Answer the following question given this paragraph: 41.4 | Nitrogenous Wastes By the end of this section, you will be able to: Compare and contrast the way in which aquatic animals and terrestrial animals can eliminate toxic ammonia from their systems Compare the major byproduct of ammonia metabolism in vertebrate animals to that of birds, insects, and reptiles Of the four major macromolecules in biological systems, both proteins and nucleic acids contain nitrogen. During the catabolism, or breakdown, of nitrogen-containing macromolecules, carbon, hydrogen, and oxygen are extracted and stored in the form of carbohydrates and fats. Excess nitrogen is excreted from the body. Nitrogenous wastes tend to form toxic ammonia, which raises the pH of body fluids. The formation of ammonia itself requires energy in the form of ATP and large quantities of water to dilute it out of a biological system. Animals that live in aquatic environments tend to release ammonia into the water. Animals that excrete ammonia are said to be ammonotelic. Terrestrial organisms have evolved other mechanisms to excrete nitrogenous wastes. The animals must detoxify ammonia by converting it into a relatively nontoxic form such as urea or uric acid. Mammals, including humans, produce urea, whereas reptiles and many terrestrial. Q: What term is used to describe animals that excrete ammonia? Choices: - spirogyra - ammonstand - xerophyte - ammonotelic A:
ammonotelic
(Question)
Answer the following question given this paragraph: Scientists are regular people who chose to study science. They are experts in done or more fields of science. Q: What are people called that choose to study science? Choices: - engineers - lab technicians - doctors - scientists A:
(Answer)
scientists
Ques: Answer the following question given this paragraph: We know that the Universe is expanding. Astronomers have wondered if it is expanding fast enough to escape the pull of gravity. Would the Universe just expand forever? If it could not escape the pull of gravity, would it someday start to contract? This means it would eventually get squeezed together in a big crunch. This is the opposite of the Big Bang. Q: Astronomers have wondered if the universe is expanding fast enough to escape the pull of what? Choices: - kinetic energy - Coreolis effect - light - gravity A:
Ans: gravity
(Q).
Answer the following question given this paragraph: Volcanic mountain ranges form when oceanic crust subducts into the mantle at convergent plate boundaries. The Andes Mountains are a chain of coastal volcanic mountains. They are forming as the Nazca plate subducts beneath the South American plate ( Figure below ). Q: What forms when oceanic crust subducts into the mantle at convergent plate boundaries? Choices: - tsunamis - glaciers - coral - volcanic mountain ranges A:
(A).
volcanic mountain ranges
Ques:Answer the following question given this paragraph: Changes of state are physical changes in matter. They are reversible changes that do not change matter's chemical makeup or chemical properties. For example, when fog changes to water vapor, it is still water and can change back to liquid water again. Q: What are reversible physical changes in matter called? Choices: - chemical change - alterations - transformations - changes of state A:

Ans:changes of state
Answer the following question given this paragraph: When homologous chromosomes pair up during meiosis I, crossing-over can occur. Crossing-over is the exchange of genetic material between non-sister chromatids of homologous chromosomes. It results in new combinations of genes on each chromosome. Q: What is the term for the exchange of genetic material between non-sister chromatids of homologous chromosomes? Choices: - inheritance - asexual reproduction - meiosis - crossing-over A:
crossing-over