Answer the following question given this paragraph: Hair Growth Hair grows and is eventually shed and replaced by new hair. This occurs in three phases. The first is the anagen phase, during which cells divide rapidly at the root of the hair, pushing the hair shaft up and out. The length of this phase is measured in years, typically from 2 to 7 years. The catagen phase lasts only 2 to 3 weeks, and marks a transition from the hair follicle's active growth. Finally, during the telogen phase, the hair follicle is at rest and no new growth occurs. At the end of this phase, which lasts about 2 to 4 months, another anagen phase begins. The basal cells in the hair matrix then produce a new hair follicle, which pushes the old hair out as the growth cycle repeats itself. Hair typically grows at the rate of 0.3 mm per day during the anagen phase. On average, 50 hairs are lost and replaced per day. Hair loss occurs if there is more hair shed than what is replaced and can happen due to hormonal or dietary changes. Hair loss can also result from the aging process, or the influence of hormones. Q: Anagen, catagen and telogen are phases in the growth of what, which involves the root and follicle? Choices: - brain - teeth - bone - hair A:
hair
Answer the following question given this paragraph: Coal, oil and natural gas are all fossil fuels formed from the remains of once living organisms. Q: Coal, oil and natural gas are types of what formed from the remains of once living organisms? Choices: - living fossils - fossil compounds - crop fuels - fossil fuels A:
fossil fuels
Q: Answer the following question given this paragraph: Courtship behaviors occur in many other species. For example, males in some species of whales have special mating songs to attract females as mates. Frogs croak for the same reason. Male deer clash antlers to court females. Male jumping spiders jump from side to side to attract mates. Q: What type of behavior is frogs croaking or deer clashing antlers an example of? Choices: - instincts - learned behavior - mating - courtship A:
A: courtship
Question: Answer the following question given this paragraph: Some women experience cramping and pain before and during menstruation. Q: Some women experience cramping and pain before and during what monthly cycle? Choices: - inflammation - reproduction - deformation - menstruation A:
Answer: menstruation
*Question*
Answer the following question given this paragraph: What makes the heart form during development? What makes the skin form? What makes a structure become an arm instead of a leg? These processes occur during development because of a highly specific pattern of gene expression. This intensely regulated pattern of gene expression turns genes on in the right cell at the right time, such that the resulting proteins can perform their necessary functions to ensure proper development. Transcription factors play an extremely important role during development. Many of these proteins can be considered master regulatory proteins , in the sense that they either activate or deactivate the transcription of other genes and, in turn, these secondary gene products can regulate the expression of still other genes in a regulatory cascade. Homeobox genes and gap genes are important classes of transcription factors utilized during development. Q: What kind of proteins either activate or deactivate the transcription of other genes? Choices: - carbon proteins - perfect regulatory proteins - master complex proteins - master regulatory proteins A:
**Answer**
master regulatory proteins
(Q).
Answer the following question given this paragraph: Evolution is a change in the characteristics of living things over time. Evolution occurs by natural selection. Q: What term is used to describe a change in the characteristics of living things over time? Choices: - customization - generation - reproduction - evolution A:
(A).
evolution