Why is the shape of DNA called a double helix? The double helix of DNA is, like its name implies, in the shape of a helix which is essentially a three dimensional spiral. The double comes from the fact that the helix is made of two long strands of DNA that are intertwined—sort of like […]
What causes a population to have a carrying capacity?
What causes a population to have a carrying capacity? Carrying capacity can be defined as a species’ average population size in a particular habitat. The species population size is limited by environmental factors like adequate food, shelter, water, and mates. If these needs are not met, the population will decrease until the resource rebounds. What […]
How the flow of energy is different from that of materials?
How the flow of energy is different from that of materials? There is a fundamental difference in the way energy and matter flows through an ecosystem. Matter flows through the ecosystem in the form of the non-living nutrients essential to living organisms. So you see, matter is recycled in the ecosystem. Unlike matter, energy is […]
How does passive transport differ from active transport?
How does passive transport differ from active transport? The key difference between active and passive transport is that active transport forces molecules against the concentration gradient with help of ATP energy whereas passive transport let the molecules to pass across the membrane through a concentration channel, requiring no cellular energy. Does passive transport not require […]
Who provides the most energy in the ecosystem?
Who provides the most energy in the ecosystem? Explanation: Producers (plants) have the most energy in a food chain or web (besides the sun) and they give an organism more energy than a primary consumer or secondary consumer would. What provides the most energy in a food chain? The Sun 3.1 The Sun is the […]
What are the characteristics of a grassland ecosystem?
What are the characteristics of a grassland ecosystem? key characteristics of the grassland ecosystem: Limited annual rainfall. The dry climate throughout the year. Lack of nutrients in the soil. Grasslands are prone to drought and uncertain precipitation. Frequent fire due to semi-arid climate and flash lighting. Poor vegetation growth dominated by grasses. What are some […]
What is the study of living systems called?
What is the study of living systems called? Biology is the study of life. The word “biology” is derived from the Greek words “bios” (meaning life) and “logos” (meaning “study”). In general, biologists study the structure, function, growth, origin, evolution and distribution of living organisms. What is the study of the interactions of living things […]
Why do living things must have air?
Why do living things must have air? Air is important for living things. During respiration, a living thing takes in oxygen from the air and gives out carbon dioxide. This process gives animals and plants the energy to eat, grow, and live life! Does every living thing need air? In order to survive, all living […]
How do predators affect the population of their prey?
How do predators affect the population of their prey? As the prey population increases, there is more food for predators. So, after a slight lag, the predator population increases as well. As the number of predators increases, more prey are captured. As a result, the prey population starts to decrease. How do predators change the […]