AnswersPMHS Health Q2Heredity and Genetics

Gravity and Motion Answers

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1
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How can tight muscles result in back pain?

A
They contain sensitive nerves that become painful when tight.
B
They can constrict the nerves in the spinal column.
C
Tight muscles stretch surrounding tissues and organs.
D
They improve posture, which results in back pain.
2
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What is the BEST strategy to improve flexibility in your legs and back?

A
concentrating your stretching on your legs and back
B
concentrating your stretching everywhere but your legs and back
C
choosing safe stretches
D
avoiding stretching until after the desired flexibility is achieved
3

Which of the following BEST describes the exercise principle of specificity?

A
maintaining a challenging workout
B
establishing a regular exercise schedule
C
targeting a particular area for improvement
D
shifting the types of exercises in a workout
4

Which stretching exercise is usually NOT recommended for most people other than professional athletes?

A
static stretching
B
dynamic stretching
C
isometric stretching
D
ballistic stretching
5

Why do activities like yoga, ballet, and gymnastics require better than normal flexibility?

Answer:

Yoga, ballet, and gymnastics require better-than-normal flexibility because they involve large ranges of motion, extended body positions, and controlled movements that ordinary daily activities usually do not require.

7

A full stretching session should take between __________.

A
five and ten minutes
B
half an hour to an hour
C
one and two hours
D
ten and twenty minutes
8

Why is a recovery period between bouts of exercise important?

A
Recovery periods reduce muscle performance.
B
Resting between workouts helps to prevent injuries.
C
Recovery periods stimulate metabolism.
D
Resting enhances muscle soreness and fatigue.
9

Summarize the role of a genetic counselor.

Answer:

Genetic counselors are important because they help families to identify the probability of developing or transmitting a hereditary disease. In addition, they can provide information about appropriate genetic testing to help in the decision-making process. Finally, they provide support throughout the genetic testing process.

11

Why might a teenage girl who is using birth control be more at risk for becoming pregnant than a woman in her thirties?

Answer:

Some forms of birth control may be less effective for teenage girls because their bodies haven't fully matured and settled into a regular menstrual cycle.

12

List three strategies that teens can use to avoid becoming involved in sexual activity?

Answer:

To avoid becoming involved in sexual activity, teens can go on group dates, avoid unsupervised parties, limit dating to public places, refrain from using drugs or alcohol, and be fully aware of one's own motivation for abstinence.

13

Explain the three stages of labor.

Answer:

The three stages of labor are active labor, birth of the baby, and delivery of the placenta. Active labor lasts an average of 8 hours and is when the baby begins to descend. The cervix dilates from 4 to 10 centimeters through contractions. The birth of the baby is when the cervix has reached the maximum 10 centimeters and the mother starts pushing the baby's head out. This stage may last from minutes to hours. The final stage is the delivery of the placenta, which includes mild contractions and lasts on average 5 to 10 minutes. The umbilical cord and the placenta are delivered vaginally.

14

Complex genetic diseases are different from single-gene diseases because they __________.

A
cause death almost instantly
B
are caused by mutations to multiple genes
C
are more easily passed from one generation to the next
D
cannot be affected by lifestyle choices
15

Which of the following is NOT included in the first trimester?

A
heart begins beating
B
arm and leg buds appear
C
umbilical cord develops
D
eyes and brain complete formation
18

Read the sentence.Conservationists are considering urban runoff and they are tracking population growth but the magnitude of the situation has not been determined.According to The Elements of Style, what is the correct way to punctuate this sentence?

A
Conservationists are considering urban runoff and they are tracking population growth, but the magnitude of the situation has not been determined.
B
Conservationists are considering urban runoff, and they are tracking population growth but, the magnitude of the situation has not been determined.
C
Conservationists are considering urban runoff, and they are tracking population growth, but the magnitude of the situation has not been determined.
D
no change
19

According to The Elements of Style, which sentence is written in active voice?

A
The acceptance speech was given by the award winners.
B
The pennants were won by the championship team.
C
A memorable evening was had by all who attended the event.
D
The workers took precautions while digging along power lines.
20

According to "Introduction to Cultural Rebellion: Mid-Twentieth-Century Voices," which best states a key motivating factor for postwar American authors in a variety of genres?

A
an agreement with mainstream political and social values
B
an indifference to mainstream political and social values
C
a global expansion of mainstream political and social values
D
a disagreement with mainstream political and social values

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