Answer:
80 chromosomes, 40 from each parent
Explanation:
I took the test.
Why a lunar eclipse does not occur for every full moon during the year; explain please
In which city will the sun set?
where a river flows from an area of harder rock to an area of softer rock, the softer rock may weary away, forming a drop called a(n)
The correct answer is:
b. meanders.
Explanation:
A meander, in overall, is a curve in a sinuous stream or river. Meander forms when leaving water in a stream disintegrates the outer banks and widens its valley and the central part of the river has less power and hastens silt. It is produced by a stream or river turning from side to side as it runs across its floodplain or changes its channel within a valley. A meander is created by a stream or river as it consumes the grounds comprising an outer, concave bank (cut bank) and deposits this and combined sediment downstream on an inner, convex bank which is typically a point bar.
Southern Italy is very close to the border of two tectonic plates. Which of these facts is most directly related to the closeness of the plate boundary? A. Many people like to vacation in Italy.
B. The climate in Italy is warm and temperate.
C. Italy has experienced many earthquakes.
D. Italy has many miles of coastline.
The correct answer is option C, Italy has experienced many earthquakes.
According to the theory of plate tectonics, Earth is an active planet. Its surface comprises various individual plates, which interact and move, continuously modifying and reshaping the outer layer of the Earth. Volcanoes and earthquakes both are the outcomes of the movement of tectonic plates.
Earthquakes take place on faults, strike-slip earthquakes take place on strike-slip faults, usual earthquakes take place on normal faults, and thrust earthquakes take place on reverse or thrust faults. When an earthquake takes place on one of these faults, the rock on one end of the fault slips in relation to the other.
How does DNA in offspring produced by asexual reproduction compare to DNA in offspring produced by sexual reproduction
Which good, once consumed by an individual doesn’t, reduce the ability of another individual to consume it?
Answer:
Public good
Explanation:
Public goods are those that belong to legal entities governed by Public Law, namely, the Federal Government, the Federal District, Municipalities, Municipalities and Public Foundations. Common goods are goods held by the taxes paid to the population and are therefore available to all citizens unlimitedly, ie when an individual consumes a public good, it does not reduce the ability of another individual to use it either.
Public goods are goods that are intended for general use by the community (such as streets and roads), are goods that are intended for the performance of administrative services and public services in general (such as a building where it is installed a public hospital or a public school) and are those which, although constituting public property, do not have a specific public destination or specific administrative purpose (eg, public buildings that are disabled).
In the diastole phase of the cardiac cycle what is the correct direction of the flow of blood
Out of the heart and to the arteries.
After several miles of running and sprinting in intervals, the runner’s muscles ache and feel fatigued. Which is the best explanation for what has occurred?
examine the diagram below, explain the path a newly formed polypeptide leaving a ribosome may take as it is modified or packaged before use within the cell or outside the cell: please help me.
After translation of the polypeptide in the ribosome, the polypeptide enters the cisternae of the rough endoplasmic reticulum. Here, the folding of the polypeptide begins with the aid of chaperons proteins. At the end of the RER, vesicles with the completely folded protein bud off and enters the Golgi apparatus where the proteins are transported to its destination.
A deletion of one base in the original segment of DNA is called a frameshift nutation what will happen to the newly synthesized protein as a result
The entire gene sequence after the mutation will be misread if a mutation alters this regular reading frame. This may lead to the incorrect amino acids being added to the protein or the development of a codon that prevents the protein from getting longer.
What frameshift mutation, impact synthesized protein?A point mutation is more likely to have a higher effect on protein synthesis than a frameshift mutation since it has the potential to cause premature termination or change an RNA processing site (e.g., delete splice sites, cap sites, polyadenylation sites.
Contiguous triplets make up the amino acid sequence of a protein due to the triplet structure of codons.
A frameshift mutation results in completely distinct proteins in terms of their chemical makeup, and the more protein modifications a mutation can produce, the closer to the 5′ end of the coding sequence it occurs.
Therefore, In essence, the newly created protein will either not be able to function correctly or it will serve an entirely other role.
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A salad including lettuce, tomatoes, and onions would be classified as a _________. A) compound B) element C) mixture D) solution
Answer: C) mixture
Explanation:
A mixture can be define as a combination of two or more substances in which the identity of each substances is retained. In a salad lettuce, tomatoes and onions are separate entities which are combined to form a mixture that is salad.
Answer: Mixture
Explanation:
A salad can be defined as plate full of different kinds of vegetables and fruits which are edible.
The plates contains tomatoes which are different in chemical composition, lettuce which is also different in chemical composition and onions which are all mixed together.
Elements having different chemical composition when combined together is known as a mixture.
If abo blood typing is not accepted in court why is it still a useful tool
Briefly explain the steps in the process of removing the human gene and inserting it into plasmid DNA
Answer:
Plasmids are extracted from the bacteria
The plasmids are spliced at specific regions using restriction enzymes.
The cut plasmids are incubated with the novel gene and DNA ligase
Plasmids that will have incorporated the new gene are transformed back into the bacteria
Explanation:
just took the exam and got 50/50
A geographic information system (GIS) helps scientists visualize, analyze, and interpret data about locations on Earth. Which statement describes how GIS mapping can help in planning for floods? A) They can help identify weak infrastructure, like roads and bridges, that would need repair before a flood. Eliminate B) They can help seismologists understand how floodwater can absorb into the ground and cause plates to shift. C) They can help meteorologists understand the air temperatures and cloud formations before and after a flood. D) They can help search for lost pets that were separated from their families during floods and other sever weather.
