Answer the following question given this paragraph: All the cells of your body need oxygen, which they get from red blood cells. Red blood cells, in turn, get oxygen in the lungs. The lungs are the main organs of the respiratory system. The respiratory system is the body system that exchanges gases with the outside air. It brings air containing oxygen into the body for the cells. It also releases carbon dioxide from the cells into the air. Q: Where do the cells in your body get oxygen from? Choices: - white blood cells - the digestive system - pores - red blood cells A:
red blood cells
Answer the following question given this paragraph: Freezing is the process in which a liquid changes to a solid. It occurs when a liquid cools to a point at which its particles no longer have enough energy to overcome the force of attraction between them. Q: What is the process in which a liquid changes to a solid? Choices: - condensation - boiling - melting - freezing A:
freezing
Q: Answer the following question given this paragraph: on a daily basis as a preventive measure. However, aspirin can also lead to serious side effects, including increasing the risk of ulcers. A patient is well advised to consult a physician before beginning any aspirin regimen. A class of drugs collectively known as thrombolytic agents can help speed up the degradation of an abnormal clot. If a thrombolytic agent is administered to a patient within 3 hours following a thrombotic stroke, the patient's prognosis improves significantly. However, some strokes are not caused by thrombi, but by hemorrhage. Thus, the cause must be determined before treatment begins. Tissue plasminogen activator is an enzyme that catalyzes the conversion of plasminogen to plasmin, the primary enzyme that breaks down clots. It is released naturally by endothelial cells but is also used in clinical medicine. New research is progressing using compounds isolated from the venom of some species of snakes, particularly vipers and cobras, which may eventually have therapeutic value as thrombolytic agents. Q: Snake venom may join the class of drugs collectively known as thrombolytic agents, which can help speed up the degradation of an abnormal what? Choices: - brain - bleed - bone - clot A:
A: clot
Question: Answer the following question given this paragraph: Evolution means change over time. Darwin's theory of evolution says that organisms change over time ( Figure below ). Evolution is seen in the fossil record. It is seen in the way organisms develop. Evolution is evident in the geographic locations where organism are found. It is evident in the genes of living organisms. Evolution has a mechanism called natural selection . The organism that is best suited to its environment is most likely to survive. Evolution is described in the chapter Life on Earth . Q: Organism's changing over time is called? Choices: - generation - heterogenicity - variation - evolution A:
Answer: evolution
*Question*
Answer the following question given this paragraph: Early in the development of a human fetus, the skeleton is made entirely of cartilage. The relatively soft cartilage gradually turns into hard bone through ossification . This is a process in which mineral deposits replace cartilage. As shown in Figure below , ossification of long bones, which are found in the arms and legs, begins at the center of the bones and continues toward the ends. By birth, several areas of cartilage remain in the skeleton, including the ends of the long bones. This cartilage grows as the long bones grow, so the bones can keep increasing in length during childhood. Q: While still an early fetus, what is the skeleton made of? Choices: - ligament - membrane - gel - cartilage A:
**Answer**
cartilage
Q: Answer the following question given this paragraph: A liquid that can interact with glass displays the property of adhesion . The attraction of the glass to the molecules is stronger than the attraction of the liquid molecules to each other. The liquid molecules are pulled up due to their stronger attraction to the glass. Water is one liquid that displays this property. Q: What property does liquid display when it interacts with glass? Choices: - property of repulsion - property of diffusion - property of oxidize - property of adhesion A:
A: property of adhesion