CONCEPTS+CONNECTIONS CUST NWACC >CBI<
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ISBN: 9781269865432
Author: Campbell
Publisher: Pearson Custom Publishing
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Textbook Question
Chapter 27, Problem 11TYK
In an experiment, a researcher colored a bit of tissue on the outside of a frog gastrula with an orange fluorescent dye. The embryo developed normally. When the tadpole was placed under an ultraviolet light, which of the following glowed bright orange? (Explain your answer.)
a. the heart
b. the pancreas
c. the brain
d. the stomach
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Students have asked these similar questions
The process forming the neural tube and plate via the intercalation of cells along the medial-lateral axis and extension along the anterior-posterior axis occurs is called?
a. neurulation
b. embryogenesis
c. convergent extension
d. morphogenesis
Endoderm, Mesoderm, and Ectoderm are formed during ________.
a. Gametogenesis
b. Cleavage
c. Gastrulation
d. Organogenesis
From which of the following is the embryo developed?
a) Trophoblasts
b) Blastocoelen
c) The yellow sacks
d) Inner cell mass
Chapter 27 Solutions
CONCEPTS+CONNECTIONS CUST NWACC >CBI<
Ch. 27 - This graph plots the rise and fall of pituitary...Ch. 27 - Turns into the corpus luteum a. vas deferens b....Ch. 27 - a. vas deferens b. prostate gland c. endometrium...Ch. 27 - Prob. 4TYKCh. 27 - Prob. 5TYKCh. 27 - Site of human gestation a. vas deferens b....Ch. 27 - Prob. 7TYKCh. 27 - Secretes seminal fluid a. vas deferens b. prostate...Ch. 27 - Prob. 9TYKCh. 27 - After a sperm penetrates an egg, it is important...
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- The beginning of brain and spinal cord formation is termeda. cephalocaudal folding.b. organogenesis.c. neurulation.d. gastrulation.arrow_forwardThe folding of ectoderm on the top of the embryo during organogenesis produces...? Group of answer choices a. somites b. the archenteron c. the neural tube d. the gastrula e. the blastulaarrow_forwardWhich of the following is false? a. The endoderm, mesoderm, ectoderm are germ layers. b. The trophoblast is a germ layer. c. The inner cell mass is a source of embryonic stem cells. d. The blastula is often a hollow ball of cells.arrow_forward
- ___________ removes webs between developing digits. a. Gastrulation c. Apoptosis b. Lactation d. Implantationarrow_forwardWhich primary germ layer gave rise to the cells that eventually became the central nervous system? a. endoderm b. ectoderm c. acrosome d. mesodermarrow_forwardThe inner cell mass of a human blastocysta. gives rise to the chorion.b. gives rise to the placenta.c. gives rise to the embryo.d. consists of highly differentiated cells.arrow_forward
- Which of the following extra-embyonic membranes become the embryonic portion of the structure involved in waste and nutrient exchange between the embryo and the mother? Select one: A. Amnion B. york sac C. Chorion D. Allantoisarrow_forwardWhich of the following is a function of the reproductive system? (A) to produce all of the body's hormones (B) to regulate body temperature (C) to make hormones that fight disease (D) to regulate the development of male and female characteristicsarrow_forwardHow do you expect Kartagener syndrome leads to infertility? A. The lack of a plasma membrane means that pathogens and foreign substances can permeate the sperm and damage the DNA B. The lack of microtubules mean the sperm do not have tails and cannot swim to fertilize the egg C. The lack of dynein means that the sperm cannot bend their tails to swim and fertilize the eggarrow_forward
- In human beings, after fertilisation, the structure which gets embedded in the wall of uterus is: (a) ovum (b) embryo (c) foetus (d) zygotearrow_forwardIf you observed fruit flies with the following developmental abnormalities, would you guess that a mutation has occurred in a segmentation gene or a homeotic gene? Explain your guess. A. Three abdominal segments were missing. B. One abdominal segment had legs. C. A fly with the correct number of segments had two additional thoracic segments and two fewer abdominal segments.arrow_forwardWhich mechanism prevents an ovum from being fertilized by multiple sperm cells? A. Once a sperm penetrates the jelly-like coating of the egg, no other sperm cell can penetrate the coating. B. When a sperm fuses with the plasma membrane of the egg, depolarization of the membrane occurs. C. The egg can survive in the Fallopian tube for 24 hours s it does not have mitochondria to produce energy. D. When more than a single sperm cell fuses with the plasma membrane, multiple zygotes can form, leading to the twin or triplets.arrow_forward
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