Li Final Exam 2023 Flashcards | StudBud
  • 16
    What phylum is the most numerous?
    • arthropoda
    • echinodermata
    • mollusca
    • chordata
  • 17
    What is the role of the Purkinje fibers in the heart?
    • It is the primary pacemaker
    • Conducts action potentials throughout the ventricles
    • Opens and closes the semilunar valves so blood can pass through
    • Open and close the bicuspid and tricuspid valves so blood can pass through
  • 18
    What is one of the functions of the hindbrain
    • Emotions
    • Respiration and cardiovascular regulation
    • Memory
    • Regulation of basic body functions
  • 19
    Which is not an example of negative feedback?
    • Contractions in childbirth
    • You go outside in a t-shirt and it’s snowing so you start shivering
    • You eat food and your blood sugar skyrockets so you release insulin
    • High blood pressure due to specific diet can lead to a decreased heart rate
  • 20
    Which of the following correctly orders the development of a fruit?
    • None of the above
    • Pollination, fertilization, embryo, ovary matures
    • Pollination, embryo, fertilization, ovary matures
    • Fertilization, embryo, ovary matures, pollination
  • 21
    Cnidarians have a nervous system.
    • False
    • True
  • 22
    A graded potential will always lead to an action potential.
    • True
    • False
  • 23
    What type of succession is occurring?
    • Inhibition
    • Unable to tell from data provided
    • Tolerance
    • Facilitation
  • 24
    The flower below has what type of inflorescence?
    • umbel
    • head
    • spike
    • raceme
  • 25
    What factors determine systemic blood pressure?
    • Total peripheral resistance
    • heart rate
    • all of the above
    • cardiac output
  • 26
    This image shows a ______
    • eudicot root
    • monocot stem
    • eudicot stem
    • monocot root
  • 27
    Sensory neurons send signals to the CNS and motor neurons send signals away from the CNS
    • True
    • False
  • 28
    Which of the following is true about glial cells
    • Glial cells surround the nodes of ranvier to insulate electrical impulses
    • glial cells surround the cell body for protection
    • None of the above
    • Glial cells surround the axon to insulate electrical impulses
  • 29
    The cohesion-tension model describes positive water pressure climbing to negative water pressure by transpiration.
    • True
    • False
  • 30
    Nitrification is:
    • Bacteria produce N2
    • Formation of organic nitrogen compounds
    • When bacteria oxidize ammonia or ammonium to nitrate ions
    • When bacteria produce ammonia or ammonium
  • 31
    Which of the following places the levels of organization in order of increasing size:
    • Atoms – tissue – population – ecosystem – biosphere
    • Organism – community – population – ecosystem – biosphere
    • Cells – tissue – organ – community – population
    • Organ – tissue – population – community – ecosystem
  • 32
    Which of the following is not one of the fundamental tissues in an animal body?
    • Nervous
    • Epithelial
    • Lumen
    • Connective
  • 33
    In the diagram, the arrows are pointing to the ________ and carry blood ______ the heart.
    • Left pulmonary veins, to
    • Left pulmonary artery, away
    • Right pulmonary artery, to
    • Right pulmonary veins, away
  • 34
    What features distinguish bryophytes from other plants?
    • All of the above
    • Sporophytes dependent on gametophyte
    • Nonvascular
    • Gametophyte dominant
  • 35
    The relationship between ants nesting in acacia trees where the ants trim away competing plants is called:
    • Parasitism
    • Resource-base mutualism
    • Commensalism
    • Defensive mutualism
  • 36
    Using what structure do insects rid their body of waste?
    • malpighian tubules
    • kidneys
    • protonephridia
    • metaniphridia
  • 37
    In the circulatory system of a frog, _______ blood is pumped to the _______.
    • Mixed, skin
    • O2-poor, body tissues
    • Mixed, body tissues
    • O2-rich, skin
  • 38
    Chitin is to _________ as cellulose is to _________. 
    • Fungi, plants
    • Fungi, animals
    • Plants, fungi
    • Animals, fungi
  • 39
    What blood vessels are primarily responsible for regulating blood pressure and flow?
    • Arterioles
    • Venules
    • Veins
    • Arteries
  • 40
    Which of the following is not considered a tracheophyte?
    • lycophyte
    • seed-producing plants
    • bryophytes
    • pteridophytes
  • 41
    A is pointing to the _________ which __________
    • Axon hillock, initiates signal output
    • Axon terminal, transmits signal
    • Cell body, contains most cell organelles
    • Dendrites, input signals
  • 42
    A food chain is more complex than a food web
    • False
    • True
  • 43
    Platyhelminthes have a(n) _________
    • Single circulation
    • closed circulatory system
    • Gastrovascular cavity
    • Open circulatory system
  • 44
    What is the correct order of events excretory organs take to rid the body of waste?
