input: OPTIONS:
- ribosomes
- protein
- hydrogen
- nitrogen Now, answer this question: Answer the following question given this paragraph: It was known that DNA is composed of nucleotides , each of which contains a nitrogen-containing base, a five-carbon sugar (deoxyribose), and a phosphate group. In these nucleotides, there is one of the four possible bases: adenine (A), guanine (G), cytosine (C), or thymine (T) ( Figure below ). Adenine and guanine are purine bases, and cytosine and thymine are pyrimidine bases. Q: What does the base of a nucleotide within dna consist of? A:
A:
output: nitrogen

Answer the following question given this paragraph: What is the speed of the bird in Exercise 2.4? 6. Acceleration is the change in velocity over time. Given this information, is acceleration a vector or a scalar quantity? Explain. A weather forecast states that the temperature is predicted to be scalar quantity? Explain. Q: Acceleration is defined as the change in what over time? A:

OPTIONS:
- mass
- direction
- volume
- velocity

Answer: velocity

Problem: OPTIONS:
- ostrich
- rhino
- greyhound
- cheetah
Q: Answer the following question given this paragraph: Mammals are noted for the many ways they can move. Some mammals are well known for their speed. The fastest land animal is a mammal, the cheetah. It can race at speeds of up to 112 kilometers (70 miles) per hour. Q: What is the fastest land animal? A:
Answer: cheetah

Problem:OPTIONS:
- magnetic
- solvent
- covalent
- ionic

Answer the following question given this paragraph: The simplest way to define a base is an ionic compound that produces hydroxide ions when dissolved in water. One of the most commonly used bases is sodium hydroxide, illustrated below. Q: The simplest way to define a base is which kind of compound that produces hydroxide ions when dissolved in water? A:
****
A: ionic

Answer the following question given this paragraph: The theory of evolution by natural selection means that the inherited traits of a population change over time. Inherited traits are features that are passed from one generation to the next. For example, your eye color is an inherited trait. You inherited your eye color from your parents. Inherited traits are different from acquired traits , or traits that organisms develop over a lifetime, such as strong muscles from working out ( Figure below ). Q: What type of traits are features that are passed from one generation to the next called? A:
OPTIONS:
- generational traits
- genetic traits
- familial traits
- inherited traits
inherited traits

Answer the following question given this paragraph: Many amino acids can be linked together to form a long chain known as a protein . These linkages are formed when the carboxylic acid of one amino acid reacts with the amine of another to produce an amide (see Figure below ). Q: What is formed when amino acids are linked together in a long chain? A:
OPTIONS:
- amino acid
- hormones
- water molecule
- protein

Answer:
protein