Directly related questions
- 22N.1A.HL.TZ0.40: What is the role of HCG in pregnancy? A. It is secreted by the embryo to stimulate progesterone...
- 22N.1A.HL.TZ0.40: What is the role of HCG in pregnancy? A. It is secreted by the embryo to stimulate progesterone...
- 22N.1A.HL.TZ0.39: Which step occurs in both spermatogenesis and oogenesis? A. First division of meiosis is stopped...
- 22N.1A.HL.TZ0.39: Which step occurs in both spermatogenesis and oogenesis? A. First division of meiosis is stopped...
- SPM.1A.SL.TZ0.19: What conveys messages from the central nervous system to an endocrine gland? A. Sensory...
- SPM.1A.SL.TZ0.19: What conveys messages from the central nervous system to an endocrine gland? A. Sensory...
- SPM.1A.SL.TZ0.19: What conveys messages from the central nervous system to an endocrine gland? A. Sensory...
- SPM.1A.SL.TZ0.19: What conveys messages from the central nervous system to an endocrine gland? A. Sensory...
- SPM.1A.SL.TZ0.22: The first day of the menstrual cycle is when menstruation begins. What occurs around day 15 of...
- SPM.1A.SL.TZ0.22: The first day of the menstrual cycle is when menstruation begins. What occurs around day 15 of...
- SPM.1A.SL.TZ0.22: The first day of the menstrual cycle is when menstruation begins. What occurs around day 15 of...
- SPM.1A.SL.TZ0.22: The first day of the menstrual cycle is when menstruation begins. What occurs around day 15 of...
Sub sections and their related questions
D3.1.1. Differences between sexual and asexual reproduction
NoneD3.1.2. Role of meiosis and fusion of gametes in the sexual life cycle
NoneD3.1.3. Differences between male and female sexes in sexual reproduction
-
21M.2.SL.TZ1.6a:
Describe the genetic and hormonal control of male sexual characteristics in a human.
-
21M.2.SL.TZ1.6a:
Describe the genetic and hormonal control of male sexual characteristics in a human.
-
21M.2.SL.TZ1.a:
Describe the genetic and hormonal control of male sexual characteristics in a human.
D3.1.4. Anatomy of the human male and female reproductive systems
- 21M.1A.SL.TZ2.30: What is a similarity between the testes of males and the ovaries of females in humans? A. They...
-
19M.1A.SL.TZ2.31:
The diagram shows the human male reproductive system.
[Source: logika600/Shutterstock]
Which numbers indicate a gland providing fluid for sperm and a tube that transports sperm only?
- 22N.1A.HL.TZ0.39: Which step occurs in both spermatogenesis and oogenesis? A. First division of meiosis is stopped...
- 21M.1A.SL.TZ2.30: What is a similarity between the testes of males and the ovaries of females in humans? A. They...
-
19M.1A.SL.TZ2.31:
The diagram shows the human male reproductive system.
[Source: logika600/Shutterstock]
Which numbers indicate a gland providing fluid for sperm and a tube that transports sperm only?
- 22N.1A.HL.TZ0.39: Which step occurs in both spermatogenesis and oogenesis? A. First division of meiosis is stopped...
D3.1.5. Changes during the ovarian and uterine cycles and their hormonal regulation
- 19N.1A.SL.TZ0.30: On the graph, which curve represents the change in FSH levels during the menstrual cycle?
- 20N.1A.SL.TZ0.30: A female is overweight, feels cold and tired, and often fails to ovulate during the menstrual...
-
21M.1A.SL.TZ1.28:
The graph shows the blood levels of hormones associated with the menstrual cycle.
[Source: By OpenStax College - Anatomy & Physiology, Connexions Web site. http://cnx.org/content/col11496/1.6/, Jun 19, 2013., CC BY 3.0 (https://creativecommons.org/licenses/by/3.0/), https://commons.wikimedia.org/w/index.php?curid=30148641.]
Which line on the graph represents progesterone?
