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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. Body of a chloroplast containing grana
fermentation
organelles
anther
stroma
2. Green pigment contained in the grana
fermentation
pistil
chlorophyll
secretory vesicles
3. Small structures in the cytoplasm of a cell that do special jobs
organelles
inhibitor
post-transcriptional processing
anther
4. Process of building up complex materials (proteins) from simple materials
cytokinesis
anabolism
reduction
metabolism
5. First step in releasing the energy of glucose - in which a molecule of glucose is broken into two molecules of pyruvic acid
glycolysis
haploid
chromatids
cell wall
6. The male reproductive organ of a flower consisting of anther - filament - and pollen
haploid
shoot apex
stamen
post-transcriptional processing
7. Packaged protein or other substance produced by golgi apparatus/endoplasmic reticulum
secretory vesicles
meiosis
annuals
endoplasmic reticulum
8. A cell having two sets of chromosomes or twice the haploid number
organelles
endosymbiont hypothesis
diploid
annuals
9. Particle made up of DNA - RNA - protein - and in some cases lipids that can only replicate only by infecting living cells
gene
inhibitor
eukoryotic cells
virus
10. A non-protein - but organic - molecule (such as vitamin) that is covalently bound to an enzyme as part of the active site
cofactor
cell
prosthetic group
nuclear pores
11. Area where the chromatids of a chromosome are attached
ovules
secretory vesicles
cristae
centromere
12. Two identical chromosomes that split and contain the same genetic material
chromatids
inhibitor
cristae
genome
13. Division of the cytoplasm during cell division - new cell is formed
golgi apparatus
cytokinesis
microtubules
pedicel
14. The first stage of mitosis - forming spindle fibres attached to the centromere
prophase
eukoryotic cells
vascular plants
metaphase
15. The final stage of mitosis or meiosis - during which a nuclear membrane forms around each set of new chromosomes
telophase
anaphase
codon
virus
16. Reproductive cells - have only half the number of chromosomes
gametes
homologs
substrate
electron microscope
17. Bead-like structure in chromatin - composed of a short length of DNA wrapped around a core of histone proteins
cell cycle
nucleosome
prophase
krebs cycle
18. In photosynthesis - this is the splitting of water by light
cell
microfilaments
photolysis
ATP
19. Have tissues made of cells that transport water and nutrients throughout the plant
fermentation
vascular plants
post-transcriptional processing
pedicel
20. Used to examine tiny cell organelles
gene
golgi apparatus
electron microscope
nuclear pores
21. Disk-like plates which are the site of photosynthesis in chloroplasts
anabolism
photolysis
cell membrane
grana
22. Matching Chromosomes that are similar but not identical
carbon dioxide fixation
mitochondria
mutation
homologs
23. 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)
electron transport
translation
cell wall
tonoplast
24. Set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes
metabolism
cofactor
virus
endoplasmic reticulum
25. The stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle
nuclear pores
endosymbiont hypothesis
eukoryotic cells
anaphase
26. Cell division that produces reproductive cells in sexually reproducing organisms
gymnosperms
fermentation
meiosis
microtubules
27. Small - dense region within most nuclei in which the assembly of RNA proteins begins
cell
nucleolus
biosynthesis
metaphase
28. Living thing
meiosis
cell wall
organism
mitochondria
29. Smallest unit of most living things
angiosperms
anabolism
anther
cell
30. (adenosine triphosphate) main energy source that cells use for most of their work
anaphase
prokaryotes
ATP
enzymes
31. The part of an enzyme where the chemical reaction occurs
anther
chlorophyll
active site
shoot apex
32. The second phase of mitosis - during which the chromosomes line up across the center of the cell
transformation
metaphase
ribosomes
exocytosis
33. Stores - packages and ships proteins
reduction
golgi apparatus
chromatids
electron microscope
34. The substance acted upon by an enzyme
homologs
codon
golgi apparatus
substrate
35. Process by which a cell releases large amounts of material
reduction
chromatin
cristae
exocytosis
36. Vacuole membrane
gene
pedicel
krebs cycle
tonoplast
37. The process of transfering genetic material from one cell to another
interphase
inhibitor
transduction
biennial
38. Transport of a substance across a cell membrane against the concentration gradient
transduction
microvilli
chromatids
active transport
39. Double-stranded chains of proteins which give structure to the cell
post-transcriptional processing
microfilaments
substrate
eukoryotic cells
40. Sequence of DNA that codes for a protein and thus determines a trait
crossing over
endocytic vesicles
gene
annuals
41. Three-nucleotide sequence on messenger RNA that codes for a single amino acid
telophase
chromatids
codon
glycolysis
42. Has a nucleus - has organelles or other cell parts
virus
eukoryotic cells
enzymes
nuclear pores
43. Stage of cellular respiration that finishes the breakdown of pyruvic acid molecules to carbon dioxide - releasing energy
gymnosperms
electron transport
krebs cycle
carbon dioxide fixation
44. A long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix
DNA
eukoryotic cells
gymnosperms
cytokinesis
45. Breakdown of more complex substances into simpler ones with release of energy
catabolism
facilitated diffusion
anabolism
gene
46. Stalk that supports the flower
metabolism
pedicel
chromatin
mitosis
47. Numerous folds in the inner membrane of a mitochondrion - the site of cellular respiration
virus
tonoplast
cristae
interphase
48. The regular sequence of growth and division that cells undergo
cell cycle
centromere
haploid
ovules
49. The organic process whereby the DNA sequence in a gene is copied into mRNA
krebs cycle
transcription
homologs
centromere
50. Classification of plant whose life cycle survives two seasons
diploid
telophase
active transport
biennial