Test 2 Flashcards
phototropism is demonstrated when
a plant grows towards the sun
what is an angiogram
a test that creates a photograph of the blood flow in the arteries or veins
what is amniocentesis
atf or amniotic fluid test. Medical procedure used in prenatal diagnosis of chromosomal abnormalities, fetal infections, and determination of sex
ionic bond between two elements involves
a transfer of electrons
low pH in the stomach, cilia present in the trachea, and mucus present in the nasal cavity are all examples of what
primary defenses
cells in the body recognizing a pathogen is an example of what kind of defense
third defense
The movement of air through the respiratory system depends on what
how hard the lungs push air out of the body
Bowman’s capsule, glomeruli, nephrons are found where
the kidneys
An amino acid contains 2 groups. What are they
R-NH2 amine and R-COOH carboxyl
name an element that is most likely to be found in an organic compound
carbon
Blue litmus paper turns red when the pH of a solution is
acidic a reading of less than 7 on a pH scale
blue litmus paper will stay blue if a solution is basic
red litmus paper turns blue when the pH of a solution is
basic- a reading of greater than 7 on a pH scale
red litmus paper will stay red if a solution is acidic
Neutral litmus paper is what color
purple
what forms when an acid reacts with an active metal such as zinc
a salt and H2 gas
liver, pancreas and gallbladder are all examples of what
accessory organs
Bile is produced in __ and the is stored in the___ and helps to digest___ via ___
liver-gallbladder- fats- emulsification
formula for power
P=IV power= current x voltage
protease is an enzyme digests what
proteins
breathing occurs through the actions of the what
diaphragm
axon, dendrite, myelin sheath are all part of what
physical part of a nerve cell
why are metals malleable
electron clusters
a solution with a hydrogen ion concentration of
1 x 10^ -2 would be considered what
acidic because a pH reading of 2 is less than 7 which makes is acidic
refraction is what
the bending of light
rods vs cones
rods are numerous and define general shades of light and function best in low light
cones are few they define colors and bright light conditions
if rods were damaged the nerves of the eye would not be able to see well
in low light conditions
collisions between molecules have what type of effect on kinetic energy
they have no energy gain or loss. Kinetic energy remains the same.
* elastic collision. typically rare
eggs are produced where in the female body
ovaries
what color lights are best absorbed by chlorophyl
red and blue
what wavelengths is chlorophyl best absorbed at
red and blue light is usually btwn 660 and 430nm
stigma, pistil, style are all examples of what
female plant reproductive system
what # scale is the pH scale on?
a scale of 10. so a pH of 3 is 1000 times stronger than a pH of 6. 3pH difference = 10x10x10
what type of solution has fewer hydronium ions and more hydroxide ions
a basic solution
what is a transverse wave
a wave that moves perpendicular and does not have compression or expansion. ex ripple in pond
what is the atomic mass of carbon
12
the phloem of a plant transports what
the food from the leaves
xylem transports what in plants
water from the roots to the leaves
cellular respiration releases what in plants
oxygen through the leaves
what is the golgi apparatus
modifies and repackages lipids and proteins and sends them throughout the cell
red blood cells consist of what
hemoglobin and enzymes purpose is to carry oxygen
formula for the area of a square
area of a square= width x length
formula to find the circumference of a circle
c=2 x radius x pie (3.14)
Formula for acceleration
divide the change in velocity (aka speed) by the change in time
how do you find momentum and how is it measured?
multiply mass by velocity (speed) or p=mv measured in kg*m/s
Newtons are measured in what kind of units?
Newtons are the unit that measure for force which is calculated by force= massacceleration (f=ma)
the unit is measured in kgm/s^2
pepsin enzymes help digest ___ in the stomach
proteins
___ helps protect the stomach lining during digestion and hormones stimulate acids, and ions join to create ____ which helps break down food
mucus ; hydrocholoric acid
name two neutral gasses that don’t invoke a color change in litmus paper
nitrogen and oxygen
