Answer the following question given this paragraph: The atmosphere has layers. The layers correspond with how temperature changes with altitude. By understanding the way temperature changes with altitude, we can learn a lot about how the atmosphere works. Q: The layers of the atmosphere correspond with what changes with altitude? Choices: - friction - nitrogen - oxygen - temperature A:
temperature
(Question)
Answer the following question given this paragraph: Trisomy is a state where humans have an extra autosome. That is, they have three of a particular chromosome instead of two. For example, trisomy 18 results from an extra chromosome 18, resulting in 47 total chromosomes. To identify the chromosome number (including an abnormal number), a sample of cells is removed from an individual or developing fetus. Metaphase chromosomes are photographed and a karyotype is produced. A karyotype will display any abnormalities in chromosome number or large chromosomal rearrangements. Trisomy 8, 9, 12, 13, 16, 18, and 21 have been identified in humans. Trisomy 16 is the most common trisomy in humans, occurring in more than 1% of pregnancies. This condition, however, usually results in spontaneous miscarriage in the first trimester. The most common trisomy in viable births is Trisomy 21 . Q: What is it called when a human has an extra autosome? Choices: - monosomy - polysomy - mosaicism - trisomy A:
(Answer)
trisomy
Ques: Answer the following question given this paragraph: Wine, air, and gunpowder are other examples of common homogeneous mixtures ( Figure below ). Their exact compositions can vary, making them mixtures rather than pure substances. Wine is a liquid mixture of water, ethanol, and a variety of other dissolved substances. Air is a mixture of nitrogen gas (78%), oxygen gas (21%), and small amounts of various other gases. Gunpowder is a solid mixture comprised of potassium nitrate (75%), charcoal (15%) and sulfur (10%). Q: Wine, air, and gunpowder are all examples of what kind of common mixtures? Choices: - combined - contiguous - heterogeneous - homogeneous A:
Ans: homogeneous
(Q).
Answer the following question given this paragraph: Acceleration is a measure of the change in velocity of a moving object. It measures the rate at which velocity changes. Velocity, in turn, is a measure of the speed and direction of motion, so a change in velocity may reflect a change in speed, a change in direction, or both. Both velocity and acceleration are vectors. A vector is any measurement that has both size and direction. People commonly think of acceleration as in increase in speed, but a decrease in speed is also acceleration. In this case, acceleration is negative and called deceleration. A change in direction without a change in speed is acceleration as well. Q: What is the term for the rate at which velocity changes? Choices: - stability - transmission - compression - acceleration A:
(A).
acceleration
Ques:Answer the following question given this paragraph: Illustration of the two types of vesicle transport, exocytosis and endocytosis. Endocytosis and exocytosis are types of vesicle transport that carry very large molecules across the cell membrane. Q: Endocytosis and exocytosis are types of vesicle transport that carry very large molecules across what structure? Choices: - cell substrate - the heart - dermis - cell membrane A:

Ans:cell membrane
Ques:Answer the following question given this paragraph: Concentration is the number of particles of a substance in a given volume. When the concentration of reactants is higher, the reaction rate is faster. At higher concentrations, particles of reactants are crowded closer together, so they are more likely to collide and react. Did you ever see a sign like the one in Figure below ? You might see it where someone is using a tank of pure oxygen for a breathing problem. The greater concentration of oxygen in the air makes combustion rapid if a fire starts burning. Q: The number of particles of a substance in a given volume is known as? Choices: - frequency - range - mass - concentration A:

Ans:
concentration