Question 1

Lactase

Accepted Answer

A) digests milk sugar. 
B) is present from the time of birth. 
C) activity declines during infancy. 
D) activity may be lost in adults. 
E) has all of these properties. 
A) digests milk sugar. 
B) is present from the time of birth. 
C) activity declines during infancy. 
D) activity may be lost in adults. 
E) has all of these properties.

Question 2

A cleft lip results from the failure of ____________________ to fuse.

Accepted Answer

A) upper jaw,nose and lip 
B) lower jaw and lower lip 
C) upper jaw and lower jaw 
D) mandibular processes 
E) both upper jaw and lower jaw and mandibular processes. 
A) upper jaw,nose and lip 
B) lower jaw and lower lip 
C) upper jaw and lower jaw 
D) mandibular processes 
E) both upper jaw and lower jaw and mandibular processes.

Question 3

From 1 month to 1 or 2 years the developing individual is known as the

Accepted Answer

A) blastocyst or pre-embryo. 
B) neonate. 
C) embryo. 
D) infant. 
E) fetus. 
A) blastocyst or pre-embryo. 
B) neonate. 
C) embryo. 
D) infant. 
E) fetus.

Question 4

All of these are factors that facilitate the fertilization process EXCEPT:

Accepted Answer

A) the swimming ability of the sperm cell 
B) the presence of the oocyte in the uterus 
C) oxytocin secreted by female pituitary 
D) prostaglandins in male semen 
E) capacitation of the sperm 
A) the swimming ability of the sperm cell 
B) the presence of the oocyte in the uterus 
C) oxytocin secreted by female pituitary 
D) prostaglandins in male semen 
E) capacitation of the sperm

Question 5

If a female that is a carrier for hemophilia mates with a male that is normal,the possible outcome for having a male with hemophilia is

Accepted Answer

A) 100%. 
B) 75%. 
C) 50%. 
D) 25%. 
E) 0%. 
A) 100%. 
B) 75%. 
C) 50%. 
D) 25%. 
E) 0%.

Question 6

The stage that involves the expulsion of the placenta is

Accepted Answer

A) gestation. 
B) first stage or dilation phase of labor. 
C) second stage or expulsion phase of labor. 
D) third stage or placental phase of labor. 
A) gestation. 
B) first stage or dilation phase of labor. 
C) second stage or expulsion phase of labor. 
D) third stage or placental phase of labor.

Question 7

Before birth the ductus venosus carries __________ blood.

Accepted Answer

A) mostly oxygenated 
B) mostly deoxygenated 
C) an equal mix of deoxygenated and oxygenated 
A) mostly oxygenated 
B) mostly deoxygenated 
C) an equal mix of deoxygenated and oxygenated

Question 8

The umbilical cord

Accepted Answer

A) is a connecting stalk between the embryo and the placenta. 
B) has two umbilical arteries,which carry blood from the embryo to the mother. 
C) has two umbilical veins,which carry blood from the placenta back to the embryo's liver. 
D) Is both a connecting stalk between the embryo and the placenta and has two umbilical arteries,which carry blood from the embryo to the mother form correct statements. 
E) Is both a connecting stalk between the embryo and the placenta and has two umbilical veins,which carry blood from the placenta back to the embryo's liver form correct statements. 
A) is a connecting stalk between the embryo and the placenta. 
B) has two umbilical arteries,which carry blood from the embryo to the mother. 
C) has two umbilical veins,which carry blood from the placenta back to the embryo's liver. 
D) Is both a connecting stalk between the embryo and the placenta and has two umbilical arteries,which carry blood from the embryo to the mother form correct statements. 
E) Is both a connecting stalk between the embryo and the placenta and has two umbilical veins,which carry blood from the placenta back to the embryo's liver form correct statements.

Question 9

If a mother that is a carrier for albinism and a normal non-carrier father mate,the possible outcome for having a child that is an albino is

Accepted Answer

A) 100%. 
B) 75%. 
C) 50%. 
D) 25%. 
E) 0%. 
A) 100%. 
B) 75%. 
C) 50%. 
D) 25%. 
E) 0%.

Lactase

A cleft lip results from the failure of ____________________ to fuse.

From 1 month to 1 or 2 years the developing individual is known as the

All of these are factors that facilitate the fertilization process EXCEPT:

If a female that is a carrier for hemophilia mates with a male that is normal,the possible outcome for having a male with hemophilia is

The stage that involves the expulsion of the placenta is

Before birth the ductus venosus carries __________ blood.

The umbilical cord

If a mother that is a carrier for albinism and a normal non-carrier father mate,the possible outcome for having a child that is an albino is

The Human Organism

The Chemical Basis of Life

Cell Structures and Their Functions

Tissues

Integumentary System

Skeletal System: Bones and Joints

Muscular System

Nervous System

Senses

Endocrine System

Blood

Heart

Blood Vessels and Circulation

The Lymphatic System and Immunity

Respiratory System

Digestive System

Nutrition, metabolism, and Body Temperature Regulation

Urinary System and Fluid Balance

Reproductive System

Filters

Exam 20: Development, heredity, and Aging

Lactase

A cleft lip results from the failure of ____________________ to fuse.

From 1 month to 1 or 2 years the developing individual is known as the

All of these are factors that facilitate the fertilization process EXCEPT:

If a female that is a carrier for hemophilia mates with a male that is normal,the possible outcome for having a male with hemophilia is

The stage that involves the expulsion of the placenta is

Before birth the ductus venosus carries __________ blood.

The umbilical cord

If a mother that is a carrier for albinism and a normal non-carrier father mate,the possible outcome for having a child that is an albino is

The Human Organism

The Chemical Basis of Life

Cell Structures and Their Functions

Tissues

Integumentary System

Skeletal System: Bones and Joints

Muscular System

Nervous System

Senses

Endocrine System

Blood

Heart

Blood Vessels and Circulation

The Lymphatic System and Immunity

Respiratory System

Digestive System

Nutrition, metabolism, and Body Temperature Regulation

Urinary System and Fluid Balance

Reproductive System

Filters