*Question*
Q: How many layers of phospholipids does the cell membrane contain? Read this paragraph and choose the correct option from the provided answers: The cell membrane consists of two layers of phospholipids. It encloses the cytoplasm and controls what enters and leaves the cell. Choices: - four - five - three - two A:
**Answer**
two

*Question*
Q: What shape is the colony of a volvox cell? Read this paragraph and choose the correct option from the provided answers: Volvox Colony. Volvox cells live in a colony shaped like a hollow ball. The cells of the colony may be connected by strands of cytoplasm and can function together. For example, the whole colony can swim from one place to another as one. Choices: - pyramid - coil-shaped - tubular - hollow ball shaped A:
**Answer**
hollow ball shaped

*Question*
Q: Another unit of energy, used widely in the health professions and everyday life, is _______? Read this paragraph and choose the correct option from the provided answers: example, if you hold an ice cube in your hand, the ice cube slowly melts as energy in the form of heat is transferred from your hand to the ice. As your hand loses energy, it starts to feel cold. Because of their interrelationships, energy, work, and heat have the same units. The SI unit of energy, work, and heat is the joule (J). A joule is a tiny amount of energy. For example, it takes about 4 J to warm 1 mL of H2O by 1C. Many processes occur with energy changes in thousands of joules, so the kilojoule (kJ) is also common. Another unit of energy, used widely in the health professions and everyday life, is the calorie (cal). The calorie was initially defined as the amount of energy needed to warm 1 g of H2O by 1C, but in modern times, the calorie is related directly to the joule, as follows: 1 cal = 4.184 J We can use this relationship to convert quantities of energy, work, or heat from one unit to another. The calorie is used in nutrition to express the energy content of foods. However, because a calorie is a rather small quantity, nutritional energies are usually expressed in kilocalories (kcal), also called Calories (capitalized; Cal). For example, a candy bar may provide 120 Cal (nutritional calories) of energy, which is equal to 120,000 cal. Proteins and carbohydrates supply 4 kcal/g, while fat supplies 9 kcal/g. Choices: - carbs - body index - biomass ( cal ) - calorie ( cal ) A:
**Answer**
calorie ( cal )

*Question*
Q: Microwave ovens use radiation to provide food with what kind of energy? Read this paragraph and choose the correct option from the provided answers: Microwave ovens operate by emitting microwave radiation, which is primarily absorbed by water molecules in food. The absorbed radiation is converted to heat through rapid oscillations of polar water molecules, 28. Choices: - magnetic - vibrational - mechanical - heat A:
**Answer**
heat