Q: Answer the following question given this paragraph: Meteorites provide clues about our solar system. Many were formed in the early solar system ( Figure below ). Some are from asteroids that have split apart. A few are rocks from nearby bodies like Mars. For this to happen, an asteroid smashed into Mars and sent up debris. A bit of the debris entered Earth's atmosphere as a meteor. Q: What astronomical phenomenon, formed of split asteroids or planetary rocks, provides clues about our solar system? Choices: - galaxies - comets - stars - meteorites A:
A: meteorites

Q: Answer the following question given this paragraph: Figure 33.18 Smooth muscle cells do not have striations, while skeletal muscle cells do. Cardiac muscle cells have striations, but, unlike the multinucleate skeletal cells, they have only one nucleus. Cardiac muscle tissue also has intercalated discs, specialized regions running along the plasma membrane that join adjacent cardiac muscle cells and assist in passing an electrical impulse from cell to cell. Q: Skeletal muscle cells and cardiac muscle cells share what property, which is not shared by smooth muscle cells? Choices: - surfaces - overlap - filaments - striations A:
A: striations

Q: Answer the following question given this paragraph: The hybridization model helps explain molecules with double or triple bonds. Consider the ethene molecule (C 2 H 4 ), which contains a double covalent bond between the two carbon atoms and single bonds between the carbon atoms and the hydrogen atoms. The entire molecule is planar. Q: Which model helps explain molecules with double or triple bonds? Choices: - salinity model - reactivity model - particle model - hybridization model A:
A: hybridization model

Q: Answer the following question given this paragraph: end is also anchored to the first rib by the costoclavicular ligament. The acromial end of the clavicle articulates with the acromion of the scapula at the acromioclavicular joint. This end is also anchored to the coracoid process of the scapula by the coracoclavicular ligament, which provides indirect support for the acromioclavicular joint. The clavicle supports the scapula, transmits the weight and forces from the upper limb to the body trunk, and protects the underlying nerves and blood vessels. The scapula lies on the posterior aspect of the pectoral girdle. It mediates the attachment of the upper limb to the clavicle, and contributes to the formation of the glenohumeral (shoulder) joint. This triangular bone has three sides called the medial, lateral, and superior borders. The suprascapular notch is located on the superior border. The scapula also has three corners, two of which are the superior and inferior angles. The third corner is occupied by the glenoid cavity. Posteriorly, the spine separates the supraspinous and infraspinous fossae, and then extends laterally as the acromion. The subscapular fossa is located on the anterior surface of the scapula. The coracoid process projects anteriorly, passing inferior to the lateral end of the clavicle. Q: What supports the scapula, transmits the weight and forces from the upper limb to the body trunk, and protects the underlying nerves and blood vessels? Choices: - bladder - pelvis - cranium - clavicle A:
A: clavicle