Q: Cells that undergo cell division continue to have their telomeres shortened, thus telomere shortening is associated with what life process? Read this paragraph and choose the correct option from the provided answers: Telomerase and Aging Cells that undergo cell division continue to have their telomeres shortened because most somatic cells do not make telomerase. This essentially means that telomere shortening is associated with aging. With the advent of modern medicine, preventative health care, and healthier lifestyles, the human life span has increased, and there is an increasing demand for people to look younger and have a better quality of life as they grow older. In 2010, scientists found that telomerase can reverse some age-related conditions in mice. This may have potential in [2] regenerative medicine. Telomerase-deficient mice were used in these studies; these mice have tissue atrophy, stem 2. Jaskelioff et al. , "Telomerase reactivation reverses tissue degeneration in aged telomerase-deficient mice," Nature 469 (2011): 102-7. Choices: - metabolism - reducing - reproduction - aging A:
aging

Q: Worms grow to adult size without going through what stage? Read this paragraph and choose the correct option from the provided answers: In some species, the same individual produces both sperm and eggs. But worms mate to exchange sperm, rather than self-fertilizing their own eggs. Fertilized eggs are deposited in a mucous cocoon. Offspring emerge from the cocoon looking like small adults. They grow to adult size without going through a larval stage. Choices: - egg - development - growth - larval A:
larval

Q: Q: What do you call an animal in which the embryo, often termed a joey, is born immature and must complete its development outside the mother's body? Read this paragraph and choose the correct option from the provided answers: All other mammals give birth to live young and belong to one of two different categories, the marsupials and the placental mammals. A marsupial is an animal in which the embryo, which is often called a joey, is born at an immature stage. Development must be completed outside the mother's body. Most female marsupials have an abdominal pouch or skin fold where there are mammary glands. The pouch is a place for completing the development of the baby. Although blind, without fur, and with only partially formed hind legs, the tiny newborns have well developed forelimbs with claws that enable them to climb their way into their mother's pouch where they drink their mother's milk and continue their development. Marsupials include kangaroos, koalas, and opossums. Other marsupials are the wallaby and the Tasmanian Devil. Most marsupials live in Australia and nearby areas. ( Figure below ). Choices: - placental mammal - monotreme - eukaryotic - marsupial A:
A: marsupial

Question: Q: Inside a cylinder, thermal energy is converted to what type of energy of the moving piston? Read this paragraph and choose the correct option from the provided answers: Thermal energy is converted to the kinetic energy of the moving piston inside the cylinder. The moving piston, in turn, can be used to turn a turbine or do other useful work. Choices: - residual energy - horsepower - electrochemical energy - kinetic energy A:
Answer: kinetic energy

*Question*
Q: Virtually all of the effects of pregnancy can be attributed in some way to the influence of what? Read this paragraph and choose the correct option from the provided answers: Effects of Hormones Virtually all of the effects of pregnancy can be attributed in some way to the influence of hormonesparticularly estrogens, progesterone, and hCG. During weeks 712 from the LMP, the pregnancy hormones are primarily generated by the corpus luteum. Progesterone secreted by the corpus luteum stimulates the production of decidual cells of the endometrium that nourish the blastocyst before placentation. As the placenta develops and the corpus luteum degenerates during weeks 1217, the placenta gradually takes over as the endocrine organ of pregnancy. The placenta converts weak androgens secreted by the maternal and fetal adrenal glands to estrogens, which are necessary for pregnancy to progress. Estrogen levels climb throughout the pregnancy, increasing 30-fold by childbirth. Estrogens have the following actions: They suppress FSH and LH production, effectively preventing ovulation. (This function is the biological basis of hormonal birth control pills. ) They induce the growth of fetal tissues and are necessary for the maturation of the fetal lungs and liver. They promote fetal viability by regulating progesterone production and triggering fetal synthesis of cortisol, which helps with the maturation of the lungs, liver, and endocrine organs such as the thyroid gland and adrenal gland. They stimulate maternal tissue growth, leading to uterine enlargement and mammary duct expansion and branching. Relaxin, another hormone secreted by the corpus luteum and then by the placenta, helps prepare the mother's body for childbirth. It increases the elasticity of the symphysis pubis joint and pelvic ligaments, making room for the growing fetus and allowing expansion of the pelvic outlet for childbirth. Relaxin also helps dilate the cervix during labor. Choices: - proteins - enzymes - acids - hormones A:
**Answer**
hormones

Q: Q: Name the physicist who discovered radioactivity? Read this paragraph and choose the correct option from the provided answers: Radioactivity was discovered in 1896 by a French physicist named Antoine Henri Becquerel. Becquerel was experimenting with uranium, which glows after being exposed to sunlight. Becquerel wanted to see if the glow was caused by rays of energy, like rays of light and X-rays. He placed a bit of uranium on a photographic plate. The plate was similar to film that's used today to take X-rays. You can see an example of an X-ray in Figure below . As Becquerel predicted, the uranium left an image on the photographic plate. This meant that uranium gives off rays after being exposed to sunlight. Choices: - louis pasteur - neal degrasse tyson - albert einstein - antoine henri becquerel A:
A: antoine henri becquerel