Answer the following question given this paragraph: Pulmonary gas exchange is the exchange of gases between inhaled air and the blood. It occurs in the alveoli of the lungs. Alveoli (singular, alveolus) are grape-like clusters surrounded by networks of thin-walled pulmonary capillaries. After you inhale, there is a greater concentration of oxygen in the alveoli than in the blood of the pulmonary capillaries, so oxygen diffuses from the alveoli into the blood across the capillaries (see Figure below ). Carbon dioxide, in contrast, is more concentrated in the blood of the pulmonary capillaries than in the alveoli, so it diffuses in the opposite direction. Q: In what part of the lungs is pulmonary gas exchanged? Choices: - bronchioles - trachea - bronchi - alveoli A:
alveoli
(Question)
Answer the following question given this paragraph: The building blocks of DNA are nucleotides. The important components of the nucleotide are a nitrogenous base, deoxyribose (5-carbon sugar), and a phosphate group (Figure 14.5). The nucleotide is named depending on the nitrogenous base. The nitrogenous base can be a purine such as adenine (A) and guanine (G), or a pyrimidine such as cytosine (C) and thymine (T). Q: What are the building blocks of dna? Choices: - prokaryotes - peptides - genes - nucleotides A:
(Answer)
nucleotides
Ques: Answer the following question given this paragraph: The second line of defense attacks pathogens that manage to enter the body. It includes the inflammatory response and phagocytosis by nonspecific leukocytes. Q: This bodily defense function attacks pathogens and includes inflammatory response and phagocytosis? Choices: - first line of defense - third line of defense - vomitting - second line of defense A:
Ans: second line of defense
(Q).
Answer the following question given this paragraph: Mutations that occur in body cells cannot be passed on to offspring. They are confined to just one cell and its daughter cells. These mutations may have little effect on an organism. Q: Mutations cannot be passed on to offspring if they occur in what type of cells? Choices: - put cells - kept cells - blood cells - body cells A:
(A).
body cells
Ques:Answer the following question given this paragraph: Base units have independent scales and cannot be described by a combination of any other base units. Examples of base units used in chemistry are length, mass, temperature, and time. Q: Time, mass, length, and temperature are considered to be what kinds of units? Choices: - support - measurement - unitary - base A:

Ans:base
Answer the following question given this paragraph: Energy is the ability to cause changes in matter. For example, your body uses chemical energy when you lift your arm or take a step. In both cases, energy is used to move matteryou. Any matter that is moving has energy just because it's moving. The energy of moving matter is called kinetic energy. Scientists think that the particles of all matter are in constant motion. In other words, the particles of matter have kinetic energy. The theory that all matter consists of constantly moving particles is called the kinetic theory of matter . You can learn more about the theory at this URL: http://www. youtube. com/watch?v=Agk7_D4-deY . Q: What is the ability to cause changes in matter? Choices: - force - hydrogen - pressure - energy A:
energy