What is the unit of intensity of light? candela Which is respond to intensity of light? The retina is the back part of the eye that contains the cells that respond to light. These specialized cells are called photoreceptors. There are 2 types of photoreceptors in the retina: rods and cones. What is intensity a […]
Why is it important to have a cardiovascular endurance?
Why is it important to have a cardiovascular endurance? Cardiorespiratory endurance tests monitor how well the heart, lungs, and muscles perform during moderate to high-intensity exercise. Increasing cardiorespiratory endurance improves oxygen uptake in the lungs and heart and can help a person sustain physical activity for longer. How long does it take to make exercise […]
Why is plate tectonic a theory?
Why is plate tectonic a theory? The theory of plate tectonics states that the Earth’s solid outer crust, the lithosphere, is separated into plates that move over the asthenosphere, the molten upper portion of the mantle. Thus, at divergent boundaries, oceanic crust is created. What are the basic assumptions of the plate tectonics theory? Two […]
What is it called when a trait is determined by multiple genes?
What is it called when a trait is determined by multiple genes? A polygenic trait is one whose phenotype is influenced by more than one gene. Traits that display a continuous distribution, such as height or skin color, are polygenic. What is an example of a single allele trait? Definition of an Allele When certain […]
What does it mean to be granted a monopoly by the community to supply certain services?
What does it mean to be granted a monopoly by the community to supply certain services? What does it mean to be granted a monopoly by the community to supply certain services? Some professionals are granted monopolies because only they possess the necessary knowledge and skills to meet particular needs of the community. Which of […]
Is UV-C blocked by ozone?
Is UV-C blocked by ozone? UV-C is completely absorbed by the ozone layer, which is fortunate since humans have no natural defense against this kind of radiation. Is UV-A light safe? UVA rays cause tanning, and the shorter wavelengths of UVA also cause sunburn. There is no such thing as a safe or healthy tan. […]
What are the three parts of a gene?
What are the three parts of a gene? Genes consist of three types of nucleotide sequence: coding regions, called exons, which specify a sequence of amino acids. non-coding regions, called introns, which do not specify amino acids. regulatory sequences, which play a role in determining when and where the protein is made (and how much […]
What is the circuit symbol of a battery?
What is the relation between pressure and boiling point?
What is the relation between pressure and boiling point? The pressure of gas above a liquid affects the boiling point. In an open system this is called atmospheric pressure. The greater the pressure, the more energy required for liquids to boil, and the higher the boiling point. Why pressure affects boiling point? Pressure Affects the […]
How many valence electrons does magnesium lose to become stable?
How many valence electrons does magnesium lose to become stable? two electrons Does magnesium have 2 valence electrons? The outer energy level for this atom is n = 3, and it has two electrons in this energy level. Therefore, magnesium has two valence electrons. Does magnesium give or take electrons? In ionic molecules, the metal […]