What indicates the number of neutron and electrons for a neutral isotope of iridium (IR) that has a mass number of 191
114 Neurons and 77 electrons
When examining electronegativity values, which atoms will form the least polar bond with hydrogen (H)
Which element is the best electrical conductor?
A large saturated hydrocarbon will contain
More than twice as many hydrogen atoms as carbon atoms
A student is testing the materials in two different soil samples.
What assumption can be made from table data containing
Nutrient 1 2
Nitrates YES YES
Phosphates YES NO
Different soils contain different nutrients
.... are at higher taxonomic levels of organization that ......
What is considered the least useful method when conducting quantitative scientific research
Recording qualitative observation
What is needed for cellular waste recycling?
A researches wishes to test the hypothesis that soy is a superior diet compared to whole wheat for the reproductive purposes of certain beetle types. How would the researcher best test this hypothesis
Compare the eggs from 10 soy and 10 whole wheat cultures
What system includes organs between the mouth and anus
How can a punnett square help predict a genotype of the offspring if the alleles of both parents are known
Shows what genotypes are possible in the offspring
A substance with a PH of 7.0 when dissolved in water is?
What byproduct of cellular respiration is used by autotrophs in the production of glucose
A certain disease is carried on allele (a) which is recessive the normal condition (A). If a normal (AA) make mates with a female who has the disease (aa), what percentage of their offspring will carry the disease.
A line on a diagram starting at 700 insect species and goes down along the line of a temperate graph represents the correlation between insect diversity and temperature is called a
The pancreas is a component of what system
What bond is primarily responsible for base pairing in complementary strands of DNA
A cell uses what as the first line of defense against mutation during DNA replication
DNA Polymerase proofreading
After passing through the stomach, food continues in to which structure?
Suppose a 2 KG mass is travelling at 3 meters/second. What will its kinetic energy (KE) be?
Three different liquids with 3 different densities are placed together in a container. The liquids, when stirred and allowed to resettle always return to 2 at the top, 1 in the middle and, 3 at the bottom. What does this mean?
Liquid 1 has a higher density than liquid 2
What term is given to multiple forms of a gene that are produced by mutation?
During mitosis and cell division, spindle fibers are associated with which organelles?
What part of the gastrointestinal tract does the absorption of water primarily occur?
During which stage of development do individual tissue layers begin to form
What number represents the number of different cells formed upon completion of meiosis II
4 two original 2 copied
What is a property of bases
Liberates OH- in solution
During which stage of interphase is mRNA synthesized?
A harmful example of a catalytic reaction involves the breakdown of ozone by the use of ....
Phenotypes are seen due to the production of ... from the genotypic code found in the cell nucleus
Receiving a vaccination against a particular disease results in what type of immunity?
The veins of the upper part of the body are responsible for transporting blood to which area of the heart?
Superior vena cava
The spleen and thoracic duct are parts of which system?
Nucleotides are to DNA as amino acids are to
Which taxonomic rank is the most specific
For a given substance, the gas phase (compared to the liquid stage) is considered to have .... intermolecular attractions and to exist as .... temperatures
What pulls air in to the body during inspiration?
What is the chemical formula for octyne
A culture for the flour beetle Tribolium confusum was started with 10 males and 10 females in a 20 milliliter flask. Over a period of time, the beetle population increase to 940 insects, after which, the number remained constant for several days, followed by an increase in death rate. What is a reasonable hypothesis related to this experiment?
The population is controlled by density-dependent factors
What describes how inhibitors affect the reaction rate of enzymes?
They block the active sites of the substrate, causing greatly reduced activity
CH4 + O2-> CO2+ H2O what balances this formula
CH4 + 2O2-> CO2+ 2H2O
Water's ..... bonding results in a ........ ratio of hydrogen to oxygen
During which process does RNA relay on information to the ribosomes?
Where is urine stored?
In a medication study, population A is given modification, and population B is given a placebo. What describes population B?
A boy is throwing a baseball at a target. The baseball travels 15 mph during his first throw and 30 mph during his 2nd throw. What correctly compares the energy of the baseball in these two situations?
The kinetic energy of the second throw is four times that of the first throw
A researcher predicts that nursing students who have taken extensive science courses will score significantly higher on their national licensing exams, when compared to nursing students who have only taken the required science courses, This prediction follows which scientific method?
Formulating a hypothesis
Which organ produces bile that begins the breakdown of fats?