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
Answer the following question given this paragraph: Adolescents may have mood swings because of surging hormones. Q: Many adolescents experience frequent mood swings. name one of the causes for this. Choices: - maturing nervous system - psychological changes - growing hormones - surging hormones A:
surging hormones
Q: Answer the following question given this paragraph: Cartilage: There are three cartilage types: 1. hyaline cartilage 2. fibrocartilage (fibrous cartilage) 3. elastic cartilage Hyaline cartilage: most widespread cartilage type, in adults forms articular surfaces of long bones, rib tips, rings of trachea, and parts of skull. Mostly collagen, name refers to glassy appearance. In embryo, bones form first as hyaline cartilage, later ossifies. Found in tracheal rings. Few collagen fibers. Fibrous cartilage: have lots of collagen fibers. Found in intervertebral discs, pubic symphesis. Grades into dense tendon and ligament tissue. Elastic cartilage: springy and elastic. Found in internal support of external ear and in epiglottis, yellow when fresh. Chondrocites (cartilage cells) rely on diffusion for nutrients, as cartilage has no direct blood supply, and no enervation (nerves). Can be loaded with calcium salts. Q: Comprised mainly of collagen and associated with long bones and the skull, hyaline is the most widespread type of what? Choices: - enzymes - tissue - cytoplasm - collagen A:
A: collagen
Question: Answer the following question given this paragraph: Isomers that contain the same number of atoms of each kind but differ in which atoms are bonded to one another are called structural isomers. Isobutane and n-butane are examples of structural isomers. One kind of isomerism consists of two compounds that have the same empirical formula but differ in the number of formula units present in the molecular formula. An example in coordination compounds is two compounds with the empirical formula Pt(NH 3)2Cl2. One is a simple square planar platinum(II) complex, Pt(NH3)2Cl2, and the other is an ionic compound that contains the [Pt(NH 3)4]2+ cation and the [PtCl4]2 anion, [Pt(NH3)4][PtCl4]. As you might expect, these compounds have very different physical and chemical properties. One arrangement of the Cl and NH3 ligands around the platinum ion in the former gives the anticancer drug cisplatin, whereas the other arrangement has no known biomedical applications. Q: What type of isomers contain the same number of atoms of each kind but differ in which atoms are bonded to one another? Choices: - different isomers - unique isomers - constitutional isomers - structural isomers A:
Answer: structural isomers
*Question*
Answer the following question given this paragraph: Bacterial STIs include chlamydia, gonorrhea, and syphilis. Q: Chlamydia, gonorrhea, and syphilis are examples of which type of sti? Choices: - non-contagious - viral - incurable - bacterial A:
**Answer**
bacterial
*Question*
Answer the following question given this paragraph: The voltage of a voltaic cell can be determined by the reduction potentials of the half reactions. Q: The voltage of a voltaic cell can be determined by the reduction potentials of what? Choices: - full reactions - thermal reactions - old reactions - half reactions A:
**Answer**
half reactions