Q: Answer the following question given this paragraph: Ionic bonds are possible because the elements involved have either donated or accepted one or more electrons. Sodium chloride is formed when each sodium atom donates its single valence electron to a chlorine atom. As a result, both ions have a noble gas configuration, and an attraction is formed between the positive sodium ions and the negative chloride ions. Q: What is formed when each sodium atom donates its single valence electron to a chlorine atom? A:

OPTIONS:
- carbon chloride
- nitrogen chloride
- trioxide chloride
- sodium chloride

A: sodium chloride

input: OPTIONS:
- reduction proteins
- step proteins
- sphere proteins
- matrix proteins Now, answer this question: Answer the following question given this paragraph: Figure 21.4 Viruses can be either complex in shape or relatively simple. This figure shows three relatively complex virions: the bacteriophage T4, with its DNA-containing head group and tail fibers that attach to host cells; adenovirus, which uses spikes from its capsid to bind to host cells; and HIV, which uses glycoproteins embedded in its envelope to bind to host cells. Notice that HIV has proteins called matrix proteins, internal to the envelope, which help stabilize virion shape. (credit "bacteriophage, adenovirus": modification of work by NCBI, NIH; credit "HIV retrovirus": modification of work by NIAID, NIH). Q: Hiv has proteins called what, internal to the envelope, which help stabilize virion shape? A:
A:
output: matrix proteins

Answer the following question given this paragraph: Surface currents are like streams flowing through the surface of the ocean. They are caused mainly by winds. Earth's rotation influences their direction. This is called the Coriolis effect. Surface currents may affect the climate of nearby coasts. Q: What are surface currents mainly caused by? A:

OPTIONS:
- lightning
- waves
- rains
- winds

Answer: winds

Problem: OPTIONS:
- the percent of population
- percent density
- total density
- population density
Q: Answer the following question given this paragraph: Population density just gives the average number of individuals per unit of area or volume. Often, individuals in a population are not spread out evenly. Instead, they may live in clumps or some other pattern (see Figure below ). The pattern may reflect characteristics of the species or its environment. Population distribution describes how the individuals are distributed, or spread throughout their habitat. Q: The average number of individuals per unit of area can be expressed as what? A:
Answer: population density

Problem:OPTIONS:
- Brain
- Breast
- Bone
- leukemia

Answer the following question given this paragraph: Cancer can also be found in children. But childhood cancer is rare. Leukemia is the main type of cancer in children. It makes up about one third of all childhood cancers. It happens when the body makes abnormal white blood cells. Q: Production of abnormal white blood cells occurs in what cancer, which is the most common form in children? A:
****
A: leukemia

Problem:OPTIONS:
- haze
- ambient
- saturation
- humidity

Answer the following question given this paragraph: A: Humidity is a measure of the amount of water vapor in the air. When humidity is high, sweat evaporates more slowly because there is already a lot of water vapor in the air. The slower evaporation rate reduces the potential for evaporative cooling. Q: What is the measurement for the amount of water vapor in the air? A:
****
A:
humidity