SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
Test your basic knowledge |
MCAT Biology 3
Start Test
Study First
Subjects
:
mcat
,
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. Most common atoms found in biological molecules
Bacteria
Phosphdiester bond
C - H - O - N - S
Nucleolus
2. Two simple sugars joined together
Transport disaccharides (reasoning)
Disaccharide
Beta barrel
Glycoproteins
3. Term for the beta - alpha - beta motif that is found at the core of nuceotide binding sites
Hydrocarbons
Rossman fold
Motifs
Integrins
4. 5 carbon sugar (ribose or deoxyribose) bound to a phosphate and a nitrogenous base
Cadherin
Special function amino acids
ATP (composition)
Nucleotide (composition)
5. Glycerol attached to 3 fatty acids. Also called triglyceride or triacylglycerol
Motifs
Dynein
Fat (composition)
Intermediate filaments
6. 5- carbon sugar - adenine - and a tri - phosphate group
Extreme thermophiles
Anchoring junction
ATP (composition)
Chitin
7. Cysteine - Methionine - Proline
Special function amino acids
Joule <--> Calorie (conversion)
DNA (location)
Prokaryote
8. Methane - producing archaebacteria - one of the most primitive archaebacteria that are alive today
Carbohydrates (empirical formula)
Methanogens
Middle lamella
Plasmodesmata
9. 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
Special function amino acids
Fat (characteristics)
Kinesin
Transport disaccharides (reasoning)
10. The manner in which all macromolecules are assembled -- water is a product of the reaction
Dehydration synthesis
Spectrin
First law of thermodynamics
Central vacuole
11. A three carbon alcohol in which each carbon is attached to a hydroxyl group
Special function amino acids
Rossman fold
Glycerol
First law of thermodynamics
12. The bond between the hydroxyl group of one nucleotide and the phosphate group of another.
Phosphdiester bond
Cenriole
Amino acid (composition)
Microtubules
13. Laid down when a plant cell is still growing; composed of chitin in fungi and cellulose in plants and protists
Beta barrel
Primary cell wall
Cellulose
Steriod
14. Simple sugars are turned into disaccharides so they can be transported without being metabolized (typically in plants). The enzymes that can break the bond and utilize the sugar are typically present only where the glucose is to be used.
Secondary level of protein structure
Beta glucose ring
Transport disaccharides (reasoning)
Hydrocarbons
15. Eukaryotic cell's internal protein scaffold which provides structural support and is extremely important for organizing the cell's activites; a dynamic system that is constantly forming and disassembling
Major categories of macromolecules
Rossman fold
Penicillin (mechanism of action)
Cytoskeleton
16. Protein that plays a major role in vesicle formation during receptor mediated endocytosis; forms a coated pit on the plasma membrane
Bacteria
Nucleotide (composition)
DNA (location)
Clathrin
17. Large - membrane bound sac in plant cells that stores proteins - pigments - and waste material
Chaperone proteins
Central vacuole
Tertiaty level of protein structure
Chromosome
18. A lipid that is composed of 4 fused carbon rings - commonly found in cell membranes.
Archaebacteria
Purines (identify)
5 classes of amino acids
Steriod
19. Ancient prokaryotes that survive in extreme anaerobic conditions - such as deap sea vents; they lack peptidoglycan in their cell walls
5 classes of amino acids
Cytoplasm
Archaebacteria
Collagen
20. Manner in which macromolecules are broken down -- water is separated into H and OH
Primary level of protein structure
Keratin
Hydrolysis
Glycerol
21. A cluster in the nucleus of ribosomal RNA genes - ribosomal proteins - and the RNAs they produce: it is the site of mass ribosome production
First law of thermodynamics
DNA (location)
Glycosidic bond
Nucleolus
22. A modified form of cellulose with a nitrogen group added to the glucose units; structural building material found in arthropods and cell walls of many fungi.
