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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. The second phase of mitosis - during which the chromosomes line up across the center of the cell
microtubules
cristae
virus
metaphase
2. Classication of plant which produce seeds which are 'naked' (in cones)
gymnosperms
prophase
nucleolus
microfilaments
3. Small - dense region within most nuclei in which the assembly of RNA proteins begins
eukoryotic cells
microvilli
nucleolus
stroma
4. Numerous folds in the inner membrane of a mitochondrion - the site of cellular respiration
chromatids
cristae
prophase
cell membrane
5. Projections on cell membrane increase surface area
mitosis
eukoryotic cells
meiosis
microvilli
6. The stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle
active transport
diploid
ATP
anaphase
7. Structure within ovary of plant that contains egg cells
chlorophyll
electron transport
ovules
endocytic vesicles
8. A substance that must join with the enzyme to enable it to fit the substrate
haploid
cytokinesis
cofactor
facilitated diffusion
9. Double-stranded chains of proteins which give structure to the cell
active transport
secretory vesicles
microfilaments
vascular plants
10. Modification of a cell by the incorporation of exogenous DNA
stigma
transformation
active transport
inhibitor
11. Tubes - One of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope; play a role in cell division.
enzymes
shoot apex
anther
centrioles
12. Classification of plant whose life cycle survives two seasons
biennial
homologs
facilitated diffusion
stroma
13. Classification of plant which forms seeds inside a protective chamber called an ovary - inside a flower
angiosperms
reduction
cell membrane
gametes
14. Used to examine tiny cell organelles
electron microscope
biennial
ovules
electron transport
15. Smallest unit of most living things
prosthetic group
chlorophyll
enzymes
cell
16. Area where the chromatids of a chromosome are attached
pistil
centromere
krebs cycle
centrioles
17. Composed of a bilayer of lipids embedded with globular proteins
cell membrane
inhibitor
biennial
ribosomes
18. The process of transfering genetic material from one cell to another
mutation
photolysis
genome
transduction
19. Site of protein synthesis. Free ribosomes - float unattached; attached ribosomes - attached to the ER
vacuole
ribosomes
cell
cytoskeleton
20. Photosynthetic reaction in which carbon dioxide is attached to an organic compound (glucose - polysaccharides)
perennial
virus
carbon dioxide fixation
endocytic vesicles
21. The part of an enzyme where the chemical reaction occurs
vacuole
microvilli
reduction
active site
22. (adenosine triphosphate) main energy source that cells use for most of their work
electron transport
diploid
alleles
ATP
23. The final stage of mitosis or meiosis - during which a nuclear membrane forms around each set of new chromosomes
carbon dioxide fixation
telophase
microvilli
organelles
24. First step in releasing the energy of glucose - in which a molecule of glucose is broken into two molecules of pyruvic acid
glycolysis
lysosomes
gymnosperms
mitosis
25. Theory which suggests mitochondria and chloroplasts were once prokaryotic organisms in a symbiotic relationship with eykorytic cells
lysosomes
endosymbiont hypothesis
stamen
chromatids
26. Green pigment contained in the grana
cytoskeleton
annuals
chlorophyll
inhibitor
27. Cell division which produces two identical cells
cell cycle
mitosis
annuals
angiosperms
28. The complete genetic material contained in an individual
nuclear pores
genome
ovules
haploid
29. The organic process whereby the DNA sequence in a gene is copied into mRNA
transcription
endoplasmic reticulum
endosymbiont hypothesis
tonoplast
30. Sequence of DNA that codes for a protein and thus determines a trait
centromere
gene
post-transcriptional processing
mitosis
31. Bead-like structure in chromatin - composed of a short length of DNA wrapped around a core of histone proteins
anther
transduction
catabolism
nucleosome
32. The regular sequence of growth and division that cells undergo
facilitated diffusion
alleles
substrate
cell cycle
33. Body of a chloroplast containing grana
carbon dioxide fixation
facilitated diffusion
stroma
centrioles
34. The male reproductive organ of a flower consisting of anther - filament - and pollen
stamen
cell cycle
fermentation
centromere
35. The first stage of mitosis - forming spindle fibres attached to the centromere
endocytic vesicles
codon
prophase
organelles
36. Set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes
centrioles
filament
transformation
metabolism
37. Reducing the ploidy level of nucleus from diploid to haploid in meiotic cell division
reduction
carbon dioxide fixation
stigma
anabolism
38. Strong layer around the cell membrane in plants - algae - and some bacteria made of cellulose and lignin
genome
transformation
cell wall
grana
39. The stalk of a stamen that supports the anther
meiosis
virus
filament
perennial
40. Cells that lack a membrane-bound nucleus and membrane-bound organelles
prokaryotes
prosthetic group
active transport
cell
41. Part of stem where growth occurs - contains meristem tissue that is capable of quick growth
inhibitor
shoot apex
nuclear pores
tonoplast
42. Cell organelle filled with enyzmes need to break down certain materials in the cells
ovary
lysosomes
cytokinesis
chlorophyll
43. Sticky portion at the top of the style which traps pollen
transcription
microtubules
stigma
cristae
44. Two identical chromosomes that split and contain the same genetic material
anabolism
chromatids
DNA
microfilaments
45. Vacuole membrane
substrate
tonoplast
biosynthesis
angiosperms
46. Hollow tubes of protein about 25 nanometers in diameter - support the cell and moves organelles within the cell
stamen
microtubules
vascular plants
codon
47. Passive transport of materials across a plasma membrane by transport proteins embedded in the plasma membrane
facilitated diffusion
active transport
inhibitor
gymnosperms
48. Process by which a cell releases large amounts of material
gene
facilitated diffusion
nuclear pores
exocytosis
49. The part of the stamen that contains pollen
metabolism
stroma
telophase
anther
50. Matching Chromosomes that are similar but not identical
homologs
tonoplast
eukoryotic cells
biosynthesis