    • Filtration, reabsorption, secretion, excretion
    • Filtration, excretion, reabsorption, secretion
    • Filtration, secretion, excretion, reabsorption
    • Excretion, filtration, secretion, reabsorption
  • 45
    You go to the doctor and a hammer is used to hit below your knee. What neurons are responsible for the kick response?
    • motor neuron
    • sensory neuron
    • autonomic neuron
    • interneuron
  • 46
     Which organism is most efficient at obtaining oxygen?
    • Birds
    • all are equally efficient
    • Fish
    • Mammals
  • 47
    What initiates the heartbeat?
    • right atrium
    • purkinje fibers
    • AV node
    • SA node
  • 48
    Which of the following is not part of the midbrain?
    • Pons
    • Midbrain
    • Medulla oblongata
    • Brainstem
  • 49
    The ______ is the innermost meningeal layer.
    • Arachnoid matter
    • subarachnoid space
    • Pia matter
    • Dura matter
  • 50
    A plasmolyzed cell has a solute potential of -1.5 MPa. What is the water potential of the cell?
    • 1.5 MPa
    • 0 MPa
    • Can’t solve with the given information
    • -1.5 MPa
  • 51
    What is true regarding the function of the root endodermis?
    • stop sol. from returning to outer tissues so sol. are high in vasc. tissue
    • Allows all solutes to enter
    • Prevents all solutes from entering
    • stop sol. from returning to outer tissues so sol are low in vascular tissue
  • 52
    Which of the following conditions would cause an island to have a low species diversity?
    • Small, close to mainland
    • Large, close to mainland
    • Small, far from mainland
    • Large, far from mainland
  • 53
    During the Dust Bowl, a drought struck the Great Plains. What kind of population regulating factor is this?
    • Density-independent
    • Inverse density-dependent
    • Density-dependent
    • A drought is not a population regulation factor
  • 54
    What effect does acetylcholine have on the CNS?
    • Promotes digestion
    • Stimulates skeletal muscle at neuromuscular junctions
    • Stimulates the brain
    • Inhibits cardiac muscle
  • 55
    What type of cells are present at each apical meristem?
    • sclerenchyma
    • parenchyma
    • collenchyma
    • stem cells
  • 56
    When you are running a marathon, the O2 dissociation curve will shift to the _______.
    • Left
    • Right
    • No shift
  • 57
    The section that A is pointing to is referred to as the:
    • root apical meristem
    • Zone of maturation
    • root cap
    • zone of elongation
  • 58
    Number 3 is pointing to the ________ which _______
    • Spongy mesophyll, facilitates the exchange of gasses
    • Palisade mesophyll, facilitates the exchange of gasses
    • Palisade mesophyll, is where most photosynthesis occurs
    • Guard cells, controls gas exchange
  • 59
    Water flows ______ xylem near the source cell and flows _______ xylem near the sink cells.
    • out of, out of
    • into, into
    • out of, into
    • into, out of
  • 60
    What is the value of x?
    • 0.74
    • 0.36
    • 0.76
    • 0.64
  • 61
    Which of the following is an advantage to the nitrogenous waste that fish produce?
    • low energy loss
    • low water solubility
    • none of the above
    • low toxicity
  • 62
    Surfactant functions to:
    • Dilate bronchioles
    • Reduce surface tension of water in alveoli
    • Transport O2 into capillaries
    • Remove excess water from lungs
  • 63
    In the circulatory system of a bird, the right ventricle pumps blood_______
    • From the heart to the body tissues
    • From the heart to the lungs
    • From the body to the heart
    • From the lungs to the heart
  • 64
    In roots, apoplastic transport stops upon reaching what?
    • cortex
    • epidermis
    • pericycle
    • endodermis
  • 65
    Animals evolved from…
    • Fungi
    • Choanoflagellate-like ancestor
    • S. cerevisiae
    • Bacteria
  • 66
    How do decomposers help other organisms in an ecosystem?
    • They breakdown dead organisms and add nutrients back to the soil
    • They help disperse seeds for plant growth
    • Decomposers do not help other organisms in an ecosystem
    • They use light to make their own food that other organisms eat for energy
  • 67
    High H20 potential in the sieve tube elements of the phloem drives the bulk flow of H20 from adjacent xylem to phloem
    • False
    • True
  • 68
    Which community has a greater diversity?
    • B
    • A
  • 69
    Upon inhalation, the diaphragm contracts and the chest cavity expands, _________ pressure and drawing air into the lungs
    • decreasing
    • increasing
    • there's no change in pressure
  • 70
    Interspecific exploitation occurs btwn individs of the same pop in reduction/depletion of availability of a resource
    • True
    • False
  • 71
    Eumetazoa are defined by the critical innovation of:
    • Multicellularity
    • Multicellularity
    • Development of tissues
    • Endoskeleton development
  • 72
    Phloem transport is driven by differences in turgor pressure that occur between cells of a _____ and ________.
