Answer the following question given this paragraph: Chemistry in Everyday Life Measuring Blood Pressure Blood pressure is measured using a device called a sphygmomanometer (Greek sphygmos = "pulse"). It consists of an inflatable cuff to restrict blood flow, a manometer to measure the pressure, and a method of determining when blood flow begins and when it becomes impeded (Figure 9.6). Since its invention in 1881, it has been an essential medical device. There are many types of sphygmomanometers: manual ones that require a stethoscope and are used by medical professionals; mercury ones, used when the most accuracy is required; less accurate mechanical ones; and digital ones that can be used with little training but that have limitations. When using a sphygmomanometer, the cuff is placed around the upper arm and inflated until blood flow is completely blocked, then slowly released. As the heart beats, blood forced through the arteries causes a rise in pressure. This rise in pressure at which blood flow begins is the systolic pressurethe peak pressure in the cardiac cycle. When the cuff's pressure equals the arterial systolic pressure, blood flows past the cuff, creating audible sounds that can be heard using a stethoscope. This is followed by a decrease in pressure as the heart's ventricles prepare for another beat. As cuff pressure continues to decrease, eventually sound is no longer heard; this is the diastolic pressurethe lowest pressure (resting phase) in the cardiac cycle. Blood pressure units from a sphygmomanometer are in terms of millimeters of mercury (mm Hg). Q: What is used to measure blood pressure? Choices: - anemometer - spectrometer - barometer - sphygmomanometer A:
sphygmomanometer
Answer the following question given this paragraph: Macroevolution refers to larger evolutionary changes that result in new species. Q: What term refers to larger evolutionary changes that result in new species? Choices: - Microevolution - Potential evolution - substantial evolution - macroevolution A:
macroevolution
Q: Answer the following question given this paragraph: Compact bone makes up the dense outer layer of bones. Q: What makes up the dense outer layer of bones? Choices: - marrow - scales - cartilage - compact bone A:
A: compact bone
Question: Answer the following question given this paragraph: The Sun is made almost entirely of the elements hydrogen and helium. The Sun has no solid material. Most atoms in the Sun exist as plasma . Plasma is superheated gas with an electrical charge. Because the Sun is made of gases, it does not have a defined outer boundary. Like Earth, the Sun has an internal structure. The inner three layers make up what we would actually call "the Sun. ". Q: What two elements primarily make up the sun? Choices: - oxygen and hydrogen - nitrogen and argon - calcium and helium - hydrogen and helium A:
Answer: hydrogen and helium
*Question*
Answer the following question given this paragraph: The symbol represents an electron whose charge corresponds to and since it has no nucleons, . It must be carefully noted that the electron released during beta decay is NOT an orbital electron but an electron whose origin was in the nucleus. The process has one neutron becoming one proton and one electron and the electron being emitted as a beta particle. Since a neutron has been lost AND a proton has been gained, the mass number does not change. The atomic number, however, has increased one due to the gain of a proton. Therefore, as a result of beta decay, the daughter product will have the same mass number as the parent and an atomic number one greater than the parent. Q: The electron released during beta decay is not an orbital electron but an electron whose origin was where? Choices: - outside the nucleus - connected to the nucleus - orbiting the nucleus - in the nucleus A:
**Answer**
in the nucleus
(Question)
Answer the following question given this paragraph: Q: When do cells acquire different identities in an ordered spatial arrangement? Choices: - during mitosis - larval stage - before morphogenesis - during morphogenesis A:
(Answer)
during morphogenesis