A. Line A
B. Line B
C. Line C
D. Line D
- 22M.1A.SL.TZ2.29: What is an example of negative feedback in the menstrual cycle? A. High levels of estrogen...
-
19M.1A.SL.TZ1.30:
The diagram shows the human female reproductive system.
[Source: © International Baccalaureate Organization 2019]
What is produced by structure X?
A. FSH
B. X chromosomes
C. Fertilized eggs
D. Estrogen and progesterone
- 19M.2.SL.TZ2.3c: Hormones are distributed throughout the body by the blood. Outline the roles of two reproductive...
-
21N.1A.SL.TZ0.30:
What is a function of luteinizing hormone (LH) in the female menstrual cycle?
A. To promote secondary sexual characteristics
B. To inhibit progesterone secretion
C. To stimulate the follicle to release estrogen
D. To trigger ovulation
-
19M.1A.SL.TZ2.30:
The diagram shows the human female reproductive system
[Source: © International Baccalaureate Organization 2019]
Which labels indicate where fertilization occurs and where luteinizing hormone (LH) acts?
- SPM.1A.SL.TZ0.22: The first day of the menstrual cycle is when menstruation begins. What occurs around day 15 of...
- SPM.1A.SL.TZ0.22: The first day of the menstrual cycle is when menstruation begins. What occurs around day 15 of...
- SPM.1A.SL.TZ0.22: The first day of the menstrual cycle is when menstruation begins. What occurs around day 15 of...
- 19N.1A.SL.TZ0.30: On the graph, which curve represents the change in FSH levels during the menstrual cycle?
- 19N.1A.SL.TZ0.30: On the graph, which curve represents the change in FSH levels during the menstrual cycle?
- 19N.1A.SL.TZ0.30: On the graph, which curve represents the change in FSH levels during the menstrual cycle?
- 19N.1A.SL.TZ0.30: On the graph, which curve represents the change in FSH levels during the menstrual cycle?
- 19N.1A.SL.TZ0.30: On the graph, which curve represents the change in FSH levels during the menstrual cycle?
- 20N.1A.SL.TZ0.30: A female is overweight, feels cold and tired, and often fails to ovulate during the menstrual...
-
21M.1A.SL.TZ1.28:
The graph shows the blood levels of hormones associated with the menstrual cycle.
[Source: By OpenStax College - Anatomy & Physiology, Connexions Web site. http://cnx.org/content/col11496/1.6/, Jun 19, 2013., CC BY 3.0 (https://creativecommons.org/licenses/by/3.0/), https://commons.wikimedia.org/w/index.php?curid=30148641.]
Which line on the graph represents progesterone?
A. Line A
B. Line B
C. Line C
D. Line D
- 22M.1A.SL.TZ2.29: What is an example of negative feedback in the menstrual cycle? A. High levels of estrogen...
-
19M.1A.SL.TZ1.30:
The diagram shows the human female reproductive system.
[Source: © International Baccalaureate Organization 2019]
What is produced by structure X?
A. FSH
B. X chromosomes
C. Fertilized eggs
D. Estrogen and progesterone
- 19M.2.SL.TZ2.3c: Hormones are distributed throughout the body by the blood. Outline the roles of two reproductive...
- 19M.2.SL.TZ2.c: Hormones are distributed throughout the body by the blood. Outline the roles of two reproductive...
-
21N.1A.SL.TZ0.30:
What is a function of luteinizing hormone (LH) in the female menstrual cycle?
A. To promote secondary sexual characteristics
B. To inhibit progesterone secretion
C. To stimulate the follicle to release estrogen
D. To trigger ovulation
-
19M.1A.SL.TZ2.30:
The diagram shows the human female reproductive system
[Source: © International Baccalaureate Organization 2019]
Which labels indicate where fertilization occurs and where luteinizing hormone (LH) acts?
- SPM.1A.SL.TZ0.22: The first day of the menstrual cycle is when menstruation begins. What occurs around day 15 of...
D3.1.6. Fertilization in humans
NoneD3.1.7. Use of hormones in in vitro fertilization (IVF) treatment
NoneD3.1.8. Sexual reproduction in flowering plants
- 19M.2.SL.TZ2.4c: Successful sexual reproduction in flowering plants depends on several essential processes....
