Deck 1: Development and Structure of Cells and Tissues

Question 1

DNA replication takes place during the G1 phase of the cell cycle.

Answer 1

False

Question 2

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

Answer 2

False

Question 3

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

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

Answer 3

G1 phase

Question 4

Which cellular component facilitates protein synthesis?

A) Ribosomes
B) Lysosomes
C) Mitochondria
D) Plasmalemma

Question 5

The _______ provides an ideal environment for the implantation and growth of the embryo.

A) ovary
B) uterine tube
C) myometrium
D) endometrium

Question 6

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

Question 7

Which best describes diapedesis?

A) Programmed cell death and fragmentation
B) A protective mechanism in the immunologic defense of the body
C) The development of a cartilage disk in the neck of each long bone
D) The migration of leukocytes between endothelial cells to the site of infection

Question 8

Mitochondria produce which chemical for intracellular energy?

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

Question 9

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

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

Question 10

Which organelle produces microtubules?

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

Question 11

Which chemical is called the second messenger?

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

Question 12

Intercalated disks are present in which type of muscle?

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

Question 13

Developmental abnormalities are not associated with which number of chromosomes?

A) 44
B) 45
C) 46
D) 47

Question 14

The cell may contain more than one nucleolus.

Question 15

The information in mRNA is translated by ribosomes located on the surface of the rough endoplasmic reticulum.

Question 16

Spindles present during mitosis are attached to centromeres.

Question 17

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

Question 18

Fertilization takes place in the distal part of the uterine tube.

Question 19

Melanocytes are responsible for skin pigment.

Question 20

T cells,B cells,NK cells,and macrophages are produced in the _________.

A) spleen
B) cerebellum
C) lymph nodes
D) bone marrow

Question 21

Tissues are most susceptible to teratogens during the proliferative period.

Question 22

Myotome produces ___________ tissue.

Question 23

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

Question 24

The umbilical system carries oxygenated blood.

Question 25

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

Question 26

The embryonic skeleton first forms as bone.

Question 27

Name two hormones produced by the placenta.

Question 28

Smooth muscle is consciously controlled.

Question 29

The foramen ovale is an opening between the right and left atria of the heart.

Question 30

Name three adult structures that are derived from ectoderm.

Question 31

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

Question 32

The cardiovascular system originates from chondroblasts.

Question 33

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

Question 34

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