Question 1

Choose the letter of the best match from the following:
-Neurulation occurs.

Accepted Answer

A) third trimester of pregnancy 
B) second month of pregnancy 
C) first month of pregnancy 
D) second trimester of pregnancy 
E) third month of pregnancy 
A) third trimester of pregnancy 
B) second month of pregnancy 
C) first month of pregnancy 
D) second trimester of pregnancy 
E) third month of pregnancy

Question 2

The human placenta is formed by the interaction of uterine tissue and the

Accepted Answer

A) amnion. 
B) embrion. 
C) chorion. 
D) yolk sac. 
E) allantois. 
A) amnion. 
B) embrion. 
C) chorion. 
D) yolk sac. 
E) allantois.

Question 3

The head of a sperm is capped with an organelle that contains glycoprotein-digesting enzymes.This organelle is the

Accepted Answer

A) zona pellucidA. 
B) acrosome. 
C) granulosa. 
D) blastula. 
E) neural cap. 
A) zona pellucidA. 
B) acrosome. 
C) granulosa. 
D) blastula. 
E) neural cap.

Question 4

In the diagram,which of the following is true?

Accepted Answer

A) Both diagrams show developmental sequences occurring in the same animal. 
B) Both diagrams show blastulas. 
C) Diagram II shows gastrulation in a bird. 
D) Diagram I shows gastrulation in a frog. 
E) Diagram II shows gastrulation in a mammal and diagram ii shows gastrulation in a reptilE. 
A) Both diagrams show developmental sequences occurring in the same animal. 
B) Both diagrams show blastulas. 
C) Diagram II shows gastrulation in a bird. 
D) Diagram I shows gastrulation in a frog. 
E) Diagram II shows gastrulation in a mammal and diagram ii shows gastrulation in a reptilE.

Question 5

Which of the following is not a mechanism to prevent polyspermy?

Accepted Answer

A) change in membrane potential of egg 
B) altering composition of exterior egg coat 
C) cortical granule enzymes remove sperm receptors from egg 
D) vitelline envelopes lift off surface of egg 
E) sperm nuclei degraded inside egg allowing only one to fuse 
A) change in membrane potential of egg 
B) altering composition of exterior egg coat 
C) cortical granule enzymes remove sperm receptors from egg 
D) vitelline envelopes lift off surface of egg 
E) sperm nuclei degraded inside egg allowing only one to fuse

Question 6

In this diagram,which of the following numbers represents the actual event of egg activation?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) V 
A) I 
B) II 
C) III 
D) IV 
E) V

Question 7

The neural crest produces all of the following except

Accepted Answer

A) a gill chamber of primitive chordates. 
B) sensory neurons of the dorsal root ganglia. 
C) Schwann cells. 
D) blastopores. 
E) olfactory and hearing organs. 
A) a gill chamber of primitive chordates. 
B) sensory neurons of the dorsal root ganglia. 
C) Schwann cells. 
D) blastopores. 
E) olfactory and hearing organs.

Question 8

There are enzymes located in the acrosome that enables a sperm to tunnel its way through the

Accepted Answer

A) blastula to the egg's plasma membrane. 
B) zona pellucida to the egg's plasma membrane. 
C) archenteron to the egg's plasma membrane. 
D) allantois to the egg's plasma membrane. 
E) chorion to the egg's plasma membranE. 
A) blastula to the egg's plasma membrane. 
B) zona pellucida to the egg's plasma membrane. 
C) archenteron to the egg's plasma membrane. 
D) allantois to the egg's plasma membrane. 
E) chorion to the egg's plasma membranE.

Question 9

Which of the following animals undergoes true holoblastic cleavage?

