A1 Justifications
Nina: 19, 23, 11
19. The correct answer for 19 is B because as you can see the cars with a lesser speeds
lines move at a smaller incline. You can see this by looking at the corresponding numbers
and knowing that when you have time and distance you find speed.
23. The correct answer for 23 is C because using the formula distance divided by time
you would get the speed of C 1 m/s
11. The answer for 11 is B because B is the only answer that could break down both
structures and functions.
Giana: 14,15, 17
14) The answer is gestation because gestation is the period of development in the uterus
from conception until birth.
15) The answer is D, because a gamete is a sexual reproductive cell, that then unites with
another one to form a new organism (sperm and egg cells). Then the gametes get
fertilized in the ampulla of the uterion tube. The result of this union is a zygote, a
fertilized egg. This fertilized egg then turns into an embryo, which is a multicellular
diploid eukaryote in its earliest stage of development, from the time of first cell division
until birth, hatching, or germination.
17) A. The breakdown of carbohydrates begins in the mouth. This is true because
digestion of starch begins in the mouth with the chewing of food and the production of
amylases immediately break down certain starches.
Beth: 24, 25, 27
24) The answer is D, because for example, if baldness is a trait, the girls wouldn’t get that
trait because their females so the male has that trait. Many other traits are sex-linked traits
that only males have. D would be the answer because it is the truth.
25) The answer is B, because there is only one box with a recessive trait and baldness is a
recessive trait so the only way for it to be possible is if you have two of the same so it is
only 25%.
27) The answer is D, because if you create a punnett square it comes out to show you the
only possible types are B and AB blood. Also those are the parents blood types which
play a big part in the blood type.
Julia Al-Hussaini
19) The answer is A because mitosis doubles the amount of chromosomes, while meiosis
divides the chromosomes in two.
A1 Justifications
22) The answer is A because it’s what you see most often. For example brown hair is
dominant over blonde hair because you see more people with brown hair, instead of
blonde hair.
23) The answer is D because a recessive trait is a non-dominant trait. So in order for an
offspring to have a recessive trait, both of the parents must carry the recessive gene.
Taylor: 21, 18, 19
18) The answer for 18 is C, because the definition of it is ”The process carried out by the
human body to maintain a constant temperature.” which is exactly what the lizard is
doing.
19) The answer is D, because the final step in fertilization is attaching the embryo to the
uterus lining. There are many steps before this to prepare for the last step. After that, the
embryo grows until birth.
21) The answer is D. Ureters, bladder(s) and intestines don’t regulate blood composition,
and they aren’t in the kidneys. Therefore, nephrons are the answer.
Science Exam Review
By: Savannah, Delaney, Katherine, Hannah, and Elisabeth
Force and Motion
16. The answer is “the same” because at point A there is no kinectic energy and
at point B there is no potential energy.
17. They are falling from the same speed after two seconds because when they
are free falling from a great height, weight doesn’t really matter because of
gravity.
Human Body
6. In your body, plasma carries hormones and nutrients. Plasma is the liquid
portion of blood that carries many things to and from different parts of the body.
7.the answer is a, the mouth because thats where the digestion process first
starts happening when you chew.
8. The answer is D (large intestine) because the large intestines absorb the
glucose and amino acids by breaking them down.
10. The answer is B (break down organic molecules so they can enter cells)
because that is the main function of the digestive system. It breaks down
molecules from the food you eat.
Weather
7. The answer is C. this is because the salt lowers the freezing point of water, this
means that ice can’t freeze as easily with the ice.
8.The answer is D. This is because tsunamis usually do not happen in the
Northeastern parts of the united states beca
use when the plates come together and cause a tsunami, the northeastern areas
of the United States are not on the intersection of those plates.
A1 Justifications
13.the answer is c because the front started over the gulf of mexico. you can tell
that it started there by the direction it came from which is the gulf of mexico.
Cells and Genetics
10.The answer is A, mutations in skin and muscle cells. This is because the
muscle and skin cells do not have a lot to do with reproduction.
11. The answer is D (a zygote) because that is what “complex organisms produce
sex cells that join during fertilization and form a single cell” is called.
13.The answer is A, where the penicillin is defeated by the bacteria . This is
because the person that had the bacteria had probably waited to get the
antibiotics, and then while the person was waiting, the bacteria grew.
