Ques: Answer the following question given this paragraph: Savannas Savannas are grasslands with scattered trees, and they are found in Africa, South America, and northern Australia (Figure 20.18). Savannas are hot, tropical areas with temperatures averaging from 24oC 29oC (75oF 84oF) and an annual rainfall of 51127 cm (2050 in). Savannas have an extensive dry season and consequent fires. As a result, scattered in the grasses and forbs (herbaceous flowering plants) that dominate the savanna, there are relatively few trees (Figure 20.20). Since fire is an important source of disturbance in this biome, plants have evolved well-developed root systems that allow them to quickly re-sprout after a fire. Q: What type of landscape has grasslands with scattered trees, are hot and have extensive dry seasons along with fire? Choices: - deserts - arctic - tundra - savannas A:
Ans: savannas

Ques: Answer the following question given this paragraph: Type 1 diabetes occurs when the immune system attacks normal cells of the pancreas. Since the cells in the pancreas are damaged, the pancreas cannot make insulin. Type 1 diabetes usually develops in childhood or adolescence. Q: Type 1 diabetes results in the pancreas not being able to make what ? Choices: - hemoglobin - sugar - glucose - insulin A:
Ans: insulin

Ques: Answer the following question given this paragraph: 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 ). Q: What term is used to describe viruses that live in a dormant state inside the body? Choices: - potential - hidden - dorment - latency A:
Ans: latency

Ques: Answer the following question given this paragraph: Quaternary structure is a larger assembly of several polypeptide chains, now referred to as subunits of the protein. The quaternary structure is stabilized by the same interactions as the tertiary structure. Complexes of two or more polypeptides are called multimers. Specifically, a dimer contains two subunits, a trimer contains three subunits, and a tetramer contains four subunits. Q: What structure is a larger assembly of several polypeptide chains that are now referred to as subunits of the protein? Choices: - digital structure - geological structure - pyramid structure - quaternary structure A:
Ans:
quaternary structure