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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. Process of building up complex materials (proteins) from simple materials
microfilaments
inhibitor
secretory vesicles
anabolism
2. Photosynthetic reaction in which carbon dioxide is attached to an organic compound (glucose - polysaccharides)
carbon dioxide fixation
metaphase
lysosomes
endocytic vesicles
3. An internal membrane system in which components of cell membrane and some proteins are constructed. rough - instrumental in protein synthesis; smooth - processes lipids fats and steroids
anther
chlorophyll
crossing over
endoplasmic reticulum
4. First step in releasing the energy of glucose - in which a molecule of glucose is broken into two molecules of pyruvic acid
prokaryotes
gene
glycolysis
haploid
5. Tubes - One of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope; play a role in cell division.
centrioles
cell membrane
nucleosome
angiosperms
6. A substance that must join with the enzyme to enable it to fit the substrate
cofactor
shoot apex
photolysis
grana
7. Consists of DNA tightly coiled around proteins
carbon dioxide fixation
chromatin
tonoplast
reduction
8. The stalk of a stamen that supports the anther
interphase
diploid
gymnosperms
filament
9. The male reproductive organ of a flower consisting of anther - filament - and pollen
anabolism
anther
centromere
stamen
10. Small structures in the cytoplasm of a cell that do special jobs
filament
ovules
organelles
centrioles
11. Anaerobic cellular respiration in which pyruvic acid is broken down into end products such as lactic acid
fermentation
nucleosome
translation
reduction
12. A non-protein - but organic - molecule (such as vitamin) that is covalently bound to an enzyme as part of the active site
prosthetic group
cristae
mitosis
eukoryotic cells
13. Passive transport of materials across a plasma membrane by transport proteins embedded in the plasma membrane
centrioles
pistil
facilitated diffusion
cell wall
14. Stage of cellular respiration that finishes the breakdown of pyruvic acid molecules to carbon dioxide - releasing energy
cell wall
tonoplast
krebs cycle
mutation
15. Composed of a bilayer of lipids embedded with globular proteins
codon
biosynthesis
cell membrane
tonoplast
16. Cells that lack a membrane-bound nucleus and membrane-bound organelles
prokaryotes
alleles
DNA
meiosis
17. The final stage of mitosis or meiosis - during which a nuclear membrane forms around each set of new chromosomes
endosymbiont hypothesis
telophase
tonoplast
cytoskeleton
18. Structure within ovary of plant that contains egg cells
ovules
grana
fermentation
centromere
19. Proteins that act as biological catalysts
translation
enzymes
biosynthesis
chromatids
20. Packaged protein or other substance produced by golgi apparatus/endoplasmic reticulum
inhibitor
microvilli
facilitated diffusion
secretory vesicles
21. Set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes
meiosis
metabolism
genome
virus
22. A period during which the cell grows - G1 - copies its DNA - S - and synthesizes proteins - G2
endocytic vesicles
microvilli
interphase
pedicel
23. Classification of plant which forms seeds inside a protective chamber called an ovary - inside a flower
photolysis
angiosperms
prokaryotes
gametes
24. Living thing
nucleolus
secretory vesicles
shoot apex
organism
25. The process whereby genetic information coded in messenger RNA directs the formation of a specific protein at a ribosome in the cytoplasm through tRNA
stamen
cell wall
translation
fermentation
26. A long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix
eukoryotic cells
DNA
nucleolus
stamen
27. Process by which a cell releases large amounts of material
krebs cycle
filament
stroma
exocytosis
28. Classification of plant whose life cycle survives two seasons
stigma
biennial
post-transcriptional processing
metabolism
29. Transport of a substance across a cell membrane against the concentration gradient
active transport
anther
electron transport
ovary
30. Hollow tubes of protein about 25 nanometers in diameter - support the cell and moves organelles within the cell
microtubules
ovary
post-transcriptional processing
carbon dioxide fixation
31. Smallest unit of most living things
cofactor
homologs
diploid
cell
32. Production of a chemical compound by a living organism
glycolysis
genome
secretory vesicles
biosynthesis
33. Membrane-bound organelle that stores water and soluble substances
vacuole
anther
annuals
vascular plants
34. A substance that retards or stops enzymatic activity
endocytic vesicles
inhibitor
reduction
mitochondria
35. Cell division that produces reproductive cells in sexually reproducing organisms
prophase
ribosomes
photolysis
meiosis
36. Reducing the ploidy level of nucleus from diploid to haploid in meiotic cell division
reduction
mutation
metaphase
telophase
37. The regular sequence of growth and division that cells undergo
shoot apex
cell cycle
ovary
anaphase
38. Disk-like plates which are the site of photosynthesis in chloroplasts
grana
cell cycle
codon
cofactor
39. Vacuole membrane
krebs cycle
active transport
tonoplast
microvilli
40. Site of protein synthesis. Free ribosomes - float unattached; attached ribosomes - attached to the ER
stigma
fermentation
ribosomes
angiosperms
41. Have tissues made of cells that transport water and nutrients throughout the plant
vascular plants
meiosis
organism
cofactor
42. Formed when cell membrane surrounds a molecule outside the cell and ingests it
microfilaments
stroma
cell wall
endocytic vesicles
43. Stalk that supports the flower
chromatin
interphase
catabolism
pedicel
44. (adenosine triphosphate) main energy source that cells use for most of their work
centrioles
codon
pistil
ATP
45. The process of transfering genetic material from one cell to another
transduction
prokaryotes
homologs
secretory vesicles
46. The interchange of sections between pairing homologous chromosomes during the prophase of meiosis
diploid
endoplasmic reticulum
metaphase
crossing over
47. 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
stamen
gene
prosthetic group
48. Area where the chromatids of a chromosome are attached
electron microscope
centromere
cofactor
shoot apex
49. Breakdown of more complex substances into simpler ones with release of energy
catabolism
interphase
biosynthesis
ovules
50. Strong layer around the cell membrane in plants - algae - and some bacteria made of cellulose and lignin
post-transcriptional processing
cell wall
meiosis
biennial