Accepted Answer

A) butterfly 
B) ant 
C) snail 
D) tuna 
E) bird 
A) butterfly 
B) ant 
C) snail 
D) tuna 
E) bird

Question 10

All of the following statements are correct about the human placenta except

Accepted Answer

A) oxygen can diffuse from the mother's blood into the fetal blood. 
B) maternal blood and fetal blood are mixed in the placenta. 
C) alcohol is not prevented from entering the fetal blood supply. 
D) antibiotics that the mother is taking are not stopped by the placenta and can enter the fetal blooD. 
E) the human placenta releases hCG. 
A) oxygen can diffuse from the mother's blood into the fetal blood. 
B) maternal blood and fetal blood are mixed in the placenta. 
C) alcohol is not prevented from entering the fetal blood supply. 
D) antibiotics that the mother is taking are not stopped by the placenta and can enter the fetal blooD. 
E) the human placenta releases hCG.

Question 11

By the end of the _____ week of pregnancy,in the neurulation stage,the first somites appear from which the muscles,vertebrae,and connective tissues develop.

Accepted Answer

A) first 
B) third 
C) eighth 
D) tenth 
A) first 
B) third 
C) eighth 
D) tenth

Question 12

Which of the following is not an effect resulting from sperm penetration?

Accepted Answer

A) haploid nucleus of egg undergoes final mitotic division 
B) eggs complete meiosis 
C) outer pigmented cap of egg cytoplasm rotates toward point of entry 
D) sharp increase in protein synthesis 
E) movement of egg cytoplasm 
A) haploid nucleus of egg undergoes final mitotic division 
B) eggs complete meiosis 
C) outer pigmented cap of egg cytoplasm rotates toward point of entry 
D) sharp increase in protein synthesis 
E) movement of egg cytoplasm

Question 13

The developing embryo of reptiles,birds,and mammals is encased in the fluid-filled ________ membrane.

Accepted Answer

A) amniotic. 
B) embryonic. 
C) chorioniC. 
D) yolk sac. 
E) allantois. 
A) amniotic. 
B) embryonic. 
C) chorioniC. 
D) yolk sac. 
E) allantois.

Question 14

Milk production in mammary alveoli is stimulated by

Accepted Answer

A) oxytocin. 
B) prolactin. 
C) chorionic gonadotropin. 
D) progesterone. 
E) estrogen. 
A) oxytocin. 
B) prolactin. 
C) chorionic gonadotropin. 
D) progesterone. 
E) estrogen.

Question 15

The mesoderm gives rise to all except

Accepted Answer

A) the head. 
B) somites. 
C) cartilage. 
D) dermis. 
E) the kidney. 
A) the head. 
B) somites. 
C) cartilage. 
D) dermis. 
E) the kidney.

Question 16

The appearance of which of the following structures has been widely accepted as the key event in the evolution of vertebrates?

Accepted Answer

A) neural crest 
B) neural groove 
C) neural tube 
D) spinal cord 
E) placenta 
A) neural crest 
B) neural groove 
C) neural tube 
D) spinal cord 
E) placenta

Question 17

Which of the following stages of development are incorrectly matched with the times elapsed from fertilization?

Accepted Answer

A) implantation-six days 
B) gastrulation-two weeks 
C) neurulation-three weeks 
D) fetus formation-six weeks 
E) morphogenesis-second month 
A) implantation-six days 
B) gastrulation-two weeks 
C) neurulation-three weeks 
D) fetus formation-six weeks 
E) morphogenesis-second month

Question 18

The human placenta is formed from a combination of the

Accepted Answer

A) chorionic frondosum and the chorionic villus. 
B) chorionic frondosum and the decidua basalis. 
C) decidua basalis and the chorionic villus. 
D) chorionic villus and the endometrium. 
E) chorionic frondosum and the amnion. 
A) chorionic frondosum and the chorionic villus. 
B) chorionic frondosum and the decidua basalis. 
C) decidua basalis and the chorionic villus. 
D) chorionic villus and the endometrium. 
E) chorionic frondosum and the amnion.

Question 19

Choose the letter of the best match from the following:
-Major nerve tracts are formed.

