How is sunlight the primary source of energy? 3.1 The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers such as plants, algae, and cyanobacteria use the energy from sunlight to make organic matter from carbon dioxide and water. This establishes the beginning of energy […]

What are waxes in lipids? A wax is a simple lipid which is an ester of a long-chain alcohol and a fatty acid. The alcohol may contain from 12-32 carbon atoms. Waxes are found in nature as coatings on leaves and stems. The wax prevents the plant from losing excessive amounts of water. Where are […]

What animals hibernate during winter? 10 animals that hibernate, aside from bears Bumblebees. Queen bumblebees hibernate during the winter and the rest of the bees die. Hedgehogs. Ground squirrels. Bats. Turtles. Common poorwill. Snakes. Woodchucks. Which animals hibernate the longest? Bats. When bats are left alone, they can be some of the longest hibernators. In […]

What are the 3 types of selection? The 3 Types of Natural Selection Stabilizing Selection. Directional Selection. Disruptive Selection. What happens in stabilizing selection? The stabilizing process is one that results statistically in an over-represented norm. In other words, this happens when the selection process—in which certain members of a species survive to reproduce while […]

What are cell components and their functions? What’s found inside a cell Organelle Function Nucleus DNA Storage Mitochondrion Energy production Smooth Endoplasmic Reticulum (SER) Lipid production; Detoxification Rough Endoplasmic Reticulum (RER) Protein production; in particular for export out of the cell How are the organelles in a cell similar to the organs in a human […]

What is the magnitude of the normal force on the box? The net force on the object is zero Newtons, so the normal force has the same magnitude as these combined forces but the opposite direction. Therefore the normal force is pointed upward and has a magnitude of 70.8N. What forces are used when pushing […]

Is combustion of fossil fuels a carbon sink? Natural processes aren’t the only carbon sinks. Fossil fuels are an example of carbon that was stored millions of years ago, as are carbonate rocks such as limestone. Burning fossil fuels releases carbon back into the atmosphere, as does the process of transforming limestone into cement. Which […]

What does the peripheral nervous system connect to? The peripheral nervous system (PNS) is the division of the nervous system containing all the nerves that lie outside of the central nervous system (CNS). The primary role of the PNS is to connect the CNS to the organs, limbs, and skin. What connects the brain to […]

What happens when DNA is heated? Heat denaturation of DNA, also called melting, causes the double helix structure to unwind to form single stranded DNA. When DNA in solution is heated above its melting temperature (usually more than 80 °C), the double-stranded DNA unwinds to form single-stranded DNA. What happens to a DNA molecule when […]

What is the sequence of translation? Translation: Beginning, middle, and end Initiation (“beginning”): in this stage, the ribosome gets together with the mRNA and the first tRNA so translation can begin. Elongation (“middle”): in this stage, amino acids are brought to the ribosome by tRNAs and linked together to form a chain. What are the […]