- 19M.1A.SL.TZ2.21: If seeds of an unknown species of plant are discovered, what assumption can be made about the...
- 19M.1B.SL.TZ2.1c: After fertilization, seeds of T. grandiflora form in a small pod. If you were provided with Petri...
-
19M.1A.SL.TZ1.32:
The image shows a cross-section of a flower.
[Source: © International Baccalaureate Organization 2019]
Where does production of haploid gametes occur?
A. I and II only
B. III and IV only
C. I and III only
D. II and IV only
- 19N.1A.SL.TZ0.34: A pollen tube grows down the style to an egg inside the ovary of a flower. What is the next...
-
23M.2.SL.TZ2.3b:
Structure III is the ovary. Outline the processes that occur in the ovary.
- 23M.2.SL.TZ2.2a: State how many chromosomes there would be in male or female gametes of L. purpureus.
- 19M.2.SL.TZ2.4c: Successful sexual reproduction in flowering plants depends on several essential processes....
- 19M.2.SL.TZ2.c: Successful sexual reproduction in flowering plants depends on several essential processes....
- 19M.1A.SL.TZ2.21: If seeds of an unknown species of plant are discovered, what assumption can be made about the...
- 19M.1B.SL.TZ2.c: After fertilization, seeds of T. grandiflora form in a small pod. If you were provided with Petri...
-
19M.1A.SL.TZ1.32:
The image shows a cross-section of a flower.
[Source: © International Baccalaureate Organization 2019]
Where does production of haploid gametes occur?
A. I and II only
B. III and IV only
C. I and III only
D. II and IV only
- 19N.1A.SL.TZ0.34: A pollen tube grows down the style to an egg inside the ovary of a flower. What is the next...
-
23M.2.SL.TZ2.3b:
Structure III is the ovary. Outline the processes that occur in the ovary.
-
23M.2.SL.TZ2.b:
Structure III is the ovary. Outline the processes that occur in the ovary.
- 23M.2.SL.TZ2.2a: State how many chromosomes there would be in male or female gametes of L. purpureus.
- 23M.2.SL.TZ2.a: State how many chromosomes there would be in male or female gametes of L. purpureus.
D3.1.9. Features of an insect-pollinated flower
-
19N.2.SL.TZ0.8a:
Draw a half-view of an animal-pollinated flower.
- 19M.2.SL.TZ2.1b.i: Identify the structure labelled X.
-
23M.2.SL.TZ2.3a:
State the name and function of structures I and II.
Structure I name and function: ..............................................................................................................
..........................................................................................................................................................
Structure II name and function: .............................................................................................................
..........................................................................................................................................................
- 23M.2.SL.TZ2.3c: Structure IV contains a gland that secretes a sugary liquid. Suggest a benefit to the plant of...
-
19N.2.SL.TZ0.a:
Draw a half-view of an animal-pollinated flower.
- 19M.2.SL.TZ2.b.i: Identify the structure labelled X.
-
23M.2.SL.TZ2.3a:
State the name and function of structures I and II.
Structure I name and function: ..............................................................................................................
..........................................................................................................................................................
Structure II name and function: .............................................................................................................
..........................................................................................................................................................
- 23M.2.SL.TZ2.3c: Structure IV contains a gland that secretes a sugary liquid. Suggest a benefit to the plant of...
-
23M.2.SL.TZ2.a:
State the name and function of structures I and II.
Structure I name and function: ..............................................................................................................
..........................................................................................................................................................
Structure II name and function: .............................................................................................................
..........................................................................................................................................................
- 23M.2.SL.TZ2.c: Structure IV contains a gland that secretes a sugary liquid. Suggest a benefit to the plant of...
D3.1.10. Methods of promoting cross-pollination
NoneD3.1.11. Self-incompatibility mechanisms to increase genetic variation within a species
NoneD3.1.12. Dispersal and germination of seeds
- 19M.2.SL.TZ2.4c: Successful sexual reproduction in flowering plants depends on several essential processes....
