16.5. Sex hormones in humans
A subsection of Biology, 0610, through 16. Reproduction
Listing 10 of 104 questions
During puberty, the hormones oestrogen and testosterone are involved in the development of the secondary sexual characteristics. State the name of the gland that produces each hormone. oestrogen testosterone Complete Table 3.1 by placing ticks (✓) in the boxes to show which hormones are involved in the development of each secondary sexual characteristic. Table 3.1 secondary sexual characteristic testosterone oestrogen body shape changes breast development facial hair voice deepening is a diagram of the uterus during pregnancy. A B C D State the letter on that identifies the structure which performs each of these functions. • exchange of substances between the fetus and the mother • protects the fetus from mechanical shock • transfers blood between the fetus and the placenta Outline the processes involved in labour and birth. The birthweights of 75 rats were measured and recorded within different birthweight ranges. The number of rats in each birthweight range is recorded in Table 3.2. Table 3.2 birthweight / g number of rats 5.5 – 5.9 6.0 – 6.4 6.5 – 6.9 7.0 – 7.4 7.5 – 7.9 8.0 – 8.4 8.5 – 8.9 State the most common birthweight range in Table 3.2. State the number of rats that are heavier than 6.9 g at birth in Table 3.2. State the type of variation shown by the data in Table 3.2.
0610_s22_qp_33
THEORY
2022
Paper 3, Variant 3
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For Examiner's Use shows the mean height of females from birth to 25 years of age. mean height / cm age / years State in which two year period the growth rate of females is most rapid. Table 2.1 lists similar information about males. Table 2.1 age of males / years mean height / cm Plot the data for males on the graph, , using the same axes. After the age of 2, at which two ages are the heights of males and females the same? and For Examiner's Use During the teenage years of both sexes changes happen to their bodies and their behaviour. State in which sex these changes normally occur first. Describe three of these changes that happen in males. 1. 2. 3. Name the hormone that triggers these changes in males. State the name given to this stage of development that happens during the teenage years.
0610_w07_qp_2
THEORY
2007
Paper 2, Variant 0
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For Examiner's Use shows the mean heights of female humans between birth and 25 years of age. age height females height For Examiner's Use Table 5.1 gives the mean heights of males over the same period of their lives. Table 5.1 age of males / years mean height / cm Plot the data for the males on . Plot your points and draw your line on . Between which ages is the growth rate in males fastest? At which two ages, after the age of 2 years, are males and females the same height? At what age is the average height of females 144 cm? Name the hormone that controls most of the changes that occur in females at puberty. Describe some of the changes, apart from increases in height or mass, that occur in females during puberty.
0610_w10_qp_22
THEORY
2010
Paper 2, Variant 2
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For Examiner's Use shows the mean heights of female humans between birth and 25 years of age. age height females height For Examiner's Use Table 5.1 gives the mean heights of males over the same period of their lives. Table 5.1 age of males / years mean height / cm Plot the data for the males on . Plot your points and draw your line on . Between which ages is the growth rate in males fastest? At which two ages, after the age of 2 years, are males and females the same height? At what age is the average height of females 144 cm? Name the hormone that controls most of the changes that occur in females at puberty. Describe some of the changes, apart from increases in height or mass, that occur in females during puberty.
0610_w10_qp_23
THEORY
2010
Paper 2, Variant 3
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Questions Discovered
104