Accepted Answer

A) third trimester of pregnancy 
B) second month of pregnancy 
C) first month of pregnancy 
D) second trimester of pregnancy 
E) third month of pregnancy 
A) third trimester of pregnancy 
B) second month of pregnancy 
C) first month of pregnancy 
D) second trimester of pregnancy 
E) third month of pregnancy

Question 20

Referring to the figure below,choose the letter of the best match from with the following steps of sperm penetration and fusion.  
-Step IV

Accepted Answer

A) Some of the zona pellucida is degraded by acrosomal enzymes. 
B) Enzymes are released by cortical granules that harden the zona pellucida. 
C) Sperm and egg fuse at the plasma membrane. 
D) Sperm penetrates the cronoa radiata. 
E) The sperm nucleus dissociates and enters the cytoplasm.
F)Additional sperm can no longer penetrate. 
A) Some of the zona pellucida is degraded by acrosomal enzymes. 
B) Enzymes are released by cortical granules that harden the zona pellucida. 
C) Sperm and egg fuse at the plasma membrane. 
D) Sperm penetrates the cronoa radiata. 
E) The sperm nucleus dissociates and enters the cytoplasm.
F)Additional sperm can no longer penetrate.

Exam 54: Animal Development

Choose the letter of the best match from the following: -Neurulation occurs.

The human placenta is formed by the interaction of uterine tissue and the

The head of a sperm is capped with an organelle that contains glycoprotein-digesting enzymes.This organelle is the

In the diagram,which of the following is true?

Which of the following is not a mechanism to prevent polyspermy?

In this diagram,which of the following numbers represents the actual event of egg activation?

The neural crest produces all of the following except

There are enzymes located in the acrosome that enables a sperm to tunnel its way through the

Which of the following animals undergoes true holoblastic cleavage?

All of the following statements are correct about the human placenta except

By the end of the _____ week of pregnancy,in the neurulation stage,the first somites appear from which the muscles,vertebrae,and connective tissues develop.

Which of the following is not an effect resulting from sperm penetration?

The developing embryo of reptiles,birds,and mammals is encased in the fluid-filled ________ membrane.

Milk production in mammary alveoli is stimulated by

The mesoderm gives rise to all except

The appearance of which of the following structures has been widely accepted as the key event in the evolution of vertebrates?

Which of the following stages of development are incorrectly matched with the times elapsed from fertilization?

The human placenta is formed from a combination of the

Choose the letter of the best match from the following: -Major nerve tracts are formed.

Referring to the figure below,choose the letter of the best match from with the following steps of sperm penetration and fusion. -Step IV

The Science of Biology

The Nature of Molecules

The Chemical Building Blocks of Life

Cell Structure

Membranes

Energy and Metabolism

How Cells Harvest Energy

Photosynthesis

Cell Communication

How Cells Divide

Sexual Reproduction and Meiosis

Patterns of Inheritance

Chromosomes Mapping and the Meiosis - Inheritance Connection

Dna: the Genetic Material

Genes and How They Work

Control of Gene Expression

Biotechnology

Genomics

Cellular Mechanisms of Development

Genes Within Populations

The Evidence for Evolution

The Origin of Species

Systematics and the Phylogenetic Revolution

Genome Evolution

Evolution of Development

The Tree of Life

Viruses

Prokaryotes

Protists

Overview of Green Plants

Fungi

Overview of Animal Diversity

Noncoelomate Invertebrates

Coelomate Invertebrates

Vertebrates

Plant Form

Vegetative Plant Development

Transport in Plants

Plant Nutrition and Soils

Plant Defense Responses

Sensory Systems in Plants

Plant Reproduction

The Animal Body and Principles of Regulation

The Nervous System

Sensory Systems

The Endocrine System

The Musculoskeletal System

The Digestive System

The Respiratory System

The Circulatory System

Osmotic Regulation and the Urinary System

The Immune System

The Reproductive System

Behavioral Biology

Population Ecology

Community of Ecology

Dynamics of Ecosystems

The Biosphere

Conservation Biology