Question 1

What determines the differentiation of cells in an embryo?

Accepted Answer

The signals they receive.

Answer

Their genetic identity.

Answer

The size of the embryo.

Answer

The environment outside the embryo.

Question 2

What type of proteins do cells produce in response to the signals they receive?

Accepted Answer

Signal receptor proteins.

Answer

Storage proteins.

Answer

Transport proteins.

Answer

Structural proteins.

Question 3

What happens when a cell receives different combinations of head and tail signals?

Accepted Answer

It turns on different genes.

Answer

It stays the same.

Answer

It dies immediately.

Answer

It becomes a stem cell.

Question 4

What is the role of stem cells during early embryonic development?

Accepted Answer

They have not differentiated yet.

Answer

They can only become muscle cells.

Answer

They are only present in adult organisms.

Answer

They are specialized for specific functions.

Question 5

Why do only certain cells produce insulin?

Accepted Answer

They have the specific receptors to detect the glucose signal.

Answer

All cells produce insulin equally.

Answer

Insulin production is random among cells.

Answer

Only muscle cells can produce insulin.

Question 6

What can cause an embryo's segment to incorrectly grow legs at the head?

Accepted Answer

A mistake in the differentiation process.

Answer

A genetic mutation in all segments.

Answer

The absence of head signals.

Answer

An external injury to the embryo.

Question 7

What are embryonic stem cells capable of under the right conditions?

Accepted Answer

Differentiating into any cell type.

Answer

Only becoming nerve cells.

Answer

Only becoming muscle cells.

Answer

Staying as stem cells forever.

Question 8

What happens to cells in an embryo when they receive different combinations of signals?

Accepted Answer

They differentiate into specialized cells.

Answer

They stop growing.

Answer

They become identical cells.

Answer

They die off.

Question 9

In the context of embryological development, what does the term 'differentiation' refer to?

Accepted Answer

The process by which cells become specialized in structure and function.

Answer

The loss of genetic material.

Answer

The process of cell division.

Answer

The integration of tissues.

Question 10

What is the primary function of receptor proteins in cells?

Accepted Answer

To receive and respond to signals.

Answer

To provide energy to the cell.

Answer

To protect the cell from damage.

Answer

To store genetic information.

Question 11

What does the phrase 'genetically identical' refer to in the context of cells?

Accepted Answer

All cells in an organism share the same genetic material.

Answer

All cells are found in the same location.

Answer

All cells function the same way.

Answer

All cells have the same shapes.

Question 12

What role do signals play in cellular differentiation?

Accepted Answer

They determine which genes are turned on or off in cells.

Answer

They provide nutrients to cells.

Answer

They help cells to grow larger.

Answer

They prevent errors in DNA replication.

Question 13

The embryo steadily activates more and more different genes, increasingly differentiating into a wide range of cells

Accepted Answer

Answer

<P>False</P>

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