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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. Structure within ovary of plant that contains egg cells
interphase
krebs cycle
ovules
organelles
2. Modification of a cell by the incorporation of exogenous DNA
transformation
nuclear pores
nucleolus
crossing over
3. Composed of a bilayer of lipids embedded with globular proteins
transformation
carbon dioxide fixation
cell membrane
nuclear pores
4. The regular sequence of growth and division that cells undergo
tonoplast
translation
cell cycle
stigma
5. Stage of cellular respiration that finishes the breakdown of pyruvic acid molecules to carbon dioxide - releasing energy
catabolism
anabolism
inhibitor
krebs cycle
6. Small - dense region within most nuclei in which the assembly of RNA proteins begins
stroma
carbon dioxide fixation
active transport
nucleolus
7. Small structures in the cytoplasm of a cell that do special jobs
golgi apparatus
organelles
glycolysis
ovary
8. Packaged protein or other substance produced by golgi apparatus/endoplasmic reticulum
secretory vesicles
metabolism
microtubules
active site
9. Change in a DNA sequence that affects genetic information
mutation
ovary
gametes
krebs cycle
10. The process of transfering genetic material from one cell to another
ATP
virus
cell membrane
transduction
11. Three-nucleotide sequence on messenger RNA that codes for a single amino acid
enzymes
fermentation
codon
organism
12. Part of stem where growth occurs - contains meristem tissue that is capable of quick growth
shoot apex
electron transport
exocytosis
cytoskeleton
13. The part of an enzyme where the chemical reaction occurs
microvilli
active site
telophase
golgi apparatus
14. The substance acted upon by an enzyme
angiosperms
organism
biennial
substrate
15. Used to examine tiny cell organelles
krebs cycle
nucleosome
reduction
electron microscope
16. A substance that retards or stops enzymatic activity
perennial
inhibitor
vascular plants
ovules
17. First step in releasing the energy of glucose - in which a molecule of glucose is broken into two molecules of pyruvic acid
endosymbiont hypothesis
microfilaments
ATP
glycolysis
18. Have tissues made of cells that transport water and nutrients throughout the plant
cristae
vascular plants
gymnosperms
annuals
19. A substance that must join with the enzyme to enable it to fit the substrate
cofactor
golgi apparatus
ovary
transformation
20. Classication of plant which produce seeds which are 'naked' (in cones)
cell wall
telophase
gymnosperms
inhibitor
21. 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
cytokinesis
telophase
cell cycle
endoplasmic reticulum
22. The organ that bears the ovules of a flower - base of the pistil
ovary
vascular plants
annuals
electron microscope
23. Bead-like structure in chromatin - composed of a short length of DNA wrapped around a core of histone proteins
nucleosome
microvilli
virus
ATP
24. Double-stranded chains of proteins which give structure to the cell
chromatids
prosthetic group
anabolism
microfilaments
25. In photosynthesis - this is the splitting of water by light
enzymes
photolysis
krebs cycle
nuclear pores
26. Provides structural support to a cell composed of microtubules - microfilaments - centrioles
cytoskeleton
ovary
translation
anaphase
27. Cells that lack a membrane-bound nucleus and membrane-bound organelles
cofactor
genome
microtubules
prokaryotes
28. Breakdown of more complex substances into simpler ones with release of energy
stroma
pedicel
catabolism
grana
29. Powerhouse of the cell - organelle that is the site of ATP (energy) production
nucleosome
photolysis
mitochondria
microtubules
30. Matching Chromosomes that are similar but not identical
vacuole
homologs
enzymes
chromatin
31. Reducing the ploidy level of nucleus from diploid to haploid in meiotic cell division
reduction
glycolysis
krebs cycle
cofactor
32. Area where the chromatids of a chromosome are attached
transformation
golgi apparatus
centromere
anaphase
33. Stores - packages and ships proteins
DNA
fermentation
microtubules
golgi apparatus
34. Strong layer around the cell membrane in plants - algae - and some bacteria made of cellulose and lignin
catabolism
haploid
glycolysis
cell wall
35. Classification of plant which forms seeds inside a protective chamber called an ovary - inside a flower
krebs cycle
grana
angiosperms
ovules
36. Modifications of pre-mRNA that make it into mature mRNA - so that it is ready for protein synthesis
active site
cell
shoot apex
post-transcriptional processing
37. Reproductive cells - have only half the number of chromosomes
virus
centromere
alleles
gametes
38. The complete genetic material contained in an individual
grana
biennial
facilitated diffusion
genome
39. Passive transport of materials across a plasma membrane by transport proteins embedded in the plasma membrane
tonoplast
angiosperms
filament
facilitated diffusion
40. A period during which the cell grows - G1 - copies its DNA - S - and synthesizes proteins - G2
prophase
haploid
interphase
stroma
41. Living thing
translation
grana
organism
cytoskeleton
42. Process by which a cell releases large amounts of material
transcription
active site
interphase
exocytosis
43. The process whereby genetic information coded in messenger RNA directs the formation of a specific protein at a ribosome in the cytoplasm through tRNA
translation
ovary
microfilaments
haploid
44. Consists of DNA tightly coiled around proteins
virus
gametes
nuclear pores
chromatin
45. Projections on cell membrane increase surface area
golgi apparatus
microvilli
telophase
substrate
46. The part of the stamen that contains pollen
endocytic vesicles
anther
carbon dioxide fixation
stigma
47. (adenosine triphosphate) main energy source that cells use for most of their work
ATP
ovules
fermentation
cell
48. The male reproductive organ of a flower consisting of anther - filament - and pollen
haploid
stamen
microfilaments
prophase
49. The first stage of mitosis - forming spindle fibres attached to the centromere
golgi apparatus
transcription
chromatids
prophase
50. Body of a chloroplast containing grana
ribosomes
cell membrane
stroma
vacuole