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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. Anaerobic cellular respiration in which pyruvic acid is broken down into end products such as lactic acid
fermentation
meiosis
ovules
anther
2. The process whereby genetic information coded in messenger RNA directs the formation of a specific protein at a ribosome in the cytoplasm through tRNA
endocytic vesicles
translation
golgi apparatus
tonoplast
3. Passive transport of materials across a plasma membrane by transport proteins embedded in the plasma membrane
ribosomes
facilitated diffusion
photolysis
active site
4. Disk-like plates which are the site of photosynthesis in chloroplasts
grana
stamen
organism
secretory vesicles
5. Cell organelle filled with enyzmes need to break down certain materials in the cells
lysosomes
transcription
prosthetic group
eukoryotic cells
6. Cell division which produces two identical cells
mitosis
nucleolus
exocytosis
cell
7. A cell having two sets of chromosomes or twice the haploid number
prokaryotes
gymnosperms
stamen
diploid
8. (adenosine triphosphate) main energy source that cells use for most of their work
ATP
facilitated diffusion
DNA
endocytic vesicles
9. Green pigment contained in the grana
active site
virus
gametes
chlorophyll
10. The regular sequence of growth and division that cells undergo
lysosomes
nuclear pores
cell cycle
endocytic vesicles
11. The stalk of a stamen that supports the anther
annuals
carbon dioxide fixation
eukoryotic cells
filament
12. Set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes
virus
metabolism
homologs
microtubules
13. Has a nucleus - has organelles or other cell parts
ovules
organism
eukoryotic cells
codon
14. Small structures in the cytoplasm of a cell that do special jobs
organelles
ovary
microfilaments
exocytosis
15. Reproductive cells - have only half the number of chromosomes
catabolism
ovary
gametes
ATP
16. Modifications of pre-mRNA that make it into mature mRNA - so that it is ready for protein synthesis
prophase
biennial
post-transcriptional processing
endocytic vesicles
17. In photosynthesis - this is the splitting of water by light
inhibitor
photolysis
fermentation
codon
18. Small - dense region within most nuclei in which the assembly of RNA proteins begins
nucleolus
stamen
facilitated diffusion
mutation
19. Classification of plant which survives only a single season
facilitated diffusion
annuals
ATP
electron transport
20. Process by which a cell releases large amounts of material
stigma
fermentation
cell cycle
exocytosis
21. Particle made up of DNA - RNA - protein - and in some cases lipids that can only replicate only by infecting living cells
grana
virus
cell cycle
substrate
22. Division of the cytoplasm during cell division - new cell is formed
organism
mitosis
electron microscope
cytokinesis
23. First step in releasing the energy of glucose - in which a molecule of glucose is broken into two molecules of pyruvic acid
mitosis
glycolysis
enzymes
genome
24. Sticky portion at the top of the style which traps pollen
ovary
perennial
stigma
stroma
25. A non-protein - but organic - molecule (such as vitamin) that is covalently bound to an enzyme as part of the active site
angiosperms
cytokinesis
filament
prosthetic group
26. Process of building up complex materials (proteins) from simple materials
anabolism
photolysis
vacuole
alleles
27. Structure within ovary of plant that contains egg cells
eukoryotic cells
organelles
cell
ovules
28. 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)
stigma
electron transport
codon
golgi apparatus
29. Hollow tubes of protein about 25 nanometers in diameter - support the cell and moves organelles within the cell
cytoskeleton
reduction
genome
microtubules
30. The part of the stamen that contains pollen
anther
metabolism
nucleolus
tonoplast
31. Site of protein synthesis. Free ribosomes - float unattached; attached ribosomes - attached to the ER
cell membrane
vascular plants
gene
ribosomes
32. A long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix
perennial
DNA
microfilaments
transformation
33. Smallest unit of most living things
centromere
tonoplast
cell
biosynthesis
34. The organic process whereby the DNA sequence in a gene is copied into mRNA
perennial
transformation
catabolism
transcription
35. Stores - packages and ships proteins
ATP
cytoskeleton
golgi apparatus
virus
36. Living thing
organism
stroma
chlorophyll
golgi apparatus
37. The part of an enzyme where the chemical reaction occurs
active site
cristae
cell membrane
angiosperms
38. Stage of cellular respiration that finishes the breakdown of pyruvic acid molecules to carbon dioxide - releasing energy
organism
DNA
krebs cycle
microvilli
39. Plants that grow year after year
perennial
post-transcriptional processing
glycolysis
exocytosis
40. Matching Chromosomes that are similar but not identical
DNA
homologs
pistil
metaphase
41. Classification of plant whose life cycle survives two seasons
ribosomes
haploid
biennial
endosymbiont hypothesis
42. The male reproductive organ of a flower consisting of anther - filament - and pollen
ovules
nuclear pores
substrate
stamen
43. Formed when cell membrane surrounds a molecule outside the cell and ingests it
cristae
carbon dioxide fixation
endocytic vesicles
prophase
44. The process of transfering genetic material from one cell to another
transduction
virus
chromatids
anabolism
45. The complete genetic material contained in an individual
angiosperms
ovules
carbon dioxide fixation
genome
46. Change in a DNA sequence that affects genetic information
mutation
biosynthesis
haploid
cytokinesis
47. Pores which allows materials to move in and out of the cell nucleus
nuclear pores
mitosis
genome
cristae
48. The substance acted upon by an enzyme
substrate
biosynthesis
facilitated diffusion
cell membrane
49. Transport of a substance across a cell membrane against the concentration gradient
active transport
cristae
diploid
organelles
50. Composed of a bilayer of lipids embedded with globular proteins
cell membrane
codon
organelles
ovules