Q: Q: Which proteins recognize and combine with harmful materials, including both toxic chemicals and invasive microorganisms? Read this paragraph and choose the correct option from the provided answers: 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. Choices: - enzymes - collagen - essential amino acids - antibodies A:
A: antibodies

Q: Q: Proteins include 20 common types of what compounds? Read this paragraph and choose the correct option from the provided answers: There are 20 common amino acids in proteins. There are 64 possible codons, more than enough to code for the 20 amino acids. The genetic code is shown in Figure below . To see how scientists cracked the genetic code, go to this link: http://www. dnalc. org/view/16494-Animation-22-DNA-words-are-three-letters-long-. html . Choices: - mitochondria - rna acids - dna - amino acids A:
A: amino acids

Q: Q: What device is a magnetic disc that provides long-term storage for programs and data? Read this paragraph and choose the correct option from the provided answers: The hard drive is a magnetic disc that provides long-term storage for programs and data. Choices: - software - cassette - floppy drive - hard drive A:
A: hard drive

Q: Q: What can be thought of as the capacity a device has for storing charge? Read this paragraph and choose the correct option from the provided answers: The amount of charge, , held by each plate is given by where again is the voltage difference between the plates and is the capacitance of the plate configuration. Capacitance can be thought of as the capacity a device has for storing charge . In the parallel plate case the capacitance is given by where is the area of the plates, is the distance between the plates, and is the permittivity of free space whose value is . Choices: - potential - velocity - resonance - capacitance A:
A: capacitance