SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
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. Stores - packages and ships proteins
biosynthesis
ATP
golgi apparatus
fermentation
2. Sequence of DNA that codes for a protein and thus determines a trait
gene
ovules
microtubules
electron transport
3. Modifications of pre-mRNA that make it into mature mRNA - so that it is ready for protein synthesis
transcription
translation
grana
post-transcriptional processing
4. Process by which a cell releases large amounts of material
exocytosis
angiosperms
annuals
gymnosperms
5. A substance that must join with the enzyme to enable it to fit the substrate
diploid
microvilli
endoplasmic reticulum
cofactor
6. Cell division that produces reproductive cells in sexually reproducing organisms
nucleosome
perennial
pedicel
meiosis
7. Passive transport of materials across a plasma membrane by transport proteins embedded in the plasma membrane
grana
facilitated diffusion
active transport
perennial
8. Pores which allows materials to move in and out of the cell nucleus
centrioles
telophase
vacuole
nuclear pores
9. Disk-like plates which are the site of photosynthesis in chloroplasts
nuclear pores
haploid
grana
homologs
10. Strong layer around the cell membrane in plants - algae - and some bacteria made of cellulose and lignin
organism
biennial
cell wall
krebs cycle
11. (adenosine triphosphate) main energy source that cells use for most of their work
photolysis
ATP
active site
ovules
12. Change in a DNA sequence that affects genetic information
mitochondria
mutation
filament
vacuole
13. Numerous folds in the inner membrane of a mitochondrion - the site of cellular respiration
homologs
genome
cristae
cofactor
14. Double-stranded chains of proteins which give structure to the cell
ATP
telophase
vascular plants
microfilaments
15. Stage of cellular respiration that finishes the breakdown of pyruvic acid molecules to carbon dioxide - releasing energy
nuclear pores
cofactor
krebs cycle
pedicel
16. Tubes - One of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope; play a role in cell division.
centrioles
reduction
filament
stroma
17. Photosynthetic reaction in which carbon dioxide is attached to an organic compound (glucose - polysaccharides)
golgi apparatus
carbon dioxide fixation
centromere
mitosis
18. Set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes
cofactor
eukoryotic cells
metabolism
exocytosis
19. Living thing
organism
biennial
transcription
krebs cycle
20. Area where the chromatids of a chromosome are attached
cytokinesis
microfilaments
centromere
cell cycle
21. Classication of plant which produce seeds which are 'naked' (in cones)
alleles
transcription
active site
gymnosperms
22. Theory which suggests mitochondria and chloroplasts were once prokaryotic organisms in a symbiotic relationship with eykorytic cells
reduction
pistil
endosymbiont hypothesis
chromatids
23. A period during which the cell grows - G1 - copies its DNA - S - and synthesizes proteins - G2
substrate
transduction
gymnosperms
interphase
24. Anaerobic cellular respiration in which pyruvic acid is broken down into end products such as lactic acid
centrioles
fermentation
stamen
microfilaments
25. The part of an enzyme where the chemical reaction occurs
active site
cell membrane
stigma
ribosomes
26. Body of a chloroplast containing grana
cofactor
stroma
prosthetic group
chlorophyll
27. Sticky portion at the top of the style which traps pollen
gymnosperms
stigma
pedicel
biosynthesis
28. Have tissues made of cells that transport water and nutrients throughout the plant
eukoryotic cells
nucleolus
nucleosome
vascular plants
29. The second phase of mitosis - during which the chromosomes line up across the center of the cell
diploid
metaphase
cell
reduction
30. The part of the stamen that contains pollen
codon
microtubules
vascular plants
anther
31. The female part of a flower composed of ovary and style and stigma and ovules
active site
pistil
endoplasmic reticulum
transduction
32. The complete genetic material contained in an individual
endocytic vesicles
telophase
cofactor
genome
33. Plants that grow year after year
nucleolus
perennial
nuclear pores
transformation
34. Bead-like structure in chromatin - composed of a short length of DNA wrapped around a core of histone proteins
microfilaments
angiosperms
prophase
nucleosome
35. The organ that bears the ovules of a flower - base of the pistil
anaphase
nuclear pores
secretory vesicles
ovary
36. Site of protein synthesis. Free ribosomes - float unattached; attached ribosomes - attached to the ER
prophase
ribosomes
active site
gene
37. Reducing the ploidy level of nucleus from diploid to haploid in meiotic cell division
biosynthesis
alleles
reduction
angiosperms
38. A long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix
exocytosis
annuals
photolysis
DNA
39. A non-protein - but organic - molecule (such as vitamin) that is covalently bound to an enzyme as part of the active site
ovary
prosthetic group
cell
cofactor
40. The process of transfering genetic material from one cell to another
ovary
cytoskeleton
transduction
meiosis
41. 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
genome
active transport
anaphase
42. The substance acted upon by an enzyme
pistil
centrioles
cell wall
substrate
43. Powerhouse of the cell - organelle that is the site of ATP (energy) production
vascular plants
mitochondria
shoot apex
anabolism
44. Formed when cell membrane surrounds a molecule outside the cell and ingests it
endocytic vesicles
vascular plants
cell cycle
electron microscope
45. Has a nucleus - has organelles or other cell parts
eukoryotic cells
microtubules
stigma
biosynthesis
46. Classification of plant which survives only a single season
exocytosis
nucleolus
annuals
meiosis
47. Cells that lack a membrane-bound nucleus and membrane-bound organelles
secretory vesicles
pistil
prokaryotes
meiosis
48. Different forms of a gene
tonoplast
alleles
secretory vesicles
cell cycle
49. The organic process whereby the DNA sequence in a gene is copied into mRNA
transcription
genome
fermentation
perennial
50. Stalk that supports the flower
pedicel
mutation
eukoryotic cells
ribosomes