Q: Q: How many pairs of chromosomes do human have ? Read this paragraph and choose the correct option from the provided answers: Human Genome, Chromosomes, and Genes. Each chromosome of the human genome contains many genes as well as noncoding intergenic (between genes) regions. Each pair of chromosomes is shown here in a different color. Notice that there are 23 pairs of chromosomes. Choices: - 12 pairs - 31 pairs - 19 pairs - 23 pairs A:
A: 23 pairs

Q: Q: The magnet field of earth is called what? Read this paragraph and choose the correct option from the provided answers: Earth is a giant magnet with north and south magnetic poles and a magnetic field called the magnetosphere. Evidence in rocks shows that Earth's magnetic poles switched positions hundreds of times in the past. Scientists think that Earth's magnetic field is caused by the movement of charged particles through molten metals in the outer core. Choices: - atmosphere - troposphere - ionosphere - magnetosphere A:
A: magnetosphere

Q: Q: What is the division of the body into multiple parts called? Read this paragraph and choose the correct option from the provided answers: Segmentation evolved next. This is a division of the body into multiple segments. Both the earthworm and ant pictured in Figure below have segmented bodies. This trait increases flexibility. It permits a wider range of motion. All annelids and arthropods are segmented. Arthropods also evolved jointed appendages. For example, they evolved jointed legs for walking and "feelers" (antennae) for sensing. Choices: - compression - transverse - organ-level organization - segmentation A:
A: segmentation

Q: Q: In the lens makers' equation, diverging lenses and virtual images are associated with what kinds of numbers? Read this paragraph and choose the correct option from the provided answers: When using the lens makers equation, remember that real things get positive numbers and virtual things get negative numbers. Thus, diverging lenses and virtual images get negative numbers. The object distance is always positive. Choices: - positive numbers - variable numbers - fractional numbers - negative numbers A:
A: negative numbers