Answer the following question given this paragraph: of human sperm as well as a diagram of the parts of the sperm. An acrosome is found at the top of the head of the sperm. This structure contains lysosomal enzymes that can digest the protective coverings that surround the egg to help the sperm penetrate and fertilize the egg. An ejaculate will contain from two to five milliliters of fluid with from 50120 million sperm per milliliter. Q: What structure is found at the top of the head of the sperm that helps it penetrate and fertilize the egg? Choices: - centriole - terminal disc - axial filament - acrosome A:
acrosome
Answer the following question given this paragraph: Q: What is a shortage of water that causes the soil to dry from the surface down called? Choices: - overflowage - tidal wave - flood - drought A:
drought
Q: Answer the following question given this paragraph: Weight is a measure of the force of gravity pulling on an object of a given mass. It equals the mass of the object (in kilograms) times the acceleration due to gravity (9.8 m/s 2 ). Q: What equals the mass of the object (in kilograms) times the acceleration due to gravity (9.8 m/s 2 )? Choices: - speed of light - density - velocity - weight A:
A: weight
Question: Answer the following question given this paragraph: The Moon has dark areas, called maria, surrounded by lighter colored highland areas, called terrae. Q: What are the dark areas of the moon called? Choices: - craters - hollow space - laura - maria A:
Answer: maria
*Question*
Answer the following question given this paragraph: Pressure Associated with the Lungs The pressure inside the lungs increases and decreases with each breath. The pressure drops to below atmospheric pressure (negative gauge pressure) when you inhale, causing air to flow into the lungs. It increases above atmospheric pressure (positive gauge pressure) when you exhale, forcing air out. Lung pressure is controlled by several mechanisms. Muscle action in the diaphragm and rib cage is necessary for inhalation; this muscle action increases the volume of the lungs thereby reducing the pressure within them Figure 11.39. Surface tension in the alveoli creates a positive pressure opposing inhalation. (See Cohesion and Adhesion in Liquids: Surface Tension and Capillary Action. ) You can exhale without muscle action by letting surface tension in the alveoli create its own positive pressure. Muscle action can add to this positive pressure to produce forced exhalation, such as when you blow up a balloon, blow out a candle, or cough. Q: During what phase of breathing does the pressure inside the lungs drops to below atmospheric pressure? Choices: - conduction - exhalation - ingestion - inhalation A:
**Answer**
inhalation
(Q).
Answer the following question given this paragraph: A rock under enough stress will fracture. There may or may not be movement along the fracture. If there is not movement, the fracture is a joint. If there is movement, the fracture is a fault. Q: What will happen to a rock when it's under tremendous stress? Choices: - it will slow - it will solidify - it will rebound - it will fracture A:
(A).
it will fracture