Biological Science
Showing 76-150 of 155 answers
The losses of ozone over Arctic are significantly lower than that over Antarctica because
- Arctic stratosphere warms slower in the spring
- Concentration of chlorine in the atmosphere over Arctic is less than over Antarctic Correct
- Freezing of NO2 and CH4 are slower over Arctic than over Antarctic
- Polar vortex over Arctic is not as tight as over Antarctic
The main source of energy in mitochondrial respiration:
- ADP
- NADPH
- ATP Correct
- Thymine
The majority of carbon dioxide in the blood is transported by ________.
- binding to hemoglobin
- conversion to bicarbonate
- dissolution in the blood Correct
- binding to plasma proteins
The plasma membrane of animal cells are composed mainly of ________.
- phospholipids Correct
- hydrocarbon chains
- steroids
- wax
The scientific method generally follows a deductive type of reasoning. A hypothesis is generated from observations. The series of steps needed to prove a hypothesis are called:
- conclusions
- experiments Correct
- theory
- inductions
The scientific method generally follows a line of observations, experiments and conclusions. Which of the following closely represents the steps in scientific method?
- hypothesis - observation - question - results - prediction - experiment
- observation - question - hypothesis - prediction - experiment - results Correct
- experiment - observation - results - hypothesis - question - prediction
- question - prediction - results - experiment - hypothesis - observations
These are the careers that can be pursued in nutrition:
- Clinical Dietetics
- Education and research
- all of the answers correct Correct
- Consultants
These are the things to do to increase job security, except:
- Work in large companies with robust pipelines
- Stay flexible in career
- Stay at the cutting edge
- All of the answer is correct Correct
This protein helps oxygen bind to blood and be transported to various parts of the body:
- globo-H
- hemoglobin Correct
- bicarbonate ions
- plasma
This type of white blood cells clean up infections in the blood:
- extracellular fluid
- plasma
- no correct answer
- macrophages Correct
True or False: Inflammation always indicates the presence of an infection.
- True Correct
- False
Urea accumulates in what organ before excretion from the body?
- Kidneys Correct
- Skin
- Lungs
- Liver
Vaccines_______.
- Are similar to viroids
- Stimulate an immune response Correct
- Kill viruses
- Are only needed once
Viruses_______.
- vary in shape Correct
- do not maintain any shape
- all have a round shape
- cannot have a long shape
Water moves via osmosis _________.
- from an area with a high concentration of other solutes to a lower one
- throughout the cytoplasm
- from an area with a low concentration of water to one of higher concentration
- from an area with a high concentration of water to one of lower concentration Correct
What advantages does a command line interface have over a graphics user interface?
- It identifies cases of homology with 100% accuracy, all the time, every time
- One can write a program to run on the command line that does your work for you Correct
- One can point their way through programming
- It offers less control and no one wants control
What are the anticipated future trends in data science?
- The huge rewards awaiting the taming of the biological world, including longer lives and the cure of diseases
- Innovation of modes for scholarly interactions and professional growth
- Increasing importance of connections for mathematical science research
- All of these Correct
What do circadian rhythms govern?
- Cicadas
- Circular breathing
- Seasons
- Sleep-wake cycles Correct
What is a biomarker?
- a marker that is genetically inherited
- a molecule in the genome or proteome
- the color coding of different genes
- a protein that is uniquely produced in a diseased state Correct
What is a cline?
- gradual geographic variation across an ecological gradient Correct
- the slope of a mountain where a population lives
- the number of individuals in the population
- the degree to which a mutation helps an individual survive
What is assortative mating?
- When individuals mate with those who are dissimilar to themselves
- When individuals mate with those who are least fit in the population
- When individuals mate with those who are the most fit in the population
- When individuals mate with those who are similar to themselves Correct
What is meant by 'organ culture' ?
- Cultivation of organs in a laboratory through the synthesis of tissues Correct
- Maintenance alive of a whole organ, after removal from the organism by partial immersion in a nutrient fluid
- Introduction of a new organ in an animal body with a view to create genetic mutation in the progenies of that animal
- The aspects of culture in community which are mainly dedicated by the need of a specified organ of the human body
What is the difference between micro and macroevolution?
