Mastering Biology MCQs
Mastering Biology MCQs
Answer these 100+ Mastering Biology MCQs and see how sharp is your knowledge of Mastering Biology. Scroll down and let's start!
1: These molecules are _____.
A. Amines
B. Enantiomers
C. Structural isomers
D. Thiols
2: The wing of a penguin is ________ the wing of a butterfly.
A. Analogous to
B. Homo erectus
C. Homologous to
D. They ingest food
3: This pair of molecules are _____.
A. Enantiomers
B. Isomers
C. Not isomers
D. Parkinson's disease
4: Trace elements _____.
A. Are very rare on Earth
B. Are required in very small amounts
C. Enhance health but are not essential for long-term survival
D. Can be used as labels to trace atoms through an organism's metabolism
5: Two fundamental concepts about the ion channels of a ""resting"" neuron are that the channels _____.
A. K+ would move out of the cell, Na+ would move into the cell
B. Minimum depolarization needed to operate the voltage-gated sodium and potassium channels
C. Na+ channel opening (when K+ channels open, K+ goes out, causing the cell to become more negative.)
D. Open and close depending on stimuli and are specific as to which ion can traverse them
6: When interspecific competition has an outcome called competitive exclusion, _________.
A. Both species will continue to coexist
B. The inferior competitor will continue to reside in the niche but at reduced numbers
C. Both species will become extinct
D. The inferior competitor will be eliminated
7: Endocytosis moves materials _____ a cell via
A. Out of ... membranous vesicles
B. Into ... membranous vesicles
C. Into ... a transport protein
D. Into ... facilitated diffusion
8: In glycolysis, atp molecules are produced by _____.
A. Photophosphorylation
B. Oxidative phosphorylation
C. Photosynthesis
D. Cellular respiration
E. Substrate-level phosphorylation
9: Zygosporangia are _____.
A. Diploid
B. Haploid
C. Heterokaryotic
D. Haplodiploid
10: Increased water reabsorption in the descending limb of the nephron loop will result in __________.
A. Decreased NaCl concentration in the filtrate of the ascending limb
B. Increased NaCl reabsorption in the ascending limb
C. Increased water reabsorption in the ascending limb
D. Decreased filtrate concentration at the turn of the loop
11: A white blood cell engulfing a bacterium is an example of _____
A. Phagocytosis
B. Exocytosis
C. Facilitated diffusion
D. Pinocytosis
12: Differential gene expression is the result of different cells containing different ______.
A. Regulatory proteins
B. Genes
C. Nucleosomes
D. Regulatory sequences
13: A water molecule can bond to up to _____ other water molecules by ____ bonds.
A. Hydroxide ion
B. Four ... hydrogen
C. Electronegativity
D. Polar covalent
14: ____ provide(s) the information for the assembly of amino acids into a particular protein.
A. DNA
B. RNA
C. TRNA
D. None of these
15: _____ are toxins that are the lipopolysaccharide of the outer membrane of gram-negative cell walls.
A. Exotoxins
B. Endotoxins
C. Enterotoxins
D. Hemolysins
16: _______ are present in prokaryotes, and bind to and direct the polymerase to specific promoters.
A. Nucleosome
B. Ubiquitin
C. Sigma factors
D. Repressor
17: In the theme of biological organization, the approach called reductionism __________.
A. Allows us to reduce complex systems to simpler components that are more manageable to study
B. Adaption through natural selection
C. Descent from a common ancestor
D. None of these
18: On an evolutionary tree, __________.
A. Homologous characteristics form a nested pattern
B. Poorly adapted individuals never produce offspring.
C. Had been created by divine intervention a few thousand years before
D. The common ancestor of the lineages beginning there and to the right of it
19: Passive movement of a solute by a carrier protein is called __________.
A. Facilitated diffusion
B. Dissolve in lipids
C. Hypotonic
D. Proteins
20: Saltatory propagation occurs in _________ axons, in which action potentials _________.
A. Unmyelinated; spread by depolarizing the adjacent region of the axon membrane
B. Myelinated; move continuously along the axon toward the axon hillock
C. Unmyelinated; move from one node of Ranvier to another
D. Myelinated; move from one node of Ranvier to another
21: The benthic zone of aquatic environments is defined as the _____.
A. Substrate at the bottom
B. Estuary
C. Marine
D. None of these
22: The channels that provide for the movement of potassium in the resting neuron are _______.
A. Leakage
B. Increased
C. Sodium-potassium pump
D. None of these
23: The observed distribution of alleles into gametes is an illustration of _____
A. Mendel's law of independent assortment only
B. Mendel's laws of segregation and independent assortment
C. Mendel's law of segregation only
D. Eimer's principle
E. Thienemann's rule
24: Throughout most of human history, human population size _____.
A. Was at carrying capacity
B. Grew very slowly
C. Skyrocketed
D. Showed boom and bust cycles
25: In signal transduction, phosphatases _____.
A. Move the phosphate group of the transduction pathway to the next molecule of a series
B. Prevent a protein kinase from being reused when there is another extracellular signal
C. Amplify the second messengers such as cAMP
D. Inactivate protein kinases and turn off the signal transduction
26: Sexual reproduction includes a reproductive pattern called _____.
A. Fragmentation
B. Fission
C. Regeneration
D. Budding
E. Hermaphroditism
27: Each water molecule is joined to _____ other water molecules by ____ bonds.
A. (a), (b), and (c).
B. Both (a) and (b)
C. Four ... hydrogen
D. Both (a) and (b).
28: The major difference between angiosperms and gymnosperms comes from the _____.
A. Presence or absence of a protective covering over the ovule
B. Within an ovule contained within an ovary of a flower
C. Pollen grain
D. Megaspores or microspores
29: Blood is best classified as connective tissue because _____.
