Answer the following question given this paragraph: A polyatomic ion is an ion composed of more than one atom. For example, the ammonium ion consists of one nitrogen atom and four hydrogen atoms. Together, they comprise a single ion with a 1+ charge and a formula of NH 4 + . The carbonate ion consists of one carbon atom and three oxygen atoms, and it carries an overall charge of 2. The formula of the carbonate ion is CO 3 2- . The atoms of a polyatomic ion are tightly bonded together, so the entire ion behaves as a single unit. Figure below shows several models, and Table below lists many of the most common polyatomic ions. Q: A polyatomic ion is an ion composed of more than one what? Choices: - pair bond - neutron - nucleus - atom A:
atom
(Question)
Answer the following question given this paragraph: Human genetics is the field of biology that focuses on the study of inheritance in humans. Q: What is the field of biology that focuses on the study of inheritance in humans? Choices: - generational biology - computational biology - relational biology - human genetics A:
(Answer)
human genetics
Ques: Answer the following question given this paragraph: Q: Crowding and resource limitation can have a profound effect on the rate of what? Choices: - population stagnation - technology advances - cultural advances - population growth A:
Ans: population growth
(Q).
Answer the following question given this paragraph: Binary Acids Some compounds containing hydrogen are members of an important class of substances known as acids. The chemistry of these compounds is explored in more detail in later chapters of this text, but for now, it will suffice to note that many acids release hydrogen ions, H+, when dissolved in water. To denote this distinct chemical property, a mixture of water with an acid is given a name derived from the compound's name. If the compound is a binary acid (comprised of hydrogen and one other nonmetallic element): 1. The word "hydrogen" is changed to the prefix hydro2. The other nonmetallic element name is modified by adding the suffix -ic 3. The word "acid" is added as a second word. Q: Some compounds containing hydrogen are members of an important class of substances known as what? Choices: - proteins - ions - bases - acids A:
(A).
acids
Ques:Answer the following question given this paragraph: Dynamite was invented by Alfred Nobel in 1866. Nitroglycerin, a very unstable explosive, was already known. Nobel mixed the nitroglycerin with silica to stabilize it and form a solid material. He made a fortune with this discovery and established the Nobel Foundation, which funds the Nobel Prizes every year. Q: Who invented dynamite in 1866? Choices: - Louis Pasteur - Madame Curie - Albert Einstein - alfred nobel A:

Ans:alfred nobel
Answer the following question given this paragraph: Lipids Lipids include a diverse group of compounds that are united by a common feature. Lipids are hydrophobic ("waterfearing"), or insoluble in water, because they are nonpolar molecules. This is because they are hydrocarbons that include only nonpolar carbon-carbon or carbon-hydrogen bonds. Lipids perform many different functions in a cell. Cells store energy for long-term use in the form of lipids called fats. Lipids also provide insulation from the environment for plants and animals (Figure 2.17). For example, they help keep aquatic birds and mammals dry because of their water-repelling nature. Lipids are also the building blocks of many hormones and are an important constituent of the plasma membrane. Lipids include fats, oils, waxes, phospholipids, and steroids. Q: In what form of lipids cells store energy for long-term use? Choices: - meat - nuts - treasure - fat A:
fat