*Question*
Answer the following question given this paragraph: The muscular system consists of all the muscles of the body. Does the word muscle make you think of the bulging biceps of a weightlifter, like the man in Figure below ? Muscles such as biceps that move the body are easy to feel and see, but they aren't the only muscles in the human body. Many muscles are deep within the body. They form the walls of internal organs such as the heart and stomach. You can flex your biceps like a body builder but you cannot control the muscles inside you. It's a good thing that they work on their own without any conscious effort your part, because movement of these muscles is essential for survival. Q: What system consists of all the muscles of the body? Choices: - vascular - digestive - endocrine - muscular A:
**Answer**
muscular

*Question*
Answer the following question given this paragraph: Vascular plants evolved leaves to collect sunlight. At first, leaves were tiny and needle-like, which helped reduce water loss. Later, leaves were much larger and broader, so plants could collect more light. Q: Vascular plants evolved what basic structures to collect sunlight? Choices: - flowers - stems - roots - leaves A:
**Answer**
leaves

*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? Choices: - ribosomes - protein - hydrogen - nitrogen A:
**Answer**
nitrogen

*Question*
Answer the following question given this paragraph: Heat involves the transfer of thermal energy between two bodies that are at different temperatures. If you held a flask containing a reaction that releases energy, you would be able to feel the heat being transferred from the reaction into your hand. A process in which heat is released is referred to as exothermic . Conversely, reactions that absorb energy will remove energy from the surroundings, causing the container to feel cold. For example, dissolving ammonium nitrate in water will significantly lower the water temperature. Processes that absorb energy from their surroundings are called endothermic . Q: The process when heat is released is referred to as what? Choices: - geothermal - endothermic - insular - exothermic A:
**Answer**
exothermic