Q: Answer the following question given this paragraph: Antibodies These proteins recognize and combine with harmful materials, including both toxic chemicals and invasive microorganisms (such as bacteria and viruses). When an antibody binds to its target, it is tagged for destruction. This tag is recognized by white blood cells, which complete the process. Some antibodies also partially or completely deactivate their targets while waiting for further help from white blood cells. Q: Which proteins recognize and combine with harmful materials, including both toxic chemicals and invasive microorganisms? Choices: - enzymes - collagen - essential amino acids - antibodies A:
A: antibodies

Q: Answer the following question given this paragraph: Proteins are molecules that have many different functions in living things. All proteins are made of monomers called amino acids ( Figure below ) that connect together like beads on a necklace ( Figure below ). There are only 20 common amino acids needed to build proteins. These amino acids form in thousands of different combinations, making about 100,000 or more unique proteins in humans. Proteins can differ in both the number and order of amino acids. It is the number and order of amino acids that determines the shape of the protein, and it is the shape (structure) of the protein that determines the unique function of the protein. Small proteins have just a few hundred amino acids. The largest proteins have more than 25,000 amino acids. Q: All proteins are made of monomers called what? Choices: - monotides - aminotides - peptides - amino acids A:
A: amino acids

Q: Answer the following question given this paragraph: An element is the simplest form of matter that has a unique set of properties. Examples of well-known elements include oxygen, iron, and gold (see the figure below). Elements cannot be broken down into a simpler substance. Likewise, one element cannot be chemically converted into a different element. Q: What is the term for the simplest form of matter that has a unique set of properties? Choices: - an electron - an atom - a neutron - an element A:
A: an element

Q: Answer the following question given this paragraph: Q: Photoreceptors in each ocellus receive light only through the opening where there are none of which cells? Choices: - clear - opqaue - secreted - pigmented A:
A: pigmented