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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. A cell having two sets of chromosomes or twice the haploid number
transformation
diploid
haploid
pistil
2. Set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes
metabolism
translation
annuals
vascular plants
3. The regular sequence of growth and division that cells undergo
cell cycle
transformation
gene
vascular plants
4. Cells that lack a membrane-bound nucleus and membrane-bound organelles
prokaryotes
ATP
DNA
vascular plants
5. A period during which the cell grows - G1 - copies its DNA - S - and synthesizes proteins - G2
interphase
organism
transcription
biosynthesis
6. The final stage of mitosis or meiosis - during which a nuclear membrane forms around each set of new chromosomes
endosymbiont hypothesis
cytokinesis
cell wall
telophase
7. The stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle
cytoskeleton
ribosomes
fermentation
anaphase
8. First step in releasing the energy of glucose - in which a molecule of glucose is broken into two molecules of pyruvic acid
organelles
fermentation
cofactor
glycolysis
9. Formed when cell membrane surrounds a molecule outside the cell and ingests it
endocytic vesicles
cell
angiosperms
exocytosis
10. Particle made up of DNA - RNA - protein - and in some cases lipids that can only replicate only by infecting living cells
metabolism
prokaryotes
enzymes
virus
11. Living thing
prophase
crossing over
organism
eukoryotic cells
12. Cell division which produces two identical cells
cell cycle
biennial
mitosis
telophase
13. Body of a chloroplast containing grana
enzymes
centrioles
stroma
shoot apex
14. Reproductive cells - have only half the number of chromosomes
lysosomes
prosthetic group
gametes
transduction
15. Smallest unit of most living things
cell
cell membrane
reduction
translation
16. Division of the cytoplasm during cell division - new cell is formed
mitochondria
homologs
cytokinesis
cristae
17. Anaerobic cellular respiration in which pyruvic acid is broken down into end products such as lactic acid
chromatin
transformation
fermentation
annuals
18. Structure within ovary of plant that contains egg cells
genome
ovules
fermentation
endoplasmic reticulum
19. Classification of plant whose life cycle survives two seasons
stamen
enzymes
biennial
cofactor
20. The male reproductive organ of a flower consisting of anther - filament - and pollen
biennial
glycolysis
haploid
stamen
21. Change in a DNA sequence that affects genetic information
mutation
organelles
meiosis
reduction
22. The interchange of sections between pairing homologous chromosomes during the prophase of meiosis
crossing over
chlorophyll
meiosis
vacuole
23. Matching Chromosomes that are similar but not identical
anther
vacuole
homologs
transformation
24. The process of transfering genetic material from one cell to another
exocytosis
translation
microtubules
transduction
25. Part of stem where growth occurs - contains meristem tissue that is capable of quick growth
shoot apex
cofactor
biosynthesis
microfilaments
26. Consists of DNA tightly coiled around proteins
chromatin
annuals
secretory vesicles
codon
27. Double-stranded chains of proteins which give structure to the cell
microfilaments
eukoryotic cells
cytokinesis
homologs
28. The substance acted upon by an enzyme
substrate
nucleolus
pistil
reduction
29. Photosynthetic reaction in which carbon dioxide is attached to an organic compound (glucose - polysaccharides)
carbon dioxide fixation
organelles
ribosomes
virus
30. Area where the chromatids of a chromosome are attached
DNA
virus
nucleolus
centromere
31. Powerhouse of the cell - organelle that is the site of ATP (energy) production
mitochondria
ATP
filament
meiosis
32. The female part of a flower composed of ovary and style and stigma and ovules
pistil
exocytosis
ribosomes
interphase
33. Projections on cell membrane increase surface area
endoplasmic reticulum
crossing over
microvilli
transcription
34. The first stage of mitosis - forming spindle fibres attached to the centromere
active transport
prophase
cristae
inhibitor
35. Classification of plant which forms seeds inside a protective chamber called an ovary - inside a flower
microvilli
angiosperms
diploid
secretory vesicles
36. Hollow tubes of protein about 25 nanometers in diameter - support the cell and moves organelles within the cell
enzymes
ovules
microtubules
virus
37. Bead-like structure in chromatin - composed of a short length of DNA wrapped around a core of histone proteins
anther
ATP
glycolysis
nucleosome
38. Different forms of a gene
anaphase
alleles
inhibitor
active transport
39. Stage of cellular respiration that finishes the breakdown of pyruvic acid molecules to carbon dioxide - releasing energy
nucleosome
enzymes
meiosis
krebs cycle
40. Sticky portion at the top of the style which traps pollen
prokaryotes
ovary
diploid
stigma
41. Three-nucleotide sequence on messenger RNA that codes for a single amino acid
biosynthesis
vascular plants
codon
facilitated diffusion
42. Cell division that produces reproductive cells in sexually reproducing organisms
haploid
meiosis
reduction
stamen
43. The second phase of mitosis - during which the chromosomes line up across the center of the cell
metaphase
endoplasmic reticulum
gametes
centromere
44. Breakdown of more complex substances into simpler ones with release of energy
stigma
microfilaments
catabolism
electron transport
45. Stalk that supports the flower
virus
pedicel
perennial
mutation
46. Pores which allows materials to move in and out of the cell nucleus
anther
nuclear pores
anabolism
exocytosis
47. Two identical chromosomes that split and contain the same genetic material
cell cycle
glycolysis
chromatids
haploid
48. Classification of plant which survives only a single season
prophase
genome
centrioles
annuals
49. Modifications of pre-mRNA that make it into mature mRNA - so that it is ready for protein synthesis
filament
post-transcriptional processing
nuclear pores
stroma
50. Provides structural support to a cell composed of microtubules - microfilaments - centrioles
electron microscope
exocytosis
crossing over
cytoskeleton
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