fixation
active site
organism
49. First step in releasing the energy of glucose - in which a molecule of glucose is broken into two molecules of pyruvic acid
enzymes
glycolysis
telophase
anther
50. The part of the stamen that contains pollen
meiosis
anther
golgi apparatus
transformation