Ques: Q: What substances digest the food in the vacuole of an ingestive protist? Read this paragraph and choose the correct option from the provided answers: Ingestive protists ingest, or engulf, bacteria and other small particles. They extend their cell wall and cell membrane around the food item, forming a food vacuole. Then enzymes digest the food in the vacuole. Choices: - carbohydrates - lipids - hormones - enzymes A:
Ans: enzymes

Ques: Q: When two skateboarders push against each other what happens? Read this paragraph and choose the correct option from the provided answers: Look at the skateboarders in Figure below . When they push against each other, it causes them to move apart. The harder they push together, the farther apart they move. This is an example of Newton's third law of motion. Choices: - they stick together - they rise - they magnetize - they move apart A:
Ans: they move apart

Ques: Q: Which common element is the most found in living organisms? Read this paragraph and choose the correct option from the provided answers: Carbon is one of the most common elements found in living organisms. Chains of carbon molecules form the backbones of many organic molecules, such as carbohydrates, proteins, and lipids. Carbon is constantly cycling between living organisms and the atmosphere ( Figure below ). The cycling of carbon occurs through the carbon cycle . Choices: - hydrogen - oxygen - monoxide - carbon A:
Ans: carbon

Ques: Q: What layered form of carbon is used as a lubricant and in pencils? Read this paragraph and choose the correct option from the provided answers: Graphite is a form of carbon in which carbon atoms are arranged in layers. Bonds are strong between carbon atoms within each layer but relatively weak between atoms in different layers. The weak bonds between layers allow the layers to slide over one another. This makes graphite relatively soft and slippery. It is used as a lubricant. It also makes up the "lead" in pencils. Choices: - carbonite - copper - lead - graphite A:
Ans:
graphite