Answer the following question given this paragraph: The main functions of the male reproductive system are to produce sperm and secrete testosterone. Q: Producing sperm and secreting testosterone are the main functions of what system? Choices: - pollination - endocrine system - female reproductive system - male reproductive system A:
male reproductive system
Answer the following question given this paragraph: Exercise and Stretching When exercising, it is important to first warm up the muscles. Stretching pulls on the muscle fibers and it also results in an increased blood flow to the muscles being worked. Without a proper warm-up, it is possible that you may either damage some of the muscle fibers or pull a tendon. A pulled tendon, regardless of location, results in pain, swelling, and diminished function; if it is moderate to severe, the injury could immobilize you for an extended period. Recall the discussion about muscles crossing joints to create movement. Most of the joints you use during exercise are synovial joints, which have synovial fluid in the joint space between two bones. Exercise and stretching may also have a beneficial effect on synovial joints. Synovial fluid is a thin, but viscous film with the consistency of egg whites. When you first get up and start moving, your joints feel stiff for a number of reasons. After proper stretching and warm-up, the synovial fluid may become less viscous, allowing for better joint function. Q: What fluid becomes less viscous, allowing for better joint function after stretching? Choices: - proximal - vertebral - cranial - synovial A:
synovial
Q: Answer the following question given this paragraph: Most fungi are decomposers. They are the main decomposers in forests. Many fungi have symbiotic relationships with other species. Q: What organism is responsible for most decomposition in forest? Choices: - coral - bacteria - yeast - fungi A:
A: fungi
Question: Answer the following question given this paragraph: Q: What process consists of the mechanisms that produce an observed pattern of change? Choices: - repetition - variation - cycle - evolution A:
Answer: evolution
*Question*
Answer the following question given this paragraph: Q: An irreversible increase in size is known as? Choices: - mass - strength - volume - growth A:
**Answer**
growth
(Question)
Answer the following question given this paragraph: There is always a slightly negative pressure within the thoracic cavity, which aids in keeping the airways of the lungs open. During inhalation, volume increases as a result of contraction of the diaphragm, and pressure decreases (according to Boyle's Law). This decrease of pressure in the thoracic cavity relative to the environment makes the cavity less than the atmosphere (Figure 39.16a). Because of this drop in pressure, air rushes into the respiratory passages. To increase the volume of the lungs, the chest wall expands. This results from the contraction of the intercostal muscles, the muscles that are connected to the rib cage. Lung volume expands because the diaphragm contracts and the intercostals muscles contract, thus expanding the thoracic cavity. This increase in the volume of the thoracic cavity lowers pressure compared to the atmosphere, so air rushes into the lungs, thus increasing its volume. The resulting increase in volume is largely attributed to an increase in alveolar space, because the bronchioles and bronchi are stiff structures that do not change in size. Q: There is always a slightly negative pressure within what cavity, helping keep the airways of the lungs open? Choices: - anal - cervical - spinal - thoracic A:
(Answer)
thoracic