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Test your basic knowledge |
MCAT Biology 3
Start Test
Study First
Subjects
:
mcat
,
science
Instructions:
Answer 50 questions in 15 minutes.
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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. A type of intermediate filament found in epithelial cells
Gram positive bacteria
Fat (composition)
Keratin
Fibronectin
2. Not soluble in water - the more unsaturated the lower the MP - energy rich (more than twice that of carbohydrates) - animals produce saturated while most plants produce unsaturated
Primary cell wall
Fat (characteristics)
Middle lamella
Glycosidic bond
3. Small single - celled organisms that lack a definite nucleus and distinct interior compartments; they are encased within a rigid cell wall. Two main groups are archaebactera and bacteria
Adherins junctions
Nonpolar amino acids
Antiport
Prokaryote
4. A special motor protein that moves along the microtubule toward the negative end; responsible for rentrograde axoplasmic transport
Chitin
Dynein
Chromosome
ATP (composition)
5. The exact sequence of amino acids specified by DNA
Primary level of protein structure
Cenriole
Fibronectin
Anchoring junction
6. Alanine - Valine - Leucine - Isoleucine
Nonpolar amino acids
Beta glucose ring
Glycolipids
Gap junction
7. They connect the plasma membranes of adjacent cells in a sheet - preventing molecules from leaking between the cells.
Tight junctions
Tertiaty level of protein structure
Purines (characteristics)
Fatty acid
8. A glucose ring formed with the hydroxyl group in the same plane as the methanol group
Plasmodesmata
Charged amino acids
Nucleolus
Beta glucose ring
9. Responsible for moving organelles within a cell - also facilitate cell movement
Central vacuole
Nucleolus
Middle lamella
Microtubules
10. Adenine and Guanine
Purines (identify)
Gap junction
Carbohydrates (empirical formula)
Beta glucose ring
11. 5 carbon sugar (ribose or deoxyribose) bound to a phosphate and a nitrogenous base
Peptidoglycan
First law of thermodynamics
Fibronectin
Nucleotide (composition)
12. Glycine - Serine - Threonine - Asparagine - Glutamine
Polar uncharged amino acids
Peptide bond
Tertiaty level of protein structure
5 classes of amino acids
13. Simplest starch which is a long unbranching chain of glucose molecules
Plasmodesmata
Penicillin (mechanism of action)
Amylose
Chaperone proteins
14. Glycoproteins that forms a complex web that forms a protective layer of the surface of animal cells
Glycerol
Proteoglycans
First law of thermodynamics
xtrusion
15. Cholesterol receptors lack tails and cannot be taken up by cells; stays in the bloodstream and coats arteries
Spectrin
Polar uncharged amino acids
Hypercholesterolemia
Hydrolysis
16. Responsible for cellular movments like contraction - crawling - pinching during division or cytosis - and formation of cellular extensions
Nonpolar amino acids
Actin (functions in cytoskeleton)
Primary level of protein structure
Purines (characteristics)
17. A three carbon alcohol in which each carbon is attached to a hydroxyl group
Glycerol
Beta glucose ring
Hypercholesterolemia
Joule <--> Calorie (conversion)
18. A cellular structure that aids in the assembly of microtubules; lacking in cells of plants and fungi
Proteoglycans
Nucleotide (composition)
Bacteriorhodopsin
Cenriole
19. A semi - fluid matrix that fills the interior of the cell
Keratin
Archaebacteria
Cytoplasm
Extreme thermophiles
20. Level of protein structure that is formed by the hydrogen bonds between the polar side groups of the main chain
Secondary level of protein structure
C - H - O - N - S
Nucleolus
Centrosome
21. Level of protein structure that involves the association of two more more separate polypeptide chains (the individual chains are referred to as subunits)
Fatty acid
Quaternary level of protein structure
C - H - O - N - S
Polar uncharged amino acids
22. The final folded shape of a globular protein -- positions folds nonpolar side groups within the interior
Tertiaty level of protein structure
Primary level of protein structure
Complimentary bases
Carbohydrates (empirical formula)
23. Most common atoms found in biological molecules
C - H - O - N - S
Hydrocarbons
Rossman fold
Methanogens
24. Nonpolar - polar uncharged - charged - aromatic (nonpolar and polar uncharged) - special function
Extreme halophiles
5 classes of amino acids
Cenriole
Microtubules
