Q: How do mammals generate heat? Read this paragraph and choose the correct option from the provided answers: Mammals generate heat mainly by maintaining a high rate of metabolism. Compared with the cells of other animals, the cells of mammals have more mitochondria. Mitochondria are the cell organelles that generate energy. Mammals may also produce little bursts of heat by shivering. Shivering occurs when many muscles all contract slightly at the same time. The muscle contractions generate a small amount of heat. Choices: - running around fast - eating spicy foods - maintaning low metabolism - maintaining high metabolism A:
maintaining high metabolism

Q: The voltage is measured using a voltmeter, which measures which difference across two points? Read this paragraph and choose the correct option from the provided answers: A uniform electric field makes it easier to measure the difference in electric potential energy. This energy, also called the electric potential difference is commonly referred to as the voltage , based on the unit, volt (V). To measure the voltage across some distance, it is necessary to pick a position to be the relative zero, because voltage is the change in potential difference. Any point in a system can be given the value of zero volts, but it is typically the point of a point charge or one plate in a uniform electric field as shown above. The voltage is measured using a voltmeter, which measures the electric potential difference across two points. Choices: - Distance - actual difference - average difference - potential difference A:
potential difference

Q: Q: Would you find cells that contain a cell wall, a large central vacuole, and plastids in plant or animal cells? Read this paragraph and choose the correct option from the provided answers: Most organelles are common to both animal and plant cells. However, plant cells also have features that animal cells do not have: a cell wall, a large central vacuole, and plastids such as chloroplasts. Choices: - heart cells - animal cells - tube cells - plant cells A:
A: plant cells

Question: Q: What are the two groups of therian mammals? Read this paragraph and choose the correct option from the provided answers: Therian mammals are viviparous. They give birth to an embryo or infant rather than laying eggs. The female reproductive system of a therian mammal includes a uterus and a vagina. There are two groups of therian mammals: placental mammals and marsupials. Choices: - felines and canines - monotremes and mollusks - dolphins and whales - placental mammals and marsupials A:
Answer: placental mammals and marsupials

*Question*
Q: Kyphosis, lordosis, and scoliosis are all diseases involving improper curvature of which bodily structure (which is supposed to be curved in a certain way anyway)? Read this paragraph and choose the correct option from the provided answers: During fetal development, the body is flexed anteriorly into the fetal position, giving the entire vertebral column a single curvature that is concave anteriorly. In the adult, this fetal curvature is retained in two regions of the vertebral column as the thoracic curve, which involves the thoracic vertebrae, and the sacrococcygeal curve, formed by the sacrum and coccyx. Each of these is thus called a primary curve because they are retained from the original fetal curvature of the vertebral column. A secondary curve develops gradually after birth as the child learns to sit upright, stand, and walk. Secondary curves are concave posteriorly, opposite in direction to the original fetal curvature. The cervical curve of the neck region develops as the infant begins to hold their head upright when sitting. Later, as the child begins to stand and then to walk, the lumbar curve of the lower back develops. In adults, the lumbar curve is generally deeper in females. Disorders associated with the curvature of the spine include kyphosis (an excessive posterior curvature of the thoracic region), lordosis (an excessive anterior curvature of the lumbar region), and scoliosis (an abnormal, lateral curvature, accompanied by twisting of the vertebral column). Choices: - lungs - aorta - femur - spine A:
**Answer**
spine

(Question)
Q: What states that chemical reactions occur when atoms, ions, or molecules collide? Read this paragraph and choose the correct option from the provided answers: Collision theory states that chemical reactions occur when atoms, ions, or molecules collide. In other words, these species need to make contact with one another in order for a reaction to take place. Based on this concept, along with a couple of other key points, collision theory helps to explain why certain factors will influence the rate of a chemical reaction. Choices: - disturbance theory - reaction theory - elemental theory - collision theory A:
(Answer)
collision theory