    • Source, sink
    • xylem, phloem
    • Sink, source
    • Companion, source
  • 73
    How much will population change in 1 year?
    • 30
    • 90
    • 105
    • -30
  • 74
    Which of the following communities will have the highest species richness?
    • A community with a high biomass on a peninsula
    • A large mountainous region with a low level of disturbance
    • A very young community near the north pole
    • A very old community experiencing a medium level of disturbance
  • 75
    A secondary consumer can also be classified as a(n):
    • carnivore
    • autotroph
    • detritivore
    • herbivore
  • 76
    What type of survivorship curve would a mosquito follow?
    • Type III
    • Type II
    • Type IV
    • Type I
  • 77
    Food chains are short in length due to inefficient energy transfer between trophic levels.
    • True
    • False
  • 78
    In comparing angiosperms and gymnosperms, which of the following is false?
    • Angiosperms produce fruits
    • Both have double fertilization
    • Angiosperms are mostly animal pollinated
    • angiosperms have an endosperm
  • 79
    Sap in xylem flows via pressure pushing, whereas sap in phloem flows via tension pulling.
    • False
    • True
  • 80
    Gymnosperms are to mosses as __________ is/are to amphibians.
    • Mammalia
    • Chondrichthyes
    • Reptiles
    • Echinodermata
  • 81
    What is the production efficiency?
    • 1.6%
    • 80.7%
    • 9.0%
    • 1.9%
  • 82
    The image above shows the flower of a monocot plant. 
    • True
    • False
  • 83
    What is the trophic-level transfer efficiency?
    • 89%
    • 0.089%
    • 11.2%
    • 8.9%
  • 84
    Which of the following is a factor that maintains the resting membrane potential of a neuron?
    • More Na+ going out via channels
    • An equal amount of Na+ and K+ going out via channels
    • Membrane impermeable to ions
    • Na+/K+-ATPase pump
  • 85
    Which of the following is a critical innovation of pteridophytes?
    • euphylls
    • supportive vascular tissues
    • seed endosperm
    • ovules
  • 86
    Protostome development is characterized by _______ and ________ cleavage.
    • Determinant, radial
    • Indeterminate, radial
    • Determinant, spiral
    • indeterminate, spiral
  • 87
    What is ecology
    • study of abiotic interactions among organisms/between them and their enviro
    • biotic/abiotic interactions among organisms/between organisms and enviro
    • The field of biology concerned with grouping/classification of species
    • study of biotic interactions among organisms/between them and their environ
  • 88
    Respiration and photosynthesis are central to this process
    • water cycle
    • phosphorous cycle
    • nitrogen cycle
    • carbon cycle
  • 89
    Which of the following is not one of the characteristics of chordates?
    • Fibrous notochord
    • Vertebral column
    • Post-anal tail
    • Hollow dorsal nerve
  • 90
    In a food chain, energy flows in one direction
    • False
    • True
  • 91
    Open circulatory system has high blood pressure while closed circulatory systems have low blood pressure.
    • True
    • False
  • 92
    Secretion is:
    • The filtering of excess fluid and waste products out of the blood
    • The mvmnt of waste/hydrogen ions from the renal tubule into the capillaries
    • The movement of water and solutes from the tubule back into the blood
    • The mvmnt of waste/hydrogen ions from the capillaries into the renal tubule
  • 93
    What is the net reproductive rate and is the population growing or shrinking?
    • 0.72, growing
    • 0.72, shrinking
    • 0.54, growing
    • 0.54, shrinking
  • 94
    Fungi are _________ and use __________ as a mechanism to obtain nutrients from their environment
    • Heterotrophic, mycelium
    • Autotrophic, osmotrophy
    • Autotrophic, photosynthesis
    • Heterotrophic, absorptive nutrition
  • 95
    Arthropods have a _________ circulatory system and use ________
    • Closed, hemolymph
    • Open, hemolymph
    • Open, blood
    • Closed, blood
  • 96
    Based on the graph, population A is growing ________ than population B and r is ________ than r of population B.
    • Slower, less
    • Slower, greater
    • Faster, greater
    • Faster, less
  • 97
    Nonvenemous scarlet king mimics the coral snake as a strategy to avoid being eaten by predators. What type of strategy?
    • aposematic coloration
    • red and yellow
    • Batesian mimicry
    • mullerian mimicry
  • 98
    Crocodiles have _______ atria and _______ ventricle(s).
    • 2, 2
    • 1, 2
    • 1, 1
    • 2, 1
  • 99
    What organism is liable to have the most ineffective transfer of energy?
    • Endotherms
    • Vertebrates
    • Ectotherms
    • Invertebrates
  • 100
    what critical innovation developed at A
    • Limbs
    • Amniotic egg
    • Milk
    • Lungs