Answer the following question given this paragraph: If the rocks on one or both sides of a fracture move, the fracture is called a fault ( Figure below ). Faults can occur alone or in clusters. A cluster of faults creates a fault zone . Earthquakes happen when rocks break and move suddenly. The energy released causes an earthquake. Q: What is the fracture called when rocks on both sides move? Choices: - a crevice - a shear - a stress fracture - a fault A:
a fault
Answer the following question given this paragraph: Figure 1.17 This phylogenetic tree was constructed by microbiologist Carl Woese using data obtained from sequencing ribosomal RNA genes. The tree shows the separation of living organisms into three domains: Bacteria, Archaea, and Eukarya. Bacteria and Archaea are prokaryotes, single-celled organisms lacking intracellular organelles. (credit: Eric Gaba; NASA Astrobiology Institute). Q: What scientist constructed a tree diagram, separating living organisms into three domains? Choices: - Gibbs - CT Fletcher - Mendel - carl woese A:
carl woese
Q: Answer the following question given this paragraph: Whereas cystic fibrosis, Tay-Sachs, and phenylketonuria are all autosomal recessive disorders, achondroplasia is an autosomal dominant disorder. Achondroplasia is the most common cause of dwarfism in humans. Achondroplasia is a result of an autosomal dominant mutation in the fibroblast growth factor receptor gene 3 (FGFR3), which causes an abnormality of cartilage formation. FGFR3 normally has a negative regulatory effect on bone growth. In achondroplasia, the mutated form of the receptor is constitutively active (constantly "turned on") and this leads to severely shortened bones. Individuals with achondroplasia are heterozygous for the mutation (one mutant copy, one normal copy). Homozygous for the achondroplasia mutation is lethal prior to birth or shortly after birth. Q: What is the most common cause of dwarfism? Choices: - deformity - hypothyroidism - retinopathy - achondroplasia A:
A: achondroplasia
Question: Answer the following question given this paragraph: The orbits of the planets are elliptical. Q: What shape is the orbit of a planet? Choices: - cleaved - vertical - spiral - elliptical A:
Answer: elliptical
*Question*
Answer the following question given this paragraph: The first continents were small but they grew over time. Supercontinents have formed at least five times in Earth history. Q: Supercontinents have formed at least how many times in earth history? Choices: - twenty - nine - two - five A:
**Answer**
five
*Question*
Answer the following question given this paragraph: 2.2 Chemical Bonds Each moment of life, atoms of oxygen, carbon, hydrogen, and the other elements of the human body are making and breaking chemical bonds. Ions are charged atoms that form when an atom donates or accepts one or more negatively charged electrons. Cations (ions with a positive charge) are attracted to anions (ions with a negative charge). This attraction is called an ionic bond. In covalent bonds, the participating atoms do not lose or gain electrons, but rather share them. Molecules with nonpolar covalent bonds are electrically balanced, and have a linear three-dimensional shape. Molecules with polar covalent bonds have "poles"regions of weakly positive and negative chargeand have a triangular three-dimensional shape. An atom of oxygen and two atoms of hydrogen form water molecules by means of polar covalent bonds. Hydrogen bonds link hydrogen atoms already participating in polar covalent bonds to anions or electronegative regions of other polar molecules. Hydrogen bonds link water molecules, resulting in the properties of water that are important to living things. Q: Cations are attracted to anions, which are ions with what charge? Choices: - similar - neutral - positive - negative A:
**Answer**
negative