Answer the following question given this paragraph: The arthropod exoskeleton consists of several layers of cuticle. The exoskeleton prevents water loss and gives support and protection. It also acts as a counterforce for the contraction of muscles. The exoskeleton doesn't grow as the animal grows. Therefore, it must be shed and replaced with a new one periodically through life. This is called molting . Q: What part of an animal helps to prevent water loss and gives support and protection? Choices: - membrane - cuticle - backbone - exoskeleton A:
exoskeleton
Answer the following question given this paragraph: 31 Respiratory system In humans and other animals, for example, the anatomical features of the respiratory system include airways, lungs, and the respiratory muscles. Other animals, such as insects, have respiratory systems with very simple anatomical features, and in amphibians even the skin plays a vital role in gas exchange. Plants also have respiratory systems but the directionality of gas exchange can be opposite to that in animals. The respiratory system in plants also includes anatomical features such as holes on the undersides of leaves known as stomata. In mammals, the diaphragm divides the body cavity into the abdominal cavity: contains the viscera (e. , stomach and intestines). Q: The airway and the lungs are part of what organ system? Choices: - coronary - pulmonary - digestive - respiratory A:
respiratory
Q: Answer the following question given this paragraph: Some fossils are created when minerals replace the organic material. This is called permineralization. Q: What is it called when minerals replace the organic material to create fossils? Choices: - carbonization - spongin - petrification - permineralization A:
A: permineralization
Question: Answer the following question given this paragraph: Acetyl-CoA is formed from the breakdown of carbohydrates, lipids, and proteins. It is used in many biochemical pathways. Q: Acetyl-coa is formed from the breakdown of carbohydrates, lipids, and what else? Choices: - hormones - acids - hydrocarbons - proteins A:
Answer: proteins
*Question*
Answer the following question given this paragraph: A cell that does not have a rigid cell wall, such as a red blood cell, will swell and lyse (burst) when placed in a hypotonic solution. Cells with a cell wall will swell when placed in a hypotonic solution, but once the cell is turgid (firm), the tough cell wall prevents any more water from entering the cell. When placed in a hypertonic solution, a cell without a cell wall will lose water to the environment, shrivel, and probably die. In a hypertonic solution, a cell with a cell wall will lose water too. The plasma membrane pulls away from the cell wall as it shrivels, a process called plasmolysis . Animal cells tend to do best in an isotonic environment, plant cells tend to do best in a hypotonic environment. This is demonstrated in Figure below . Q: A red blood cell will swell and burst when placed in a? Choices: - acidic solution - exothermic solution - dissolved solution - hypotonic solution A:
**Answer**
hypotonic solution
(Question)
Answer the following question given this paragraph: A nonelectrolyte is a compound that does not conduct an electric current in either aqueous solution or in the molten state. Many molecular compounds, such as sugar or ethanol, are nonelectrolytes. When these compounds dissolve in water, they do not produce ions. The Figure below illustrates the difference between an electrolyte and a nonelectrolyte. Q: What term is used to describe a compound that does not conduct an electric current in either aqueous solution or in the molten state? Choices: - kilocalorie - porous - xerophyte - nonelectrolyte A:
(Answer)
nonelectrolyte