Answer the following question given this paragraph: Gene expression is regulated to ensure that the correct proteins are made when and where they are needed. Regulation may occur at any point in the expression of a gene, from the start of transcription to the processing of a protein after translation. The focus in this lesson is the regulation of transcription. Q: What is regulated to ensure that the correct proteins are made? Choices: - acids expression - variation expression - Fat expression - gene expression A:
gene expression
(Question)
Answer the following question given this paragraph: Metals can conduct electricity because they have free electrons. Q: Because they have free electrons, metals are able to conduct what? Choices: - sound - light - radiation - electricity A:
(Answer)
electricity
Ques: Answer the following question given this paragraph: Oxidation can be defined as the addition of oxygen to a molecule or the removal of hydrogen from a molecule. When an alkane is heated in the presence of an appropriate catalyst, it can be oxidized to the corresponding alkene in a reaction called a dehydrogenation reaction. Two hydrogen atoms are removed in the process. The alkene can be further oxidized to an alkyne by the removal of two more hydrogen atoms. Q: What is the addition of oxygen to a molecule or the removal of hydrogen from a molecule called? Choices: - precipitation - evaporation - ionization - oxidation A:
Ans: oxidation
(Q).
Answer the following question given this paragraph: The mammalian middle ear has three tiny bones that carry sound vibrations from the outer to inner ear. The bones give mammals exceptionally good hearing. In other vertebrates, the three bones are part of the jaw and not involved in hearing. Q: How many bones does the mammalian middle ear have? Choices: - two - twelve - four - three A:
(A).
three
Ques:Answer the following question given this paragraph: Neutral amines are weak bases, because the lone pair on nitrogen can act as a proton acceptor. Many smaller amines have very strong and offensive odors. For example, the aptly-named compounds cadaverine and putrescine are foul-smelling amines, formed as a part of the decay process after death. Q: What are the names of foul-smelling amines, formed as a part of the decay process after death? Choices: - formaldehyde and cadaverine - sulfur and formaldehyde - methane and sulfur - cadaverine and putrescine A:

Ans:cadaverine and putrescine
Answer the following question given this paragraph: The largest known virus, called mimivirus, is so large that scientists first mistook it for a bacterium. It was first discovered in amoeba, in 1992, and was identified as a virus in 2003. Scientists believe that mimivirus may cause certain types of pneumonia in humans. The core contains DNA, with the majority of the DNA in genes, and only 10% DNA of unknown function ("junk" DNA). Q: What is the largest known virus? Choices: - polyomavirus - influenza virus - pneumonia virus - mimivirus A:
mimivirus