Answer the following question given this paragraph: We see many objects out in space that emit light. This matter is contained in stars, and the stars are contained in galaxies. Scientists think that stars and galaxies make up only a small part of the matter in the universe. The rest of the matter is called dark matter . Q: Scientists think that stars and galaxies make up only a small part of the matter in the universe. what is the rest of the matter called? Choices: - typical matter - light matter - cold matter - dark matter A:
dark matter
(Question)
Answer the following question given this paragraph: The nervous system isn't the only message-relaying system of the human body. The endocrine system also carries messages. The endocrine system is a system of glands that release chemical messenger molecules into the bloodstream. The messenger molecules are hormones. Hormones act slowly compared with the rapid transmission of electrical messages by the nervous system. They must travel through the bloodstream to the cells they affect, and this takes time. On the other hand, because endocrine hormones are released into the bloodstream, they travel throughout the body. As a result, endocrine hormones can affect many cells and have body-wide effects. Q: What do you call the system of glands that release chemical messenger molecules into the bloodstream? Choices: - homeostasis system - nervous system - limbic system - endocrine system A:
(Answer)
endocrine system
Ques: Answer the following question given this paragraph: Once we reach neon, a noble gas, all of the 2p orbitals will be completely full. Neon has a configuration of 1s 2 2s 2 2p 6 . Any further electrons will need to go in the next highest energy orbital, which would be the 3s orbital. Q: Neon is an example of what kind of gas? Choices: - ideal - inert - natural - noble A:
Ans: noble
(Q).
Answer the following question given this paragraph: Matter is anything that has mass and takes up space. Matter is everywhere. The air we breathe, the water we drink, the food we eat, and the ground we walk on are all comprised of matter. Matter can take on a variety of different forms which all have a variety of different properties. In this chapter, we will introduce the characteristics of matter and study how these characteristics vary in different types of matter. Q: Anything that has mass and takes up space is considered what? Choices: - energy - light - power - matter A:
(A).
matter
Ques:Answer the following question given this paragraph: Small nonpolar molecules can easily diffuse across the cell membrane. However, due to the hydrophobic nature of the lipids that make up cell membranes, polar molecules (such as water) and ions cannot do so. Instead, they diffuse across the membrane through transport proteins. A transport protein completely spans the membrane, and allows certain molecules or ions to diffuse across the membrane. Channel proteins, gated channel proteins, and carrier proteins are three types of transport proteins that are involved in facilitated diffusion. Q: Due to the __________ nature of the lipids that make up cell membranes, polar molecules (such as water) and ions cannot easily diffuse across the cell membrane. Choices: - hydrophylic - saturated - catalytic - hydrophobic A:

Ans:hydrophobic
Ques: Answer the following question given this paragraph: Summary 20.1 Hydrocarbons Strong, stable bonds between carbon atoms produce complex molecules containing chains, branches, and rings. The chemistry of these compounds is called organic chemistry. Hydrocarbons are organic compounds composed of only carbon and hydrogen. The alkanes are saturated hydrocarbonsthat is, hydrocarbons that contain only single bonds. Alkenes contain one or more carbon-carbon double bonds. Alkynes contain one or more carbon-carbon triple bonds. Aromatic hydrocarbons contain ring structures with delocalized electron systems. Q: Strong, stable bonds between carbon atoms produce complex molecules containing chains, branches, and rings; the chemistry of these compounds is called what? Choices: - animal chemistry - inorganic chemistry - nuclear chemistry - organic chemistry A:
Ans:
organic chemistry