Answer the following question given this paragraph: More than 1000 different enzymes are necessary for human life. Many enzymes are needed for the digestion of food. Two examples are amylase and pepsin. Both are described in the Figure below . Q: Amylase and pepsin are examples of enzymes needed for what process? Choices: - fermentation - absorption - filtration - digestion A:
digestion
Answer the following question given this paragraph: Eukaryotic cells have other organelles besides the nucleus. The only organelles in a prokaryotic cell are ribosomes. Q: What are the only organelles that prokaryotic cells have? Choices: - nuclei - chloroplasts - fibroblasts - ribosomes A:
ribosomes
Q: Answer the following question given this paragraph: The development of modern lasers has opened many doors to both research and applications. A laser beam was used to measure the distance from the Earth to the moon. Lasers are important components of CD players. As the image above illustrates, lasers can provide precise focusing of beams to selectively destroy cancer cells in patients. The ability of a laser to focus precisely is due to high-quality crystals that help give rise to the laser beam. A variety of techniques are used to manufacture pure crystals for use in lasers. Q: What was used to measure the distance between the earth and the moon? Choices: - telescope - yardstick - ultrasound - laser beam A:
A: laser beam
Question: Answer the following question given this paragraph: The nucleus of many cells also contains a non-membrane bound organelle called a nucleolus , shown in Figure below . The nucleolus is mainly involved in the assembly of ribosomes. Ribosomes are organelles made of protein and ribosomal RNA (rRNA), and they build cellular proteins in the cytoplasm. The function of the rRNA is to provide a way of decoding the genetic messages within another type of RNA (called mRNA), into amino acids. After being made in the nucleolus, ribosomes are exported to the cytoplasm, where they direct protein synthesis. Q: What are organelles made of protein and ribosomal rna (rrna)? Choices: - electrons - carbons - chromosomes - ribosomes A:
Answer: ribosomes
*Question*
Answer the following question given this paragraph: Mammals generate heat mainly by keeping their metabolic rate high. The cells of mammals have many more mitochondria than the cells of other animals. The extra mitochondria generate enough energy to keep the rate of metabolism high. Mammals can also generate little bursts of heat by shivering. Shivering occurs when many muscles contract a little bit all at once. Each muscle that contracts produces a small amount of heat. Q: Mammals generate heat primarily by maintaining a high rate of what? Choices: - reproduction - respiration - movement - metabolism A:
**Answer**
metabolism
Answer the following question given this paragraph: But ice ages also occurred many times in the past. An ice age is a period when temperatures are cooler than normal. This causes glaciers to spread to lower latitudes. Scientists think that ice ages occurred at least six times over the last billion years alone. How do scientists learn about Earth's past climates?. Q: What is the term for a period when temperatures are cooler than normal causing glaciers to spread to lower latitudes? Choices: - cooling era - cold age - freezing point - ice age A:
ice age