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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. The second phase of mitosis - during which the chromosomes line up across the center of the cell
catabolism
metaphase
carbon dioxide fixation
secretory vesicles
2. Two identical chromosomes that split and contain the same genetic material
shoot apex
chromatids
cell wall
filament
3. Process by which a cell releases large amounts of material
ovary
stigma
exocytosis
facilitated diffusion
4. Cell organelle filled with enyzmes need to break down certain materials in the cells
lysosomes
cytokinesis
active transport
prokaryotes
5. Disk-like plates which are the site of photosynthesis in chloroplasts
haploid
grana
stroma
transcription
6. Division of the cytoplasm during cell division - new cell is formed
stamen
fermentation
cytokinesis
anaphase
7. Classification of plant whose life cycle survives two seasons
centrioles
stamen
biennial
mutation
8. Small - dense region within most nuclei in which the assembly of RNA proteins begins
chromatin
eukoryotic cells
nucleolus
anabolism
9. Pores which allows materials to move in and out of the cell nucleus
nuclear pores
electron microscope
stamen
pedicel
10. Anaerobic cellular respiration in which pyruvic acid is broken down into end products such as lactic acid
chromatin
cell membrane
secretory vesicles
fermentation
11. Powerhouse of the cell - organelle that is the site of ATP (energy) production
endocytic vesicles
mitochondria
fermentation
microfilaments
12. The interchange of sections between pairing homologous chromosomes during the prophase of meiosis
stamen
crossing over
chromatin
mitochondria
13. Cells that lack a membrane-bound nucleus and membrane-bound organelles
prokaryotes
mutation
alleles
glycolysis
14. Formed when cell membrane surrounds a molecule outside the cell and ingests it
microfilaments
endocytic vesicles
microvilli
lysosomes
15. Strong layer around the cell membrane in plants - algae - and some bacteria made of cellulose and lignin
cell wall
stroma
cytoskeleton
transformation
16. A long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix
cofactor
haploid
DNA
cell wall
17. 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)
grana
vascular plants
microfilaments
electron transport
18. Change in a DNA sequence that affects genetic information
prokaryotes
anther
metabolism
mutation
19. Photosynthetic reaction in which carbon dioxide is attached to an organic compound (glucose - polysaccharides)
active site
diploid
carbon dioxide fixation
endoplasmic reticulum
20. Set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes
tonoplast
secretory vesicles
transformation
metabolism
21. Classication of plant which produce seeds which are 'naked' (in cones)
gymnosperms
endoplasmic reticulum
cell membrane
transformation
22. Double-stranded chains of proteins which give structure to the cell
microfilaments
mitosis
catabolism
endosymbiont hypothesis
23. First step in releasing the energy of glucose - in which a molecule of glucose is broken into two molecules of pyruvic acid
carbon dioxide fixation
cell membrane
microfilaments
glycolysis
24. 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
gymnosperms
active site
fermentation
25. Consists of DNA tightly coiled around proteins
centrioles
electron transport
chromatin
chromatids
26. Part of stem where growth occurs - contains meristem tissue that is capable of quick growth
mutation
shoot apex
ribosomes
prosthetic group
27. The part of an enzyme where the chemical reaction occurs
nucleolus
secretory vesicles
meiosis
active site
28. Breakdown of more complex substances into simpler ones with release of energy
gametes
secretory vesicles
interphase
catabolism
29. A cell having two sets of chromosomes or twice the haploid number
meiosis
ovary
exocytosis
diploid
30. The substance acted upon by an enzyme
reduction
substrate
cofactor
fermentation
31. A period during which the cell grows - G1 - copies its DNA - S - and synthesizes proteins - G2
shoot apex
perennial
interphase
prokaryotes
32. Area where the chromatids of a chromosome are attached
centromere
nucleosome
enzymes
centrioles
33. Reducing the ploidy level of nucleus from diploid to haploid in meiotic cell division
alleles
cell cycle
cofactor
reduction
34. Numerous folds in the inner membrane of a mitochondrion - the site of cellular respiration
ATP
biosynthesis
exocytosis
cristae
35. The regular sequence of growth and division that cells undergo
pedicel
microfilaments
cell cycle
substrate
36. Living thing
anabolism
metabolism
organism
prokaryotes
37. Proteins that act as biological catalysts
facilitated diffusion
golgi apparatus
electron microscope
enzymes
38. Stalk that supports the flower
ATP
annuals
ovary
pedicel
39. Sequence of DNA that codes for a protein and thus determines a trait
meiosis
gene
ATP
nuclear pores
40. The female part of a flower composed of ovary and style and stigma and ovules
cell membrane
gene
pistil
mitosis
41. Structure within ovary of plant that contains egg cells
stigma
ovules
krebs cycle
photolysis
42. Theory which suggests mitochondria and chloroplasts were once prokaryotic organisms in a symbiotic relationship with eykorytic cells
endosymbiont hypothesis
cell
grana
cofactor
43. Vacuole membrane
tonoplast
transduction
glycolysis
krebs cycle
44. Small structures in the cytoplasm of a cell that do special jobs
nuclear pores
organelles
golgi apparatus
active transport
45. Site of protein synthesis. Free ribosomes - float unattached; attached ribosomes - attached to the ER
cell cycle
cristae
ribosomes
tonoplast
46. Cell division which produces two identical cells
biennial
reduction
mitosis
transformation
47. The first stage of mitosis - forming spindle fibres attached to the centromere
transcription
reduction
prophase
prosthetic group
48. Body of a chloroplast containing grana
catabolism
stroma
prosthetic group
organism
49. Stores - packages and ships proteins
gene
anabolism
golgi apparatus
transformation
50. Modifications of pre-mRNA that make it into mature mRNA - so that it is ready for protein synthesis
annuals
shoot apex
post-transcriptional processing
mitochondria