Answer the following question given this paragraph: (a) When pyrimidine or purine and a sugar react to form a glycosidic bond, a nucleoside is produced. Adding a phosphoric acid group to the sugar of a nucleoside produces a nucleotide. (b) Nucleotides link together to form long polymeric chains. A DNA molecule consists of two such chains held together by hydrogen bonding between the purine and pyrimidine components on different chains. Mutations in the DNA of an organism may lead to the synthesis of defective proteins. Phenylketonuria (PKU), for example, is a condition caused by a defective enzyme. Left. Q: What links together to form long polymeric chains? Choices: - genes - lipids - peptides - nucleotides A:
nucleotides
Answer the following question given this paragraph: The building blocks of DNA are nucleotides. The important components of the nucleotide are a nitrogenous base, deoxyribose (5-carbon sugar), and a phosphate group (Figure 14.5). The nucleotide is named depending on the nitrogenous base. The nitrogenous base can be a purine such as adenine (A) and guanine (G), or a pyrimidine such as cytosine (C) and thymine (T). Q: What are the building blocks of dna? Choices: - prokaryotes - peptides - genes - nucleotides A:
nucleotides
Q: Answer the following question given this paragraph: The measure of how quickly a nucleus decays is given by the half-life of the nucleus. One half-life is the amount of time it will take for half of the radioactive material to decay. Q: What do we call the amount of time it will take for half of the radioactive material to decay? Choices: - one partial-life - one full-life - one quarter-life - one half-life A:
A: one half-life
Question: Answer the following question given this paragraph: Q: Where do the eggs develop? Choices: - the uterus - the glands - the follicles - the ovaries A:
Answer: the ovaries
*Question*
Answer the following question given this paragraph: As stated earlier, not all atoms of a given element are identical. Specifically, the number of neutrons in the nucleus can vary for many elements. As an example, naturally occurring carbon exists in three forms, which are illustrated in Figure below . Q: The number of what subatomic particles can vary between atoms of the same element? Choices: - protons - electrons - neurons - neutrons A:
**Answer**
neutrons
*Question*
Answer the following question given this paragraph: The high points of a transverse wave are called crests, and the low points are called troughs. Q: The high points of a transverse wave are called what? Choices: - ridges - valleys - points - crests A:
**Answer**
crests