- Microevolution describes the evolution of organisms over their lifetimes, while macroevolution describes the evolution of organisms over multiple generations
- Microevolution describes the evolution of microscopic entities, such as molecules and proteins, while macroevolution describes the evolution of whole organisms
- Microevolution describes the evolution of small organisms, such as insects, while macroevolution describes the evolution of large organisms, like people and elephants
- Microevolution describes the evolution of organisms in populations, while macroevolution describes the evolution of species over long periods of time Correct
What is the leading cause of cancer death worldwide?
- Lung cancer Correct
- Breast cancer
- Liver cancer
- Stomach cancer
- Colorectal cancer
What is the main purpose of producing ATP molecules?
- providing energy to coupled reactions Correct
- harnessed as heat energy by the cell to perform work
- primarily stored between the alpha and beta phosphates
- equal to -57 kcal/mol
What is the primary function of carbohydrates attached to the exterior of cell membranes?
- channels through membrane
- flexibility of the membrane
- strengthening the membrane Correct
- identification of the cell
What is used to determine phylogeny?
- organisms on earth
- DNA Correct
- evolutionary history
- mutations
What was lacking in Darwin's theory of natural selection?
- Тhе аbѕеnсе of bіoсhеmісаl tесhnіquеѕ to dеtеrmіnе thе gеnеtіс ѕіmіlаrіtіеѕ bеtwееn ѕресіеѕ Correct
When closely related individuals mate with each other, or inbreed, the offspring are often not as fit as the offspring of two unrelated individuals. Why?
- Inbreeding causes normally silent alleles to be expressed Correct
- Close relatives are genetically incompatible
- The DNA of close relatives reacts negatively in the offspring
- Inbreeding can bring together rare, deleterious mutations that lead to harmful phenotypes
When searching a database with a query sequence, the P-value is proportional to the size of the databank and can be larger than 1.
- True
- False Correct
Where in a phylogenetic tree would you expect to find the organism that had evolved most recently?
- at the nodes Correct
- at the branch tips
- within the branches
- at the base
Which branch of science is related to biology?
- chemistry
- physics
- ecology
- All of the answers correct Correct
Which cells fight foreign organisms in the body?
- White blood cells Correct
- Sleeper cells
- Skin cells
- Red blood cells
Which components of speciation would be least likely to be a part of punctuated equilibrium?
- Ongoing gene flow among all individuals Correct
- A division of populations
- A large number of mutations taking place at once
- A change in environmental conditions
Which description is an example of a phenotype?
- A mutation occurred to a flower
- Most cheetahs live solitary lives
- Both a certain duck has a blue beak and most cheetahs live solitary lives Correct
- A certain duck has a blue beak
Which information was most important to the development of genetic engineering techniques?
- The discovery of lethal genes
- The observation of non-dominant alleles
- The formulation of Punnett squares
- The structure of a DNA molecule Correct
Which is a potential career path for a nutritionist?
- Pediatrics nutrition consultant
- Dietician
- Food management specialist
- All of the answer is correct Correct
Which is not a function of body fat?
- To provide insulation
- To convert energy from food into heat Correct
- To cushion falls
- To store energy
Which is not a way of life of the ancient man?
- City-dwelling Correct
- Hunter and gatherer
- Settlements along the bodies of water
- Nomadic lifestyle
Which of the following are involved in posttranscriptional control?
- control of RNA shuttling
- control of RNA splicing
- all of the answers correct Correct
- control of RNA stability
Which of the following are the benefits of genomics research?
- Help discover novel cure for diseases
- Help discover methods to decrease transplant rejection
- Help disciver mutations related to childhood diseases
- All the answers correct Correct
Which of the following does the enzyme primase synthesize?
- Phosphodiester linkage
- Okazaki fragments Correct
- RNA primer
- DNA primer
Which of the following hormones control levels of sugar in our blood?
- insulin Correct
- serotonin
- epinephrine
- thyroxine
Which of the following industries DOES NOT need scientists and business professionals for industrial and research expansion?
- Cosmetics research and development
- Pharmaceutical sciences
- Automotive industries
- None of the answer is correct Correct
Which of the following is a water-soluble vitamin?
- vitamin C Correct
- vitamin E
- vitamin K
- vitamin A
Which of the following is most likely to be found in a Tropical rainforest?
- a canopy of perineal trees Correct
- wide, flat leaves that can float
- needle-like leaves
- spines instead of leaves
Which of the following is not a feature common to most animals?
