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Mike's Praxis II Biology Content (5235) |Questions Solved 100% Correct Answers| Already Passed
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Mike's Praxis II Biology Content (5235)|Questions Solved 100% Correct
Answers| Already Passed
Greenhouse gases: - ANSWER Carbon dioxide, methane, nitrous oxide, fluorinated gases
Greenhouse effect occurs when: - ANSWER Greenhouse gases allow heat energy from the sun
to pass through the earths atmosphere as visible light, but prevent it from being reflected
back into space as infrared radiation
Four main classes of organic compounds: - ANSWER Carbohydrates, proteins, lipids, and nuclei
acids
This is the most common organic compound in living things: - ANSWER Carbohydrates
Three examples of carbohydrates: - ANSWER Sugars, starches, and cellulose
Two functions of carbohydrates: - ANSWER Glucose --> energy
Cellulose --> provides structure/ support in plant cells (cell wall)
7 different protein functions: - ANSWER -Connection (collagen)
-movement (actin myosin)
-Communication (markers)
-Regulation (hormones)
-Immune defense (Ab)
,-Enzymes
-Transport materials (channel proteins)
Four examples of lipids:
Lipid structure: - ANSWER Fats, oils, waxes, steroids
Glycerol attached to a fatty acid
Extinction is the death of all individuals within a _________ - ANSWER Species
A species is a group of: - ANSWER Organisms that can produce viable offspring
Saturated Fatty acids have:
Unsaturated fatty acids have: - ANSWER Carbons all single bonded to each other
(saturated with hydrogen a)
Carbons (some) are double bonded causing kinks and bends
In eukaryotic cells, RNA polymerase cannot bind to a gene initiate transcription until: - ANSWER
Transcription factors have first bound to the gene's regulatory sequences; after this RNA
polymerase associates with transcription factors
Transpiration in plants occurs through this structure: - ANSWER Stomata
Two equations for Hardy Weinberg: - ANSWER p + q = 1
, P^2 + 2pq + q^2 = 1
Aluminum cans should be recycled because: - ANSWER Processing of aluminum ore (refined
from bauxite) requires a tremendous amount of energy; this process also releases a lot of CO2
into the atmosphere. Recycling aluminum cans saves energy and reduces CO2 emissions
Concerning map units on a gene, higher crossover frequency between two genes means
they are: - ANSWER Further apart from each other on the chromosome
For ecological succession to occur in a given area, the organisms living there at a given time
must: - ANSWER Alter the environment; organic matter increases in the soil = allows
environment to support larger more diverse group of organisms
Huntington's disease is caused by: - ANSWER Excessive number of repeats of the codon CAG in
the HTT gene; autosomal dominant inheritance
Biological magnification refers to: - ANSWER The increase in concentration of a substance as it
moves up the food chain
Best definition of a buffer: - ANSWER Resists change in H+ and OH- ions in a solution by
combining with any such excess ions
The different between plants and fungi is that plants are: - ANSWER Autotrophic; fungi
absorb nutrients from their surroundings
On earth, these are three major reservoirs of carbon cycling: - ANSWER Limestone, oceans,
and sediments of aquatic ecosystems
These two organelles can synthesize their own constituent proteins: - ANSWER Mitochondria
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