What is a gas in science? Gas is a state of matter that has no fixed shape and no fixed volume. Gases have lower density than other states of matter, such as solids and liquids. The particles exert more force on the interior volume of the container. This force is called pressure. There are several […]

What role do cell walls perform in a plant? The cell wall surrounds the plasma membrane of plant cells and provides tensile strength and protection against mechanical and osmotic stress. It also allows cells to develop turgor pressure, which is the pressure of the cell contents against the cell wall. What role do cell walls […]

What are the 7 types of questions? Let’s start with everyday types of questions people ask, and the answers they’re likely to elicit. Closed questions (aka the ‘Polar’ question) Open questions. Probing questions. Leading questions. Loaded questions. Funnel questions. Recall and process questions. Rhetorical questions. What is the questioning method? This method is one in […]

How does the Doppler effect change the pitch of sound? The Doppler effect is a change in the frequency of sound waves that occurs when the source of the sound waves is moving relative to a stationary listener. As the source of sound waves approaches a listener, the sound waves get closer together, increasing their […]

Do temperate deciduous forests have rich soil? Deciduous forests have soils called Alfisols. These soils do not have a bleached E horizon, but do have clays that accumulate in the subsoils. Alfisols are very common in the Midwestern region, and are the most fertile type of forest soils. In the Southeastern US, there are coniferous […]

Which gland helps regulate growth blood pressure and water balance? The hypothalamus secretes hormones that stimulate or suppress the release of hormones in the pituitary gland, in addition to controlling water balance, sleep, temperature, appetite, and blood pressure. How does ADH control water balance? Antidiuretic hormone stimulates water reabsorbtion by stimulating insertion of “water channels” […]

How are elements and atoms related? How are atoms and elements related? An atom is the basic unit of life, and an element is one type of atom, or a group of the same type of atoms. All atoms of the same element have the same number of protons. Atoms of different elements differ in […]

Why might finches with these types of beaks have survived and passed on their traits to offspring? Because the drought reduced the number of seeds and finches with bigger beaks were able to eat the larger and harder seeds so more of them survived. What happened to the size of the beaks after the drought? […]

What antibiotics work by inhibiting protein synthesis? The following are the medications that are protein synthesis inhibitors. Aminoglycosides. Tetracycline and glycylcycline. Oxazolidinones. Amphenicols and pleuromutilins. Macrolides and ketolides. Lincosamides. Streptogramins. Which drug acts by inhibiting the protein synthesis of the bacteria? Chloramphenicol. Chloramphenicol is a broad spectrum antibiotic which acts as a potent inhibitor of […]

Where is stormwater stored? Stormwater can soak into the soil (infiltrate), be stored on the land surface in ponds and puddles, evaporate, or contribute to surface runoff. Most runoff is conveyed directly to nearby streams, rivers, or other water bodies (surface water) without treatment. What is the correct term used to describe the amount of […]