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Exam 1: Development and Structure of Cells and Tissues

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Question 1

Multiple Choice

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

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

E) A) and B)
F) None of the above

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Question 2

Multiple Choice

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

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

E) B) and D)
F) A) and D)

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B

Question 3

True/False

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Smooth muscle is consciously controlled.

Myotome produces ___________ tissue.

Tissues are most susceptible to teratogens during the proliferative period.

Intercalated disks are present in which type of muscle?

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

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

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

Which organelle produces microtubules?

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

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

The embryonic skeleton first forms as bone.

Melanocytes are responsible for skin pigment.

Mitochondria produce which chemical for intracellular energy?

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

Which chemical is called the second messenger?

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

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

Spindles present during mitosis are attached to centromeres.