Deck 1: Development and Structure of Cells and Tissues

Question 1

Developmental abnormalities are not associated with which number of chromosomes?

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

Answer 1

C

Question 2

Which hormone is produced by the placenta?

A) Follicle-stimulating hormone (FSH)
B) Prolactin
C) Progesterone
D) Adrenocorticotropic hormone (ACTH)

Answer 2

C

Question 3

Each tissue originates from mesoderm,EXCEPT one.Which is the EXCEPTION?

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

Answer 3

B

Question 4

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

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

Question 5

Myotome produces which of the following types of tissue?

A) Connective
B) Muscle
C) Nerve
D) Epithelial

Question 6

Which organelle produces microtubules?

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

Question 7

Which cellular component facilitates protein synthesis?

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

Question 8

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

Question 9

Each of the following is a derivative of ectoderm EXCEPT one.Which is the EXCEPTION?

A) Tooth enamel
B) Tooth dentin
C) Epidermis
D) Nervous system

Question 10

Mitochondria produce which chemical for intracellular energy?

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

Question 11

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

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

Question 12

The cell may contain more than one nucleolus.

Question 13

Blood cells arise from cells called

A) neuroblasts.
B) fibroblasts.
C) osteoblasts.
D) angioblasts.

Question 14

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 15

Which chemical is called the second messenger?

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

Question 16

Intercalated disks are present in which type of muscle?

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

Question 17

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 18

Which represent the first change in shape of the embryo's body from a flat sheet of cells?

A) Formation of the embryonic disk.
B) Formation of neural folds.
C) Formation of cartilage.
D) Migration of myoblasts from the myotome.

Question 19

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

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

Question 20

Which type of bone formation occurs through a tight matrix of collagen fibers,which slowly calcify into bone?

A) Endochondral
B) Intramembranous
C) Epiphyseal
D) Interstitial growth

Question 21

Smooth muscle is consciously controlled.

Question 22

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

Question 23

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

Question 24

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

Question 25

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

Question 26

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

Question 27

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

Question 28

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

Question 29

Tissues are most susceptible to teratogens during the proliferative period.

Question 30

The umbilical system carries oxygenated blood.

Question 31

Melanocytes are responsible for skin pigment.

Question 32

The cardiovascular system originates from chondroblasts.

Question 33

Spindles present during mitosis are attached to centromeres.

Question 34

The embryonic skeleton first forms as bone.