Question 1

In pubescent boys, a temporary enlargement of the breasts is caused by

Accepted Answer

During puberty, some boys may experience a temporary enlargement of their breasts due to an increase in estrogen production. This is known as gynecomastia, and it typically resolves on its own within a few months to two years. Testosterone production also increases during puberty but does not typically lead to breast enlargement. Inhibin and interstitial cell hormone (ISCH) are involved in regulating reproductive function and do not play a role in breast development.

Question 2

Research on condom use among young (20- to 34-year-old) unmarried Canadians found that

Accepted Answer

Research often shows that younger individuals are more likely to use condoms, and usage tends to decrease as people age and enter more stable relationships.

Question 3

Daniel has just experienced his first ejaculation. If he is typical of most boys, how old is he?

Accepted Answer

According to most experts, boys typically experience their first ejaculation between the ages of 11 and 15, with the average age being around 13. Therefore, option C is the most likely answer. Options A and B are too early for a typical age of ejaculation, and D is on the older side but still within the normal range.

Question 4

Maurice is 14 years old and feels like he is the only one of his peers who has not yet had sex. He should know that a recent study from the University of Alberta found that the average age for first intercourse is _______ years of age.

Accepted Answer

The average age for first intercourse, according to a study from the University of Alberta, is 17 years of age. This information can help normalize Maurice's experience and reassure him that many teenagers have not had sex by the age of 14.

Question 5

Common-law relationships refer to

Accepted Answer

Common-law relationships refer to two people who live together without being legally married. It does not specify the gender of the individuals. Therefore, option A (two people of the opposite sex who live together without being legally married) and option B (two people of the same sex who live together) are incorrect. Option D (two people of the opposite sex who live together and are engaged to be married) is also incorrect as the individuals must be living together for a specified time period as per the laws of the particular jurisdiction.

Question 6

If a man has had five non-overlapping sex partners in the last three years, then he is practising

Accepted Answer

Serial monogamy refers to the practice of being in multiple monogamous relationships in succession over a period of time. In this case, the man has had five partners but only one at a time, which fits the definition of serial monogamy. Polyandry refers to a woman being married to multiple men at the same time, celibacy refers to abstaining from sexual activity, and polyamory refers to engaging in multiple romantic and sexual relationships simultaneously.

Question 7

In adolescent boys, nocturnal emission usually begins

Accepted Answer

The answer of In adolescent boys, nocturnal emission usually begins
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Question 8

Recent years have seen a sharp increase in the number of

Accepted Answer

According to various studies and demographic data, the trend of young people choosing to remain single has been on the rise in recent years. This could be due to various factors such as prioritizing career and personal growth, changing societal norms, and economic instability.

Question 9

Singlehood is chosen as the most common lifestyle for individuals

Accepted Answer

Singlehood is most common among individuals in their twenties, as they are in the stage of exploring their career paths and personal growth. While divorce and career development may also contribute to singlehood, they are not as commonly associated with the choice to remain single as being in one's twenties. Being in one's early thirties may also contribute to singlehood, but it is less common than in one's twenties.

Question 10

Excessive androgen production in girls causes

Accepted Answer

Excessive androgen production in girls can lead to the darkening or thickening of facial hair, as androgens are male hormones that can cause male-pattern hair growth.

Question 11

By the time he is 13 years of age, Thomas is likely to have developed

Accepted Answer

By age 13, most boys have gone through puberty and experienced a growth spurt. One of the physical changes is that their voice becomes lower due to the growth of the larynx or voice box. The other options (A, C, and D) are more likely to occur during or after later stages of puberty, typically starting at age 15 or older.

Question 12

Turque and Tina are friends who also have sex with each other. The most likely outcome of their arrangement is that they will

Accepted Answer

Since Turque and Tina are friends with benefits, the arrangement is more focused on the physical aspect of their relationship rather than romantic feelings. Therefore, they are likely to remain friends even if they decide to stop having sex. While forming a romantic relationship or getting married may be possible outcomes, they are less likely in this scenario. Similarly, a divorce is not applicable because there is no indication that they would get married in the first place.

Question 13

"Singlehood," not marriage, is now the most common lifestyle among people in their

Accepted Answer

According to recent research and statistics, people in their 20s are the most common age group to choose the single lifestyle over marriage. The percentage of single individuals in their 20s has been steadily increasing over the past few decades, with many choosing to focus on their careers, education, and personal growth before settling down in a committed relationship.

Question 14

Underarm hair appears for boys on average at age

Accepted Answer

The answer of Underarm hair appears for boys on average...

Question 15

In young men approaching age 18, which of the following hormones prevents any further increases in height?

Accepted Answer

Estrogen, despite being typically associated with female development, plays a crucial role in closing the epiphyseal plates in bones, which stops growth in height. This occurs in both males and females, with estrogen being produced in males by the aromatization of testosterone.

Question 16

The pattern of sexual partners for most single people would be described as

Accepted Answer

Serial monogamy is the pattern of having a series of monogamous relationships that are usually sexual and exclusive, but not necessarily leading to long-term commitment or marriage. This is the most common pattern for single people, where they have one sexual partner at a time for a period of time before moving on to another partner. Casual relations and love relationships with no commitment are less common, while sexual relations leading to commitment would imply a more direct and intentional path towards long-term partnership or marriage.

Question 17

The most recent Canadian statistics show that approximately ________ of Canadian youth have had sexual intercourse by the age of 19.

Accepted Answer

The most recent Canadian statistics indicate that approximately 65% of Canadian youth have had sexual intercourse by the age of 19. This figure reflects the sexual behaviors and choices among the youth population in Canada.

Question 18

Benjamin has noticed that his voice is starting to crack and that it changes from a high-pitched soprano to a lower tone with little warning. If Benjamin is typical of most boys, how old is he?

Accepted Answer

The answer of Benjamin has noticed that his voice is...

Question 19

Over the last several years, the teen pregnancy rate in Canada has

Accepted Answer

According to the latest data from Statistics Canada, the teen pregnancy rate has fallen significantly in Canada over the last several years. The rate declined by 47% between 1996 and 2015, and by 38% between 2005 and 2015.

Question 20

Denis is in love with his friend Dana, but has settled for being friends with benefits with her, in hopes that she will come to love him eventually. The least likely outcome of this scenario is that they

Accepted Answer

The least likely outcome in this scenario, given the current dynamics and Denis's unreciprocated feelings, is that they fall in love and have a relationship. This is because Dana's current feelings or stance on their relationship isn't mentioned as being aligned with Denis's hopes, making this outcome less probable without a change in her feelings.

Quiz 12: Sexuality Across the Life Span and Sexual Health Education