- 23M.1A.SL.TZ1.32: What is always needed for seed germination? A. Light B. Oxygen C. Carbon dioxide D. Fertilizer
- 19M.2.SL.TZ2.4c: Successful sexual reproduction in flowering plants depends on several essential processes....
- 19M.2.SL.TZ2.c: Successful sexual reproduction in flowering plants depends on several essential processes....
- 23M.1A.SL.TZ1.32: What is always needed for seed germination? A. Light B. Oxygen C. Carbon dioxide D. Fertilizer
D3.1.13. Control of the developmental changes of puberty by gonadotropin-releasing hormone and steroid sex hormones
- SPM.1A.SL.TZ0.19: What conveys messages from the central nervous system to an endocrine gland? A. Sensory...
- SPM.1A.SL.TZ0.19: What conveys messages from the central nervous system to an endocrine gland? A. Sensory...
- SPM.1A.SL.TZ0.19: What conveys messages from the central nervous system to an endocrine gland? A. Sensory...
- SPM.1A.SL.TZ0.19: What conveys messages from the central nervous system to an endocrine gland? A. Sensory...
D3.1.14. Spermatogenesis and oogenesis in humans
-
21M.2.HL.TZ2.5b:
Outline how sperm are produced from diploid cells in the testis and how this production can be sustained over many decades of adult life.
- 23M.1A.HL.TZ2.39: At what stage of spermatogenesis does the first division of meiosis occur? A. Spermatogonium to...
-
21M.2.HL.TZ2.5b:
Outline how sperm are produced from diploid cells in the testis and how this production can be sustained over many decades of adult life.
-
21M.2.HL.TZ2.b:
Outline how sperm are produced from diploid cells in the testis and how this production can be sustained over many decades of adult life.
- 23M.1A.HL.TZ2.39: At what stage of spermatogenesis does the first division of meiosis occur? A. Spermatogonium to...
D3.1.15. Mechanisms to prevent polyspermy
- 22M.1A.HL.TZ1.37: Which mechanism prevents polyspermy? A. Polar body formation B. The acrosome reaction C....
-
21N.2.HL.TZ0.2d:
Explain the mechanism that prevents polyspermy during fertilization.
- 23M.1A.HL.TZ1.40: What happens in the acrosome reaction? A. Enzymes digest the zona pellucida around an ovum,...
- 22M.1A.HL.TZ1.37: Which mechanism prevents polyspermy? A. Polar body formation B. The acrosome reaction C....
- 22M.1A.HL.TZ1.37: Which mechanism prevents polyspermy? A. Polar body formation B. The acrosome reaction C....
- 22M.1A.HL.TZ1.37: Which mechanism prevents polyspermy? A. Polar body formation B. The acrosome reaction C....
- 22M.1A.HL.TZ1.37: Which mechanism prevents polyspermy? A. Polar body formation B. The acrosome reaction C....
- 22M.1A.HL.TZ1.37: Which mechanism prevents polyspermy? A. Polar body formation B. The acrosome reaction C....
-
21N.2.HL.TZ0.2d:
Explain the mechanism that prevents polyspermy during fertilization.
-
21N.2.HL.TZ0.d:
Explain the mechanism that prevents polyspermy during fertilization.
- 23M.1A.HL.TZ1.40: What happens in the acrosome reaction? A. Enzymes digest the zona pellucida around an ovum,...
D3.1.16. Development of a blastocyst and implantation in the endometrium
NoneD3.1.17. Pregnancy testing by detection of human chorionic gonadotropin secretion
- 22M.1A.HL.TZ1.40: What is the role of HCG in early pregnancy? A. It prevents the degeneration of the corpus luteum...
-
21M.2.HL.TZ1.4c:
State one use of monoclonal antibodies.
-
21M.1A.HL.TZ1.39:
The pregnancy test for humans is based on detection of the hormone HCG. What is the reason for detection of this hormone indicating pregnancy?
