*Question*
Answer the following question given this paragraph: Group 14 is called the carbon group. This group contains two metalloids: silicon and germanium. Carbon is a nonmetal, and the remaining elements in this group are metals. Q: What is the name of the two metalloids in the carbon group called? Choices: - titantium and copper - silicon and gold - silver and gold - silicon and germanium A:
**Answer**
silicon and germanium

*Question*
Answer the following question given this paragraph: Plasma cells are activated B cells that secrete antibodies. Antibodies are large, Y-shaped proteins that recognize and bind to antigens. Plasma cells are like antibody factories, producing many copies of a single type of antibody. The antibodies travel throughout the body in blood and lymph. Each antibody binds to just one kind of antigen. When it does, it forms an antigen-antibody complex (see Figure below ). The complex flags the antigen-bearing cell for destruction by phagocytosis . Q: What do you call large, y-shaped proteins that recognize and bind to antigens? Choices: - proteins - membranes - parasites - antibodies A:
**Answer**
antibodies

*Question*
Answer the following question given this paragraph: Q: The db gene encodes the which receptor? Choices: - glucose - opioid - estrogen - leptin A:
**Answer**
leptin

*Question*
Answer the following question given this paragraph: Leaf Structure and Function The outermost layer of the leaf is the epidermis; it is present on both sides of the leaf and is called the upper and lower epidermis, respectively. Botanists call the upper side the adaxial surface (or adaxis) and the lower side the abaxial surface (or abaxis). The epidermis helps in the regulation of gas exchange. It contains stomata (Figure 30.24): openings through which the exchange of gases takes place. Two guard cells surround each stoma, regulating its opening and closing. Q: The outermost layer of the leaf is the epidermis; it is present on both sides of the leaf and is called the upper and lower epidermis, respectively. botanists call the upper side the adaxial surface (or adaxis) and the lower side this? Choices: - dorsal surface - posterior surface - anterior surface - abaxial surface (or abaxis) A:
**Answer**
abaxial surface (or abaxis)