Because of its location in the electron transfer chain, delivery of electrons to each
NADH results in ____ ATPs.
a. 4
b. 2
c. 3
d. 32
e. 0
Melanin protects the skin from
a. desiccation.
b. abrasion.
c. ultraviolet radiation.
d. infrared damage.
e. invasion by bacteria.
The neuron transport proteins that maintain the resting membrane potential and restore
ion gradients following an action potential are
a. sodium-phosphorus passive transporters.
b. sodium-potassium pumps.
c. sodium-chlorine gated channels.
d. phosphorus-calcium pumps.
e. phosphorus-chlorine gated channels.
Which of the following is NOT true of polysaccharides?
a. composed of many linked monosaccharides
b. may be straight and unbranched or highly branched
c. most likely made of glucose molecules if they are one of the natural polysaccharides
d. may be insoluble because of their large size and structure
e. are formed by cleavage reactions
Most species of Gram-positive bacteria are
a. photoautotrophic.
b. photoheterotrophic.
c. chemoautotrophic.
d. chemoheterotrophic.
e. photochemoautotrophic.
The primary thermostat of the body is located in the
a. heart.
b. hypothalamus.
c. medulla oblongata.
d. cerebellum.
e. thyroid gland.
Which of the following represents energy flow in a grazing food web?
a. producers >>> detritivores >>> decomposers
b. producers >>> decomposers >>> detritivores
c. producers >>> herbivores >>> decomposers >>> carnivores
d. producers >>> herbivores >>> carnivores >>> decomposers
e. producers >>> herbivores >>> detritivores >>> carnivores
The figure above represents
a. an exergonic reaction.
b. a metabolic pathway.
c. allosteric inhibition.
d. allosteric activation.
e. all of these.
Females of various species shop around for males that
a. have the best burrows.
b. offer superior nuptial gifts.
c. make showy displays.
d. include any or all of these.
e. include none of these.
Nitrous oxide
a. is a more potent greenhouse gas than carbon monoxide
b. is released in the burning of fossil fuels
c. destroys the ozone
d. is found in synthetic fertilizers
e. is all of the above
Which one of the following is the final consequence of one or more of the others?
a. resource partitioning
b. competition
c. predation
d. parasitism
e. parasitoidism
Opossum
Choose the one most appropriate letter for each.
a. cartilaginous skeleton; jaws
b. reptile with four-chambered heart
c. placental mammal
d. legless amphibian
e. invertebrate chordate; no metamorphosis
f. endotherm with feathers
g. limbless reptile
h. most primitive fishes with jaws; extinct
i. modern-day parasitic jawless vertebrate
j. marsupial
k. adult is called ‘sea squirt”
l. egg-laying mammal
m. swim bladder for buoyancy
n. may be sexually mature in larval form
The effect of directional growth shown in the above figure is known to be caused by
a. thigmotropism.
b. gravitropism.
c. abscisic acid.
d. salicylic acid.
e. all of these.
net primary production
Choose the one most appropriate answer for each.
a. rate at which energy becomes stored in organic compounds through photosynthesis
b. total amount of solar energy stored in organic compounds during photosynthesis
c. a straight-line sequence of steps by which chemical bond energy moves to higher
trophic levels
d. the potential chemical energy remaining (after aerobic respiration by autotrophs) that
can be passed on to other trophic levels
e. DDT in the environment
f. a kind of plant that increases soil nitrogen content
g. particles of organic waste products, dead, or partly decomposed tissues
Where are sugars formed in the chloroplasts?
a. on the outer membrane
b. on the inner membrane
c. in the thylakoid compartment
d. in the stroma
e. within the thylakoid membrane
Franklin worked closely with
a. Wilkins.
b. Watson.
c. Crick.
d. Chargaff.
e. none of these.
Which of the following is an example of a fibrous joint?
a. skull plates
b. humerus to the scapula
c. leg bone connected to the hip bone
d. teeth connected to the jaw
e. all of these
Which is not true of placoderms?
a. They gave birth to live young.
b. They had jaws.
c. They had teeth.
d. They had paired pelvic fins.
e. They had paired pectoral fins.
The kidneys function to rid the body of
a. excess water.
b. excess solutes.
c. toxins and drugs.
d. metabolic wastes.
e. all of these.
Respond to the following items in reference to the four cell types listed below.
a. sensory neurons
b. interneurons
c. motor neurons
d. Schwann cells
A type of neuroglia cell
A salt will dissolve in water to form
a. acids.
b. hydrogen bonds.
c. ions other than H+ and OH.
d. bases.
e. buffers.
A radula is an organ found in
a. gastropods.
b. chitons.
c. bivalves.
d. gastropods and chitons.
e. gastropods, chitons, and bivalves.
Where is hydrogen actively pumped in the mitochondria?
a. To the inner membrane.
b. To the outer membrane.
c. To the intermembrane space.
d. To the matrix.
e. To the cytoplasm.
coitus
Choose the one most appropriate answer for each.
a. the production and secretion of milk
b. sloughing off of endometrium stops permanently
c. induced dislodging and removal of an embryo or fetus from the uterus
d. an abortion that occurs spontaneously
e. the burrowing of the blastocyst into the uterine lining
f. the release of an egg from the ovary
g. the release of seminal fluid from the male reproductive tract
h. a 100-percent-effective method of preventing conception
i. a highly unreliable form of birth control
j. the periodic elimination of the uterine lining
k. characterized by involuntary muscle contractions, release of tension, and warmth
l. sexual intercourse
m. sperm and egg cannot meet because a section of oviduct is missing
n. cutting and tying of vasa deferentia
The ____ prevents food and fluids from entering the ____.
a. epiglottis; larynx
b. pharynx; larynx
c. epiglottis; esophagus
d. pharynx; trachea
e. larynx; pharynx
What kind of reaction produces large molecules by linking small molecules?
a. oxidation
b. reduction
c. condensation
d. hydrolysis
e. decarboxylation
Use the figure above to answer the following questions.
Which stage(s) produce(s) the characteristic chills and fever of the disease?
a. A
b. B
c. C
d. A and B
e. B and C
Which of the following serve as examples of morphological convergence?
a. sharks, penguins, and porpoises
b. panthers and tigers
c. apes and monkeys
d. sharks, skates, and rays
e. mice, rats, and gerbils
Respond to the following statements with reference to the five trophic categories listed
below.
a. producer
b. primary consumer
c. secondary consumer
d. tertiary consumer
e. decomposer
A herbivore is this.
Which of the following is false?
a. The outer coats of all viruses are alike.
b. The virus contains either DNA or RNA at its core, but not both.
c. Viruses infect organisms in all three domains of life.
d. Most viruses have a protein coat or covering.
e. Some viruses benefit us indirectly.
Select the best choice for the following statements in reference to the four hominids
listed below.
a. Homo habilis
b. Homo erectus
c. Homo sapiens
d. Homo neanderthalensis
Our own species evolved from this species.
Learned behavior is recognizable by the ____ the animal makes in its responses.
a. fixed action patterns
b. modifications
c. stereotyping
d. repetitions
e. false starts
Where in a plant cell are chloroplasts found?
a. on the cell membrane
b. in the cytoplasm of the cell
c. in the stroma
d. in the thylakoids
e. none of these