Q: The end result of diffusion is an equal concentration, or equilibrium , of molecules on both sides of what? Read this paragraph and choose the correct option from the provided answers: Diffusion will continue until the concentration gradient has been eliminated. Since diffusion moves materials from an area of higher concentration to the lower, it is described as moving solutes "down the concentration gradient. " The end result of diffusion is an equal concentration, or equilibrium , of molecules on both sides of the membrane. At equilibrium, movement of molecules does not stop. At equilibrium, there is equal movement of materials in both directions. Choices: - the cell - the organism - the organelle - the membrane A:
the membrane

Q: Chlorophyll is used in what food-making process that plants carry out? Read this paragraph and choose the correct option from the provided answers: Choices: - colorization - isolation - digestion - photosynthesis A:
photosynthesis

Q: Q: Although air can transfer heat rapidly by convection, it is a poor conductor and thus a good what? Read this paragraph and choose the correct option from the provided answers: Although air can transfer heat rapidly by convection, it is a poor conductor and thus a good insulator. The amount of available space for airflow determines whether air acts as an insulator or conductor. The space between the inside and outside walls of a house, for example, is about 9 cm (3.5 in) large enough for convection to work effectively. The addition of wall insulation prevents airflow, so heat loss (or gain) is decreased. Similarly, the gap between the two panes of a double-paned window is about 1 cm, which prevents convection and takes advantage of air's low conductivity to prevent greater loss. Fur, fiber, and fiberglass also take advantage of the low conductivity of air by trapping it in spaces too small to support convection, as shown in the figure. Fur and feathers are lightweight and thus ideal for the protection of animals. Choices: - magnet - absorber - transporter - insulator A:
A: insulator

Question: Q: What do the cells in the front of a volvox typically develop to help swim towards light? Read this paragraph and choose the correct option from the provided answers: Each Volvox , shown in Figure above , is a colonial organism. It is made up of between 1,000 to 3,000 photosynthetic algae that are grouped together into a hollow sphere. The sphere has a distinct front and back end. The cells have eyespots, which are more developed in the cells near the front. This enables the colony to swim towards light. Choices: - tumors - sunspots - vertebrates - eyespots A:
Answer: eyespots

*Question*
Q: What is the name for a parasite that causes disease? Read this paragraph and choose the correct option from the provided answers: Choices: - fungi - enfluenza - microbes - pathogen A:
**Answer**
pathogen

(Q).
Q: What type of oil is being explored to replace petroleum products in lubricants? Read this paragraph and choose the correct option from the provided answers: Vegetable oils are being explored for a variety of uses in which they could replace petroleum products. One such application is in the field of lubricants. Every moving part in machinery (such as engine pistons) needs lubrication to decrease friction and prolong the life of the equipment. Petroleum products serve this purpose now, but are not good for the environment. New techniques for making specialized esters from vegetable oil are being explored that will make the compounds more stable and more useful as lubricants. Choices: - essential oil - diesel - whale oil - vegetable A:
(A).
vegetable