Ques: Q: Matching donor and recipient blood types is important because different blood types have different types of what? Read this paragraph and choose the correct option from the provided answers: The ABO blood group system is important if a person needs a blood transfusion. A blood transfusion is the process of putting blood or blood products from one person into the circulatory system of another person. The blood type of the recipient needs to be carefully matched to the blood type of the donor. That's because different blood types have different types of antibodies, or proteins, released by the blood cells. Antibodies attack strange substances in the body. This is a normal part of your immune response, which is your defense against disease. Choices: - antigens - charges - coagulants - antibodies A:
Ans: antibodies

Ques: Q: What is the term for coiled structures made of dna and proteins? Read this paragraph and choose the correct option from the provided answers: Chromosomes are coiled structures made of DNA and proteins. Chromosomes are the form of the genetic material of a cell during cell division. During other phases of the cell cycle, DNA is not coiled into chromosomes. Instead, it exists as a grainy material called chromatin . Choices: - neutrons - nodes - platelets - chromosomes A:
Ans: chromosomes

Ques: Q: How do humans learn behaviors? Read this paragraph and choose the correct option from the provided answers: Humans learn behaviors through conditioning, as well. A young child might learn to put away his toys by being rewarded with a bedtime story. An older child might learn to study for tests in school by being rewarded with better grades. Can you think of behaviors you have learned by being rewarded for them?. Choices: - Aural pressure - Verbal pressure - pressure - conditioning A:
Ans: conditioning

Ques: Q: The point in front of a mirror where the reflected rays intersect is known as what? Read this paragraph and choose the correct option from the provided answers: Some mirrors have a curved rather than flat surface. Curved mirrors can be concave or convex. A concave mirror is shaped like the inside of a bowl. This type of mirror forms either real or virtual images, depending on where the object is placed relative to the focal point. The focal point is the point in front of the mirror where the reflected rays intersect. You can see how concave mirrors form images in Figure below and in the interactive animation at the URL below. The animation allows you to move an object to see how its position affects the image. Concave mirrors are used behind car headlights. They focus the light and make it brighter. They are also used in some telescopes. Choices: - reflective point - boundary point - periodic point - focal point A:
Ans:
focal point