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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. Set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes
metabolism
enzymes
lysosomes
DNA
2. The regular sequence of growth and division that cells undergo
nuclear pores
tonoplast
transduction
cell cycle
3. The part of the stamen that contains pollen
interphase
active transport
anther
catabolism
4. Membrane-bound organelle that stores water and soluble substances
translation
chromatids
vacuole
mitosis
5. First step in releasing the energy of glucose - in which a molecule of glucose is broken into two molecules of pyruvic acid
mutation
glycolysis
filament
photolysis
6. Classification of plant which forms seeds inside a protective chamber called an ovary - inside a flower
endocytic vesicles
angiosperms
mitosis
transformation
7. Division of the cytoplasm during cell division - new cell is formed
filament
krebs cycle
carbon dioxide fixation
cytokinesis
8. Formed when cell membrane surrounds a molecule outside the cell and ingests it
chlorophyll
endocytic vesicles
active transport
cell wall
9. Modification of a cell by the incorporation of exogenous DNA
stigma
endosymbiont hypothesis
cytokinesis
transformation
10. The process of transfering genetic material from one cell to another
nucleosome
nuclear pores
transduction
anabolism
11. Sequence of DNA that codes for a protein and thus determines a trait
ovules
metaphase
biosynthesis
gene
12. The stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle
shoot apex
nuclear pores
anaphase
microtubules
13. The stalk of a stamen that supports the anther
ATP
electron microscope
filament
reduction
14. A long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix
metaphase
DNA
prosthetic group
vascular plants
15. Theory which suggests mitochondria and chloroplasts were once prokaryotic organisms in a symbiotic relationship with eykorytic cells
chlorophyll
endosymbiont hypothesis
inhibitor
enzymes
16. Transport of a substance across a cell membrane against the concentration gradient
nuclear pores
microfilaments
active transport
anabolism
17. Stores - packages and ships proteins
metaphase
substrate
diploid
golgi apparatus
18. Stage of cellular respiration that finishes the breakdown of pyruvic acid molecules to carbon dioxide - releasing energy
biosynthesis
nucleolus
krebs cycle
substrate
19. Classification of plant which survives only a single season
ovules
annuals
electron microscope
substrate
20. Breakdown of more complex substances into simpler ones with release of energy
catabolism
vascular plants
transformation
stamen
21. A substance that retards or stops enzymatic activity
gene
inhibitor
active site
centromere
22. The interchange of sections between pairing homologous chromosomes during the prophase of meiosis
crossing over
pistil
transformation
microvilli
23. Hollow tubes of protein about 25 nanometers in diameter - support the cell and moves organelles within the cell
eukoryotic cells
microtubules
stigma
nucleolus
24. Sticky portion at the top of the style which traps pollen
active site
microfilaments
stigma
gymnosperms
25. Particle made up of DNA - RNA - protein - and in some cases lipids that can only replicate only by infecting living cells
prokaryotes
organism
virus
post-transcriptional processing
26. The organic process whereby the DNA sequence in a gene is copied into mRNA
vascular plants
transcription
chromatin
tonoplast
27. Modifications of pre-mRNA that make it into mature mRNA - so that it is ready for protein synthesis
cell cycle
biosynthesis
post-transcriptional processing
nuclear pores
28. A cell having only one complete set of chromosomes
microtubules
ATP
perennial
haploid
29. The part of an enzyme where the chemical reaction occurs
electron microscope
microfilaments
anther
active site
30. Photosynthetic reaction in which carbon dioxide is attached to an organic compound (glucose - polysaccharides)
substrate
biennial
carbon dioxide fixation
prosthetic group
31. Part of stem where growth occurs - contains meristem tissue that is capable of quick growth
shoot apex
chromatids
microfilaments
pistil
32. Site of protein synthesis. Free ribosomes - float unattached; attached ribosomes - attached to the ER
ribosomes
electron transport
prosthetic group
carbon dioxide fixation
33. The male reproductive organ of a flower consisting of anther - filament - and pollen
endosymbiont hypothesis
codon
stamen
active site
34. Packaged protein or other substance produced by golgi apparatus/endoplasmic reticulum
secretory vesicles
exocytosis
ribosomes
microfilaments
35. Bead-like structure in chromatin - composed of a short length of DNA wrapped around a core of histone proteins
nucleosome
biosynthesis
cytoskeleton
mutation
36. Green pigment contained in the grana
shoot apex
facilitated diffusion
cytokinesis
chlorophyll
37. Proteins that act as biological catalysts
cytoskeleton
vascular plants
enzymes
endosymbiont hypothesis
38. Production of a chemical compound by a living organism
endosymbiont hypothesis
perennial
microtubules
biosynthesis
39. The process whereby genetic information coded in messenger RNA directs the formation of a specific protein at a ribosome in the cytoplasm through tRNA
gene
translation
golgi apparatus
nucleosome
40. Projections on cell membrane increase surface area
microvilli
genome
facilitated diffusion
biosynthesis
41. Process by which a cell releases large amounts of material
microvilli
exocytosis
angiosperms
secretory vesicles
42. Living thing
grana
metaphase
eukoryotic cells
organism
43. Matching Chromosomes that are similar but not identical
ribosomes
exocytosis
carbon dioxide fixation
homologs
44. 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
cell cycle
endoplasmic reticulum
biennial
cristae
45. Body of a chloroplast containing grana
organism
stroma
cell membrane
gametes
46. Classication of plant which produce seeds which are 'naked' (in cones)
tonoplast
biennial
gymnosperms
pedicel
47. Two identical chromosomes that split and contain the same genetic material
chromatids
ovary
vacuole
translation
48. Classification of plant whose life cycle survives two seasons
biennial
stamen
perennial
alleles
49. The first stage of mitosis - forming spindle fibres attached to the centromere
stamen
krebs cycle
facilitated diffusion
prophase
50. Small structures in the cytoplasm of a cell that do special jobs
mitosis
chlorophyll
DNA
organelles