Which is not part of the axial skeleton?
A. Vertebral column
B. Clavicle
C. Mandible
D. Rib
B. Clavicle
100
Intracellular parasites that consist of DNA or RNA surrounded by a protein coat and sometimes by lipoprotein envelope are called:
a. protozoa
b. fungi
c. viruses
d. bacteria
c. viruses
100
The three types of elements that make up the periodic table are ______, ___________, and __________.
metals, nonmetals, and semiconductors
100
______________ are the most reactive metals.
alkali metals
100
A __________ is a positively charged ion.
cation
200
An area of cytoplasm that coordinates the building and breaking of microtubules is called?
A. cytoplasm
B. mitochondria
C. Centrosome
D. ribosomes
C. Centrosome
200
Going from superior to inferior, the sequence of the vertebral column is:
cervical, thoracic, lumbar, sacral, and coccyx
200
The periodic table consists of mostly __________.
metals
200
_____________ react with other elements but not as well as the alkali metals.
alkaline-earth metals
200
A(n) ________ is a negatively charged ion.
anion
300
In what area of the body would you expect to find an especially thick stratum corneum?
a. the back of the hand
b. thigh
c. abdomen
d. sole of foot
d. sole of foot
300
The hypodermis:
a. connects the dermis and the epidermis
b. is the layer of skin where the nails are produced.
c. is the layer of skin where the hair is produced.
d. connects the dermis to underlying tissues
connects the dermis to underlying tissues
300
____________ can conduct electricity under some conditions.
semiconductors
300
________________ can form more than one differently charged ion.
transition metals
300
How many valence electrons does group 16 have?
6
400
The axial skeleton consists of:
a. 80 bones
b. 81 bones
c. 82 bones
d. 84 bones
80 bones
400
This plane divides an individual into upper and lower parts:
a. superficial
b. transverse
c. frontal
d. sagittal
transverse
400
_________, if solid, are dull, brittle, and insulators.
nonmetals
400
___________ are the most reactive nonmetals and react with metals to form salts.
halogens
400
An atom that has the same number of protons as other atoms of the same element but that has a different number of neutrons is called a(n) __________.
isotope
500
The largest of the paranasal sinuses is found in this bone.
a. frontal
b. ethmoid
c. sphenoid
d. maxilla
d. maxilla
500
Which family on the periodic table is located in group 18 and are chemically inert?
noble gases
500
__________ are lustrous, malleable, and ductile.
metals
500
__________ exist as single atoms and do not react with other atoms.
noble gases
500
What is the mass in grams of 2.50 mol of sulfur, S?