- development into a fixed body plan
- asexual reproduction Correct
- heterotrophic nutrient sourcing
- specialized tissues
Which of the following is thought to be the most closely related to the common animal ancestor?
- fungal cells
- protist cells
- plant cells
- bacterial cells Correct
Which of the following is true?
- All of the answers correct Correct
- Science could help make informed choices about medical treatment
- We can now use genetic engineering to combat diseases
- Sequencing an individual person's genome is currently possible
Which of the following is useful for current trends in agricultural practices:
- transgenic technology
- recombinant DNA technology
- biotechnology
- all of the answers correct Correct
Which of the following is/are true of epigenetic changes?
- Move histones to open or close a chromosomal region
- All of the choices Correct
- Are temporary
- Allow DNA to be transcribed
Which of the following molecules is likely to have the most potential energy?
- ADP
- ATP
- sucrose
- glucose Correct
Which of the following organism is a cnidarian diploblast?
- insect
- sea star
- shrimp
- jellyfish Correct
Which of the following organs is the primary organ for taste
- Eyes
- Lips
- Saliva
- Tongue Correct
Which of the following pairs are homologs?
- arms and wings Correct
- feet and mouth
- eyes and ears
- No correct answer
Which of the following part of a flower are disseminated by birds?
- root
- flower
- leaf
- seed Correct
Which of the following scientific fields are important in agriculture?
- Biotechnology
- Botany
- All of the answers are correct Correct
- Veterinary medicine
Which of the following statements is false?
- Communities exist within ecosystems which exist in the biosphere
- Communities exist within populations which exist within ecosystems Correct
- Organelles exist within cells which exist within tissues
- Tissues exist within organs which exist within organ systems
Which of the following statements is true?
- Acids donate hydroxide ions : bases donate hydrogen ions
- Acids and bases will neutralize each other Correct
- Acids, but not bases, can change the pH of a solution
- Acids and bases cannot mix together
Which of the following technologies produce "big data"?
- Structural Biology and Genome sequencing Correct
- Genome sequencing
- Structural Biology
- none of the answe is correct
Which of the following technologies produce big data ?
- Structural Biology and Genome sequencing Correct
Which of the following will NOT facilitate the transfer of oxygen to tissues?
- increased carbon dioxide
- decreased body temperature Correct
- increased exercise
- decreased pH of the blood
Which of these organisms would most likely be found at the bottom of a biomass pyramid?
- sand sharks
- green algae Correct
- giant squids
- sea cucumbers
Which one is a primary factor of evolution?
- climate
- all of the answers correct Correct
- availability of food
- presence of predators
Which organism is not a eukaryote?
- Earthworm
- Eagle
- Ecoli bacteria Correct
- Eel
Which plant structure upholds all the parts so that water and sunlight can reach the leaves?
- fruit
- pollen
- stem Correct
- flower
Which scientific concept did Charles Darwin and Alfred Wallace independently discover?
- sexual reproduction
- natural selection Correct
- overbreeding
- mutation
Which situation would most likely lead to allopatric speciation?
- A mutation causes a new trait to develop
- An injury causes an organism to seek out a new food source
- Flood causes the formation of a new lake Correct
- A storm causes several large trees to fall down
Which statement is false?
- Science is not bounded by country borders
- Humans are not needed in science-related careers Correct
- Growth of careers in science outside of academia is enticing in its own right
- Science and technology moves our world forward
Which statement is true?
- growth of careers in science outside of academia is enticing in its own right Correct
- early interest in law or government may not translate to a career in patent law
- agriculture and food production is not a thriving global industry
- science-oriented students are all alike
Which term is used to describe the continued divergence of species based on the low fitness of hybrid offspring?
- Reinforcement Correct
- Stability
- Fusion
- Punctuated equilibrium
Which term mark a static period in an ecosystem?
- stability
- punctuated equilibrium Correct
- reinforcement
- fusion
Which tropical fruit crop has been successfully engineered to be protected against a lethal virus?
- Mango
- Passion fruit
- Papaya Correct
- Lychee
Which type of bond represents a weak chemical bond?
- hydrogen bond
- atomic bond
- nonpolar covalent bond Correct
- covalent bond
Which type of selection results in greater genetic variance in a population?
- Positive frequency-dependent selection
- Stabilizing selection
- Diversifying selection Correct
- Directional selection
This course is taught by the mentor:
Bachelor of Science in Secondary Education Major in Biological Science.
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