Q: Which bone is derived from the fusion of four very small coccygeal vertebrae? Read this paragraph and choose the correct option from the provided answers: The body can also respond effectively to short-term exposure to cold. One response to cold is shivering, which is random muscle movement that generates heat. Another response is increased breakdown of stored energy to generate heat. When that energy reserve is depleted, however, and the core temperature begins to drop significantly, red blood cells will lose their ability to give up oxygen, denying the brain of this critical component of ATP production. This lack of oxygen can cause confusion, lethargy, and eventually loss of consciousness and death. The body responds to cold by reducing blood circulation to the extremities, the hands and feet, in order to prevent blood from cooling there and so that the body's core can stay warm. Even when core body temperature remains stable, however, tissues exposed to severe cold, especially the fingers and toes, can develop frostbite when blood flow to the extremities has been much reduced. This form of tissue damage can be permanent and lead to gangrene, requiring amputation of the affected region. Choices: - cranium - clavicle - femur - coccyx A:
coccyx

(Question)
Q: Which disease does the bacteria salmonella cause in humans? Read this paragraph and choose the correct option from the provided answers: The organisms are bacteria called Salmonella. If the word Salmonella rings a bell, that's probably because Salmonella causes human diseases such as food poisoning. Many other types of bacteria also cause human diseases. But not all bacteria are harmful to people. In fact, we could not survive without many of the trillions of bacteria that live in or on the human body. You will learn why when you read this chapter. Choices: - water poisioning - blood poisoning - skin poisoning - food poisoning A:
(Answer)
food poisoning

Ques: Q: What consists of structures that produce eggs and secrete female sex hormones? Read this paragraph and choose the correct option from the provided answers: The female reproductive system consists of structures that produce eggs and secrete female sex hormones. They also provide a site for fertilization and enable the development and birth of a fetus. They include the vagina, uterus, ovaries, and fallopian tubes. Choices: - male reproductive system - female neural system - asexual reproductive system - female reproductive system A:
Ans: female reproductive system

(Q).
Q: The theory of evolution by what (and other processes) explains both the diversity of organisms and how populations of organisms change over time? Read this paragraph and choose the correct option from the provided answers: Biology has only a few over arching theories. One of these, the Cell Theory of Life, explains the historic continuity of organisms, while the Theory of Evolution by Natural Selection (and other processes), explains both the diversity of organisms and how populations of organisms change over time. Finally, the Physicochemical Theory of Life explains how it is that organisms can display their remarkable properties without violating the laws that govern all physical and chemical systems.40 What is life, exactly? Clearly, if we are going to talk about biology, and organisms and cells and such, we have to define exactly what we mean by life. This raises a problem peculiar to biology as a science. We cannot define life generically because we know of only one type of life. We do not know whether this type of life is the only type of life possible or whether radically different forms of life exist elsewhere in the universe or even on Earth, in as yet to be recognized forms. While you might think that we know of many different types of life, from mushrooms to whales, from humans to the bacterial communities growing on the surfaces of our teeth (that is what dental plaque is, after all), we will discover that the closer we look the more these different "types of life" are in fact all versions of a common underlying motif, they represent versions of a single type of life. Based on their common chemistry, molecular composition, cellular structure, and the way that they encode, read, and use hereditary information in the form of molecules of deoxyribonucleic acid (DNA), all topics we will consider in depth later on, there is no reasonable doubt that all organisms are related, they are descended from a common ancestor. We cannot currently answer the question of whether the origin of life is a simple, likely, and predictable event given the conditions that existed on the Earth when life first arose, or whether it is an extremely rare and unlikely event. In the absence of empirical data, one can question whether scientists... Choices: - natural evolution - characteristic selection - genocide - natural selection A:
(A).
natural selection

Ques:Q: In an acidic medium, add which ions to balance? Read this paragraph and choose the correct option from the provided answers: Now the hydrogen atoms need to be balanced. In an acidic medium, add hydrogen ions to balance . In this example, fourteen H + ions will be added to the reactant side. Choices: - helium - magnesium - calcium - hydrogen A:

Ans:hydrogen

Question: Q: How does deeper material cause convection in the mantle? Read this paragraph and choose the correct option from the provided answers: Not long after Wegener's death, scientists recognized that there is convection in the mantle. Deeper material is hotter and so it rises. Near the surface, it becomes cooler and denser so it sinks. This creates a convection cell in the mantle. Choices: - remains stable - folds - sinks then rises - rises then sinks A:
Answer:
rises then sinks