Q: Answer the following question given this paragraph: Reactive elements combine easily with other elements. This explains why they usually exist in nature in compounds rather than in pure form. Q: Reactive elements are able to combine more what with other elements? Choices: - slowly - quickly - symmetrically - easily A:
A: easily

Q: Answer the following question given this paragraph: Asexual reproduction involves just one parent. It produces offspring that are genetically identical to the parent. Methods of asexual reproduction include binary fission, fragmentation, and budding. Q: What type of reproduction only involves one parent? Choices: - primitive - organic - binary - asexual A:
A: asexual

Q: Answer the following question given this paragraph: Microevolution occurs in a population when its allele frequencies change over time. There are four major forces of evolution that cause allele frequencies to change: mutation, gene flow, genetic drift, and natural selection. Q: Microevolution occurs in a population when what frequencies change over time? Choices: - eukaryote - molecule - antenna - allele A:
A: allele

Q: Answer the following question given this paragraph: Pepsinogen is an inactive form of pepsin; pepsin is the active form of the enzyme. Both enzymes catalyze the hydrolysis of peptide bonds. Chymotrypsin catalyzes the hydrolysis of peptide bonds following aromatic amino acids, while trypsin catalyzes the hydrolysis of peptide bonds following lysine and arginine. Aminopeptidase catalyzes the hydrolysis of amino acids from the N-terminal end of a protein, while carboxypeptidase catalyzes the hydrolysis of amino acids from the Cterminal end of a protein. Q: What catalyzes the hydrolysis of amino acids from the n-terminal end of a protein? Choices: - synthase - testosterone - nucleic acid - aminopeptidase A:
A: aminopeptidase