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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
metaphase
shoot apex
nucleosome
facilitated diffusion
2. Reducing the ploidy level of nucleus from diploid to haploid in meiotic cell division
reduction
metaphase
metabolism
meiosis
3. Structure within ovary of plant that contains egg cells
stigma
exocytosis
ovules
crossing over
4. Has a nucleus - has organelles or other cell parts
vacuole
mitochondria
nucleolus
eukoryotic cells
5. Membrane-bound organelle that stores water and soluble substances
exocytosis
alleles
vacuole
tonoplast
6. Classification of plant which survives only a single season
cell cycle
biosynthesis
annuals
stroma
7. Have tissues made of cells that transport water and nutrients throughout the plant
transformation
angiosperms
haploid
vascular plants
8. Cell organelle filled with enyzmes need to break down certain materials in the cells
inhibitor
lysosomes
annuals
mitosis
9. A long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix
gene
nuclear pores
perennial
DNA
10. Hollow tubes of protein about 25 nanometers in diameter - support the cell and moves organelles within the cell
mitosis
microtubules
microvilli
gymnosperms
11. Pores which allows materials to move in and out of the cell nucleus
stamen
nuclear pores
genome
biennial
12. Proteins that act as biological catalysts
chlorophyll
enzymes
organelles
DNA
13. Cell division which produces two identical cells
pedicel
mitosis
cell cycle
stroma
14. A non-protein - but organic - molecule (such as vitamin) that is covalently bound to an enzyme as part of the active site
cristae
prosthetic group
cell
enzymes
15. Division of the cytoplasm during cell division - new cell is formed
gymnosperms
centromere
cytokinesis
electron microscope
16. Green pigment contained in the grana
chlorophyll
ribosomes
haploid
electron transport
17. The stalk of a stamen that supports the anther
microfilaments
nuclear pores
filament
centrioles
18. The female part of a flower composed of ovary and style and stigma and ovules
alleles
gene
pistil
DNA
19. Cells that lack a membrane-bound nucleus and membrane-bound organelles
metabolism
prokaryotes
organism
genome
20. Used to examine tiny cell organelles
substrate
perennial
mitochondria
electron microscope
21. Transport of a substance across a cell membrane against the concentration gradient
carbon dioxide fixation
substrate
active site
active transport
22. Process by which a cell releases large amounts of material
krebs cycle
golgi apparatus
exocytosis
endocytic vesicles
23. 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)
transduction
mutation
anabolism
electron transport
24. Cell division that produces reproductive cells in sexually reproducing organisms
pedicel
meiosis
active transport
diploid
25. A substance that retards or stops enzymatic activity
interphase
inhibitor
microvilli
eukoryotic cells
26. Site of protein synthesis. Free ribosomes - float unattached; attached ribosomes - attached to the ER
gametes
ribosomes
endosymbiont hypothesis
endoplasmic reticulum
27. The part of an enzyme where the chemical reaction occurs
cytokinesis
anther
active site
electron microscope
28. Classification of plant whose life cycle survives two seasons
biennial
cytokinesis
centrioles
catabolism
29. Classification of plant which forms seeds inside a protective chamber called an ovary - inside a flower
facilitated diffusion
angiosperms
metabolism
substrate
30. Provides structural support to a cell composed of microtubules - microfilaments - centrioles
cytoskeleton
electron transport
nucleosome
centromere
31. Matching Chromosomes that are similar but not identical
pedicel
homologs
krebs cycle
microfilaments
32. The stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle
anaphase
golgi apparatus
stigma
anabolism
33. Disk-like plates which are the site of photosynthesis in chloroplasts
perennial
nucleosome
grana
telophase
34. Three-nucleotide sequence on messenger RNA that codes for a single amino acid
ribosomes
codon
cytoskeleton
mitochondria
35. Smallest unit of most living things
ATP
interphase
pedicel
cell
36. Double-stranded chains of proteins which give structure to the cell
nuclear pores
microfilaments
ATP
ovary
37. Packaged protein or other substance produced by golgi apparatus/endoplasmic reticulum
secretory vesicles
annuals
prokaryotes
biennial
38. (adenosine triphosphate) main energy source that cells use for most of their work
crossing over
ATP
interphase
substrate
39. Living thing
organism
genome
prosthetic group
nucleolus
40. Formed when cell membrane surrounds a molecule outside the cell and ingests it
prosthetic group
endocytic vesicles
pistil
centromere
41. The organ that bears the ovules of a flower - base of the pistil
transformation
facilitated diffusion
stroma
ovary
42. 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
endoplasmic reticulum
enzymes
homologs
inhibitor
43. The organic process whereby the DNA sequence in a gene is copied into mRNA
transcription
photolysis
ovary
gene
44. The regular sequence of growth and division that cells undergo
glycolysis
cell cycle
carbon dioxide fixation
active site
45. Photosynthetic reaction in which carbon dioxide is attached to an organic compound (glucose - polysaccharides)
gametes
carbon dioxide fixation
DNA
genome
46. Plants that grow year after year
gymnosperms
cell wall
nuclear pores
perennial
47. The process whereby genetic information coded in messenger RNA directs the formation of a specific protein at a ribosome in the cytoplasm through tRNA
microtubules
glycolysis
ATP
translation
48. The male reproductive organ of a flower consisting of anther - filament - and pollen
stigma
cell cycle
anaphase
stamen
49. Powerhouse of the cell - organelle that is the site of ATP (energy) production
mitochondria
anaphase
alleles
vacuole
50. Projections on cell membrane increase surface area
endoplasmic reticulum
substrate
codon
microvilli