Does RNA contain uracil? Uracil is a nucleotide, much like adenine, guanine, thymine, and cytosine, which are the building blocks of DNA, except uracil replaces thymine in RNA. So uracil is the nucleotide that is found almost exclusively in RNA. Does RNA contain thymine? RNA is a polymer with a ribose and phosphate backbone and […]

How do convection currents move the lithosphere and tectonic plates? Convection currents describe the rising, spread, and sinking of gas, liquid, or molten material caused by the application of heat. Tremendous heat and pressure within the earth cause the hot magma to flow in convection currents. These currents cause the movement of the tectonic plates […]

Does the liver destroy old blood cells? “The fact that the liver is the main organ of RBC removal and iron recycling is surprising, as is the fact that the liver relies on a buffer system consisting of bone marrow-derived monocytes that consume damaged red blood cells in the blood and settle in the liver, […]

Which of the following is a characteristic of protists? Characteristics of Protists They are eukaryotic, which means they have a nucleus. Most have mitochondria. They can be parasites. They all prefer aquatic or moist environments. What are the characteristics of protists quizlet? What are some general characteristics of protists? Most are unicellular, but some are […]

What are the 5 stages of endochondral ossification? Terms in this set (6) Cartilage enlarges; Chondrocytes die. blood vessels grow into perichondrium; cells convert to osteoblasts; shaft becomes covered with superficial bone. more blood supply and osteoblasts; produces spongy bone; formation spreads on shaft. Osteoclasts create medullary cavity; appositional growth. What happens to chondrocytes during […]

What are the reactants and products of cellular respiration? Carbon dioxide + Water Glucose (sugar) + Oxygen CO2 + H2O C6H12O6 + 6O2 Cellular respiration or aerobic respiration is a series of chemical reactions which begin with the reactants of sugar in the presence of oxygen to produce carbon dioxide and water as waste products. […]

What are the two stages of photosynthesis? Photosynthesis takes place in two stages: light-dependent reactions and the Calvin cycle. Light-dependent reactions, which take place in the thylakoid membrane, use light energy to make ATP and NADPH. What are the light and dark stages of photosynthesis? What is the difference between light and dark reaction? The […]

Which process results in offspring that are genetically identical? Asexual reproduction involves one parent and produces offspring that are genetically identical to each other and to the parent. Sexual reproduction involves two parents and produces offspring that are genetically unique. Which process occurs in their body somatic cells? Mitosis How do the number of chromosomes […]

Which problem are green roofs most likely helping to solve? Green roofs appeal to cities because they soak up rainwater, making excess stormwater less likely to flood sewage systems and inflate sewage treatment costs. Plant-filled rooftops make urban areas less likely to become heat islands. They reduce air pollution and noise pollution. What are the […]

What is possible effect of leakage of inner ear fluid? A perilymph fistula (PLF) is a tear of defect in the membranes that separate the middle ear from the perilymphatic space in the inner ear. The tear can allow fluid to leak into the middle ear. It can also cause changes of pressure in the […]