Question 1

In the disease diabetes mellitus, a lack of insulin prevents

Accepted Answer

A)  the excretion of glucose. 
B)  glucose breakdown. 
C)  glucose uptake by cells. 
D)  the conversion of glucose to glycogen. 
E)  the synthesizing of glucose. 
A)  the excretion of glucose. 
B)  glucose breakdown. 
C)  glucose uptake by cells. 
D)  the conversion of glucose to glycogen. 
E)  the synthesizing of glucose.

Question 2

For a cell to be responsive to a lipid-soluble hormone, it must have

Accepted Answer

A)  a specific cell-surface receptor. 
B)  a specific receptor in the cytoplasm or nucleus. 
C)  cAMP. 
D)  G protein. 
E)  a specific DNA sequence to which the hormone binds. 
A)  a specific cell-surface receptor. 
B)  a specific receptor in the cytoplasm or nucleus. 
C)  cAMP. 
D)  G protein. 
E)  a specific DNA sequence to which the hormone binds.

Question 3

In the spring, male songbirds sing a lot and have high testosterone (T) levels, but song output declines significantly in August and September. One hypothesis to explain this observation is that the number of T receptors declines, which would

Accepted Answer

A)  shift the dose response curve to the right. 
B)  mean lower levels of T could accomplish the same level of song output. 
C)  cause reduced affinity of T for the remaining receptors. 
D)  cause T to bind to unrelated receptors. 
E)  have no effect on sensitivity to T. 
A)  shift the dose response curve to the right. 
B)  mean lower levels of T could accomplish the same level of song output. 
C)  cause reduced affinity of T for the remaining receptors. 
D)  cause T to bind to unrelated receptors. 
E)  have no effect on sensitivity to T.

Question 4

Describe the modes of action of lipid-soluble and water-soluble hormones.

Accepted Answer

The plasma membrane of cells is hydropho

Question 5

T3 and T4

Accepted Answer

A)  are made from the amino acid tyrosine. 
B)  require iodine for their production. 
C)  are transported to the blood. 
D)  differ by number of iodine atoms. 
E)  All of the above 
A)  are made from the amino acid tyrosine. 
B)  require iodine for their production. 
C)  are transported to the blood. 
D)  differ by number of iodine atoms. 
E)  All of the above

Question 6

Which of the following is the earliest event in puberty?

Accepted Answer

A)  The hypothalamus releases more GnRH. 
B)  The level of circulating androgens rises in males. 
C)  The menstrual cycle is initiated in females. 
D)  The gonads differentiate into testes or ovaries. 
E)  The hypothalamic GnRH-producing cells become more sensitive to negative feedback from sex steroids and gonadotropins. 
A)  The hypothalamus releases more GnRH. 
B)  The level of circulating androgens rises in males. 
C)  The menstrual cycle is initiated in females. 
D)  The gonads differentiate into testes or ovaries. 
E)  The hypothalamic GnRH-producing cells become more sensitive to negative feedback from sex steroids and gonadotropins.

Question 7

Use the following to answer questions:
Match the description of a gland, target organ, function, or action specified in the questions that follow with the correct hormone from the list below. 
-Lowers blood phosphate levels

Accepted Answer

A)  Somatostatin 
B)  Melatonin 
C)  Aldosterone 
D)  Testosterone 
E)  Parathyroid hormone 
A)  Somatostatin 
B)  Melatonin 
C)  Aldosterone 
D)  Testosterone 
E)  Parathyroid hormone

Exam 41: Animal Hormones

In the disease diabetes mellitus, a lack of insulin prevents

For a cell to be responsive to a lipid-soluble hormone, it must have

In the spring, male songbirds sing a lot and have high testosterone (T) levels, but song output declines significantly in August and September. One hypothesis to explain this observation is that the number of T receptors declines, which would

Describe the modes of action of lipid-soluble and water-soluble hormones.

T3 and T4

Which of the following is the earliest event in puberty?

Use the following to answer questions: Match the description of a gland, target organ, function, or action specified in the questions that follow with the correct hormone from the list below. -Lowers blood phosphate levels

Studying Life

Small Molecules and the Chemistry of Life

Proteins, Carbohydrates, and Lipids

Nucleic Acids and the Origin of Life

Cells: the Working Units of Life

Cell Membranes

Cell Signaling and Communication

Energy, Enzymes, and Metabolism

Pathways That Harvest Chemical Energy

Photosynthesis: Energy From Sunlight

The Cell Cycle and Cell Division

Inheritance, Genes, and Chromosomes

Dna and Its Role in Heredity

From Dna to Protein: Gene Expression

Gene Mutation and Molecular Medicine

Regulation of Gene Expression

Genomes

Recombinent Dna and Biotechnology

Differential Gene Expression in Development

Development and Evolutionary Change

Evidence and Mechanisms of Evolution

Reconstructing and Using Phylogenies

Species and Their Formation

Evolution of Genes and Genomes

The History of Life on Earth

Bacteria and Archaea: the Prokaryotic Domains

The Origin and Diversification of Eukaryotes

Plants Without Seeds: From Water to Land

The Evolution of Seed Plants

Fungi: Recyclers, Pathogens, Parasites, and Plant Partners

Animal Origins and the Evolution of Body Plans

Protostome Animals

Deuterostome Animals

The Plant Body

Transport in Plants

Plant Nutrition

Regulation of Plant Growth

Reproduction in Flowering Plants

Plant Responses to Environmental Challenges

Physiology, Homeostasis, and Temperature Regulation

Immunology: Animal Defense Systems

Animal Reproduction

Animal Development

Neurons and Nervous Systems

Sensory Systems

The Mammalian Nervous System: Structure and Higher Function

Musculoskeletal Systems

Gas Exchange in Animals

Circulatory Systems

Nutrition, Digestion, and Absorption

Salt and Water Balance and Nitrogen

Animal Behavior

Ecology and the Distribution of Life

Population Ecology

Species Interaction and Coevolution

Community Ecology

Ecosystems and Global Ecology

Conservation Biology

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T₃ and T₄