Answer the following question given this paragraph: Occipital Bone The occipital bone is the single bone that forms the posterior skull and posterior base of the cranial cavity (Figure 7.9; see also Figure 7.8). On its outside surface, at the posterior midline, is a small protrusion called the external occipital protuberance, which serves as an attachment site for a ligament of the posterior neck. Lateral to either side of this bump is a superior nuchal line (nuchal = "nape" or "posterior neck"). The nuchal lines represent the most superior point at which muscles of the neck attach to the skull, with only the scalp covering the skull above these lines. On the base of the skull, the occipital bone contains the large opening of the foramen magnum, which allows for passage of the spinal cord as it exits the skull. On either side of the foramen magnum is an oval-shaped occipital condyle. These condyles form joints with the first cervical vertebra and thus support the skull on top of the vertebral column. Q: What is the single bone that forms the posterior skull and posterior base of the cranial cavity? Choices: - limbic bone - maxilla - radiating bone - occipital bone A:
occipital bone
Answer the following question given this paragraph: Buffers work well only for limited amounts of added strong acid or base. Once either solute is all reacted, the solution is no longer a buffer, and rapid changes in pH may occur. We say that a buffer has a certain capacity. Buffers that have more solute dissolved in them to start with have larger capacities, as might be expected. Human blood has a buffering system to minimize extreme changes in pH. One buffer in blood is based on the presence of HCO3 and H2CO3 [H2CO3 is another way to write CO2(aq)]. With this buffer present, even if some stomach acid were to find its way directly into the bloodstream, the change in the pH of blood would be minimal. Inside many of the body's cells, there is a buffering system based on phosphate ions. Q: Human blood has a buffering system to minimize extreme changes in what? Choices: - sodium level - calcium - ions - ph A:
ph
Q: Answer the following question given this paragraph: Chemical digestion occurs when large food molecules are broken down into smaller nutrient molecules. This is a chemical process that begins in the mouth and stomach but occurs mainly in the small intestine. Q: Where does the majority of chemical digestion occur? Choices: - stomach - mouth - large intestine - small intestine A:
A: small intestine
Question: Answer the following question given this paragraph: The life sciences are so complex that most scientists focus on just one or two subspecialties. If you want to study insects, what would you be called? An entomologist. If you want to study the tiny things that give us the flu, then you need to enter the field of virology , the study of viruses. If you want to study the nervous system, which life science field is right for you ( Table below , Table below , and Table below )?. Q: What is the study of viruses called? Choices: - immunology - microbiology - biotechnology - virology A:
Answer: virology
*Question*
Answer the following question given this paragraph: Reading the Genetic Code. The genetic code is read three bases at a time. Codons are the code words of the genetic code. Which amino acid does codon 2 in the drawing stand for?. Q: What are the "code words" of the genetic code? Choices: - nucleotides - lipids - polymers - codons A:
**Answer**
codons
Answer the following question given this paragraph: Most protists are so small that they can be seen only with a microscope. Protists are mostly unicellular (one-celled) eukaryotes. A few protists are multicellular (many-celled) and surprisingly large. For example, kelp is a multicellular protist that can grow to be over 100-meters long ( Figure below ). Multicellular protists, however, do not show cellular specialization or differentiation into tissues. That means their cells all look the same and, for the most part, function the same. On the other hand, your cells often are much different from each other and have special jobs. Q: What type of eukaryotes are protists normally? Choices: - multicellular - photosynthetic - immature - unicellular A:
unicellular