SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
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. Transport of a substance across a cell membrane against the concentration gradient
electron microscope
cofactor
active transport
substrate
2. Projections on cell membrane increase surface area
microfilaments
virus
fermentation
microvilli
3. Cells that lack a membrane-bound nucleus and membrane-bound organelles
transformation
diploid
prokaryotes
active transport
4. Two identical chromosomes that split and contain the same genetic material
homologs
chromatids
substrate
cell cycle
5. Process of building up complex materials (proteins) from simple materials
genome
anabolism
ovary
electron microscope
6. The female part of a flower composed of ovary and style and stigma and ovules
vacuole
krebs cycle
pistil
endosymbiont hypothesis
7. Cell organelle filled with enyzmes need to break down certain materials in the cells
gene
chromatin
lysosomes
haploid
8. Division of the cytoplasm during cell division - new cell is formed
active transport
cytokinesis
annuals
post-transcriptional processing
9. Classication of plant which produce seeds which are 'naked' (in cones)
centromere
anaphase
mutation
gymnosperms
10. 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)
annuals
gene
electron transport
ovules
11. Formed when cell membrane surrounds a molecule outside the cell and ingests it
nucleolus
endocytic vesicles
homologs
virus
12. Vacuole membrane
grana
haploid
tonoplast
anabolism
13. Has a nucleus - has organelles or other cell parts
meiosis
eukoryotic cells
cell membrane
gametes
14. Sequence of DNA that codes for a protein and thus determines a trait
gene
eukoryotic cells
haploid
active transport
15. A non-protein - but organic - molecule (such as vitamin) that is covalently bound to an enzyme as part of the active site
prosthetic group
active site
translation
substrate
16. The organ that bears the ovules of a flower - base of the pistil
endocytic vesicles
microvilli
ovary
organelles
17. Reducing the ploidy level of nucleus from diploid to haploid in meiotic cell division
grana
alleles
codon
reduction
18. The organic process whereby the DNA sequence in a gene is copied into mRNA
haploid
shoot apex
vacuole
transcription
19. Breakdown of more complex substances into simpler ones with release of energy
catabolism
stroma
vascular plants
transduction
20. Process by which a cell releases large amounts of material
exocytosis
chromatids
perennial
pistil
21. Body of a chloroplast containing grana
chlorophyll
haploid
genome
stroma
22. Tubes - One of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope; play a role in cell division.
centrioles
gametes
nucleosome
exocytosis
23. Three-nucleotide sequence on messenger RNA that codes for a single amino acid
photolysis
endosymbiont hypothesis
inhibitor
codon
24. The first stage of mitosis - forming spindle fibres attached to the centromere
transformation
anabolism
prophase
stroma
25. The process whereby genetic information coded in messenger RNA directs the formation of a specific protein at a ribosome in the cytoplasm through tRNA
substrate
translation
endoplasmic reticulum
biosynthesis
26. The part of an enzyme where the chemical reaction occurs
perennial
active site
microfilaments
exocytosis
27. Classification of plant which forms seeds inside a protective chamber called an ovary - inside a flower
angiosperms
mitosis
transcription
microvilli
28. Modification of a cell by the incorporation of exogenous DNA
biosynthesis
vascular plants
anther
transformation
29. Matching Chromosomes that are similar but not identical
stroma
homologs
carbon dioxide fixation
telophase
30. Change in a DNA sequence that affects genetic information
mutation
metaphase
reduction
secretory vesicles
31. Stores - packages and ships proteins
golgi apparatus
mitosis
cell membrane
diploid
32. Cell division that produces reproductive cells in sexually reproducing organisms
homologs
shoot apex
meiosis
chromatids
33. A period during which the cell grows - G1 - copies its DNA - S - and synthesizes proteins - G2
electron transport
interphase
organism
meiosis
34. 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
tonoplast
post-transcriptional processing
organelles
endoplasmic reticulum
35. Numerous folds in the inner membrane of a mitochondrion - the site of cellular respiration
stroma
cristae
meiosis
electron transport
36. A cell having only one complete set of chromosomes
carbon dioxide fixation
haploid
metabolism
cristae
37. Bead-like structure in chromatin - composed of a short length of DNA wrapped around a core of histone proteins
carbon dioxide fixation
mutation
nucleosome
DNA
38. The male reproductive organ of a flower consisting of anther - filament - and pollen
stamen
transcription
vascular plants
chromatin
39. The stalk of a stamen that supports the anther
filament
prosthetic group
gymnosperms
stigma
40. Part of stem where growth occurs - contains meristem tissue that is capable of quick growth
shoot apex
perennial
alleles
enzymes
41. First step in releasing the energy of glucose - in which a molecule of glucose is broken into two molecules of pyruvic acid
nucleosome
ATP
glycolysis
translation
42. Set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes
anther
chromatin
metabolism
annuals
43. Double-stranded chains of proteins which give structure to the cell
microfilaments
mutation
vacuole
glycolysis
44. Have tissues made of cells that transport water and nutrients throughout the plant
perennial
vascular plants
microvilli
electron microscope
45. Used to examine tiny cell organelles
cell wall
cofactor
transcription
electron microscope
46. Strong layer around the cell membrane in plants - algae - and some bacteria made of cellulose and lignin
cell wall
vascular plants
microfilaments
mutation
47. Proteins that act as biological catalysts
inhibitor
stroma
enzymes
substrate
48. Photosynthetic reaction in which carbon dioxide is attached to an organic compound (glucose - polysaccharides)
carbon dioxide fixation
anabolism
virus
genome
49. The part of the stamen that contains pollen
cofactor
metabolism
anther
anaphase
50. The stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle
pedicel
stigma
secretory vesicles
anaphase