Answer the following question given this paragraph: Phospholipids As its name suggests, a phospholipid is a bond between the glycerol component of a lipid and a phosphorous molecule. In fact, phospholipids are similar in structure to triglycerides. However, instead of having three fatty acids, a phospholipid is generated from a diglyceride, a glycerol with just two fatty acid chains (Figure 2.23). The third binding site on the glycerol is taken up by the phosphate group, which in turn is attached to a polar "head" region of the molecule. Recall that triglycerides are nonpolar and hydrophobic. This still holds for the fatty acid portion of a phospholipid compound. However, the head of a phospholipid contains charges on the phosphate groups, as well as on the nitrogen atom. These charges make the phospholipid head hydrophilic. Therefore, phospholipids are said to have hydrophobic tails, containing the neutral fatty acids, and hydrophilic heads, containing the charged phosphate groups and nitrogen atom. Q: A phospholipid is a bond between the glycerol component of a lipid and what else? Choices: - chlorine molecule - elemental molecule - oxygen molecule - phosphorous molecule A:
phosphorous molecule
(Question)
Answer the following question given this paragraph: An ecosystem is a group of living things and their environment. It is made up of both living and nonliving things. Q: What is defined as a group of living and nonliving things and their environment? Choices: - habitat - degradation - degradation - ecosystem A:
(Answer)
ecosystem
Ques: Answer the following question given this paragraph: According to the cell theory , all living things are made up of cells, which is the structural unit of living organisms, and living cells always come from other living cells. In fact, each living thing begins life as a single cell. Some living things, such as bacteria, remain single-celled. Other living things, including plants and animals, grow and develop into many cells. Your own body is made up of an amazing 100 trillion cells! But even youlike all other living thingsbegan life as a single cell. Q: What is your body made up of? Choices: - skin - millions of elements - energy - trillions of cells A:
Ans: trillions of cells
(Q).
Answer the following question given this paragraph: Aldehydes, ketones, carboxylic acids, esters, and ethers h ave oxygencontaining functional groups. Q: Aldehydes, ketones, carboxylic acids, esters, and ethers all have functional groups containing what element? Choices: - silicon - methane - carbon - oxygen A:
(A).
oxygen
Ques:Answer the following question given this paragraph: Populations gain individuals through births and immigration. They lose individuals through deaths and emigration. These factors together determine how fast a population grows. Q: What do populations gain through births and immigration? Choices: - humans - Over Population - Over Crowding - individuals A:

Ans:individuals
Answer the following question given this paragraph: Vertebrates have a system of muscles attached to the endoskeleton to enable movement. Muscles control movement by alternately contracting (shortening) and relaxing (lengthening). Generally, muscles work together in opposing pairs. Q: In vertebrates, a system of what structures attached to the endoskeleton enables movement? Choices: - nerves - tendons - tissues - muscles A:
muscles