A. Connective tissue often consists of relatively few cells embedded in an extracellular matrix.
B. It is a loose weave of fibers that functions as a packing material.
C. Its cells are separated from each other by an extracellular matrix.
D. There is a decrease in the surface-to-volume ratio.
30: This is an animation of the movement of water and ions through the root ______.
A. Via the apoplastic route.
B. Chlorine ions
C. Hydrogen
D. Hydrogen ions and carbonate ions
31: The process of blood clotting leads to the formation of _____ a potent mediator of inflammation.
A. Bradykinin.
B. Diapedesis
C. Exocytosis
D. Opsonization
32: Inflammatory mediators such as bradykinin and histamine cause blood vessels to _____.
A. Vasodilate
B. Specific defense
C. Innate defense
D. Cytotoxic t cell response
33: This animation illustrates the functioning of a _____ protein
A. Transport
B. Effector
C. Structural
D. Receptor
34: __________ are lymphocytes that coordinate cellular and humoral immune responses.
A. Regulatory T cells.
B. B cells.
C. T helper cells.
D. T cytotoxic cells.
35: Adjusting the ______ increases or decreases the crispness of objects in the photo.
A. Contrast
B. Sharpness
C. Brightness
D. Compression.
36: The binding of signal molecules to _____ results in the phosphorylation of tyrosines.
A. A
B. B
C. C
D. D
37: If one organ is an exaptation of another organ, then these two organs _____.
A. Are homologous
B. Are undergoing convergent evolution
C. Are found in the same species
D. Have the same function
38: __________ is the key hormone regulator of the postabsorptive state.
A. Insulin
B. Glucagon
C. Parathyroid hormone
D. Cortisol
39: A knee-jerk reflex that is unusually strong may be caused by ______.
A. Transmission of excitatory signals from the brain to the neurons that form the femoral
B. Ganglia associated with afferent nerve fibers contain cell bodies of sensory neurons.
C. Control of the adductor longus
D. Characterized by paralysis of facial muscles
40: Emotion, motivation, olfaction, behavior, and memory, in humans, are mediated by the _____.
A. Limbic system
B. Cerebrospinal fluid
C. A person is no longer aware of a heavy necklace that was put on earlier in the day
D. Radial symmetry
41: The foramen ovale and the ductus arteriosus are both examples of __________.
A. Pulmonary bypass shunts, which serve to bypass the lungs
B. Cells of the somatic mesoderm, which help to form the dermis of the skin
C. Venous shunts, which serve to bypass the liver sinusoids
D. Cells of the mesoderm that form the heart and blood vessels
42: Without surfactant, _______.
A. The surface tension of the liquid in the alveoli would be greater and the alveoli would collapse.
B. Less than the pressure in the alveoli and less than atmospheric pressure
C. Intrapleural pressure
D. Carbon dioxide increased
43: All of the following might lead to a disease caused by an opportunistic pathogen except __________.
A. Leukopenia. Nausea, lethargy, and itching are all symptoms and, by definition, would not be present in an asymptomatic individual; however, signs such as leukopenia could still be present and detectable by the appropriate tests.
B. An encounter with an infected animal. Immune suppression, changes in one's diet, and hormonal changes can all lead to an opportunistic infection sulting in disease.
C. They contain chemicals that are lethal to phagocytes.
D. Indirect contact transmission. Inanimate objects, also known as fomites, are instrumental in the spread of pathogens by indirect contact transmission.
44: In an ischemic heart, the affected cardiac muscle cells are likely to have an altered ______.
A. Number of Z disc
B. Number of desmosomes
C. Number of slow Ca+2 channels
D. Resting member potential
45: Increasing the strength of the stimulus applied to the sensory receptor increased _______.
A. The frequency of action potentials
B. Initial segment of the axon
C. Voltage-gated Na+ channels
D. Sodium-potassium pump
46: The first confirmed detections of extrasolar planets occurred in ____________.
A. The 1880's
B. The 1990's
C. The 1998's
D. The 1992's
47: ________ is a compound produced by sponges that can kill ________.
A. Penicillin; tapeworms
B. Choanostatin; cancer cells and drug-resistant strains of Streptococcus
C. Cribrostatin; cancer cells and drug-resistant strains of Streptococcus
D. Cribrostatin; tapeworms
E. Penicillin; drug-resistant strains of Streptococcus
48: A signal transduction pathway is initiated when a _____ binds to a receptor.
A. Signal molecule
B. Cyclic AMP
C. Tyrosine kinase
D. G protein
E. Calmodulin
49: Feathers either play a role, or may have played a role, in _____.
A. Is rapid speciation under conditions in which there is little competition.
B. Extensive
C. The populations will not be able to interbreed because they are different species.
D. Increased fitness of large-beaked birds, leading to natural selection
50: If the direction of earth's rotation reversed, the most predictable effect would be ________.
A. Depth of water and rate of water movement
B. The turnovers bring nutrient-rich water from the bottom of the lake up to the top of the lake.
C. Community the water of the button
D. Winds blowing from west to east along the equator
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Mastering Biology MCQs
Усвоение вопросов по биологии на русском языке
Dominar preguntas de biología en idiomas españoles
生物学の質問を日本語でマスターする
Padroneggiare le domande di biologia nelle lingue italiane
Maîtriser les questions de biologie en langues françaises
Dominando questões de biologia em línguas portuguesas
Beherrschung biologischer Fragen in deutschen Sprachen
掌握中文生物学问题
إتقان أسئلة علم الأحياء باللغات العربية
Menguasai soal-soal Biologi dalam bahasa Indonesia
Türkçe dillerinde Biyoloji sorularına hakim olmak
