Physics
The work done by a friction force is:
Always Negative
Each of the following is a cell organelle except one. Which one of these is NOT a cell organelle?
a) mitochondrion
b) lysosome
c) cytoplasm
d) endoplasmic reticulum
C -- CYTOPLASM
Name the person who developed a table of elements which revealed regularities in elemental properties in 1869?
DMITRI MENDELEEV
What is the volume of a sphere of radius "r"?
(4/3)πr³
Which of the following is NOT an aliphatic hydrocarbon?
w) n-octane
x) propylene
y) n-tridecane
z) benzene
z) benzene
Iron is what type of magnetic material?
Ferromagnetic
The alternative forms of gene at the same locus on homologous chromosomes are called what?
Alleles
What is the maximum number of electrons that can occupy an s orbital?
Two
Give the equation of one of the circles which satisfy the following criteria: a circle with a radius of 8 which is tangent to the y-axis and whose center lies on the x-axis
(x - 8)^2 + (y)^2 = 64 or (x + 8)^2 + (y)^2 = 64
One-celled algae enclosed in minute two-part silic shells are called:
a) dinoflagellates
b) coelenterates
c) annelids
d) diatoms
d) diatoms
A pendulum which is suspended from the ceiling of a railroad car is observed to hang at an angle of 10 degrees to the right of vertical. Which of the following answers could explain this phenomena?
w) The railroad car is at rest.
x) The railroad car is accelerating to the left.
y) The railroad car is moving with constant velocity to the right.
z) The railroad car is accelerating to the right.
X) The railroad car is accelerating to the left
The myofilaments of muscles consist primarily of two proteins. These two proteins are called: ____
ACTIN AND MYOSIN
Which of the following terms refers to the number of molecules or ions attached to a central metallic atom?
w) coordination number
x) connection number
y) bonding number
z) none of these
w) coordination number
In what number base does 1 + 2 = 10?
Base 3
Let y = f(x) be the solution to the differential equation dy/dx = x-y with initial condition f(1) = 3. What is the approximation for f(2) obtained by using Euler's method with 2 steps of equal length starting at x = 1?
a. -5/4
b. 1
c. 7/4
d. 2
C. 7/4
A circuit consists of a resistor, capacitor, and inductor connected in series to an AC source. As the source frequency increases, the current in the circuit decreases. Which statement about the circuit is NOT correct as the source frequency increases?
(A) The impedance of the circuit increases.
(B) The circuit is said to become more capacitive than inductive.
(C) The phase angle for the circuit becomes more positive.
(D) The inductive reactance increases.
(B) The circuit is said to become more capacitive than inductive.
Which of the following are skin receptors in humans that are sensitive to heat?
a) end organs of Krause
b) Meissner's corpuscles
c) end organs of Ruffini
d) Pacinian corpuscles
c) end organs of Ruffini
When an aldehyde is heated with Fehling's solution, what process does the aldehyde undergo?
Oxidation
: The polar equation, r = 3 - 2cos(t), represents which of the following graphs?
w) cardioid
x) three-leaved rose
y) Archimedian-spiral
z) limacon
z) limacon
For an infinite sheet of positive charge, the electric field lines:
w) run parallel to the sheet of charge
x) are perpendicular to the sheet of charge and point in toward the sheet
y) are perpendicular to the sheet of charge and point away from the sheet
z) fall off as one over r squared
y) are perpendicular to the sheet of charge and point away from the sheet