Answer the following question given this paragraph: The plasma membrane forms a barrier between the cytoplasm inside the cell and the environment outside the cell. It protects and supports the cell and also controls everything that enters and leaves the cell. It allows only certain substances to pass through, while keeping others in or out. The ability to allow only certain molecules in or out of the cell is referred to as selective permeability or semipermeability. To understand how the plasma membrane controls what crosses into or out of the cell, you need to know its composition. Q: The ability for a plasma membrane to only allow certain molecules in or out of the cell is referred to as what? Choices: - periodic permeability - total permeability - moderate permeability - selective permeability A:
selective permeability
(Question)
Answer the following question given this paragraph: Sponges are a source of food for many species of fish. Because sponges are anchored to a reef or rock, they can't run away from predators. However, their sharp spicules provide some defense. They also produce toxins that may poison predators that try to eat them. Q: Where are sponges most likely anchored to? Choices: - sea floor - sand - beaches - reef or rock A:
(Answer)
reef or rock
Ques: Answer the following question given this paragraph: Chordates are defined by a set of four characteristics that are shared by these animals at some point during their development. In some chordates, all four traits are present in the adult animal and serve important functions. However, in many chordates, including humans, some traits are present only during the embryonic stage. After that, these traits may disappear. Q: Chordates are defined by a set of four characteristics that are shared by these animals at some point during their? Choices: - death - response - birth - development A:
Ans: development
(Q).
Answer the following question given this paragraph: Saliva Saliva is essentially (95.5 percent) water. The remaining 4.5 percent is a complex mixture of ions, glycoproteins, enzymes, growth factors, and waste products. Perhaps the most important ingredient in salvia from the perspective of digestion is the enzyme salivary amylase, which initiates the breakdown of carbohydrates. Food does not spend enough time in the mouth to allow all the carbohydrates to break down, but salivary amylase continues acting until it is inactivated by stomach acids. Bicarbonate and phosphate ions function as chemical buffers, maintaining saliva at a pH between 6.35 and 6.85. Salivary mucus helps lubricate food, facilitating movement in the mouth, bolus formation, and swallowing. Saliva contains immunoglobulin A, which prevents microbes from penetrating the epithelium, and lysozyme, which makes saliva antimicrobial. Saliva also contains epidermal growth factor, which might have given rise to the adage "a mother's kiss can heal a wound. " Each of the major salivary glands secretes a unique formulation of saliva according to its cellular makeup. For example, the parotid glands secrete a watery solution that contains salivary amylase. The submandibular glands have cells similar to those of the parotid glands, as well as mucus-secreting cells. Therefore, saliva secreted by the submandibular glands also contains amylase but in a liquid thickened with mucus. The sublingual glands contain mostly mucous cells, and they secrete the thickest saliva with the least amount of salivary amylase. Q: Arguably the most important ingredient in saliva for digestion is a type of what, which initiates the breakdown of carbohydrates? Choices: - amino - genes - fatty - enzyme A:
(A).
enzyme
Ques:Answer the following question given this paragraph: Features of continents include mountain ranges, plateaus, and plains. Q: Mountain ranges, plateaus, and plains are features of what large landforms? Choices: - Countries - planets - States - continents A:

Ans:continents
Ques: Answer the following question given this paragraph: Bacteria are often used to make cheese from milk. But making foods is not the only beneficial role of bacteria. For example, they also play an essential role in your gut!. Q: Bacteria are often used to make cheese from what? Choices: - meat - egg - water - milk A:
Ans:
milk