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Test your basic knowledge |
CLEP Natural Science
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Subjects
:
clep
,
science
Instructions:
Answer 50 questions in 15 minutes.
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.
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 long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix
active transport
vacuole
stroma
DNA
2. Have tissues made of cells that transport water and nutrients throughout the plant
reduction
mitochondria
vascular plants
centromere
3. 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
vascular plants
prokaryotes
endoplasmic reticulum
meiosis
4. The final stage of mitosis or meiosis - during which a nuclear membrane forms around each set of new chromosomes
gametes
cofactor
telophase
mitochondria
5. First step in releasing the energy of glucose - in which a molecule of glucose is broken into two molecules of pyruvic acid
angiosperms
transformation
glycolysis
gene
6. Anaerobic cellular respiration in which pyruvic acid is broken down into end products such as lactic acid
mutation
transcription
catabolism
fermentation
7. Has a nucleus - has organelles or other cell parts
gymnosperms
shoot apex
eukoryotic cells
organelles
8. Green pigment contained in the grana
meiosis
chlorophyll
cytokinesis
photolysis
9. Vacuole membrane
nucleolus
tonoplast
meiosis
angiosperms
10. Theory which suggests mitochondria and chloroplasts were once prokaryotic organisms in a symbiotic relationship with eykorytic cells
pedicel
fermentation
endosymbiont hypothesis
facilitated diffusion
11. Process of building up complex materials (proteins) from simple materials
transcription
anabolism
cell membrane
microtubules
12. Projections on cell membrane increase surface area
lysosomes
tonoplast
homologs
microvilli
13. A cell having only one complete set of chromosomes
fermentation
haploid
endocytic vesicles
eukoryotic cells
14. Change in a DNA sequence that affects genetic information
photolysis
mutation
translation
gametes
15. The complete genetic material contained in an individual
prosthetic group
vacuole
genome
annuals
16. 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
enzymes
photolysis
microtubules
17. Proteins that act as biological catalysts
endocytic vesicles
cell cycle
enzymes
electron microscope
18. Membrane-bound organelle that stores water and soluble substances
mutation
tonoplast
cytokinesis
vacuole
19. A substance that retards or stops enzymatic activity
translation
inhibitor
active transport
prosthetic group
20. The second phase of mitosis - during which the chromosomes line up across the center of the cell
microfilaments
ovules
endocytic vesicles
metaphase
21. (adenosine triphosphate) main energy source that cells use for most of their work
ATP
nucleolus
active site
biosynthesis
22. Consists of DNA tightly coiled around proteins
reduction
golgi apparatus
fermentation
chromatin
23. Smallest unit of most living things
stigma
cell
microvilli
fermentation
24. Classication of plant which produce seeds which are 'naked' (in cones)
stamen
mitosis
DNA
gymnosperms
25. Provides structural support to a cell composed of microtubules - microfilaments - centrioles
cytoskeleton
centrioles
vascular plants
carbon dioxide fixation
26. Stalk that supports the flower
gametes
pedicel
inhibitor
ribosomes
27. Powerhouse of the cell - organelle that is the site of ATP (energy) production
active transport
mitochondria
nucleolus
pistil
28. Two identical chromosomes that split and contain the same genetic material
anther
cristae
chromatids
active site
29. Division of the cytoplasm during cell division - new cell is formed
cytokinesis
translation
pistil
facilitated diffusion
30. Reproductive cells - have only half the number of chromosomes
active transport
meiosis
prokaryotes
gametes
31. Cell organelle filled with enyzmes need to break down certain materials in the cells
lysosomes
microvilli
grana
prokaryotes
32. The part of an enzyme where the chemical reaction occurs
angiosperms
cristae
gametes
active site
33. Small - dense region within most nuclei in which the assembly of RNA proteins begins
exocytosis
nucleolus
virus
tonoplast
34. 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
electron transport
secretory vesicles
nucleolus
35. Matching Chromosomes that are similar but not identical
endocytic vesicles
haploid
electron microscope
homologs
36. Numerous folds in the inner membrane of a mitochondrion - the site of cellular respiration
ovary
catabolism
cristae
vacuole
37. Tubes - One of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope; play a role in cell division.
substrate
anaphase
centrioles
stamen
38. Pores which allows materials to move in and out of the cell nucleus
transformation
anabolism
nuclear pores
cofactor
39. Cell division that produces reproductive cells in sexually reproducing organisms
DNA
annuals
meiosis
fermentation
40. The stalk of a stamen that supports the anther
angiosperms
mutation
prophase
filament
41. Site of protein synthesis. Free ribosomes - float unattached; attached ribosomes - attached to the ER
prokaryotes
cell membrane
endoplasmic reticulum
ribosomes
42. Process by which a cell releases large amounts of material
transduction
vascular plants
prokaryotes
exocytosis
43. The male reproductive organ of a flower consisting of anther - filament - and pollen
microtubules
prosthetic group
organelles
stamen
44. The regular sequence of growth and division that cells undergo
cell cycle
telophase
endocytic vesicles
secretory vesicles
45. Classification of plant which forms seeds inside a protective chamber called an ovary - inside a flower
crossing over
anabolism
filament
angiosperms
46. Cell division which produces two identical cells
mitosis
microfilaments
grana
vascular plants
47. Modifications of pre-mRNA that make it into mature mRNA - so that it is ready for protein synthesis
post-transcriptional processing
anabolism
cell cycle
meiosis
48. A cell having two sets of chromosomes or twice the haploid number
diploid
mitochondria
metabolism
translation
49. Body of a chloroplast containing grana
ovary
stroma
microvilli
genome
50. A period during which the cell grows - G1 - copies its DNA - S - and synthesizes proteins - G2
transduction
gymnosperms
interphase
prosthetic group
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