What is/are the stimulus(-i) for contraction of the arrector pili muscles?

A) Low blood pH
B) Dry skin
C) Cold temperature or fear
D) Hot temperature
E) Hot temperature or fear

All of the following regions are visible on the anterior view of the body, except the ________ region.

A) antecubital
B) sacral
C) tarsal
D) axillary
E) crural

The most significant difference between archaea and bacteria is the:

A) lack of a nuclear envelope in archaea.
B) absence of the 70S ribosomes in bacteria.
C) presence of a single filament flagellum in bacteria.
D) absence of peptidoglycans in the cell walls of archaea.
E) presence of fatty acids in the plasma membranes of archaea.

The stage of labor in which the fetus is expelled is the ________ stage.

A) first
B) second
C) third
D) fourth
E) fifth

Which of the following refers to the expression of an intermediate phenotype in heterozygous individuals?

A) Pleiotropy
B) Incomplete dominance
C) Complete dominance
D) Codominance
E) Dihybrid cross

A heterozygous fruit fly with normal wings and a gray body (VvBb) is crossed with homozygous flies with vestigial wings and black bodies (vvbb) . This type of cross is known as a

A) monohybrid cross.
B) dihybrid cross.
C) polytropic cross.
D) true breeding cross.
E) chromosomal cross.

The symplast:

A) greatly increases the surface area of the root.
B) is a waterproof band surrounding the endodermis.
C) is a continuum of living cytoplasm.
D) secretes suberin, which waterproofs the cells.
E) allows nutrient minerals to move against their concentration gradient.

The three major arteries of the upper limb that form a continuum are the ________.

A) brachial, radial, and ulnar arteries
B) brachial, axillary, and radial arteries
C) subclavian, axillary, and radial arteries
D) subclavian, axillary, and brachial arteries
E) cephalic, basilic, and brachial arteries

In a population of 10,000 organisms, over a one-year period, there are 750 births and 130 deaths. Calculate the growth rate for that year.

A) 0.062
B) 0.055
C) 0.088
D) 0.013
E) 0.075

Which of the following procedures would most likely be used to identify a specific individual?

A) DNA cloning
B) transgenic DNA
C) polymerase chain reaction
D) DNA fingerprinting
E) genetic engineering