What are the characteristics of phospholipid bilayer? Phospholipid Bilayer Consist of a polar head (hydrophilic) composed of a glycerol and a phosphate molecule. Consist of two non-polar tails (hydrophobic) composed of fatty acid (hydrocarbon) chains. Because phospholipids contain both hydrophilic (water-loving) and lipophilic (fat-loving) regions, they are classed as amphipathic. What is true about phospholipids? […]

Why are protists considered a paraphyletic group? Why are protists considered paraphyletic? They include some but not all descendants of their most recent common ancestor. What material is not used by protists to manufacture hard outer coverings? Why are protists considered non monophyletic? “ ‘Kingdom Protista’ is not monophyletic; it contains organisms which are more […]

Are members of Kingdom Protista prokaryotic or eukaryotic? The kingdom Protista contains the single-celled eukaryotes in contrast to the bacteria which are examples of the prokaryotic cell type. Protists are a diverse group of organisms that are either unicellular or multicellular without highly specialized tissues. Are protists considered prokaryotes? All living organisms can be broadly […]

What property of water is responsible for water moving up the roots of plants? Plants and trees couldn’t thrive without capillary action. Capillary action helps bring water up into the roots. With the help of adhesion and cohesion, water can work it’s way all the way up to the branches and leaves. Read on to […]

What are the effects of CO2 accumulation in the atmosphere? Carbon dioxide increases temperatures, extending the growing season and increasing humidity. Both factors have led to some additional plant growth. However, warmer temperatures also stress plants. With a longer, warmer growing season, plants need more water to survive. What increases CO2 levels in the atmosphere? […]

What is responsible for absorbing the most UV radiation? Stratosphere Which layer of the atmosphere is likely the most important for life on Earth? troposphere Is all the radiation absorbed in the Earth’s atmosphere is absorbed in the stratosphere? Air pollution only occurs as a result of human activity. All the radiation absorbed in the […]

What are the 4 types of organic molecules? The four types most important to human structure and function are carbohydrates, lipids, proteins, and nucleotides. Before exploring these compounds, you need to first understand the chemistry of carbon. What are the 4 types of molecules? There are four major classes of biological macromolecules (carbohydrates, lipids, proteins, […]

What is a downfall of a tragic hero? Hamartia, sometimes known as tragic flaw, is a fault or failing withing a character that leads to their downfall. For example, hubris is a common tragic flaw in that its nature is excessive pride and even defiance of the gods in Greek tragedy. Overall, a tragic hero […]

Which is an organic molecule? A molecule of the kind normally found in living systems. Organic molecules are usually composed of carbon atoms in rings or long chains, to which are attached other atoms of such elements as hydrogen, oxygen, and nitrogen. Which of the following is an example of an organic molecule? Some examples […]

What happens when energy intake is less than energy expenditure? Energy balance refers to the relationship of energy intake to energy expenditure and energy storage. Less energy expenditure than energy intake results in a positive energy balance and storage of energy primarily as body fat. What is energy balance in the body? Listen to pronunciation. […]