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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. Have tissues made of cells that transport water and nutrients throughout the plant
vascular plants
telophase
transformation
ribosomes
2. Used to examine tiny cell organelles
electron microscope
telophase
electron transport
nucleolus
3. A substance that must join with the enzyme to enable it to fit the substrate
biosynthesis
cofactor
centrioles
pedicel
4. Stage of cellular respiration that finishes the breakdown of pyruvic acid molecules to carbon dioxide - releasing energy
microtubules
cristae
anther
krebs cycle
5. The male reproductive organ of a flower consisting of anther - filament - and pollen
eukoryotic cells
stamen
mitosis
reduction
6. Hollow tubes of protein about 25 nanometers in diameter - support the cell and moves organelles within the cell
microtubules
transcription
reduction
pistil
7. A cell having two sets of chromosomes or twice the haploid number
diploid
stamen
cell cycle
glycolysis
8. Two identical chromosomes that split and contain the same genetic material
chromatids
inhibitor
DNA
microvilli
9. (adenosine triphosphate) main energy source that cells use for most of their work
anaphase
cell
ATP
microvilli
10. Process by which a cell releases large amounts of material
organism
pedicel
exocytosis
electron microscope
11. Classification of plant which survives only a single season
meiosis
prokaryotes
metabolism
annuals
12. Pores which allows materials to move in and out of the cell nucleus
nuclear pores
annuals
endocytic vesicles
active transport
13. Smallest unit of most living things
nuclear pores
ATP
cell
shoot apex
14. Small structures in the cytoplasm of a cell that do special jobs
active transport
homologs
cristae
organelles
15. The interchange of sections between pairing homologous chromosomes during the prophase of meiosis
crossing over
cell
genome
catabolism
16. Classification of plant which forms seeds inside a protective chamber called an ovary - inside a flower
cristae
ATP
angiosperms
pistil
17. Stalk that supports the flower
tonoplast
chromatin
pedicel
centrioles
18. The substance acted upon by an enzyme
lysosomes
substrate
electron transport
ribosomes
19. Has a nucleus - has organelles or other cell parts
eukoryotic cells
exocytosis
stroma
anabolism
20. The stalk of a stamen that supports the anther
diploid
anther
prophase
filament
21. The female part of a flower composed of ovary and style and stigma and ovules
pistil
anabolism
fermentation
mitosis
22. Plants that grow year after year
perennial
electron microscope
shoot apex
ovary
23. The process of transfering genetic material from one cell to another
transduction
electron transport
mitosis
cristae
24. Anaerobic cellular respiration in which pyruvic acid is broken down into end products such as lactic acid
translation
endoplasmic reticulum
fermentation
stigma
25. The part of the stamen that contains pollen
virus
anther
nucleosome
mitosis
26. Consists of DNA tightly coiled around proteins
secretory vesicles
chromatids
chromatin
ovules
27. Reducing the ploidy level of nucleus from diploid to haploid in meiotic cell division
organism
telophase
reduction
microtubules
28. Change in a DNA sequence that affects genetic information
substrate
post-transcriptional processing
mutation
glycolysis
29. Powerhouse of the cell - organelle that is the site of ATP (energy) production
nuclear pores
mitochondria
active transport
organelles
30. A long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix
perennial
mutation
DNA
transduction
31. Small - dense region within most nuclei in which the assembly of RNA proteins begins
mitochondria
prosthetic group
tonoplast
nucleolus
32. Photosynthetic reaction in which carbon dioxide is attached to an organic compound (glucose - polysaccharides)
DNA
carbon dioxide fixation
photolysis
nucleosome
33. Matching Chromosomes that are similar but not identical
homologs
reduction
anther
exocytosis
34. Modification of a cell by the incorporation of exogenous DNA
chromatids
metaphase
vacuole
transformation
35. Set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes
metabolism
biennial
haploid
diploid
36. First step in releasing the energy of glucose - in which a molecule of glucose is broken into two molecules of pyruvic acid
cell wall
diploid
glycolysis
anaphase
37. The regular sequence of growth and division that cells undergo
haploid
electron transport
ovary
cell cycle
38. Strong layer around the cell membrane in plants - algae - and some bacteria made of cellulose and lignin
carbon dioxide fixation
meiosis
photolysis
cell wall
39. Bead-like structure in chromatin - composed of a short length of DNA wrapped around a core of histone proteins
cofactor
telophase
transcription
nucleosome
40. Part of stem where growth occurs - contains meristem tissue that is capable of quick growth
microtubules
vacuole
shoot apex
pedicel
41. Cells that lack a membrane-bound nucleus and membrane-bound organelles
post-transcriptional processing
pistil
annuals
prokaryotes
42. The first stage of mitosis - forming spindle fibres attached to the centromere
fermentation
stroma
facilitated diffusion
prophase
43. Reproductive cells - have only half the number of chromosomes
ovules
stroma
endocytic vesicles
gametes
44. Disk-like plates which are the site of photosynthesis in chloroplasts
biennial
enzymes
grana
nuclear pores
45. Numerous folds in the inner membrane of a mitochondrion - the site of cellular respiration
stroma
transduction
cristae
anaphase
46. Proteins that act as biological catalysts
mitochondria
eukoryotic cells
enzymes
translation
47. In photosynthesis - this is the splitting of water by light
centromere
endocytic vesicles
photolysis
ribosomes
48. Area where the chromatids of a chromosome are attached
electron transport
metabolism
DNA
centromere
49. Transport of a substance across a cell membrane against the concentration gradient
active transport
centromere
centrioles
endosymbiont hypothesis
50. The part of an enzyme where the chemical reaction occurs
ATP
active site
metaphase
prosthetic group