Q: How many pairs of upper jaws do insects have? Read this paragraph and choose the correct option from the provided answers: For feeding, the insect head contains one pair of lower jaws and two pairs of upper jaws. Insects have also evolved a wide range of specialized mouthparts for eating certain foods. You can see some examples in Figure below . Choices: - four pairs - six pairs - three pairs - two pairs A:
two pairs

Q: The ions in ionic compounds are arranged in rigid three-dimensional patterns called what? Read this paragraph and choose the correct option from the provided answers: The ions in ionic compounds are arranged in rigid three-dimensional patterns called crystal lattices. The crystal lattice that is formed is a characteristic property of a given compound. Choices: - core lattices - lattice groups - pattern lattices - crystal lattices A:
crystal lattices

Q: Q: While similar to insects, what eight-legged invertebrates lack antennae or wings? Read this paragraph and choose the correct option from the provided answers: Arachnids do not have antennae or wings. Choices: - spiders - reptiles - crustaceans - arachnids A:
A: arachnids

Question: Q: What part of the ear is often described as a bony labyrinth? Read this paragraph and choose the correct option from the provided answers: The inner ear is often described as a bony labyrinth, as it is composed of a series of canals embedded within the temporal bone. It has two separate regions, the cochlea and the vestibule, which are responsible for hearing and balance, respectively. The neural signals from these two regions are relayed to the brain stem through separate fiber bundles. However, these two distinct bundles travel together from the inner ear to the brain stem as the vestibulocochlear nerve. Sound is transduced into neural signals within the cochlear region of the inner ear, which contains the sensory neurons of the spiral ganglia. These ganglia are located within the spiral-shaped cochlea of the inner ear. The cochlea is attached to the stapes through the oval window. The oval window is located at the beginning of a fluid-filled tube within the cochlea called the scala vestibuli. The scala vestibuli extends from the oval window, travelling above the cochlear duct, which is the central cavity of the cochlea that contains the sound-transducing neurons. At the uppermost tip of the cochlea, the scala vestibuli curves over the top of the cochlear duct. The fluid-filled tube, now called the scala tympani, returns to the base of the cochlea, this time travelling under the cochlear duct. The scala tympani ends at the round window, which is covered by a membrane that contains the fluid within the scala. As vibrations of the ossicles travel through the oval window, the fluid of the scala vestibuli and scala tympani moves in a wave-like motion. The frequency of the fluid waves match the frequencies of the sound waves (Figure 14.6). The membrane covering the round window will bulge out or pucker in with the movement of the fluid within the scala tympani. Choices: - embedded ear - solid ear - outer ear - inner ear A:
Answer: inner ear

*Question*
Q: When both momentum and kinetic energy are conserved in a closed system, the collision is called what? Read this paragraph and choose the correct option from the provided answers: For all collisions in a closed system, momentum is conserved. In some collisions in a closed system, kinetic energy is conserved. When both momentum and kinetic energy are conserved, the collision is called an elastic collision. Most collisions are inelastic because some amount of kinetic energy is converted to potential energy, usually by raising one of the objects higher (increasing gravitation PE) or by flexing the object. Any denting or other changing of shape by one of the objects will also be accompanied by a loss of kinetic energy. The only commonly seen elastic collisions are those between billiard balls or ball bearings, because these balls do not compress. And, of course, collisions between molecules are elastic if no damage is done to the molecules. Choices: - a static collision - a spontaneous collision - an accidental collision - an elastic collision A:
**Answer**
an elastic collision

Q: Most molecular compounds that have a mass similar to water are in what state of matter at room temperature? Read this paragraph and choose the correct option from the provided answers: The hydrogen bonding that occurs in water leads to some unusual, but very important properties. Most molecular compounds that have a mass similar to water are gases at room temperature. Because of the strong hydrogen bonds, water molecules are able to stay condensed in the liquid state. The Figure below shows how the bent shape and two hydrogen atoms per molecule allows each water molecule to be able to hydrogen bond to two other molecules. Choices: - solid - liquid - vapor - gas A:
gas