*Question*
Q: The cell membrane consists of two adjacent layers of what? Read this paragraph and choose the correct option from the provided answers: The cell membrane consists of two adjacent layers of phospholipids. The lipid tails of one layer face the lipid tails of the other layer, meeting at the interface of the two layers. The phospholipid heads face outward, one layer exposed to the interior of the cell and one layer exposed to the exterior (Figure 3.3). Because the phosphate groups are polar and hydrophilic, they are attracted to water in the intracellular fluid. Intracellular fluid (ICF) is the fluid interior of the cell. The phosphate groups are also attracted to the extracellular fluid. Extracellular fluid (ECF) is the fluid environment outside the enclosure of the cell membrane. Interstitial fluid (IF) is the term given to extracellular fluid not contained within blood vessels. Because the lipid tails are hydrophobic, they meet in the inner region of the membrane, excluding watery intracellular and extracellular fluid from this space. The cell membrane has many proteins, as well as other lipids (such as cholesterol), that are associated with the phospholipid bilayer. An important feature of the membrane is that it remains fluid; the lipids and proteins in the cell membrane are not rigidly locked in place. Choices: - lecithin - membranes - eukaryotes - phospholipids A:
**Answer**
phospholipids

*Question*
Q: What is the scientific term for climates with the least moisture? Read this paragraph and choose the correct option from the provided answers: In terms of moisture, climates can be classified as arid (dry), semi-arid, humid (wet), or semi-humid. The amount of moisture depends on both precipitation and evaporation. Choices: - mediterannean - tropical - polar - arid A:
**Answer**
arid

*Question*
Q: The four moons of jupiter are collectively named after what 17th century astronomer, who discovered them? Read this paragraph and choose the correct option from the provided answers: Jupiter has lots of moons. As of 2012, we have discovered over 66 natural satellites of Jupiter. Four are big enough and bright enough to be seen from Earth using a pair of binoculars. These four moons were first discovered by Galileo in 1610. They are called the Galilean moons . The figure below shows the four Galilean moons and their sizes relative to each other ( Figure below ). These moons are named Io, Europa, Ganymede, and Callisto. The Galilean moons are larger than even the biggest dwarf planets, Pluto and Eris. Ganymede is the biggest moon in the solar system. It is even larger than the planet Mercury!. Choices: - Linnaeus - copernicus - darwin - galileo A:
**Answer**
galileo

*Question*
Q: What structure is made from dna and protein molecules coiled together? Read this paragraph and choose the correct option from the provided answers: As a cell prepares to divide, its DNA first forms one or more structures called chromosomes. A chromosome consists of DNA and protein molecules coiled into a definite shape. Chromosomes are circular in prokaryotes and rodlike in eukaryotes. You can see an example of a human chromosome in Figure below . The rest of the time, DNA looks like a tangled mass of strings. In this form, it would be very difficult to copy and divide. Choices: - bacterium - enzymes - atoms - chromosome A:
**Answer**
chromosome