Which row in the chart below contains the correct sequence of events involved in the formation of a human embryo?
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Question 2
2.
The axolotl, also known as the Mexican walking fish, can regenerate parts of its body, such as a leg or a tail.
The regeneration of these parts involves the process of
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Question 3
3.
Which two processes are directly required for a human zygote to be produced?
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Question 4
4.
All the genetic information necessary for the growth and development in a sexually reproducing animal is present in
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Question 5
5.
The human pancreas contains cells that secrete insulin. Only these cells produce insulin because
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Question 6
6.
Hammerhead sharks are unlike most other shark species. Nearly all shark species either lay eggs or give birth to live young after their eggs hatch internally. Hammerhead sharks form a placenta, a structure more commonly found in mammals, such as humans. One role of the placenta in the development of offspring is normally to
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Question 7
7.
The process of meiotic division in human males is represented below
This process produces four sperm cells, each with
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Question 8
8.
In an experiment using a particular frog species, nuclei were removed from the intestinal cells of tadpoles and transplanted into eggs whose nuclei had been removed. A small number of these eggs developed into normal frogs. This suggests that the nuclei of tadpole intestinal cells
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Question 9
9.
Models A and B below illustrate two different methods of reproduction.
Which statement best describes the offspring that result from these methods?
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Question 10
10.
The diagram below represents the human female reproductive system.
Which correctly describes the normal function of two of the labeled structures?
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Question 11
11.
Which statement about the functioning of the human reproductive system is correct?
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Question 12
12.
The graph below represents the interactions of two female reproductive hormones.
Based on the graph, which statement is correct regarding the interaction of the levels of estrogen and progesterone?
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Question 13
13.
Base your answer on the data table below and on your knowledge of biology.
The data table shows an effect of secondhand smoke (SHS) on newborn babies of nonsmoking women.
Based on this and other similar studies involving newborns, medical professionals recommend that pregnant women avoid secondhand smoke because chemicals in the smoke
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Question 14
14.
Base your answer on the information below and on your knowledge of biology.
Biobag System
After decades of research, scientists have developed a biobag system with the potential to save extremely premature babies. They have successfully removed eight lamb fetuses from their mothers and placed them into biobags. Eventually, the fetuses developed into healthy sheep.
The biobag is a clear plastic bag filled with a solution of water containing various salts. A machine outside the bag is attached to the blood vessels in the lamb's umbilical cord. The lamb's umbilical cord brings in nutrients, and its heart pumps blood through an external oxygenator that removes carbon dioxide from the blood and adds oxygen.
The biobag models early development in the reproduction of mammals. In the future, this system may be able to be used with human premature babies. The biobag system could allow them to continue to develop for a longer period of time.
Two parts of the biobag system are the plastic bag and the external oxygenator. Select one of these parts, identify the structure in the reproductive system that the part of the biobag system you selected represents, and state the function of that part.
Plastic bag
External oxygenator
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Question 15
15.
Sheets of skin are grown in a culture in order to replace the skin of victims with severe burns or frostbite. Undamaged skin cells are obtained from the victim, put in a Petri dish with the proper growth materials, and incubated as represented in the diagram below.