DEP Quiz Ch. 2

An alternative to giving birth is to arrange to give birth at home. In the U.S., less than _____ of births occur at home A. 1 percent B. 5 percent C. 10 percent D. 15 percent

A

An individual with an extra chromosome on the 21st pair of chromosomes has _____. A. Down syndrome B. nearsightedness C. fragile X syndrome D. Tourette syndrome

A

At around 38 weeks after conception, the _____ starts the sequence of events that prepares the fetus for delivery and starts labor A. fetal brain B. maternal brain C. placenta D. germinal period

A

Gabby received high-quality prenatal care from the care team at her local hospital. She was informed about what to eat and what to do. They also coached her on what to ____, such as cigarette smoking and very high stress A. avoid B. seek out C. experience D. continue

A

In the _____ week following conception, the head begins to take shape A. fourth B. fifth C. sixth D. seventh

A

One of the 46 molecules of DNA (in 23 pairs) that virtually each cell of the human body contains and that, together contain all the genes is called a(n) ______. A. chromosome B. allele C. Genotype D. zygote

A

With respect to test results, a false positive is the result of a laboratory test that reports something as _____. A. true when in fact it is not true B. false when in fact it is not false C. true when in fact it is true D. false when in fact it is false

A

The critical factor in attaining the age of viability is _____. A. weighing at least 5 pounds (2.3 kg) B. attaining advances in neurological functioning C. having functioning digestive and respiratory systems D. surviving at least 28 weeks past conception

B

The longest period of prenatal development is the _____ period A. embryonic B. fetal C. zygotic D. germinal

B

A high school science teacher asks her students to name the cells that can be used to produce any other cell in the body. If the students respond with ______ cells, they will be correct A. polymorphic B. foundation C. stem D. allele

C

After about the eight-cell stage within the zygote, cells start to _____, meaning that they take different forms and reproduce at various rates depending on where they are located A. divide B. duplicate C. differentiate D. detach

C

The germinal period ends approximately _____ after conception A. 2 days B. 3 months C. 2 weeks D. 12 weeks

C

The instructions for making amino acids are on about 3 billion pairs of chemicals called ______. A. couple pairs B. foundation pairs C. base pairs D. copy pairs

C

A fatal nervous system disorder caused by a copy number variation -- more than 35 repetitions of a particular set of three base pairs -- is ______. A. Down syndrome B. nearsightedness C. fragile X syndrome D. Huntington disease

D

Genes with various repeats or deletions of base pairs are referred to as _______. A. polymorphic B. autosomes C. polygenic D. copy number variations

D

Hannah is 5 years old. She has been diagnosed with ADHD and shows signs of learning disabilities. Her doctor suggests that Hannah's problems could be the result of prenatal exposure to _____, though he stresses that the link is not straightforward at this time. A. chromosomal abnormalities B. genetic abnormalities C. cell differentiation D. behavioral teratogens

D

Low folic acid during pregnancy can result in _____. A. heart defects B. lung defects C. limb deformities D. neural defects

D

The birth process depends on all of the following EXCEPT _____. A. customs of the culture B. position and size of the fetus C. the skill of the birth attendant D. parents' genetic heritage

D