Question 1

Which phase of the cell cycle is characterized as the initial resting stage?

Accepted Answer

A)   S phase
B)   G1 phase
C)   G2 phase
D)   Prophase B

Question 2

Posttranslational modifications to proteins produced by the rough endoplasmic reticulum are accomplished by __________.

Accepted Answer

A)   mitochondria
B)   Golgi apparatus
C)   messenger RNA
D)   smooth endoplasmic reticulum B

Question 3

Tissues are most susceptible to teratogens during the proliferative period.

Accepted Answer

A) True 
 B)False  False

Question 4

The foramen ovale closes during the third week of prenatal life.

Accepted Answer

A) True 
 B)False

Question 5

Which organelle produces microtubules?

Accepted Answer

A)   Nucleus
B)   Centriole
C)   Golgi apparatus
D)   Endoplasmic reticulum

Question 6

The ovum contains twice as many chromosomes as its parent cell.

Accepted Answer

A) True 
 B)False

Question 7

___________bone formation occurs directly through a tight matrix of collagen fibers,which slowly calcify into bone.

Accepted Answer

The answer of ___________bone formation occurs directly through a tight...

Question 8

Spindles present during mitosis are attached to centromeres.

Accepted Answer

A) True 
 B)False

Question 9

Before the development of the vascular system,the vitelline system provides nutrients to the embryo.

Accepted Answer

A) True 
 B)False

Question 10

The embryonic skeleton first forms as bone.

Accepted Answer

A) True 
 B)False

Question 11

Myotome produces ___________ tissue.

Accepted Answer

The answer of Myotome produces ___________ tissue....

Question 12

Which chemical is called the second messenger?

Accepted Answer

A)   aDNA
B)   mRNA
C)   dGMP
D)   cAMP

Question 13

Smooth muscle is consciously controlled.

Accepted Answer

A) True 
 B)False

Question 14

Each tissue originates from mesoderm,except one.What is the exception?

Accepted Answer

A)   Bone
B)   Liver
C)   Blood
D)   Muscle

Question 15

Mitochondria produce which chemical for intracellular energy?

Accepted Answer

A)   ADP
B)   ATP
C)   RNA
D)   DNA

Question 16

Endoderm and ectoderm are the first two germ layers to develop.

Accepted Answer

A) True 
 B)False

Question 17

Intercalated disks are present in which type of muscle?

Accepted Answer

A)   Cardiac
B)   Smooth
C)   Skeletal
D)   Voluntary

Question 18

Blood cells begin to form in the __________ __________ at weeks of development.

Accepted Answer

The answer of Blood cells begin to form in the...

Question 19

Melanocytes are responsible for skin pigment.

Accepted Answer

A) True 
 B)False

Question 20

___________ __________appear in the third prenatal week as the first sign of shape change in the embryo's body.

Accepted Answer

The answer of ___________ __________appear in the third prenatal week...

Exam 1: Development and Structure of Cells and Tissues

Which phase of the cell cycle is characterized as the initial resting stage?

Posttranslational modifications to proteins produced by the rough endoplasmic reticulum are accomplished by __________.

Tissues are most susceptible to teratogens during the proliferative period.

The foramen ovale closes during the third week of prenatal life.

Which organelle produces microtubules?

The ovum contains twice as many chromosomes as its parent cell.

___________bone formation occurs directly through a tight matrix of collagen fibers,which slowly calcify into bone.

Spindles present during mitosis are attached to centromeres.

Before the development of the vascular system,the vitelline system provides nutrients to the embryo.

The embryonic skeleton first forms as bone.

Myotome produces ___________ tissue.

Which chemical is called the second messenger?

Smooth muscle is consciously controlled.

Each tissue originates from mesoderm,except one.What is the exception?

Mitochondria produce which chemical for intracellular energy?

Endoderm and ectoderm are the first two germ layers to develop.

Intercalated disks are present in which type of muscle?

Blood cells begin to form in the at weeks of development.

Melanocytes are responsible for skin pigment.

_ appear in the third prenatal week as the first sign of shape change in the embryo's body.