PRAXIS: General Science Content Knowledge 5435 Exam | Questions And Answers Latest
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Diaphragm - Part of the compound microscope used to regulate the amount of light being transmitted
through the specimen on the slide.
1 milligram - 1 x 10 -3 grams
Kepler - His greatest contribution to science was that he described the orbits of the planets as ellipses.
Newton - Used the 3 laws of planetary motion to establish universal gravitation.
Mendel's Law of Independent assortment - In a dihybrid cross, alleles for different traits separate and
are inherited independently of each other, resulting in a phenotype of 9:3:3:1. Which of Mendel's laws
does this illustrate?
Seven (7) is a neutral pH value. The pH scale goes from one (1) to 14. A value of one (1) is extremely
acidic, and a value of 14 is extremely basic. - The pH of distilled water should have what value?
Uniformitarianism - States that the same processes that operate today have operated over long periods
with steady incremental change to shape the geology of our planet. Plate tectonics is an example of one
of those processes.
This theory states that changes in the earth's crust during geological history have resulted from the
action of continuous and uniform processes.
Metabolic Rate - In endotherms, this can change based on age, sex, size, activity level, time of day,
among other factors. Most terrestrial animals have a ______ that is 2 to 4 times their body mass index.
catalyst - Adding a _______ to a reaction in equilibrium does not disturb the equilibrium point.
catalyst - A ________ speeds up the rate at which a reaction reaches dynamic equilibrium and is added
to a reaction primarily as a way to increase reaction rate. No changes in the products will occur.
,catalyst, pressure - A reaction A(g) + B(g) → 2C(g) is in equilibrium at a certain temperature. The amount
of products cannot be increased by adding a _______ or by increasing ______.
B. - A(s) + B(g) → C(aq) + heat
For this reaction all of the following will affect the quantities of reactants and products at equilibrium in
a closed vessel EXCEPT:
A. an increase in the volume of reaction vessel
B. addition of a catalyst
C. increase in pressure
D. increase in temperature
negative, because heat is leaving the system - Is heat evolved a negative or positive number?
q (heat evolved) - m (mass) x S (specific heat of water) x ΔT (rise in temp)=
velocity - s/t (displacement /time)
zero - If a body goes from A to B and returns from B to A, the total displacement is ______. Hence, the
average velocity is 0 km/h.
Disconformity - The surface division between parallel rock strata, indicating interruption of
sedimentation.
Liver - Responsible for detoxification, plasma protein synthesis, and the decomposition of red blood
cells.
Esophagus, peristalsis - The walls of the ________ are composed of muscles, which move in wave-like
contractions to push food into the stomach. These wave-like contractions are called ________.
,Small Intestine - Its job is to absorb most of the nutrients from what we eat and drink. Velvety tissue
lines the ________, which is divided into the duodenum, jejunum, and ileum.
Dewpoint - The amount of moisture of the air. The _____ has to cool at a stable pressure in order to
saturate.
Acid - A compound in which one or more H+ ions are bonded to a negative ion
Permeation Rate - Rate at which the test chemical passes through the glove material once breakthrough
has occurred and equilibrium is reached. _______ involves absorption of the chemical on the surface of
the glove, diffusion through the glove, and desorption of the chemical on the inside of the glove.
Bronsten-Lowry Acid and Base - this type of acid is any species capable of donating a proton; and this
base is any species capable of accepting a proton.
Basaltic - ________ magma has very low viscosity. It flows freely because it has low silica content.
Arrhenius - these types of acid-base reactions are characterized by acids, which dissociate in aqueous
solution to form hydrogen ions (H+) and bases, which form hydroxide (OH−) ions.
Andesitic - _________ magma is found in oceanic crust and sediment. It is 50 - 60 % silica, so it has
intermediate viscosity.
Feldspar - Magma often contains _______ ; the amount of it doesn't affect the viscosity as much as the
silica content does.
rhyolitic magma - This type of magma has the same composition as granite - more than 60% silica. It
occurs when molten material rises and mixes with the continental crust above it which would be rich in
silica and water. Because of its high viscosity, eruptions can be explosive.
∂ρ/∂t+ ∇•(ρu)=0 - What is the differential form of the continuity equation? Assume ρ is fluid density, t is
time, and u is fluid velocity.
, Continuity Equation - A mathematical statement that, in any steady state process, the rate at which
mass enters a system is equal to the rate at which mass leaves the system. Area x velocity = constant.
Flow Rate - Area (a) x Velocity (v)=
facilitated diffusion - Cell membranes can block the path of hydrophilic things like ions and charged
molecules, so they need to go through channels, similar to the doors in the theater. Once the channel
(or door) is open, the ions just flow through by themselves with no extra help in the form of pumping
action. This channel-opening process is called ____________ because ions and charged molecules need
to be helped across the membrane by channels.
Rate of diffusion - Since ions and charged molecules need to go through channels, their ____________
can only get so high.
The primary structure - The sequence of amino acids in proteins
The secondary structure - The local folding and coiling of a protein
The tertiary structure - The overall 3-D shape of a protein
The expression for the magnitude of the magnetic field - μ0I/2πr μ=4π x 10-7
metallic - The presence of ________ bonding accounts for strength, malleability, thermal and electrical
conductivity, ductility, luster and opacity.
magnetism - Arises as a result of the orbital angular motion of the electrons in certain metals.
Bone - A mineralized connective tissue that is formed by osteoblasts. The osteoblasts deposit a matrix of
collagen, calcium, magnesium, and phosphate ions.
Equation for the ideal gas law - PV=nRT, where P=absolute pressure, V=absolute volume, T=absolute
temperature, R is the universal gas constant (8.3145J/mol Kelvin), n=number of moles