14. the answer is b. this is because the sun can cause mutations to the plant or
eventually kill them.
15 it would damage the nucleus and it would change and obtain the basic food
processes.
16. The answer is C, telophase. i know this because during the mitosis process
that the cytoplasm divides and i knew it wasn’t during prophase or metaphase
because those were too early in the process and anaphase was too late so
therefore the answer is telophase.
Science Justification Questions
Force and Motion
13. The locomotive has an increasing velocity because the
formula for velocity is final velocity minus initial velocity
divided by time. The initial velocity was zero because it
was at rest, so the final velocity would more than the
initial, making the velocity increase. The acceleration
would be the same because the locomotive moved the
same speed throughout the twenty second period.
14. When the potential energy converts into kinetic
energy, there is an equal exchange.
Human Body
1. The answer is C because the veins direct the blood in
the right direction.
A1 Justifications
3. The gallbladder is what stores gastric juices that the
stomach makes.
4. That is when the baby is being carried in the mothers
womb it is getting the nutrients and growing as it should.
5. First in the process the gametes are made then
fertilized. Next the zygote is turned into an embryo that
grows into a baby.
Weather
3. Weather moves north to west, so the weather would be
sunny than rainy
4. The answer would be D because warm air rises and
cool air sinks.
5.The answer would A because wind is moving in a
clockwise motion so it would move to the east and up
north.
Cells and Genetics
1. The answer to number 1 is C because both parents
have to have the same number of chromosomes because
they have to give the same amount of chromosomes to
the zygote.
3. The answer is C fertilization because it restores the
normal 2n chromosomes for the future generation.
4. The answer is meiosis because that is when the stage
of different cells going into each cell. You can find this
answer by eliminating the other answer.
A1 Justifications
5.The answer is C because the cell wall protects the
nucleus. The nucleus is what powers the organism. There
are a lot of nuclei so there must be an equal amount of cell
walls.
6.The answer is C because the bees pollinate the flower,
which is like fertilization with humans.
7.The answer is D because a chromosome contains DNA
and genes. The DNA helps power the chromosome by
giving directions.
May 27th
A1 Turkovics
Science
Finn O., Mason H., Jared Y., Christopher S., Dylan T.
Weather Answers
30: Wind and breezes are named on the basis of:
What direction they are coming from because then it makes it easier for people to tell where
the wind is coming from based on its name and when you are record the wind patterns it is
easier to just say the name of the wind instead of explaining the direction it is going.
34: Which of the following always happens when heat is added to a substance?The motion
of the molecules speed up because An increase in the speed of the molecules competes
with the attraction between molecules and causes molecules to move a little further apart.
Human Body Answers
26: Platelets do not carry oxygen because they are supposed to heal your body not carry
oxygen.
27: The arteries because it transfers oxygen and blood from the heart.
28: The large intestine absorbs the most water because it connects right to the stomach
and when the stomach releases the liquids it goes right into the large intestine and the large
intestine also collect proteins and other substances.
32: What happens to blood when it is pumped into the thin-walled blood vessels of the
lungs?
The answer is Carbon dioxide is replaced with oxygen because when you breathe in you
take in oxygen which your blood takes and then goes up to the heart to be transferred to
other parts of the body.
25: If we did not have any valves in our heart we would not have any blood pressure or
circulation because we would not be able to pump blood to other areas of our body.
A1 Justifications
Forces and Motion
27
A wagon is pulled with constant velocity, all forces on the wagon are unbalanced because
when forces are balanced the object is at rest. When the forces are unbalanced it is moving
because of those forces
29
Good reference points to describe the motion of a dog could be either a tree, the ground, or
even another dog moving. This is because reference points are anything to compare an
objects motion to.
Cells and Genetics Answers:
34. Answer: D. DNA Holds all the information and Directions in the human body.
35. Answer: A. The answer is correct because once a Cell grows they must use they must
divide themselves to keep reproducing cells for the human body.
39. Answer: D. The Volvox move in a thing called “Colonies” They do not travel by
themselves and instead move in colonies or groups.
40. A is the correct answer because the light arrows show oxygen being changed into
carbon dioxide.
44. A is the answer because the cell membrane determines what comes in to the cell, and if
it’s rejecting the saltwater then it will shrink in order to protect it self.
45. A is the answer because an amoeba is the only protist that uses pseudopods for
movement.
A1 Justifications