Answer the following question given this paragraph: External Respiration The pulmonary artery carries deoxygenated blood into the lungs from the heart, where it branches and eventually becomes the capillary network composed of pulmonary capillaries. These pulmonary capillaries create the respiratory membrane with the alveoli (Figure 22.22). As the blood is pumped through this capillary network, gas exchange occurs. Although a small amount of the oxygen is able to dissolve directly into plasma from the alveoli, most of the oxygen is picked up by erythrocytes (red blood cells) and binds to a protein called hemoglobin, a process described later in this chapter. Oxygenated hemoglobin is red, causing the overall appearance of bright red oxygenated blood, which returns to the heart through the pulmonary veins. Carbon dioxide is released in the opposite direction of oxygen, from the blood to the alveoli. Some of the carbon dioxide is returned on hemoglobin, but can also be dissolved in plasma or is present as a converted form, also explained in greater detail later in this chapter. External respiration occurs as a function of partial pressure differences in oxygen and carbon dioxide between the alveoli and the blood in the pulmonary capillaries. Q: The pulmonary artery carries deoxygenated blood into the lungs from this? Choices: - legs - bladder - brain - heart A:
heart
Answer the following question given this paragraph: In Iceland, the Mid-Atlantic Ridge is above sea level. It's the only place we can see a mid-ocean ridge out of the water. The Midlina Bridge connects two plates. On the west side is the North American plate. On the east side is the Eurasian plate. A mid-ocean ridge is where new crust is created. Eventually this spot will be beneath the Atlantic Ocean. Q: In iceland, the mid-atlantic ridge is above sea what? Choices: - atmosphere - bottom - tide - level A:
level
Q: Answer the following question given this paragraph: As you can see in Figure below , both body plans have radial symmetry. Some cnidarian species alternate between medusa and polyp forms. Other species exist in just one form or the other. Q: What type of species can alternate between medusa and polyp forms? Choices: - mollusks - crocodilian - chordata - cnidarian A:
A: cnidarian
Question: Answer the following question given this paragraph: Next, we identify the least precise measurement: 13.7 kg. This measurement is expressed to the 0.1 decimal place, so our final answer must also be expressed to the 0.1 decimal place. Thus, the answer is rounded to the tenths place, giving us 15.2 kg. Significant Figures in this Text In this text, most numbers are assumed to have three significant figures. Furthermore, consistent numbers of significant figures are used in all worked examples. You will note that an answer given to three digits is based on input good to at least three digits, for example. If the input has fewer significant figures, the answer will also have fewer significant figures. Care is also taken that the number of significant figures is reasonable for the situation posed. In some topics, particularly in optics, more accurate numbers are needed and more than three significant figures will be used. Finally, if a number is exact, such as the two in the formula for the circumference of a circle, c = 2r , it does not affect the number of significant figures in a calculation. Q: What type of numerical figure is important in considering the precision and accuracy of a number? Choices: - component - insignificant - exponent - significant A:
Answer: significant
*Question*
Answer the following question given this paragraph: Excretion is the process of removing wastes and excess water from the body. It is one of the major ways the body maintains homeostasis. Q: What term is used to describe the process of removing wastes and excess water from the body? Choices: - diffusion - digestion - aeration - excretion A:
**Answer**
excretion
(Q).
Answer the following question given this paragraph: Hydrogen bonds also explain why water's boiling point (100C) is higher than the boiling points of similar substances without hydrogen bonds. Because of water's relatively high boiling point, most water exists in a liquid state on Earth. Liquid water is needed by all living organisms. Therefore, the availability of liquid water enables life to survive over much of the planet. Q: What is to blame for water's boiling point (100c) being higher than the boiling points of similar substances? Choices: - electrode bonds - molecular shape - helium bonds - hydrogen bonds A:
(A).
hydrogen bonds