Answer the following question given this paragraph: Most cancers are caused by mutations. Mutations are random errors in genes. Mutations that lead to cancer usually occur in genes that control the cell cycle. Because of the mutations, abnormal cells are allowed to divide. Q: What is the most common cause of cancer? Choices: - poor diet - smoking - technology mutations - cell mutations A:
cell mutations
(Question)
Answer the following question given this paragraph: Pressure has very little effect on the solubility of solids or liquids, but has a significant effect on the solubility of gases. Gas solubility increases as the partial pressure of a gas above the liquid increases. Suppose a certain volume of water is in a closed container with the space above it occupied by carbon dioxide gas at standard pressure. Some of the CO 2 molecules come into contact with the surface of the water and dissolve into the liquid. Now suppose that more CO 2 is added to the space above the container, causing a pressure increase. More CO 2 molecules are now in contact with the water and so more of them dissolve. Thus the solubility increases as the pressure increases. As with a solid, the CO 2 that is undissolved reaches an equilibrium with the dissolved CO 2 , represented by the following equation. Q: Pressure has a significant effect on the solubility of what state of matter? Choices: - mixtures - solids - water - gases A:
(Answer)
gases
Ques: Answer the following question given this paragraph: 17.3 The Pituitary Gland and Hypothalamus The hypothalamuspituitary complex is located in the diencephalon of the brain. The hypothalamus and the pituitary gland are connected by a structure called the infundibulum, which contains vasculature and nerve axons. The pituitary gland is divided into two distinct structures with different embryonic origins. The posterior lobe houses the axon terminals of hypothalamic neurons. It stores and releases into the bloodstream two hypothalamic hormones: oxytocin and antidiuretic hormone (ADH). The anterior lobe is connected to the hypothalamus by vasculature in the infundibulum and produces and secretes six hormones. Their secretion is regulated, however, by releasing and inhibiting hormones from the hypothalamus. The six anterior pituitary hormones are: growth hormone (GH), thyroid-stimulating hormone (TSH), adrenocorticotropic hormone (ACTH), follicle-stimulating hormone (FSH), luteinizing hormone (LH), and prolactin (PRL). Q: Where is the hypothalamuspituitary complex located in the body? Choices: - tribulus of the brain - subthalamic of the brain - stem of the brain - diencephalon of the brain A:
Ans: diencephalon of the brain
(Q).
Answer the following question given this paragraph: Q: What substances are secreted by specialized cells usually located in endocrine glands? Choices: - lipids - protein - acid - hormones A:
(A).
hormones
Ques:Answer the following question given this paragraph: Gene expression and protein synthesis are usually considered the same molecular process. Q: Gene expression and what else are usually considered the same molecular process? Choices: - photosynthesis - subtractive synthesis - organism synthesis - protein synthesis A:

Ans:protein synthesis
Answer the following question given this paragraph: Parasympathetic Division of the Autonomic Nervous System The parasympathetic division of the autonomic nervous system is named because its central neurons are located on either side of the thoracolumbar region of the spinal cord (para- = "beside" or "near"). The parasympathetic system can also be referred to as the craniosacral system (or outflow) because the preganglionic neurons are located in nuclei of the brain stem and the lateral horn of the sacral spinal cord. The connections, or "circuits," of the parasympathetic division are similar to the general layout of the sympathetic division with a few specific differences (Figure 15.4). The preganglionic fibers from the cranial region travel in cranial nerves, whereas preganglionic fibers from the sacral region travel in spinal nerves. The targets of these fibers are terminal ganglia, which are located nearor even withinthe target effector. These ganglia are often referred to as intramural ganglia when they are found within the walls of the target organ. The postganglionic fiber projects from the terminal ganglia a short distance to the target effector, or to the specific target tissue within the organ. Comparing the relative lengths of axons in the parasympathetic system, the preganglionic fibers are long and the postganglionic fibers are short because the ganglia are close toand sometimes withinthe target effectors. The cranial component of the parasympathetic system is based in particular nuclei of the brain stem. In the midbrain, the EdingerWestphal nucleus is part of the oculomotor complex, and axons from those neurons travel with the fibers in the oculomotor nerve (cranial nerve III) that innervate the extraocular muscles. The preganglionic parasympathetic fibers within cranial nerve III terminate in the ciliary ganglion, which is located in the posterior orbit. The postganglionic parasympathetic fibers then project to the smooth muscle of the iris to control pupillary size. In the upper medulla, the salivatory nuclei contain neurons with axons... Q: The parasympathetic system can also be referred to as the what? Choices: - badolato system - digestive system - lentivirus system - craniosacral system A:
craniosacral system