Answer the following question given this paragraph: The number of protons per atom is always the same for a given element. However, the number of neutrons may vary, and the number of electrons can change. Q: The number of neutrons and electrons may vary or change in an atom. what happens to the number of protons? Choices: - decreases - increases - depends - remains the same A:
remains the same
(Question)
Answer the following question given this paragraph: Bile salts are bile acids that help to break down fat. Bile acids are made in the liver. When you eat a meal, bile is secreted into the intestine, where it breaks down the fats ( Figure below ). Q: In which organ are bile acids made Choices: - spleen - kidney - gall bladder - liver A:
(Answer)
liver
Ques: Answer the following question given this paragraph: Sending humans to the seafloor is expensive and dangerous. Having to return humans safely to the surface limits what a mission can do. Remotely operated vehicles , or ROVs, allow scientists to study the deep without going to the seafloor. These small vehicles carry cameras and scientific instruments. ROVs were used to study inside the Titanic . This would have been far too dangerous for a manned sub to enter. Scientists control ROVs electronically with sophisticated operating systems. Q: What do scientists use to study the deep without going to the seafloor? Choices: - drill rigs - telescopes - ultrasound machines - remotely operated vehicles A:
Ans: remotely operated vehicles
(Q).
Answer the following question given this paragraph: For all collisions in a closed system, momentum is conserved. In some collisions in a closed system, kinetic energy is conserved. When both momentum and kinetic energy are conserved, the collision is called an elastic collision. Most collisions are inelastic because some amount of kinetic energy is converted to potential energy, usually by raising one of the objects higher (increasing gravitation PE) or by flexing the object. Any denting or other changing of shape by one of the objects will also be accompanied by a loss of kinetic energy. The only commonly seen elastic collisions are those between billiard balls or ball bearings, because these balls do not compress. And, of course, collisions between molecules are elastic if no damage is done to the molecules. Q: When both momentum and kinetic energy are conserved in a closed system, the collision is called what? Choices: - a static collision - a spontaneous collision - an accidental collision - an elastic collision A:
(A).
an elastic collision
Ques:Answer the following question given this paragraph: A field goal kicker lines up to kick a 44 yard (40 m) field goal. He kicks it with an initial velocity of 22 m/s at an angle of . The field goal posts are 3 meters high. Does he make the field goal?. Q: An experiment generates what to support a hypothesis? Choices: - falsehoods - reason - study - evidence A:

Ans:evidence
Ques:Answer the following question given this paragraph: Chromosomes are coiled structures made of DNA and proteins. They form after DNA replicates and are the form in which the genetic material goes through cell division. Chromosomes contain genes, which code for proteins. Q: What do we call coiled structures made of dna and proteins? Choices: - nodes - Organisms - Molecules - chromosomes A:

Ans:
chromosomes