1) as lymph passes through the sinuses of lymph nodes, it is filtered by ______ that
engulf debris and pathogens.
a. t cells
b. b cells
c. neutrophils
d. macrophages
2) homologous structures such as the bones in wings, flippers, and arms would be
studied in the field of
a. comparative anatomy.
b. biogeography.
c. the fossil record.
d. comparative embryology.
e. comparative biochemistry.
3) some desert beetles can live out their life without ever drinking liquid water. they
survive on “metabolic water,” which
a. was produced as water in the organisms they eat and is retained, never to pass out of
the cell membrane.
b. is absorbed from the air along with respiratory oxygen.
c. is formed as a result of the reduction of oxygen as the final electron acceptor from the
electron transport chain.
d. is a breakdown product from glycolysis in the cytoplasm.
e. is an original storehouse of water that is never allowed to pass out the cell membrane.
4) which property of water allows it to act as a transport medium?
a. cohesion
b. high heat of evaporation
c. high heat capacity
d. water is solvent
e. the frozen form is less dense than the liquid form
5) binary fission in bacteria differs from mitosis because
a. the chromosome copies attach to the plasma membrane and are pulled apart by cell
growth.
b. the chromosome is a simple dna strand without complex proteins and no spindle
forms.
c. there is no nuclear membrane to break down and rebuild.
d. all of the choices are correct.
e. none of the choices are correct.
6) which of the following mechanisms is not as likely to disperse seeds at a great
distance from the parent plant?
a. coconuts are carried by ocean currents.
b. squirrels bury seeds and nuts for future use.
c. seeds are dispersed as projectiles from the parent plant.
d. hooks and spines attach the seed to animal fur or human clothing.
e. seeds eaten with fruit by animals are dropped with the animals’ feces.
7) oxygen-poor blood becomes oxygen-rich blood in the capillary beds of the
a. trachea.
b. bronchi.
c. bronchioles.
d. alveoli.
e. larynx.
8) which statement below lists the correct steps for binary fission?
a. 1. attachment of chromosome to the plasma membrane, 2. enlargement of cell
volume, 3. dna replication occurs, 4. cell elongates and chromosomes are pulled apart,
5. a new cell wall and plasma membrane divide the cell in half
b. 1. attachment of chromosome to the plasma membrane, 2. enlargement of cell
volume, 3. dna replication occurs, 4. a new cell wall and plasma membrane divide the
cell in half, 5. cell elongates and chromosomes are pulled apart
c. 1. a new cell wall and plasma membrane divide the cell in half, 2. attachment of
chromosome to the plasma membrane, 3. enlargement of cell volume, 4. dna replication
occurs, 5. cell elongates and chromosomes are pulled apart
d. 1. enlargement of cell volume, 2. attachment of chromosome to the plasma
membrane, 3. dna replication occurs, 4. cell elongates and chromosomes are pulled
apart, 5. a new cell wall and plasma membrane divide the cell in half
9) freshwater protozoans react to a/an _____ environment by removing water through
_____.
a. hypertonic, turgor pressure
b. hypotonic, turgor pressure
c. isotonic, a contractile vacuole
d. hypertonic, a contractile vacuole
e. hypotonic, a contractile vacuole
10) what complications could arise if an individual had a genetic disorder that
prevented them from forming 25% of theirhistones?
a. the chromatin would not condense properly and some of it would not be available for
transcriptional machinery resulting in the expression of additional genes.
b. the chromatin would not condense properly and some of it would not be available for
transcriptional machinery resulting in the decreased expression of their genes.
c. the chromatin would condense more than normal and result in the expression of
additional genes.
d. the chromatin would condense more than normal and result in the expression of
fewer than normalgenes.
11) removal of the anterior pituitary would result in a decrease in the following
functions:
a. production of eggs and sperm, stimulation of the thyroid, cell division and production
of glucocorticoids
b. production of eggs and sperm, control of the circadian rhythm, cell division and
production of glucocorticoids
c. melatonin levels, stimulation of the thyroid, cell division and production of
glucocorticoids
d. production of eggs and sperm, stimulation of the thyroid, maturation of t
lymphocytesand production of glucocorticoids
12) species x reproduces asexually by fission and species y reproduces sexually.
consider that all other relevant characteristics are similar between these species. when
the environment changes, then
a. species x and y will have an equal chance of surviving.
b. species y should have a better chance of surviving than species x.
c. species x should have a better chance of surviving than species y.
d. neither species should have an advantage in surviving since organisms often become
extinct when the environment changes.
13) which type of immunity is characterized by the production of receptors that will
bind to specific antigens?
a. adaptive
b. innate
c. both adaptive and innate
d. neither adaptive or innate
14) during which stage of the cell cycle is cell growth and replication of organelles
most significant?
a. m phase
b. g1 phase
c. g2 phase
d. s phase
e. g0 phase
15) which of the following features are necessary to classify a plant as a monocot?
a. the plant will contain one cotyledon, have parallel veins in the leaves and the flowers
will be in multiples of threes.
b. the plant will contain two cotyledons, have parallel veins in the leaves and the
flowers will be in multiples of threes.
c. the plant will contain one cotyledon, have a netted vein patternin the leaves and the
flowers will be in multiples of threes.
d. the plant will contain one cotyledon, have parallel veins in the leaves and the flowers
will be in multiples of fours or fives.
e. the plant will contain one cotyledon, have vascular bundles in a distinct ring and the
flowers will be in multiples of threes.
16) of the following, which is not associated with the mitochondria?
a. atp production
b. cristae
c. stroma
d. matrix
17) an atom’s atomic mass is best described as the mass of
a. the protons it contains.
b. the neutrons it contains.
c. electrons in the outermost shell.
d. protons and neutrons it contains.
e. protons and electrons it contains.
18) the process in which neighboring cells influence the development of each other,
either by direct contact or by production of chemical signals, is
a. neurulation.
b. gastrulation.
c. induction.
d. maternal determinants.
e. homeotic pattern formation.
19) if white eyes are produced by a recessive allele, what is the likely genotype of a
white individual?
a. ww
b. ww
c. ww
d. cw