*Question*
Answer the following question given this paragraph: Lactose Lactose is known as milk sugar because it occurs in the milk of humans, cows, and other mammals. In fact, the natural synthesis of lactose occurs only in mammary tissue, whereas most other carbohydrates are plant products. Human milk contains about 7.5% lactose, and cow's milk contains about 4.5%. This sugar is one of the lowest ranking in terms of sweetness, being about one-sixth as sweet as sucrose (seeTable 16.1 "The Relative Sweetness of Some Compounds (Sucrose = 100)" in Section 16.3 "Important Hexoses"). Lactose is produced commercially from whey, a by-product in the manufacture of cheese. It is important as an infant food and in the production of penicillin. Lactose is a reducing sugar composed of one molecule of D-galactose and one molecule of D-glucose joined by a -1,4-glycosidic bond (the bond from the anomeric carbon of the first monosaccharide unit being directed upward). The two monosaccharides are obtained from lactose by acid hydrolysis or the catalytic action of the enzyme lactase:. Q: Where does the natural synthesis of lactose occur? Choices: - ovarian tissue - nervous tissue - liver tissue - mammary tissue A:
**Answer**
mammary tissue

*Question*
Answer the following question given this paragraph: After hatching, most arthropods go through one or more larval stages before reaching adulthood. The larvae may look very different from the adults. They change into the adult form in a process called metamorphosis. During metamorphosis, the arthropod is called a pupa. It may or may not spend this stage inside a special container called a cocoon. A familiar example of arthropod metamorphosis is the transformation of a caterpillar (larva) into a butterfly (adult) (see Figure below ). Distinctive life stages and metamorphosis are highly adaptive. They allow functions to be divided among different life stages. Each life stage can evolve adaptations to suit it for its specific functions without affecting the adaptations of the other stages. Q: What is the process of larva becoming an adult called? Choices: - parthenogenesis - synthesis - evolution - metamorphosis A:
**Answer**
metamorphosis

*Question*
Answer the following question given this paragraph: Q: Researchers have long based their hypotheses about animal phylogeny on what? Choices: - longitudinal data - manipulative data - distinctive data - morphological data A:
**Answer**
morphological data

*Question*
Answer the following question given this paragraph: One advantage of anaerobic respiration is obvious. It lets organisms live in places where there is little or no oxygen. Such places include deep water, soil, and the digestive tracts of animals such as humans (see Figure below ). Q: What is the measure of electric current? Choices: - intensity - watts - volts - ampheres A:
**Answer**
ampheres