A. HCG is involved in milk production.
B. HCG production is blocked by negative feedback during menstruation.
C. HCG is produced by an embryo.
D. HCG is released during the acrosome reaction.
-
21M.1A.HL.TZ2.40:
What function is maintained as a result of the release of HCG?
A. Production of milk by the mammary glands
B. Release of oxytocin by the posterior pituitary gland
C. Production of FSH by the anterior pituitary gland
D. Production of progesterone by the ovary
- 22N.1A.HL.TZ0.40: What is the role of HCG in pregnancy? A. It is secreted by the embryo to stimulate progesterone...
- 23M.1A.HL.TZ1.37: What is used in a pregnancy test kit? A. Monoclonal antibodies against hybridoma cells B. ...
- 22M.1A.HL.TZ1.40: What is the role of HCG in early pregnancy? A. It prevents the degeneration of the corpus luteum...
- 22M.1A.HL.TZ1.40: What is the role of HCG in early pregnancy? A. It prevents the degeneration of the corpus luteum...
- 22M.1A.HL.TZ1.40: What is the role of HCG in early pregnancy? A. It prevents the degeneration of the corpus luteum...
- 22M.1A.HL.TZ1.40: What is the role of HCG in early pregnancy? A. It prevents the degeneration of the corpus luteum...
- 22M.1A.HL.TZ1.40: What is the role of HCG in early pregnancy? A. It prevents the degeneration of the corpus luteum...
-
21M.2.HL.TZ1.4c:
State one use of monoclonal antibodies.
-
21M.2.HL.TZ1.c:
State one use of monoclonal antibodies.
-
21M.1A.HL.TZ1.39:
The pregnancy test for humans is based on detection of the hormone HCG. What is the reason for detection of this hormone indicating pregnancy?
A. HCG is involved in milk production.
B. HCG production is blocked by negative feedback during menstruation.
C. HCG is produced by an embryo.
D. HCG is released during the acrosome reaction.
-
21M.1A.HL.TZ2.40:
What function is maintained as a result of the release of HCG?
A. Production of milk by the mammary glands
B. Release of oxytocin by the posterior pituitary gland
C. Production of FSH by the anterior pituitary gland
D. Production of progesterone by the ovary
- 22N.1A.HL.TZ0.40: What is the role of HCG in pregnancy? A. It is secreted by the embryo to stimulate progesterone...
- 23M.1A.HL.TZ1.37: What is used in a pregnancy test kit? A. Monoclonal antibodies against hybridoma cells B. ...
D3.1.18. Role of the placenta in foetal development inside the uterus
-
23M.2.HL.TZ2.4b:
Pangolins are unique among mammals in having evolved scales, which are a recognition feature of reptiles. Explain which features you expect pangolins to have, which would show that they are mammals, not reptiles.
- 23M.1A.HL.TZ2.40: Which statement applies to the placenta? A. Carbon dioxide diffuses from fetus to mother across...
-
23M.2.HL.TZ2.4b:
Pangolins are unique among mammals in having evolved scales, which are a recognition feature of reptiles. Explain which features you expect pangolins to have, which would show that they are mammals, not reptiles.
-
23M.2.HL.TZ2.b:
Pangolins are unique among mammals in having evolved scales, which are a recognition feature of reptiles. Explain which features you expect pangolins to have, which would show that they are mammals, not reptiles.
- 23M.1A.HL.TZ2.40: Which statement applies to the placenta? A. Carbon dioxide diffuses from fetus to mother across...
D3.1.19. Hormonal control of pregnancy and childbirth
-
23M.2.HL.TZ1.6c:
Describe the hormone feedback mechanisms that help to prepare a woman’s body for pregnancy, sustain the pregnancy and then give birth.
-
23M.2.HL.TZ1.6c:
Describe the hormone feedback mechanisms that help to prepare a woman’s body for pregnancy, sustain the pregnancy and then give birth.
-
23M.2.HL.TZ1.c:
Describe the hormone feedback mechanisms that help to prepare a woman’s body for pregnancy, sustain the pregnancy and then give birth.