How Can a Blastocyst,which Is Basically a Mass of Cells,develop

question 17

Multiple Choice

How can a blastocyst,which is basically a mass of cells,develop into different tissues,organs,systems,and ultimately a fetus?

• A) Chemicals enter the cells,causing them to become different tissues.
• B) Chemical signals cause the production of genes.
• C) Chemical signals cause the regulation of genes and production of particular proteins.
• D) Chemical signals cause the regulation of proteins that will produce the appropriate genes.
• E) Chemical signals cause all cells to develop into one type of organ that splits off into all the organs of the body.

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Definitions:

Free Blacks

African Americans who were not enslaved before the abolition of slavery, living either by manumission, birth to free parents, or in regions where slavery was not enforced.

State Constitution

The fundamental legal document outlining the structure, functions, and principles of government within a specific state, subordinate to the federal constitution.

Missouri Compromise

An agreement passed in 1820 that allowed Missouri to enter the Union as a slave state and Maine as a free state, while banning slavery in the remainder of the Louisiana Territory north of the 36° 30′ latitude.

Free State

Denotes a state in which slavery was not legally permitted, especially in the context of pre-Civil War United States.