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1) the differences between organic and inorganic molecules do not follow simple
absolute rules. however, most organic molecules are associated with living organisms.
which of the following statements does not correspond to the general distinctions
between these types of molecules?
a. carbon dioxide (co2) lacks hydrogen atoms found in organic molecules.
b. formaldehyde (ch2o) is a small molecule compared to most organic molecules.
c. salt (na+cl-) is not an organic molecule but is important to the life of many
organisms.
d. because they are in living organisms, organic carbon atoms are different from the
inorganic carbon atoms forming the molecular structure of soot or a diamond.
incorrect
2) which of the following statements best describes how plants use hormones during
signal transduction?
a. the hormone will bind to a specific receptor in the plasma membrane. it will then
trigger a series of relay proteins that alter the signal into one that will impact the
cellular machinery. once the machinery is altered a change in gene expression will
occur causing a change in the physical expression of the plant.
b. the hormone will trigger a series of relay proteins to alter the signal into one that will
impact the cellular machinery. once the signal is changed the hormone will bind to a
specific receptor in the plasma membrane. it will then cause a change in gene
expression to occur causing a change in the physical expression of the plant.
c. the hormone will bind to a specific receptor in the plasma membrane. it will then
trigger a series of relay proteins that alter the signal into one that will impact the
cellular machinery. once the machinery is altered a change in the physical expression
will occur causing a change in the actual genes of the plant.
d. none of these describes how plants use hormones during signal transduction.
3) who was the individual who proposed the hypothesis of continental drift during the
1920s?
a. alfred wegener
b. charles darwin
c. alfred russel wallace
d. charles lyell
4) imagine you are working for the florida public health department and you have been
assigned the task of preventing malaria from spreading throughout the southern
everglades. which of the following scenarios would have the greatest chance of
success?
a. spraying the edges of the everglades with a pesticide that will kill mosquitos
b. developing a vaccination that would prevent the ability of the merozoites to
reproduce within the hosts bloodstream
c. devise a insect repellant that would prevent the anopheles mosquito from biting a
human host
d. all of the above are scenarios that would have a chance of success in preventing
malaria from spreading throughout the southern everglades.
5) neurotransmitters are molecules that cross the synaptic cleft and
a. always inhibit the postsynaptic neuron.
b. always excite the postsynaptic neuron.
c. either excite or inhibit the postsynaptic neuron.
d. integrate the pre-synaptic action potential.
e. none of the above.
6) which kind of white blood cell is involved in the production of antibodies?
a. neutrophils
b. b lymphocytes
c. monocytes
d. eosinophils
e. macrophage
7) transitional forms are seen in the fossil record that links all of these groups except
a. birds and reptiles.
b. reptiles and amphibians.
c. fish and amphibians.
d. mammals and birds.
e. mammals and reptiles.
8) all of the following statements about sensory receptors are true except
a. sensory receptors monitor the internal environment of the body.
b. chemoreception is believed to be a primitive sense in animals.
c. sensory receptors for taste are found in the nose and mouth.
d. the retina of the eye contains photoreceptors that are sensitive to light.
e. photoreceptors include rod and cone cells.
9) which of the following statements about the glomerulus is incorrect?
a. blood pressure primarily accounts for filtration.
b. small molecules move from the glomerular (bowman's) capsule into the glomerulus.
c. it is composed of capillaries.
d. it is connected to arterioles at both ends.
e. it is surrounded by the glomerular (bowman's) capsule.
10) match the layers of a pericarp with their correct description.
1> endocarp a. the outermost skin of a fruit
2> exocarp b. the fleshy tissue of a fruit
3> mesocarp c. serves as a boundary around the seed
11) which protist is not correctly linked to the type of movement it shows?
a. amoeboidspseudopodia
b. ciliates-cilia
c. zooflagellatesflagella
d. sporozoanflexing the pellicle
incorrect
12) the lining of the uterus that is discharged during the menstrual phase is the
a. endocardium.
b. endometrium.
c. oviduct.
d. hymen.
e. myocardium.
13) the main features that place homo habilis in the genus homo rather than
australopithecus are
a. human facial appearance and lack of hair.
b. advanced use of language and total carnivorous diet.
c. brain size, dentition, and tool use.
d. care of young and altruistic behavior.
e. hand grip, extensive use of tools, and house-building.
14) which system develops first in the embryo?
a. reproductive
b. circulatory
c. nervous
d. respiratory
e. excretory
15) inhibin is a hormone that
a. decreases sexual urges.
b. is involved in a positive feedback relationship with the hypothalamus to regulate
maturation of eggs in the oviduct.
c. is involved in a negative feedback relationship with the anterior pituitary and
hypothalamus to regulate testosterone levels.
d. is involved in a negative feedback relationship with the anterior pituitary and
hypothalamus to trigger ovulation in females.
e. prevents or inhibits erection.
16) some viruses never use dna to carry out protein synthesis and have only rna as their
genetic material. this would lend evidence to which theory?
a. rna-first hypothesis
b. protein-first hypothesis
c. simultaneous evolution of rna and proteins
d. endosymbiotic theory of eukaryote evolution
