Deck 12: Growth, Post-Embryonic Development and Regeneration

Question 1

Which of the following refers to the ability to replace missing body parts by the regrowth and repatterning of somatic tissue?

A) Metamorphosis
B) Regeneration
C) Growth
D) Homeostasis

Answer 1

B

Question 2

Growth is the increase in mass or overall size of a tissue or organism. Which of the following is not a contributor to growth?

A) Proliferation
B) Enlargement
C) Accretionary growth
D) Apoptosis

Answer 2

D

Question 3

Which of the following is the transcriptional co-activator component to the Drosophila Hippo pathway?

A) Hippo
B) Warts
C) Merlin
D) Yorkie

Answer 3

D

Question 4

Adenomatous polyposis coli (APC), a Wnt pathway member, is a tumor suppressor protein. Which of the options given is true of the APC protein?

A) Its normal function promotes mitotic cell division
B) Its normal function suppresses apoptosis
C) Mutations in the APC gene are inherited in a dominant fashion
D) Loss of APC function promotes mitosis

Question 5

Which of the following represents the correct flow of post-natal growth control?

A) Pituitary - IGF-1 - liver - growth hormone
B) Liver - IGF-1 - Pituitary - growth hormone
C) Liver - growth hormone - Pituitary - IGF-1
D) Pituitary - growth hormone - liver - IGF-1

Question 6

Which of the following hormones induces molting in arthropods?

A) Growth hormone
B) Testosterone
C) Juvenile hormone
D) Ecdysone

Question 7

Which of the following hormones causes metamorphosis in amphibians?

A) Juvenile hormone
B) Prolactin
C) Ecdysone
D) Thyroid hormone

Question 8

What is the name given to the proliferative mass of undifferentiated cells at the site of amputation that gives rise to a regenerated limb in amphibians?

A) Neoblast
B) Stem cell
C) Blastula
D) Blastema

Question 9

Amphibian limb regeneration depends on the presence of nerves. Which of the following conditions would not support limb regeneration?

A) Amputated limb with no other manipulation
B) Limb that has had its nerves removed early before limb development
C) Denervated limb with treatment of anterior gradient protein
D) Limb that has had its nerves removed late after limb development

Question 10

Which of the following is the earliest cellular change in the injured zebrafish heart?

A) Electrical coupling
B) Vascularization of cardiac muscle
C) Epicardial activation
D) Endocardial activation

Question 11

Which of the following refers to the age-related decline in function?

A) Dauer
B) Silence
C) Lifespan
D) Senescence