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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. Powerhouse of the cell - organelle that is the site of ATP (energy) production
metaphase
stamen
mitochondria
electron transport
2. Sticky portion at the top of the style which traps pollen
inhibitor
stigma
electron microscope
cytoskeleton
3. Cell division which produces two identical cells
cytokinesis
active site
chlorophyll
mitosis
4. Small - dense region within most nuclei in which the assembly of RNA proteins begins
perennial
metabolism
metaphase
nucleolus
5. Area where the chromatids of a chromosome are attached
centromere
exocytosis
prophase
cytoskeleton
6. Sequence of DNA that codes for a protein and thus determines a trait
biosynthesis
gene
ATP
codon
7. Passive transport of materials across a plasma membrane by transport proteins embedded in the plasma membrane
inhibitor
facilitated diffusion
anabolism
chromatin
8. The final stage of mitosis or meiosis - during which a nuclear membrane forms around each set of new chromosomes
telophase
enzymes
haploid
nuclear pores
9. Cell division that produces reproductive cells in sexually reproducing organisms
gymnosperms
electron microscope
meiosis
glycolysis
10. The second phase of mitosis - during which the chromosomes line up across the center of the cell
mitosis
metaphase
grana
alleles
11. A cell having only one complete set of chromosomes
gymnosperms
lysosomes
krebs cycle
haploid
12. Projections on cell membrane increase surface area
filament
microvilli
inhibitor
perennial
13. A substance that retards or stops enzymatic activity
secretory vesicles
inhibitor
chromatin
cell membrane
14. Cell organelle filled with enyzmes need to break down certain materials in the cells
cristae
transduction
lysosomes
krebs cycle
15. Reproductive cells - have only half the number of chromosomes
gametes
metabolism
gymnosperms
inhibitor
16. Classification of plant which survives only a single season
annuals
prosthetic group
ATP
catabolism
17. Provides structural support to a cell composed of microtubules - microfilaments - centrioles
reduction
golgi apparatus
cytoskeleton
vascular plants
18. The regular sequence of growth and division that cells undergo
cell
catabolism
post-transcriptional processing
cell cycle
19. Two identical chromosomes that split and contain the same genetic material
chromatin
cell
annuals
chromatids
20. Site of protein synthesis. Free ribosomes - float unattached; attached ribosomes - attached to the ER
cell cycle
chlorophyll
mitosis
ribosomes
21. Part of stem where growth occurs - contains meristem tissue that is capable of quick growth
endoplasmic reticulum
reduction
shoot apex
cytokinesis
22. Process by which a cell releases large amounts of material
ovules
active transport
exocytosis
catabolism
23. Plants that grow year after year
perennial
ribosomes
mitosis
meiosis
24. Vacuole membrane
alleles
enzymes
haploid
tonoplast
25. A long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix
active transport
angiosperms
DNA
pedicel
26. Modifications of pre-mRNA that make it into mature mRNA - so that it is ready for protein synthesis
translation
prosthetic group
post-transcriptional processing
anther
27. A cell having two sets of chromosomes or twice the haploid number
catabolism
photolysis
diploid
tonoplast
28. The organ that bears the ovules of a flower - base of the pistil
ovary
golgi apparatus
stamen
interphase
29. Pores which allows materials to move in and out of the cell nucleus
telophase
transcription
nuclear pores
electron transport
30. Set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes
metabolism
shoot apex
inhibitor
chromatids
31. The process whereby genetic information coded in messenger RNA directs the formation of a specific protein at a ribosome in the cytoplasm through tRNA
organism
translation
centromere
cell
32. Membrane-bound organelle that stores water and soluble substances
endoplasmic reticulum
genome
vacuole
cristae
33. Hollow tubes of protein about 25 nanometers in diameter - support the cell and moves organelles within the cell
ATP
microtubules
alleles
post-transcriptional processing
34. The part of the stamen that contains pollen
krebs cycle
lysosomes
anther
ATP
35. Production of a chemical compound by a living organism
haploid
ribosomes
biosynthesis
stroma
36. Different forms of a gene
diploid
centromere
nuclear pores
alleles
37. Anaerobic cellular respiration in which pyruvic acid is broken down into end products such as lactic acid
fermentation
inhibitor
interphase
electron transport
38. Division of the cytoplasm during cell division - new cell is formed
centromere
cytokinesis
stroma
cofactor
39. The complete genetic material contained in an individual
shoot apex
inhibitor
genome
ovary
40. A period during which the cell grows - G1 - copies its DNA - S - and synthesizes proteins - G2
diploid
interphase
translation
substrate
41. Living thing
centromere
anaphase
virus
organism
42. Has a nucleus - has organelles or other cell parts
eukoryotic cells
pistil
gene
crossing over
43. Classification of plant which forms seeds inside a protective chamber called an ovary - inside a flower
angiosperms
virus
mitosis
cell wall
44. Classification of plant whose life cycle survives two seasons
enzymes
biennial
microvilli
substrate
45. Structure within ovary of plant that contains egg cells
prokaryotes
ovules
transformation
microtubules
46. A non-protein - but organic - molecule (such as vitamin) that is covalently bound to an enzyme as part of the active site
centromere
prosthetic group
eukoryotic cells
prophase
47. Bead-like structure in chromatin - composed of a short length of DNA wrapped around a core of histone proteins
haploid
substrate
facilitated diffusion
nucleosome
48. Strong layer around the cell membrane in plants - algae - and some bacteria made of cellulose and lignin
microfilaments
stamen
endosymbiont hypothesis
cell wall
49. Numerous folds in the inner membrane of a mitochondrion - the site of cellular respiration
biennial
cristae
ovary
ATP
50. Disk-like plates which are the site of photosynthesis in chloroplasts
grana
stroma
microvilli
exocytosis