Tissues

Question 1

TRUE or FALSE:
Growth, morphogenesis, and cellular differentiation act in concert to transform the fertilized egg into an animal or plant.

Answer 1

True

Question 2

It refers to the changes in size and mass.

Answer 2

growth

Question 3

It refers to the development of body form, shape, and organization.

Answer 3

morphogenesis

Question 4

It refers to the differences other than size among cells, tissues, and organs.

Answer 4

cellular differentiation

Question 5

It refers to the process involved assuming different anatomical characteristics and functions.

Answer 5

cellular differentiation

Question 6

It refers to the development of specific structures in specific locations.

Answer 6

pattern formation

Question 7

It determines pattern formation in the form of signals.

Answer 7

positional information

Question 8

It refers to the condition of having structural differences at opposite ends of an organism.

Answer 8

polarity

Question 9

Complete the sentence:
The first mitotic division of the zygote is transverse, splitting the fertilized egg into the ________ and ________ cell.

Answer 9

basal, terminal

Question 10

Complete the sentence:
In embryo development, the terminal cell differentiates into the ________.

Answer 10

proembryo

Question 11

It allows cells to become specialized in structure and function.

Answer 11

cellular differentiation

Question 12

Give the 2 controls for morphogenesis and cellular differentiation.

Answer 12

intrinsic and extrinsic

Question 13

Differentiate intracellular and extracellular controls.

Answer 13

• intracellular - genetic; requiring a programmed sequence of gene expression
• extracellular - hormonal; involving chemical messengers that allow cells to communicate with one another

Question 14

Determine which principle is stated below:
Cells of a developing organism can synthesize different proteins and diverge in structure and function, although sharing a common genome.

Answer 14

genomic equivalence

Question 15

TRUE or FALSE:
Differences between cell types are due to differential gene expression.

Answer 15

True

Question 16

It refers to the controlled expression of different genes by cells with the same genome.

Answer 16

differential gene expression

Question 17

It contains the information the cell requires to synthesize proteins and to replicate itself.

Answer 17

DNA

Question 18

It refers to the storage repository for the information that is required for any cell to function.

Answer 18

DNA

Question 19

TRUE or FALSE:
Cell differentiation generally depends on changes in gene expression rather than gene loss.

Answer 19

True

Question 20

How long are genes in terms of nucleotides?

Answer 20

100-1000 nucleotides long

Question 21

It refers to the synthesis of RNA under the direction of DNA.

Answer 21

transcription

Question 22

It refers to the synthesis of polypeptide under the direction of RNA.

Answer 22

translation

Question 23

Give the different controls of gene expression.