Biology short answer

Question 1

state how a malfunction in the structure that you identified ( uterus, fallopian tubes or ovaries) could interfere with an individual ability to reproduce

Answer 1

Ovaries-if you don’t have eggs in your ovaries or a low supply of eggs
Uterus- uterine lining is not thick enough
Fallopian tubes- if there is a blockage in your fallopian tubes

Question 2

explain why it would be harmful for a human mothers blood to pass across the placenta and into the fetus

Answer 2

The lambs blood mixed with the human mothers blood can cause the baby to die

Question 3

-state how an artificial placenta would be of benefit to the lungs of premature infants

Answer 3

The artificial placenta can supply oxygen to the lungs

Question 4

Explain why the lambs blood must be filtered as it circulates through the artificial placenta

Answer 4

It can remove waste from the blood

Question 5

State ONE reason why premature lambs were likely used as model organisms in this study rather than mice

Answer 5

Lambs are more similar to human fetuses more than mice are

Question 6

Describe one function of the placenta during the internal development of an offspring

Answer 6

the placenta supplies oxygen and nutrients to the fetus as well as protects the baby

Question 7

Describe one advantage for an offspring to develop internally instead of externally

Answer 7

The offspring could get eaten or killed by predators outside of the mother uterus

Question 8

Identify one factor, besides genetics, that could influence the development of human offspring

Answer 8

If you smoke or drink throughout the pregnancy

Question 9

Detecting pregnancy (five signs)

Answer 9

1) nausea
2)late period
3) cravings
4)vomiting
5) increase in appetite

Question 10

Pregnancy tests (2 types)

Answer 10

Blood test and urine test

Question 11

Danger signs during pregnancy (5 signs)

Answer 11

1) getting your period
2) abdominal pain
3) you don’t feel the baby moving
4) high fever

Question 12

Test to detect birth defects during pregnancy

Answer 12

AFP screening
Amniocentesis
Ultrasound/sonogram

Question 13

Stages of labor and childbirth

Answer 13

dilation of cervix, delivery of baby, delivery of placenta

Question 14

Stages of a developing baby

Answer 14

Stage 1: zygote — day 1 to 7
Stage 2: embryo — day 8 to week 8
Stage 3: fetus — week 9 to week 40

Question 15

4 stages of the human life cycle

Answer 15

1. infancy/toddler
2. childhood
3. adolescence /teenager
4. adulthood

Question 16

sexual reproductions

Answer 16

Process 1: meiosis
Process 2: fertilization
Process 3: mitosis
The embryo— differentiation