Q: What measurement is used to describe the amount of water vapor in the air? Read this paragraph and choose the correct option from the provided answers: Humidity is the amount of water vapor in the air. Relative humidity is the percent of water vapor in the air relative to the total amount the air can hold. The total amount depends on temperature. Choices: - precipitation - barometric pressure - heat - humidity A:
humidity

(Question)
Q: What is the name of the iron-containing oxygen-transport protein in the red blood cells of all vertebrates? Read this paragraph and choose the correct option from the provided answers: Hemoglobin is the iron-containing oxygen-transport protein in the red blood cells of all vertebrates. The hemoglobin molecule is an assembly of four globular protein subunits, each tightly associated with a non-protein heme group. The heme group binds to the iron ion. The most common hemoglobin is hemoglobin A, a tetramer consisting of two alpha and two beta subunits, denoted as 22. Choices: - plasma - platelet - ferric acid - hemoglobin A:
(Answer)
hemoglobin

Ques: Q: In what form is most of the earth's freshwater? Read this paragraph and choose the correct option from the provided answers: Oceans of salt water cover much of Earth's surface. Freshwater is water that contains little or no salt. Most of Earth's freshwater is frozen in ice caps and glaciers. Choices: - gas - liqued - steam - frozen A:
Ans: frozen

(Q).
Q: What is the number of protons in the nucleus? Read this paragraph and choose the correct option from the provided answers: At least by our current understanding, a given atom can be defined by its atomic number and its mass number. The atomic number is the number of protons in the nucleus. All atoms with a given atomic number are the same element, because the chemical properties of an atom are primarily determined by the number of positive charges in its nucleus (and therefore the number of negatively charged electrons needed to make it neutral). The mass number of an atom is equal to the number of protons plus the number of neutrons. Since these particles both have a mass of approximately 1 amu and electrons are much smaller, the mass number is approximately equal to the mass of the atom in units of amu. Choices: - element - metallic number - atomic mass - atomic number A:
(A).
atomic number

Ques:Q: What system is involved in diseases that include type 1 diabetes, rheumatoid arthritis and multiple sclerosis? Read this paragraph and choose the correct option from the provided answers: One example is type 1 diabetes . In this disease, the immune system attacks cells of the pancreas. Other examples are multiple sclerosis and rheumatoid arthritis. In multiple sclerosis , the immune system attacks nerve cells. This causes weakness and pain. In rheumatoid arthritis , the immune system attacks the cells of joints. This causes joint damage and pain. Choices: - circulatory system - nervous system - digestion system - immune system A:

Ans:immune system

Ques:Q: Which layer of the earth is molten? Read this paragraph and choose the correct option from the provided answers: The dense, iron core forms the center of the Earth. Scientists know that the core is metal. The inner core is solid, and the outer core is molten. Here are some of the reasons they know this:. Choices: - the inner core - the metallic core - the mantle - the outer core A:

Ans:
the outer core