Question 1

Fertilization of an egg without activation is most like ________.

Accepted Answer

A)  placing the key in the ignition of a car but not starting the engine 
B)  resting during halftime of a basketball game 
C)  preparing a pie from scratch and baking it in the oven 
D)  walking to the cafeteria and eating lunch 
A)  placing the key in the ignition of a car but not starting the engine 
B)  resting during halftime of a basketball game 
C)  preparing a pie from scratch and baking it in the oven 
D)  walking to the cafeteria and eating lunch

Question 2

A reproductive difference between sea urchins and humans is ________.

Accepted Answer

A)  the sea urchin egg completes meiosis prior to fertilization, but meiosis in humans is completed after fertilization 
B)  sea urchin eggs and sperm are of equal size, but human eggs are much bigger than human sperm 
C)  sea urchins, but not humans, have a need to block polyspermy, because only in sea urchins can there be more than one source of sperm to fertilize the eggs 
D)  sea urchin zygotes get their mitochondria from the sperm, but human zygotes get their mitochondria from the egg 
A)  the sea urchin egg completes meiosis prior to fertilization, but meiosis in humans is completed after fertilization 
B)  sea urchin eggs and sperm are of equal size, but human eggs are much bigger than human sperm 
C)  sea urchins, but not humans, have a need to block polyspermy, because only in sea urchins can there be more than one source of sperm to fertilize the eggs 
D)  sea urchin zygotes get their mitochondria from the sperm, but human zygotes get their mitochondria from the egg

Question 3

If an egg cell were treated with EDTA, a chemical that binds calcium and magnesium ions,

Accepted Answer

A)  the acrosomal reaction would be blocked. 
B)  the fusion of sperm and egg nuclei would be blocked. 
C)  the fast block to polyspermy would not occur. 
D)  the fertilization envelope would not form. 
A)  the acrosomal reaction would be blocked. 
B)  the fusion of sperm and egg nuclei would be blocked. 
C)  the fast block to polyspermy would not occur. 
D)  the fertilization envelope would not form.

Question 4

Which of the following is common to the development of both birds and mammals?

Accepted Answer

A)  holoblastic cleavage 
B)  epiblast and hypoblast 
C)  trophoblast 
D)  gray crescent 
A)  holoblastic cleavage 
B)  epiblast and hypoblast 
C)  trophoblast 
D)  gray crescent

Question 5

If an amphibian zygote is manipulated so that the first cleavage plane fails to divide the gray crescent, then ________.

Accepted Answer

A)  the daughter cell with the entire gray crescent will die 
B)  both daughter cells will develop normally, because amphibians are totipotent at this stage 
C)  only the daughter cell with the gray crescent will develop normally 
D)  both daughter cells will develop abnormally 
A)  the daughter cell with the entire gray crescent will die 
B)  both daughter cells will develop normally, because amphibians are totipotent at this stage 
C)  only the daughter cell with the gray crescent will develop normally 
D)  both daughter cells will develop abnormally

Question 6

In an egg cell treated with a chemical that binds calcium and magnesium ions, the ________.

Accepted Answer

A)  acrosomal reaction would be blocked 
B)  fusion of sperm and egg nuclei would be blocked 
C)  fast block to polyspermy would not occur 
D)  fertilization envelope would not be formed 
A)  acrosomal reaction would be blocked 
B)  fusion of sperm and egg nuclei would be blocked 
C)  fast block to polyspermy would not occur 
D)  fertilization envelope would not be formed

Question 7

The vegetal pole of a frog zygote differs from the animal pole in that ________.

Accepted Answer

A)  the vegetal pole has a higher concentration of yolk 
B)  the blastomeres originate only in the vegetal pole 
C)  the vegetal pole cells undergo mitosis, but not cytokinesis 
D)  the polar bodies bud from this region 
A)  the vegetal pole has a higher concentration of yolk 
B)  the blastomeres originate only in the vegetal pole 
C)  the vegetal pole cells undergo mitosis, but not cytokinesis 
D)  the polar bodies bud from this region

Question 8

Which of the following correctly matches the extraembryonic membrane with its function?

Accepted Answer

A)  amnion-waste disposal 
B)  chorion-nutrient storage 
C)  allantois-waste storage 
D)  yolk sac-gas exchange 
A)  amnion-waste disposal 
B)  chorion-nutrient storage 
C)  allantois-waste storage 
D)  yolk sac-gas exchange

Question 9

The least amount of yolk would be found in the egg of a ________.

Accepted Answer

A)  bird 
B)  frog 
C)  eutherian mammal 
D)  reptile 
A)  bird 
B)  frog 
C)  eutherian mammal 
D)  reptile

Question 10

If the apical ectodermal ridge is surgically removed from an embryo, it will lose ________.

Accepted Answer

A)  positional information for limb-bud pattern formation 
B)  guidance signals needed for correct gastrulation 
C)  unequal cytokinesis of blastomeres 
D)  the developmental substrate for the kidneys 
A)  positional information for limb-bud pattern formation 
B)  guidance signals needed for correct gastrulation 
C)  unequal cytokinesis of blastomeres 
D)  the developmental substrate for the kidneys

Exam 47: Animal Development

Fertilization of an egg without activation is most like ________.

A reproductive difference between sea urchins and humans is ________.

If an egg cell were treated with EDTA, a chemical that binds calcium and magnesium ions,

Which of the following is common to the development of both birds and mammals?

If an amphibian zygote is manipulated so that the first cleavage plane fails to divide the gray crescent, then ________.

In an egg cell treated with a chemical that binds calcium and magnesium ions, the ________.

The vegetal pole of a frog zygote differs from the animal pole in that ________.

Which of the following correctly matches the extraembryonic membrane with its function?

The least amount of yolk would be found in the egg of a ________.

If the apical ectodermal ridge is surgically removed from an embryo, it will lose ________.

Evolution, the Themes of Biology, and Scientific Inquiry

The Chemical Context of Life

Water and Life

Carbon and the Molecular Diversity of Life

The Structure and Function of Large Biological Molecules

A Tour of the Cell

Membrane Structure and Function

An Introduction to Metabolism

Cellular Respiration and Fermentation

Photosynthesis

Cell Communication

The Cell Cycle

Meiosis and Sexual Life Cycles

Mendel and the Gene Idea

The Chromosomal Basis of Inheritance

The Molecular Basis of Inheritance

Gene Expression: From Gene to Protein

Regulation of Gene Expression

Viruses

DNA Tools and Biotechnology

Genomes and Their Evolution

Descent with Modification: A Darwinian View of Life

The Evolution of Populations

The Origin of Species

The History of Life on Earth

Phylogeny and the Tree of Life

Bacteria and Archaea

Protists

Plant Diversity I: How Plants Colonized Land

Plant Diversity II: The Evolution of Seed Plants

Fungi

An Overview of Animal Diversity

An Introduction to Invertebrates

The Origin and Evolution of Vertebrates

Vascular Plant Structure, Growth, and Development

Resource Acquisition and Transport in Vascular Plants

Soil and Plant Nutrition

Angiosperm Reproduction and Biotechnology

Plant Responses to Internal and External Signals

Basic Principles of Animal Form and Function

Animal Nutrition

Circulation and Gas Exchange

The Immune System

Osmoregulation and Excretion

Hormones and the Endocrine System

Animal Reproduction

Neurons, Synapses, and Signaling

Nervous Systems

Sensory and Motor Mechanisms

Animal Behavior

An Introduction to Ecology and the Biosphere

Population Ecology

Community Ecology

Ecosystems and Restoration Ecology

Conservation Biology and Global Change

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