25. Long - threadlike structures protruding from the surface of a cell that are used for locomotion
Bacteriorhodopsin
Functions or proteins
Plastids
Flagellum
26. Biological process in which a some single celled prokaryotes collect intracellular water with a contractile vacuole and then pump it out
Desmosomes
xtrusion
Extreme thermophiles
Chromosome
27. Energy cannot be created or destroyed
Nucleotide (composition)
Amylose
Amino acid (composition)
First law of thermodynamics
28. A form of endocytosis where an animal cell engulfs liquid matter
Actin (functions in cytoskeleton)
Penicillin (mechanism of action)
C - H - O - N - S
Pinocytosis
29. Transmembrane proteins that play an important role in cell - cell adhesion; their function is dependent upon calcium; vertebrate migration of neurons is affected by which type of this protein is expressed on the cell's plasma membrane
Cadherin
Primary level of protein structure
Actin (functions in cytoskeleton)
Chromosome
30. Consist of a central carbon bound to an amino group - a carboxylic acid - a hydrogen atom - and an R group
Pyrimidines (identify)
Central vacuole
Motifs
Amino acid (composition)
31. The manner in which all macromolecules are assembled -- water is a product of the reaction
Monosaccharide
Archaebacteria
Cyanobacteria
Dehydration synthesis
32. Energy rich molecules that consist only of carbon and hydrogen
Intermediate filaments
Charged amino acids
Dynein
Hydrocarbons
33. Glutamic acid - Aspartic acid - Histidine - Lysine - Argenine
5 classes of amino acids
Monosaccharide
Charged amino acids
Hydrocarbons
34. A short - branched polysaccharide with short - linear amylose branches that are typically 20-30 subunits
Domains
Fat (composition)
Desmosomes
Amylopectin
35. Large (relative to pyrimidines) double ringed molecules that are found in both DNA and RNA
Purines (characteristics)
Archaebacteria
Beta glucose ring
Rossman fold
36. The animal version of starch. An insoluble polysaccharide containing branched amylose chaings. (chain length is much greater than starch and there are more branches)
Secondary level of protein structure
Glycogen
Prostaglandin
First law of thermodynamics
37. Phenyalanine - Tryptophan - Tyrosine
Microtubules
Fibronectin
Penicillin (mechanism of action)
Aromatic amino acids
38. (CH2O)n - n = number of carbon atoms
Hydrocarbons
Glycoproteins
Gap junction
Carbohydrates (empirical formula)
39. In eukaryotes - found extracellularly and involved with tissue recognition - eg ABO blood group markers
Glycolipids
Charged amino acids
Carbohydrates (empirical formula)
Dehydration synthesis
40. The bond between two amino acids. Non - rotational because it has partial double - bond characteristics
Peptide bond
Tertiaty level of protein structure
Phosphdiester bond
Cytoskeleton
41. Proteins that are anchored in and pass through the plasma membrane; attached to the cytoskeleton on the interior and to the ECM on the exterior
Integrins
Polar uncharged amino acids
C - H - O - N - S
Peptidoglycan
42. A type of anchoring junction that connects the cytoskeletons of adjacent cells
Peptide bond
Nucleotide (composition)
Pyrimidines (characteristics)
Desmosomes
43. Two simple sugars joined together
Prostaglandin
Beta barrel
Disaccharide
Cytoskeleton
44. A structure that some fully expanded plant cells produce; provides very strong structural support
Secondary cell wall
Rossman fold
Glycosidic bond
Pinocytosis
45. The DNA found in cells which transmits hereditary information from one generation to the next; in prokaryotes it is a single naked circle of DNA; in eukaryotes it is a single strand of DNA complexed with protein
Chromosome
Actin - microtubules - intermediate filaments
DNA (location)
Prostaglandin
46. A glucose ring formed with the hydroxyl group in the opposite plane of the methanol group
Actin (functions in cytoskeleton)
Spectrin
Alpha glucose ring
Major categories of macromolecules
47. 1 joule = 0.239 calories
Joule <--> Calorie (conversion)
Cenriole
Alpha glucose ring
Gap junction
48. Large - membrane bound sac in plant cells that stores proteins - pigments - and waste material
Domains
Steriod
Cenriole
Central vacuole
49. A carrier protein that simultaneously moves one molecule in as it moves another out
Pyrimidines (characteristics)
Peptidoglycan
Bacteria
Antiport
50. A lipid that is composed of 4 fused carbon rings - commonly found in cell membranes.
Cellulose
Adherins junctions
Steriod
Dehydration synthesis
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