Ques: Q: What are organelles made of protein and ribosomal rna (rrna)? Read this paragraph and choose the correct option from the provided answers: 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. Choices: - electrons - carbons - chromosomes - ribosomes A:
Ans: ribosomes

Ques: Q: What is the term for atherosclerosis of arteries that supply the heart muscle? Read this paragraph and choose the correct option from the provided answers: Atherosclerosis of arteries that supply the heart muscle is called coronary heart disease . This disease may or may not have symptoms, such as chest pain. As the disease progresses, there is an increased risk of heart attack. A heart attack occurs when the blood supply to part of the heart muscle is blocked and cardiac muscle fibers die. Coronary heart disease is the leading cause of death of adults in the United States. Choices: - rapid heart disease - essential heart disease - cardiovascular disease - coronary heart disease A:
Ans: coronary heart disease

Ques: 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:
Ans: heat

Ques: Q: How do prokaryotic organisms reproduce asexually? Read this paragraph and choose the correct option from the provided answers: Prokaryotic organisms reproduce asexually by binary fission , a process that produces identical offspring ( Figure below ). In asexual reproduction , a single parent produces genetically identical offspring. As prokaryotes do not have a nucleus, and have only one circular chromosome, they do not need to reproduce by the same mechanism as eukaryotic cells; mitosis does not exist in prokaryotic cells . Prokaryotic cell division is a much simpler process. In prokaryotic cell division, after the single chromosome is copied, the cell grows larger. Eventually the two chromosomes separate and move to opposite ends of the cell. Newly formed cell membrane then grows into the center of the cell, separating the two chromosomes, and forming two genetically identical daughter cells. Some eukaryotic organelles, such as mitochondria and chloroplasts, also divide by binary fission. Choices: - mitosis - residual fission - kinetic fission - binary fission A:
Ans:
binary fission