Q: Q: What are the specialized cells within the brain called? Read this paragraph and choose the correct option from the provided answers: Figure 3.9 (a) A typical human brain weighs about 1.5 kg and occupies a volume of roughly 1.1 L. (b) Information is transmitted in brain tissue and throughout the central nervous system by specialized cells called neurons (micrograph shows cells at 1600 magnification). Specialized cells called neurons transmit information between different parts of the central nervous system by way of electrical and chemical signals. Chemical signaling occurs at the interface between different neurons. Choices: - ions - electrons - protons - neurons A:
A: neurons

Q: Q: What term is used to describe viruses that live in a dormant state inside the body? Read this paragraph and choose the correct option from the provided answers: Some viruses live in a dormant state inside the body. This is called latency . For example, the virus that causes chicken pox may infect a young child and cause the short-term disease chicken pox. Then the virus may remain latent in nerve cells within the body for decades. The virus may re-emerge later in life as the disease called shingles. In shingles, the virus causes painful skin rashes with blisters (see Figure below ). Choices: - potential - hidden - dorment - latency A:
A: latency

Q: Q: Which division of the peripheral nervous system carries messages from sense organs and internal organs to the central nervous system? Read this paragraph and choose the correct option from the provided answers: All other nervous tissue in the body makes up the peripheral nervous system, which has two major divisions. The sensory division carries messages from sense organs and internal organs to the central nervous system. The motor division carries messages from the central nervous system to muscles, internal organs, and glands throughout the body. The motor division is further divided into parts that control involuntary or voluntary responses. Choices: - vascular division - neural division - extrasensory division - sensory division A:
A: sensory division

Q: Q: What is the primary component of steel alloys? Read this paragraph and choose the correct option from the provided answers: Steels are a very important class of alloys. The many types of steels are primarily composed of iron, with various amounts of the elements carbon, chromium, manganese, nickel, molybdenum, and boron. Steels are widely used in building construction because of their strength, hardness, and resistance to corrosion. Most large modern structures like skyscrapers and stadiums are supported by a steel skeleton (see Figure below ). Choices: - carbon - titanium - alluminum - iron A:
A: iron