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Biology
Biology
Middle School
If short is recessive to tall, provide the symbol representation and the phenotype for each of the genotype for this trait.
Biology
Middle School
Gel electrophoresis is often used in forensics. Look at the gel on the right. From the evidence DNA, which individual matches the DNA evidence left at the crime scene?
Biology
College
The nucleus of "Lead-208", 208 82 Pb, has 82 protons within a sphere of radius 6.3410-15 m. Each electric charge has a value of 1.60218 10^-19 C. The Coulomb constant is 8.98755 109 N m^2/C^2. Calculate the electric field at the surface of the nucleus. Answer in units of N/C.
Biology
Middle School
wReviewActiveThe African snail is a large snail that eats at least 500 different types of plants and is one of the top 100 invasive species inworld. What is the most likely way the snail was introduced into Florida?A small animal was carrying one on its fur.A boy brought a pair home as pets.Two swam across the ocean.One stuck to an airplane's wing.
Biology
High School
A sample of adults with generalized anxiety disorder are participating in a Stroop task in which threat-related words are presented in different colors on a computer screen. As compared with adults without an anxiety disorder, the sample should take __________.
Biology
Middle School
How are cells like littleRooms and how are they different?
Biology
Middle School
3. Describe the functions of each of the eleven organ systems.
Biology
Middle School
Where is genetic information stored within cells? Genetic information is stored in the Question 1 options: nucleus as DNA molecules mitochondria as ATP. nucleus as ATP. mitochondria as DNA.
Biology
College
Below is a hypothesis about why male white-crowned sparrows sing dialects. Is this hypothesis a genetic-developmental explanation, a physiological-psychological explanation, an adaptive value explanation, or one relating to evolutionary history? The ability to sing the local dialect enables a bird to form bonds with others in the area so that they can adjust their total reproductive output, reducing the risk of local overpopulation.
Biology
Middle School
Question 5 (4 points) Match the description on the right with the force on the left.Question 5 options:A non-contact force that is generated from moving charges.A force that requires physical contact between objects.A non-contact force that is generated between charged objects.A non-contact force that exists between objects with mass.1.Magnetic2.Electrical3.Gravitational4.Contact
Biology
High School
Based on radiometric dating, the oldest rocks scientists have found on Earth are 4.6 billion years old, but not ALL rocks are that old. Why might some rocks be 4.6 billion years old, and other rocks are only 2 billion years old, while yet others are only a few thousands years old?
Biology
High School
There are a number of lipids that are found in foods and contribute to various functions in the body. Triglycerides are the most common lipid found in food and in the body; they consist of a ____________ backbone attached to three fatty acids. Fatty acids are classified based on the degree to which the carbon chain is saturated with ________ A fatty acid is ____________ if it contains no carbon-carbon double bonds, ____________ if it containstwo or more carbon-carbon double bonds, and ____________ if it has only one carbon-carbon double bond. The unsaturated fatty acids can exist in one of two structural forms: the ____________ form occurs when hydrogens on both carbons forming the double bond lie on opposite sides of that bond. When hydrogens on an unsaturated fatty acid lie on the same side of the carbon-carbon double bond, a ____________ formation exists.
Biology
Middle School
Which of the following best describes the total amount of carbon in the system made up of the Earth and its atmosphere?
Biology
Middle School
Which of the following variables are constants in the Cell Homeostasis Virtual Lab? The percent concentrations of sugar solution in beakers B-E The type of solute (dissolved solid) The percent concentration of sugar solution in dialysis tubes B-E The mass of the sugar The amount of water in the beakers The amount of water in the dialysis tubes The amount of time the dialysis tubes are exposed to the sugar solutions in the beakers
Biology
High School
An EMT is confronted by an armed gunman who is threatening to kill the EMT and his partner. An elevation in the EMT's heart rate and blood occurs in which stage of the body's response to stress?
Biology
Middle School
Gabriela recently moved to a city in Florida that is prone to severe weather. Help Gabriela prepare for impending storms by identifying theconditions that lead to each type of severe weather event.
Biology
College
In the mouse, gene A allows pigmentation to be deposited in the individual coat hairs while its allele a prevents such deposition of pigment, resulting in an albino. Gene B gives agouti (wild-type fur) while its allele b gives black fur.The cross between a doubly heterozygous agouti mouse mated with a doubly homozygous recessive white mouse is:AaBb X aabb.1. What would be the expected phenotypic ratio in the progeny?
Biology
Middle School
The scarcity of food affect the size of a finch population
Biology
High School
The central principle of therapeutic massage is that the body's soft tissues will function optimally when the circulatory and lymphatic systems are unimpeded. true or false
Biology
Middle School
13In a kidney machine, protein molecules are not lost from the bloodHow is loss of protein prevented?ABCDMembranes prevent protein molecules diffusing out of the blood.Proteins are actively transported back into the blood.Proteins do not enter the kidney machine.The dialysis fluid contains protein, so there is no diffusion gradient.
Biology
High School
There is a mutation in the operator of the lac operon in a cell such that the lac repressor always stays bound to the operator. If lactose is added to the cell, what will happen?
Biology
Middle School
The sedimentary layers of Earth increase in temperature with depth. The massive weight of these layers also causes an increase in pressure which increases the temperature even more. This cycle of heat and pressure transforming the existing rock is called the rock cycle, a system of constantly changing rock formation and melting that links sedimentary, igneous, and metamorphic rock. The hotter the temperature and pressure the greater the metamorphic changes. Depending on the conditions under which rock is changed, the rock gradient forms new metamorphic rock into high-grade or low-grade metamorphic rock
Biology
High School
During the last decade, the U.S. Fish and Wildlife Service has worked to reestablish the critically endangered California condor in its last stronghold, the mountains of southern California. Recently, the service has also tried to establish a second population in the Grand Canyon region of Arizona. Why would the Fish and Wildlife Service consider it a high priority to establish two populations that are geographically distant from each other Multiple condor populations reduce inbreeding. Multiple condor populations provide more opportunities for people to view the endangered species, which may cause more people to be concerned with its fate. Multiple condor populations reduce genetic drift within each population. Multiple condor populations reduce the risk of extinction due to localized catastrophes
Biology
High School
The energy released is trapped in the form of ATP (Links to an external site.) for use by all the energy-consuming activities of the cell. The process occurs in two phases: glycolysis, the breakdown of glucose to pyruvic acid the complete oxidation of pyruvic acidto carbon dioxide and water. Fermation is the chemical breakdown of a substance by bacteria, yeasts, or other microorganisms, typically involving effervescence and the giving off of heat. the process of fermentation involved in the making of beer, wine, and liquor, in which sugars are converted to ethyl alcohol.
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