Answer the following question given this paragraph: The immune system naturally becomes less effective as people get older. This is why older people are generally more susceptible to disease. Q: What system gets less effective with age, that generally makes older people more disease susceptible? Choices: - infectious system - reproductive system - nervous system - immune system A:
immune system
Answer the following question given this paragraph: Some maps have a double compass rose. This allows users to make the corrections between magnetic north and true north. An example is a nautical chart that boaters use to chart their positions at sea ( Figure below ). Q: Which feature in maps allows users to make corrections between magnetic north and true north? Choices: - inset - scale - key - double compass rose A:
double compass rose
Q: Answer the following question given this paragraph: You encounter solids and liquids in many forms in your everyday life. Solids, unlike liquids, hold a definite shape. Both solids and liquids hold a definite volume. However, on a molecular level, these two states of matter are quite different. In this lesson we will introduce some of the properties of liquids and solids that affect your interactions with the substances all around you. Q: Both solids and liquids hold a definite what? Choices: - mass - size - shape - volume A:
A: volume
Question: Answer the following question given this paragraph: Placental mammals get their name from the placenta. This is a spongy structure that develops during pregnancy only in placental mammals. You can see where a human placenta forms in Figure below . The placenta sustains the fetus while it grows inside the mother's uterus. It consists of membranes and blood vessels from both mother and fetus. It allows substances to pass between the mother's blood and that of the fetus. The fetus gets oxygen and nutrients from the mother. It passes carbon dioxide and other wastes to the mother. Q: What sustains the fetus while it grows inside the mother's uterus? Choices: - bacteria - endometrium - mitochondria - placenta A:
Answer: placenta
*Question*
Answer the following question given this paragraph: Figure 7.33 Newborn Skull The bones of the newborn skull are not fully ossified and are separated by large areas called fontanelles, which are filled with fibrous connective tissue. The fontanelles allow for continued growth of the skull after birth. At the time of birth, the facial bones are small and underdeveloped, and the mastoid process has not yet formed. Q: The bones of the newborn skull are not fully ossified and are separated by large areas called what? Choices: - sutures - pores - fissures - fontanelles A:
**Answer**
fontanelles
*Question*
Answer the following question given this paragraph: The trillions of red blood cells in blood plasma carry oxygen. Red blood cells contain hemoglobin , a protein with iron that binds with oxygen. Red blood cells are made in the marrow of long bones, rib bones, the skull, and the vertebrae. These cells survive for about 120 days, and then they are destroyed. Mature red blood cells lack a nucleus and other organelles, allowing for more hemoglobin, and therefore more oxygen to be carried by each cell. Q: What is the protein that carries iron that binds with oxygen in red blood cells? Choices: - keratin - potassium - insulin - hemoglobin A:
**Answer**
hemoglobin