Answer the following question given this paragraph: Fingernails and toenails consist of specialized epidermal cells that are filled with keratin . The keratin makes them tough and hard, which is important for the functions they serve. Fingernails prevent injury by forming protective plates over the ends of the fingers. They also enhance sensation by acting as a counterforce to the sensitive fingertips when objects are handled. Nails are similar to claws in other animals. They cover the tips of fingers and toes. Fingernails and toenails both grow from nail beds. As the nail grows, more cells are added at the nail bed. Older cells get pushed away from the nail bed and the nail grows longer. There are no nerve endings in the nail. Otherwise cutting your nails would hurt a lot!. Q: What fills the epidermal cells that make up fingernails and toenails? Choices: - cellulose - chromatin - amino acids - keratin A:
keratin
Answer the following question given this paragraph: Q: What isotope of carbon is typically used to date ancient items? Choices: - uranium 14 - nitrogen 14 - carbon 12 - carbon 14 A:
carbon 14
Q: Answer the following question given this paragraph: Symphysis A cartilaginous joint where the bones are joined by fibrocartilage is called a symphysis ("growing together"). Fibrocartilage is very strong because it contains numerous bundles of thick collagen fibers, thus giving it a much greater ability to resist pulling and bending forces when compared with hyaline cartilage. This gives symphyses the ability to strongly unite the adjacent bones, but can still allow for limited movement to occur. Thus, a symphysis is functionally classified as an amphiarthrosis. The gap separating the bones at a symphysis may be narrow or wide. Examples in which the gap between the bones is narrow include the pubic symphysis and the manubriosternal joint. At the pubic symphysis, the pubic portions of the right and left hip bones of the pelvis are joined together by fibrocartilage across a narrow gap. Similarly, at the manubriosternal joint, fibrocartilage unites the manubrium and body portions of the sternum. The intervertebral symphysis is a wide symphysis located between the bodies of adjacent vertebrae of the vertebral column. Here a thick pad of fibrocartilage called an intervertebral disc strongly unites the adjacent vertebrae by filling the gap between them. The width of the intervertebral symphysis is important because it allows for small movements between the adjacent vertebrae. In addition, the thick intervertebral disc provides cushioning between the vertebrae, which is important when carrying heavy objects or during high-impact activities such as running or jumping. Q: A cartilaginous joint where the bones are joined by fibrocartilage is called a what? Choices: - vesicles - mitosis - Testes - symphysis A:
A: symphysis
Question: Answer the following question given this paragraph: Old age begins in the mid-60s and lasts until the end of life. Most people over 65 have retired from work, freeing up their time for hobbies, grandchildren, and other interests. Stamina, strength, reflex time, and the senses all decline during old age, and the number of brain cells decreases as well. The immune system becomes less efficient, increasing the risk of serious illnesses such as cancer and pneumonia. Diseases such as Alzheimer's disease that cause loss of mental function also become more common. Q: When does diseases like alzheimer's become more common? Choices: - toddler - teenager - i-40 age - old age A:
Answer: old age
*Question*
Answer the following question given this paragraph: Q: Researchers have long based their hypotheses about animal phylogeny on what? Choices: - longitudinal data - manipulative data - distinctive data - morphological data A:
**Answer**
morphological data
Answer the following question given this paragraph: The shore may have a lot of sediment washed from land or eroded from cliffs. The sediment is transported by currents. Q: How is sediment transported? Choices: - storms - landslides - winds - currents A:
currents