IV B

Question 1

_______ is the process As cells go through rounds of division, groups of cells have their gene activity regulated, this leads to cells becoming specialized or ______

Answer 1

Cell determination

Differentiated

Question 2

_______ is when a cell has its fate determined, it cannot of back become other cell types

Answer 2

Cell differentiation

Question 3

_______ is as the number of cells increase, they nee positional information. They communicate with adjacent cells and get instructions which can lead to changes in their shape, where they migrate to, what they do including apoptosis

Answer 3

Pattern formation

Question 4

_______ us literally where the organism begins to develop its shape. Many organisms contain similar cell types in similar numbers but are arrange differently

Answer 4

Morphogenesis

Question 5

_______ is most somatic cells contain a full complement of DNA, but individual cells only use a small amount of that information to function (cell differentiation)

Answer 5

Differential gene expression

Question 6

_______ is out somatic cells that contain a full compliment of DNA, no information is lost

Answer 6

Nuclear equivalence

Question 7

The sperm contacts the egg and recognition occurs, sperm are motile cells. Many eggs have membrane proteins that are specific and will helps perm attach, binding is a protein found in sea richness that bind the sperm egg of the same species. In sea urchins, there are addiction layers around the egg plasma membrane for protection, the cited line envelope and jelly coat

Answer 7

First process of fertilization

Question 8

______ is the product of the fusion of two gametes, and a diploid cell

Answer 8

Zygote

Question 9

______ is a cluster of cells with no clear fluid cavity

Answer 9

Morula

Question 10

______ us where the appearance of a hollow fluid filled cavity is present

Answer 10

Blastula

Question 11

______ is the process of where blast omens divide

Answer 11

Cleavage

Question 12

Patterns of cleavage depend on various factions including, _______ (2)

Answer 12

Species and amount of yolk stored within the egg

Question 13

Sea urchin have ______ cleavage

Answer 13

Radial

Question 14

______ is where a single layered embryo becomes triple layered

Answer 14

Gastrulation

Question 15

The ______ is formed from the invagination of blastula wall, cells continue to divide but now slide past each other, they pass information from cell to cell to get positional information

Answer 15

Archenteron

Question 16

The opening to the ______ is the ______

Answer 16

Archenteron

Blastocoel

Question 17

In ______ this Operon will be the mount in ______

Answer 17

Protostomes

Deuterostomes

Question 18

______ (mersoderm) grows anterior/posterior, elongating to the animal

Answer 18

Notochord

Question 19

Notochord signals to the overlying ectoderm, causing ______

Answer 19

It to thicken and become future nerve tissue

Question 20

Head region, a ______ forms, spindle region the ______ forms

Answer 20

Neutral plate

Neutral groove

Question 21

______ is formed from two germ layers ectoderm and mesoderm, role is in gas exchange in birds and reptiles by surrounding embryo and other EEM

Answer 21

Chorion

Question 22

______ is formed when two germ layers ectoderm and mesoderm, contains fluid which is a water source of the embryo, keeps it alive and protective cushion

Answer 22

Amnion

Question 23

______ is formed from two germ Lauder endoderm and mesoderm, its role is in nitrogenous waste storage in birds and reptiles

Answer 23

Allantois

Question 24

______ is formed from two germ layers endoderm and mesoderm, its role is in nutrient storage in birds and reptiles

Answer 24

Yolk sac