Answer the following question given this paragraph: Most carcinogens produce mutations in genes that control the cell cycle. Q: Most carcinogens produce mutations in genes that control what? Choices: - ubiquitous cycle - digestive cycle - proteins cycle - cell cycle A:
cell cycle
Answer the following question given this paragraph: Q: What is a common name for the descriptive hypothesis that help to understand patterns of descent? Choices: - genetic trees - genetic order - gene mapping - evolutionary trees A:
evolutionary trees
Q: Answer the following question given this paragraph: Placental mammals get their name from the placenta. This is a spongy structure that develops during pregnancy only in placental mammals. You can see where a human placenta forms in Figure below . The placenta sustains the fetus while it grows inside the mother's uterus. It consists of membranes and blood vessels from both mother and fetus. It allows substances to pass between the mother's blood and that of the fetus. The fetus gets oxygen and nutrients from the mother. It passes carbon dioxide and other wastes to the mother. Q: What sustains the fetus while it grows inside the mother's uterus? Choices: - bacteria - endometrium - mitochondria - placenta A:
A: placenta
Question: Answer the following question given this paragraph: Energy Requirements Related to Levels of Activity The more active an animal is, the more energy is needed to maintain that activity, and the higher its BMR or SMR. The average daily rate of energy consumption is about two to four times an animal's BMR or SMR. Humans are more sedentary than most animals and have an average daily rate of only 1.5 times the BMR. The diet of an endothermic animal is determined by its BMR. For example: the type of grasses, leaves, or shrubs that an herbivore eats affects the number of calories that it takes in. The relative caloric content of herbivore foods, in descending order, is tall grasses > legumes > short grasses > forbs (any broad-leaved plant, not a grass) > subshrubs > annuals/biennials. Energy Requirements Related to Environment Animals adapt to extremes of temperature or food availability through torpor. Torpor is a process that leads to a decrease in activity and metabolism and allows animals to survive adverse conditions. Torpor can be used by animals for long periods, such as entering a state of hibernation during the winter months, in which case it enables them to maintain a reduced body temperature. During hibernation, ground squirrels can achieve an abdominal temperature of 0 C (32 F), while a bear's internal temperature is maintained higher at about 37 C (99 F). If torpor occurs during the summer months with high temperatures and little water, it is called estivation. Some desert animals use this to survive the harshest months of the year. Torpor can occur on a daily basis; this is seen in bats and hummingbirds. While endothermy is limited in smaller animals by surface to volume ratio, some organisms can be smaller and still be endotherms because they employ daily torpor during the part of the day that is coldest. This allows them to conserve energy during the colder parts of the day, when they consume more energy to maintain their body temperature. Q: Torpor, a process that leads to a decrease in activity and metabolism and allows animals to survive adverse conditions, includes what long winter 'sleep'? Choices: - fermentation - pollination - relaxation - hibernation A:
Answer: hibernation
*Question*
Answer the following question given this paragraph: External Fertilization External fertilization usually occurs in aquatic environments where both eggs and sperm are released into the water. After the sperm reaches the egg, fertilization takes place. Most external fertilization happens during the process of spawning where one or several females release their eggs and the male(s) release sperm in the same area, at the same time. The release. Q: What type of fertilization usually occurs in aquatic environments where both eggs and sperm are released into the water? Choices: - static - material - Internal - external A:
**Answer**
external
(Q).
Answer the following question given this paragraph: When an element gains one or more electrons, an anion is formed. Nonmetals typically become anions when they interact with other chemical species. Q: What is formed when an element gains one or more electrons? Choices: - cation - ion - neutron - anion A:
(A).
anion