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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. Vacuole membrane
tonoplast
inhibitor
nucleolus
chromatin
2. Classification of plant which survives only a single season
annuals
anabolism
post-transcriptional processing
pistil
3. Change in a DNA sequence that affects genetic information
biennial
mutation
prophase
organelles
4. (adenosine triphosphate) main energy source that cells use for most of their work
alleles
ATP
metaphase
ovary
5. The substance acted upon by an enzyme
gametes
virus
substrate
cell
6. Has a nucleus - has organelles or other cell parts
cytokinesis
ovary
eukoryotic cells
diploid
7. Strong layer around the cell membrane in plants - algae - and some bacteria made of cellulose and lignin
ovary
translation
filament
cell wall
8. Tubes - One of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope; play a role in cell division.
alleles
organism
shoot apex
centrioles
9. Have tissues made of cells that transport water and nutrients throughout the plant
codon
endocytic vesicles
vascular plants
transduction
10. A non-protein - but organic - molecule (such as vitamin) that is covalently bound to an enzyme as part of the active site
prosthetic group
annuals
vacuole
enzymes
11. Matching Chromosomes that are similar but not identical
nucleosome
homologs
annuals
cytoskeleton
12. Cell organelle filled with enyzmes need to break down certain materials in the cells
lysosomes
cristae
active site
anaphase
13. Reproductive cells - have only half the number of chromosomes
genome
gametes
facilitated diffusion
vascular plants
14. The final stage of mitosis or meiosis - during which a nuclear membrane forms around each set of new chromosomes
filament
ovary
telophase
nucleosome
15. The interchange of sections between pairing homologous chromosomes during the prophase of meiosis
crossing over
cytokinesis
biosynthesis
tonoplast
16. Different forms of a gene
alleles
ovules
catabolism
biosynthesis
17. Division of the cytoplasm during cell division - new cell is formed
mutation
cofactor
cytokinesis
pistil
18. Small - dense region within most nuclei in which the assembly of RNA proteins begins
mitochondria
filament
virus
nucleolus
19. The stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle
metabolism
tonoplast
substrate
anaphase
20. Stalk that supports the flower
meiosis
filament
pedicel
interphase
21. Modifications of pre-mRNA that make it into mature mRNA - so that it is ready for protein synthesis
post-transcriptional processing
vacuole
electron transport
prokaryotes
22. The female part of a flower composed of ovary and style and stigma and ovules
golgi apparatus
pistil
metabolism
reduction
23. Stage of cellular respiration that finishes the breakdown of pyruvic acid molecules to carbon dioxide - releasing energy
nucleosome
ovules
catabolism
krebs cycle
24. 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
ovules
shoot apex
prosthetic group
25. Projections on cell membrane increase surface area
post-transcriptional processing
homologs
microvilli
transcription
26. Anaerobic cellular respiration in which pyruvic acid is broken down into end products such as lactic acid
photolysis
gymnosperms
codon
fermentation
27. The male reproductive organ of a flower consisting of anther - filament - and pollen
electron microscope
endoplasmic reticulum
cell membrane
stamen
28. Classification of plant whose life cycle survives two seasons
active transport
gymnosperms
biennial
inhibitor
29. Numerous folds in the inner membrane of a mitochondrion - the site of cellular respiration
cristae
cell wall
krebs cycle
centrioles
30. The second phase of mitosis - during which the chromosomes line up across the center of the cell
annuals
endocytic vesicles
metaphase
stigma
31. Part of stem where growth occurs - contains meristem tissue that is capable of quick growth
shoot apex
gametes
electron microscope
pistil
32. Stores - packages and ships proteins
enzymes
ovary
golgi apparatus
active site
33. Formed when cell membrane surrounds a molecule outside the cell and ingests it
transduction
nuclear pores
endocytic vesicles
ovules
34. In photosynthesis - this is the splitting of water by light
photolysis
meiosis
virus
microvilli
35. Disk-like plates which are the site of photosynthesis in chloroplasts
facilitated diffusion
grana
inhibitor
stigma
36. Sequence of DNA that codes for a protein and thus determines a trait
mitochondria
nucleosome
gene
exocytosis
37. Production of a chemical compound by a living organism
diploid
virus
photolysis
biosynthesis
38. Proteins that act as biological catalysts
enzymes
microfilaments
filament
alleles
39. Hollow tubes of protein about 25 nanometers in diameter - support the cell and moves organelles within the cell
DNA
prophase
microtubules
genome
40. Small structures in the cytoplasm of a cell that do special jobs
fermentation
interphase
organelles
alleles
41. Provides structural support to a cell composed of microtubules - microfilaments - centrioles
shoot apex
transcription
active transport
cytoskeleton
42. A long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix
prosthetic group
grana
DNA
vascular plants
43. Living thing
organism
telophase
mitosis
facilitated diffusion
44. Cell division that produces reproductive cells in sexually reproducing organisms
shoot apex
gametes
catabolism
meiosis
45. Set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes
genome
active site
metabolism
interphase
46. The organ that bears the ovules of a flower - base of the pistil
ovary
cell membrane
microvilli
crossing over
47. Reducing the ploidy level of nucleus from diploid to haploid in meiotic cell division
reduction
stamen
cytoskeleton
transduction
48. Passive transport of materials across a plasma membrane by transport proteins embedded in the plasma membrane
vacuole
facilitated diffusion
post-transcriptional processing
nucleolus
49. Pores which allows materials to move in and out of the cell nucleus
exocytosis
nuclear pores
meiosis
mutation
50. Smallest unit of most living things
eukoryotic cells
cell
perennial
biennial