Bacteriorhodopsin
ATP (composition)
Chitin
Pinocytosis
23. Responsible for cellular movments like contraction - crawling - pinching during division or cytosis - and formation of cellular extensions
Special function amino acids
Fat (composition)
Cyanobacteria
Actin (functions in cytoskeleton)
24. Adenine --- Thymine (DNA) - Adenine --- Uracil (RNA) - Guanine --- Cytosine
Complimentary bases
Plastids
Miller - Urey experiment
Dynein
25. A type of intermediate filament found in epithelial cells
ATP (composition)
Tertiaty level of protein structure
Chromosome
Keratin
26. 1 joule = 0.239 calories
Steriod
Prostaglandin
Extreme halophiles
Joule <--> Calorie (conversion)
27. A glucose ring formed with the hydroxyl group in the opposite plane of the methanol group
Nucleolus
Kinesin
Central vacuole
Alpha glucose ring
28. 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
Domains
Nonpolar amino acids
Primary cell wall
29. A cellular structure that aids in the assembly of microtubules; lacking in cells of plants and fungi
Chaperone proteins
Cenriole
Glycosidic bond
Transport disaccharides (reasoning)
30. Phenyalanine - Tryptophan - Tyrosine
Primary level of protein structure
Tertiaty level of protein structure
Aromatic amino acids
Clathrin
31. Glycine - Serine - Threonine - Asparagine - Glutamine
Polar uncharged amino acids
Dehydration synthesis
Quaternary level of protein structure
Phosphdiester bond
32. Responsible for moving organelles within a cell - also facilitate cell movement
Microtubules
Nucleotide (composition)
Secondary cell wall
Chromosome
33. A structure that some fully expanded plant cells produce; provides very strong structural support
Tight junctions
Complimentary bases
Cytoskeleton
Secondary cell wall
34. Alanine - Valine - Leucine - Isoleucine
Glycolipids
Actin (functions in cytoskeleton)
Nonpolar amino acids
Aromatic amino acids
35. The most stable and durable element of cytoskeletal structure; includes vimentin - keratin - and neurofilaments
Dehydration synthesis
Intermediate filaments
Chaperone proteins
Fibronectin
36. The unfolding of a protein caused by a shift in pH - ion concentration - or temperature.
Cytoplasm
Steriod
Hypercholesterolemia
Denaturation
37. Level of protein structure that involves the association of two more more separate polypeptide chains (the individual chains are referred to as subunits)
Cytoskeleton
Chromosome
Quaternary level of protein structure
Desmosomes
38. Insoluble polysaccharides made by plants that are formed stricly from glucose (alpha form).
Nucleotide (composition)
Intermediate filaments
Starch
Anchoring junction
39. (CH2O)n - n = number of carbon atoms
Integrins
ATP (composition)
Flagellum
Carbohydrates (empirical formula)
40. A glucose ring formed with the hydroxyl group in the same plane as the methanol group
Chromosome
Middle lamella
DNA (location)
Beta glucose ring
41. Archaebacteria that live in extermely hot environments - such as hydrothermal vents under the ocean
Extreme thermophiles
Collagen
Beta glucose ring
Hydrocarbons
42. A common feature of porin proteins; beta sheets that forma characteristic motif where the sheets form a barrel - like structure
Secondary cell wall
Nonpolar amino acids
Steriod
Beta barrel
43. Glutamic acid - Aspartic acid - Histidine - Lysine - Argenine
Phosphdiester bond
Centrosome
Extreme halophiles
Charged amino acids
44. Composed of connexons; creates a channel that connects the cytoplasm of two cells
Archaebacteria
Joule <--> Calorie (conversion)
Gap junction
Rossman fold
45. A network of integrins that connects the actin filaments of one cell with those of neighboring cells or with the extra cellular matrix
Alpha glucose ring
Major categories of macromolecules
Desmosomes
Adherins junctions
46. The bond between two amino acids. Non - rotational because it has partial double - bond characteristics
Centrosome
Clathrin
Monosaccharide
Peptide bond
47. In prokaryotes - most of the genetic material lies in a single circular molecule of DNA that typically resides near the cetner of the cell. In eukaryotes - DNA is contained in the nucleus - which is surrounded by the nuclear envelope.
Dehydration synthesis
Anchoring junction
DNA (location)
Charged amino acids
48. A special motor protein that moves along the microtubule toward the negative end; responsible for rentrograde axoplasmic transport
Dynein
Intermediate filaments
Amylopectin
Pinocytosis
49. 7 pass transmembrane protein in bacteria that carries out photosynthesis
Bacteriorhodopsin
Central vacuole
Motifs
Prostaglandin
50. Large (relative to pyrimidines) double ringed molecules that are found in both DNA and RNA
Nucleotide (composition)
Tertiaty level of protein structure
Purines (characteristics)
Extreme thermophiles