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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. Modification of a cell by the incorporation of exogenous DNA
annuals
prosthetic group
transformation
virus
2. A non-protein - but organic - molecule (such as vitamin) that is covalently bound to an enzyme as part of the active site
alleles
prosthetic group
DNA
cofactor
3. Vacuole membrane
endocytic vesicles
substrate
glycolysis
tonoplast
4. Process of building up complex materials (proteins) from simple materials
krebs cycle
genome
anabolism
transformation
5. Passive transport of materials across a plasma membrane by transport proteins embedded in the plasma membrane
biennial
facilitated diffusion
inhibitor
nucleosome
6. Has a nucleus - has organelles or other cell parts
tonoplast
haploid
eukoryotic cells
endoplasmic reticulum
7. Body of a chloroplast containing grana
filament
inhibitor
stroma
genome
8. Double-stranded chains of proteins which give structure to the cell
microfilaments
secretory vesicles
ovules
metabolism
9. Composed of a bilayer of lipids embedded with globular proteins
prophase
telophase
fermentation
cell membrane
10. The first stage of mitosis - forming spindle fibres attached to the centromere
cofactor
prophase
cristae
translation
11. Smallest unit of most living things
genome
anabolism
cell
eukoryotic cells
12. Area where the chromatids of a chromosome are attached
glycolysis
organelles
centromere
transcription
13. Sequence of DNA that codes for a protein and thus determines a trait
gene
krebs cycle
pistil
exocytosis
14. A long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix
facilitated diffusion
gymnosperms
genome
DNA
15. Packaged protein or other substance produced by golgi apparatus/endoplasmic reticulum
organism
anther
electron transport
secretory vesicles
16. Anaerobic cellular respiration in which pyruvic acid is broken down into end products such as lactic acid
annuals
ATP
fermentation
anther
17. The female part of a flower composed of ovary and style and stigma and ovules
stroma
transformation
pistil
transcription
18. Plants that grow year after year
perennial
stroma
secretory vesicles
microtubules
19. Modifications of pre-mRNA that make it into mature mRNA - so that it is ready for protein synthesis
gametes
post-transcriptional processing
lysosomes
chromatids
20. Small structures in the cytoplasm of a cell that do special jobs
nucleolus
organelles
codon
catabolism
21. Reducing the ploidy level of nucleus from diploid to haploid in meiotic cell division
stroma
reduction
codon
gymnosperms
22. Transport of a substance across a cell membrane against the concentration gradient
transduction
DNA
crossing over
active transport
23. Structure within ovary of plant that contains egg cells
photolysis
haploid
reduction
ovules
24. Reproductive cells - have only half the number of chromosomes
gymnosperms
transduction
gametes
krebs cycle
25. The substance acted upon by an enzyme
metaphase
centromere
substrate
inhibitor
26. The part of an enzyme where the chemical reaction occurs
active site
ovules
enzymes
carbon dioxide fixation
27. The stalk of a stamen that supports the anther
filament
vacuole
DNA
prosthetic group
28. Sticky portion at the top of the style which traps pollen
centromere
stigma
diploid
cristae
29. Three-nucleotide sequence on messenger RNA that codes for a single amino acid
codon
grana
transcription
secretory vesicles
30. The process of transfering genetic material from one cell to another
transduction
carbon dioxide fixation
mitosis
secretory vesicles
31. A cell having two sets of chromosomes or twice the haploid number
cell membrane
diploid
cytokinesis
transcription
32. Breakdown of more complex substances into simpler ones with release of energy
catabolism
fermentation
secretory vesicles
chromatids
33. The second phase of mitosis - during which the chromosomes line up across the center of the cell
metaphase
pedicel
transduction
biennial
34. Theory which suggests mitochondria and chloroplasts were once prokaryotic organisms in a symbiotic relationship with eykorytic cells
anaphase
centromere
secretory vesicles
endosymbiont hypothesis
35. Tubes - One of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope; play a role in cell division.
transformation
centrioles
pistil
electron transport
36. In photosynthesis - this is the splitting of water by light
mitosis
genome
endoplasmic reticulum
photolysis
37. Two identical chromosomes that split and contain the same genetic material
electron transport
photolysis
chromatids
interphase
38. Membrane-bound organelle that stores water and soluble substances
vacuole
angiosperms
chlorophyll
diploid
39. The stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle
anaphase
carbon dioxide fixation
catabolism
translation
40. A substance that retards or stops enzymatic activity
inhibitor
telophase
angiosperms
biosynthesis
41. Formed when cell membrane surrounds a molecule outside the cell and ingests it
endocytic vesicles
perennial
metaphase
inhibitor
42. Production of a chemical compound by a living organism
transduction
chromatin
biosynthesis
ribosomes
43. Classication of plant which produce seeds which are 'naked' (in cones)
eukoryotic cells
golgi apparatus
virus
gymnosperms
44. Living thing
biennial
golgi apparatus
organism
anther
45. The interchange of sections between pairing homologous chromosomes during the prophase of meiosis
crossing over
endosymbiont hypothesis
carbon dioxide fixation
cell
46. Pores which allows materials to move in and out of the cell nucleus
chlorophyll
chromatin
nuclear pores
inhibitor
47. 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
catabolism
metaphase
endoplasmic reticulum
reduction
48. Different forms of a gene
microtubules
anaphase
alleles
exocytosis
49. Change in a DNA sequence that affects genetic information
pedicel
cofactor
mutation
meiosis
50. Strong layer around the cell membrane in plants - algae - and some bacteria made of cellulose and lignin
transduction
pedicel
cell wall
mitochondria