From Practice Tests

Question 0

Distance (from acceleration)

Answer 0

d = (1/2)at^2

Question 1

Power

Answer 1

P = IV

Question 2

Wave Velocity

Answer 2

V = lambda f

Question 3

Focal length - height relationship

Answer 3

d(object)/d(image) = h(object)/h(image)

Question 4

Boyle’s law and exception

Answer 4

P1 V1 = P2 V2

Not true at elevated pressures

Question 5

Normality

Answer 5

number of reactive moles of solute per liter = moles / L

Question 6

Wave energy of a photon

Answer 6

E = hf
C = f lambda
E = hc / lambda 
h = planck's constant

Question 7

Absorption

Answer 7

Absorption = Epsilon (constant) l(path) C(concentration)

Question 8

When a metal is bonded to a non-metal

Answer 8

metal becomes positive

Question 9

Sine wave

Answer 9

y = Y sin(kx - omega T)

Y = amplitude
k = angular wave number = 2pi/wavelength 
omega = angular frequency
x = displacement in direction of wave motion

Question 10

Vasopressin

Answer 10

Anti-diuretic hormone, promotes water reabsorption in the collecting duct of the nephron, released by paraventricular and supraoptic nuclei of the hypothalamus, is a peptide

Question 11

What kind of organ is the spleen?

Answer 11

a lymphoid organ

Question 12

What happens when pH of solution is > than pKa of an acid side chain?

Answer 12

it will lose a proton and become negatively charged

Question 13

What happens when the pH of a solution is < than the pKa of a basic side chain?

Answer 13

it will gain a proton and become positively charged

Question 14

What will a nucleophile do?

Answer 14

It will try to become covalently bonded to an electronegative substrate

Question 15

What is a zwitterion? What is one example?

Answer 15

It is an ion that can be positively and negatively charged. Free amino acids can do this due to their amino and carboxyl groups.

Question 16

What is HCG and what releases it?

Answer 16

human chorionic gonadotropin, released by the placenta to maintain the corpus luteum

Question 17

What do abnormally high estrogen levels indicate?

Answer 17

ovarian and adrenal tumors, also expressed in breast cancers

Question 18

What are FSH and LH and what do they do?

Answer 18

spur the development of the follicle in the first half of the ovarian cycle

Question 19

What does the corpus luteum produce?

Answer 19

progesterone and estrogen

Question 20

Power dissipated

Answer 20

P = I^2 (current) R

Question 21

Energy of a capacitor

Answer 21

E = (1/2) C (capacitance) V^2 (voltage)

Question 22

Period length

Answer 22

T = 1 / f

Question 23

What is positron decay?

Answer 23

add one neutron, lose one proton

Question 24

pKa

Answer 24

acid dissociation constant, indicates the strength of an acid in solution

pKa = -log [A-][H+]/[HA]

At half point of titration, Ka = [H+] because exactly half of the reactant is dissociated and [HA] and [A-] cancel ([A-][H+]/[HA]]), hence Ka = [H+] and pH = pKa

Question 25

Resistance in a tube

Answer 25

R = 8 l n (viscosity) / pi r^4

R is proportional to 1/r^4

Question 26

Change in pressure

Answer 26

delta P = QR, Q= flow (volume/time)

flow = stroke volume x heartbeat

Question 27

Rate of particles moving into a volume

Answer 27

V = (P1-P2)AD/Thickness

V/A = flux, (P1-P2/Thickness) = gradient

Flux = gradient x diffusion constant

Question 28

Lewis Acid

Answer 28

Electron pair acceptor / electrophile

Question 29

Lewis Base

Answer 29

Electron pair donor, nucleophile