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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. Classification of plant which survives only a single season
annuals
cell cycle
ovary
nucleolus
2. Photosynthetic reaction in which carbon dioxide is attached to an organic compound (glucose - polysaccharides)
pedicel
annuals
carbon dioxide fixation
ovary
3. Sequence of DNA that codes for a protein and thus determines a trait
codon
gene
grana
microtubules
4. The regular sequence of growth and division that cells undergo
chromatids
cell cycle
ovules
glycolysis
5. The female part of a flower composed of ovary and style and stigma and ovules
anther
cell wall
pistil
golgi apparatus
6. Formed when cell membrane surrounds a molecule outside the cell and ingests it
ovary
mitosis
endocytic vesicles
exocytosis
7. The part of the stamen that contains pollen
endocytic vesicles
virus
microtubules
anther
8. The organic process whereby the DNA sequence in a gene is copied into mRNA
telophase
endosymbiont hypothesis
transcription
perennial
9. 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)
fermentation
reduction
electron transport
gametes
10. A long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix
annuals
carbon dioxide fixation
haploid
DNA
11. Bead-like structure in chromatin - composed of a short length of DNA wrapped around a core of histone proteins
anther
ribosomes
fermentation
nucleosome
12. The process of transfering genetic material from one cell to another
transduction
inhibitor
pistil
ribosomes
13. Two identical chromosomes that split and contain the same genetic material
genome
chromatids
crossing over
prokaryotes
14. The second phase of mitosis - during which the chromosomes line up across the center of the cell
enzymes
mitochondria
cell
metaphase
15. Passive transport of materials across a plasma membrane by transport proteins embedded in the plasma membrane
diploid
facilitated diffusion
biosynthesis
metaphase
16. A substance that must join with the enzyme to enable it to fit the substrate
tonoplast
interphase
stigma
cofactor
17. Different forms of a gene
alleles
active site
exocytosis
biennial
18. Classification of plant which forms seeds inside a protective chamber called an ovary - inside a flower
angiosperms
cell
diploid
photolysis
19. Site of protein synthesis. Free ribosomes - float unattached; attached ribosomes - attached to the ER
cristae
endocytic vesicles
carbon dioxide fixation
ribosomes
20. The final stage of mitosis or meiosis - during which a nuclear membrane forms around each set of new chromosomes
catabolism
telophase
transcription
gymnosperms
21. The interchange of sections between pairing homologous chromosomes during the prophase of meiosis
crossing over
DNA
mitochondria
substrate
22. Powerhouse of the cell - organelle that is the site of ATP (energy) production
angiosperms
stamen
chlorophyll
mitochondria
23. Consists of DNA tightly coiled around proteins
chromatin
tonoplast
vascular plants
secretory vesicles
24. Stalk that supports the flower
pedicel
anaphase
filament
centrioles
25. Green pigment contained in the grana
chlorophyll
catabolism
microtubules
exocytosis
26. Division of the cytoplasm during cell division - new cell is formed
telophase
stroma
chlorophyll
cytokinesis
27. Structure within ovary of plant that contains egg cells
vacuole
alleles
ovules
glycolysis
28. Living thing
nucleosome
metabolism
organism
carbon dioxide fixation
29. Numerous folds in the inner membrane of a mitochondrion - the site of cellular respiration
cristae
stigma
mutation
post-transcriptional processing
30. Classication of plant which produce seeds which are 'naked' (in cones)
interphase
gymnosperms
organism
alleles
31. The stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle
anaphase
DNA
interphase
secretory vesicles
32. A substance that retards or stops enzymatic activity
genome
anther
anabolism
inhibitor
33. Packaged protein or other substance produced by golgi apparatus/endoplasmic reticulum
facilitated diffusion
secretory vesicles
cofactor
mutation
34. Stores - packages and ships proteins
cell
mutation
golgi apparatus
post-transcriptional processing
35. The organ that bears the ovules of a flower - base of the pistil
exocytosis
cristae
ovary
electron transport
36. The process whereby genetic information coded in messenger RNA directs the formation of a specific protein at a ribosome in the cytoplasm through tRNA
mitochondria
translation
microvilli
transformation
37. A non-protein - but organic - molecule (such as vitamin) that is covalently bound to an enzyme as part of the active site
endosymbiont hypothesis
gene
reduction
prosthetic group
38. Strong layer around the cell membrane in plants - algae - and some bacteria made of cellulose and lignin
cell wall
biennial
photolysis
inhibitor
39. Membrane-bound organelle that stores water and soluble substances
vacuole
lysosomes
organism
biosynthesis
40. Process of building up complex materials (proteins) from simple materials
perennial
anabolism
nucleolus
biennial
41. A cell having only one complete set of chromosomes
active transport
biosynthesis
reduction
haploid
42. Small structures in the cytoplasm of a cell that do special jobs
chromatin
organelles
centrioles
endoplasmic reticulum
43. Hollow tubes of protein about 25 nanometers in diameter - support the cell and moves organelles within the cell
microtubules
genome
anaphase
anabolism
44. Small - dense region within most nuclei in which the assembly of RNA proteins begins
nucleolus
ovules
endosymbiont hypothesis
cell wall
45. Modification of a cell by the incorporation of exogenous DNA
ATP
tonoplast
facilitated diffusion
transformation
46. Tubes - One of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope; play a role in cell division.
codon
centrioles
gymnosperms
grana
47. Sticky portion at the top of the style which traps pollen
annuals
haploid
stroma
stigma
48. Disk-like plates which are the site of photosynthesis in chloroplasts
grana
shoot apex
virus
crossing over
49. The complete genetic material contained in an individual
genome
ovules
organism
electron microscope
50. The part of an enzyme where the chemical reaction occurs
translation
haploid
active site
biosynthesis