Answer the following question given this paragraph: The prostate gland secretes a fluid that mixes with sperm to help form semen. Semen is a whitish liquid that contains sperm. It passes through the urethra and out of the body. Q: What gland secretes a fluid that mixes with sperm to help form semen? Choices: - testicle - thymus - thyroid - prostate gland A:
prostate gland
Answer the following question given this paragraph: Nearly all earthquakes occur at plate boundaries, and all types of plate boundaries have earthquakes. Q: Nearly all earthquakes occur where? Choices: - plate centers - in Asia - in large cities - plate boundaries A:
plate boundaries
Q: Answer the following question given this paragraph: Respiratory tree: terminates in alveolus, alveoli. Respiratory bronchioles branch into alveolar ducts and into alveoli. Alveolus: microscopic air sacs, 300 million of these in human lungs. Total surface area large. Gas diffuses micrometer, very tiny distance. Nervous System Composed of tissues designed to integrate sensory information and direct a coordinated response to the environment. Basic unit of the nervous system is the neuron1 , a highly specialized cell that uses both electrical and chemical processes to communicate. Neurons "listen" to sensory organs or other neurons, and can simultaneously "hear" from 1 to hundreds of inputs simultaneously. Likewise, a neuron can "talk" to other neurons or cells that can create an action, like muscle cells or glands. Neurons are outnumbered in the nervous system by glia. Glia were once thought to only play a supportive role in helping neurons survive; today we know that they also are important participants in the communication process. Glial cells include astrocytes, ependymal cells, and a cell that has a macrophage like function. There are also oligodendocytes and Schwann cells that provide a myelin sheath. Q: Alveoli can be found in which organ in the human body? Choices: - Stomach - Liver - Heart - lungs A:
A: lungs
Question: Answer the following question given this paragraph: Radioactive Decay Series The naturally occurring radioactive isotopes of the heaviest elements fall into chains of successive disintegrations, or decays, and all the species in one chain constitute a radioactive family, or radioactive decay series. Three of these series include most of the naturally radioactive elements of the periodic table. They are the uranium series, the actinide series, and the thorium series. The neptunium series is a fourth series, which is no longer significant on the earth because of the short half-lives of the species involved. Each series is characterized by a parent (first member) that has a long half-life and a series of daughter nuclides that ultimately lead to a stable end-productthat is, a nuclide on the band of stability (Figure 21.9). In all three series, the end-product is a stable isotope of lead. The neptunium series, previously thought to terminate with bismuth-209, terminates with thallium-205. Q: The uranium series is a chain constituting one what, which encompass naturally occurring isotopes of the heaviest elements? Choices: - nuclear decay family - gland decay family - fuel decay family - radioactive decay family A:
Answer: radioactive decay family
*Question*
Answer the following question given this paragraph: Bones are the main organs of the skeletal system. The skeletal system also includes cartilage and ligaments. Q: Bones are the main organs of what system, which also includes cartilage and ligaments? Choices: - lymphatic system - digestive system - endocrine system - skeletal system A:
**Answer**
skeletal system
*Question*
Answer the following question given this paragraph: Binary fission occurs when a parent cell simply splits into two daughter cells. This method is described in detail in the lesson "Cell Division. " Bacteria reproduce this way. You can see a bacterial cell reproducing by binary fission in Figure below . Q: How does bacteria reproduce? Choices: - sexual reproduction - budding - pollination - binary fission A:
**Answer**
binary fission