People with type o blood are universal donors but can only receive blood form other type o donors
Answer:
O donors can donate to other type
Explanation: the reason is that O type blood can donate to type A, B, AB and O is Compatible to other type of blood - but Kidney transplants need the same type of blood.
Type O individuals are universal donors and can donate to any blood type due to the absence of A and B antigens on their RBCs, but they can only receive type O blood. Type AB individuals can receive blood from any ABO type, making them universal recipients. The Rh factor also plays a critical role in the compatibility of blood transfusions.
Explanation:The compatibility of blood types between donors and recipients is crucial for safe blood transfusions. People with type O blood are often referred to as universal donors because their red blood cells (RBCs) do not have A or B antigens, making their blood compatible with all other blood types in emergencies. Nonetheless, they can only receive blood from other type O donors due to the presence of both anti-A and anti-B antibodies in their plasma. Conversely, individuals with type AB blood are called universal recipients; they can receive blood from any ABO blood type since they do not have anti-A or anti-B antibodies.
The Rh factor is also an important consideration in blood donations. For instance, a person with type O negative blood is considered a universal donor beyond the ABO blood group system, as they can donate to any blood type regardless of the recipient's Rh factor. The discovery of ABO blood groups by Karl Landsteiner allows for safe blood transfusion practices, ensuring blood compatibility and avoiding transfusion reactions.
Name at least two ways that fungi can be beneficial for us.
Earth's Oceans are impacted by climate changes, pollution, and overfishing. Which is not a result of human activity?
A) destruction of food webs
B) destruction of coral reefs
C) degradation of tidal areas
D) increase population of all species
Increase population of all species is not a result of human activity.
Impact of human activtiesWe know that human activities decreases the population of many species because human activities causes destruction of habitat and pollution in the environment.
So we can conclude that increase population of all species is not a result of human activity.
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which best describes how temperature humidity and pressure vary within an air mass
Answer:
B
Explanation:
K12 test part 1 unit test
Moles are rodents very similar to mice. They typically live underground, spending most of their lives below the earth's surface. Mice, on the other hand, may dig burrows to nest and sleep in, but they spend much of their time above ground. Their nests can be made of cloth, hair, and hay. Because moles live underground, they have developed differently than mice
Final answer:
Rats belong to the group known as rodents, distinguished by their distinctive pair of continuously growing incisors used for gnawing.
Explanation:
To what group do rats belong? Rats, along with mice, beavers, and squirrels, are part of a group known as rodents. Rodents are characterized by their gnawing behavior, which is facilitated by their unique dental structure. They have a single pair of continuously growing incisors in both the upper and lower jaws that must be kept short through gnawing. This differentiates them from other mammalian groups, such as lagomorphs (including rabbits and hares), carnivores (such as cats, dogs, and bears), and insectivores (such as moles and shrews).
The biological classification of rats is important as it helps in understanding their behavior, evolutionary history, and their role in ecosystems. Additionally, recognizing the differences between various animal groups, such as rodents and insectivores, is essential for scientific studies related to embryology, conservation, and pest control.
Give TWO advantages that cells gain by storing energy in the form of ATP.
Final answer:
Cells store energy in ATP to safely manage energy without increasing cell temperatures and to provide consistent amounts of energy for cellular processes, ensuring efficient cellular growth and function.
Explanation:
Cells gain two main advantages by storing energy in the form of adenosine triphosphate (ATP). First, ATP allows cells to store energy safely and efficiently, preventing the detrimental increase in temperatures that would occur if energy were stored as free energy. This is crucial because excess heat can denature enzymes and destroy the cell's structural integrity. Second, ATP serves as a uniform energy currency for the cell, releasing consistent amounts of energy upon hydrolysis of its high-energy phosphate bonds. This consistency is vital for the myriad of biochemical processes required for normal cellular growth and function, as it ensures that energy is distributed as needed without destabilizing the cell's environment.
Mario performed an experiment to determine if photosynthesis was affected by the amount of light that a plant received. The data from his experiment are shown in the table below.
Amount of light
(hours)
Number of plants
Average volume of oxygen produced (mL)
1
4
0.50
6
4
2.0
10
4
5.0
What could he have done to increase the validity of his data?
Answer
To increase the validity of the data introduce a 0 hour control
Explanation
There are three ways that can be done to improve the validity of data in an experiment. They are; changing only one independent variable at a time, measuring dependent variable accurate and focusing on control. The control in this case will be the zero hour control which is a key for producing sound data.
Answer:
Add a 0 hours control
Explanation: This is correct on edgen
In a population of grasshoppers, the color green (G) is completely dominant over the color brown (g). If 23% of the population is brown, calculate the percentage of the population that is expected to be heterozygous (Gg).
50 percent
47 percent
77 percent
35 percent
In a population of grasshoppers, the color green (G) is completely dominant over the color brown (g). If 23% of the population is brown, calculate the percentage of the population that is expected to be heterozygous (Gg).
50 percent
If 23% of the grasshopper's population is brown, then the percentage of the population that is expected to be heterozygous (Gg) is found to be 50%. Thus, the correct option for this question is A.
What is Population?A population may be defined as a group of individuals belonging to the same species living in the same area at a definite time. The size, density, birth rate, death rate, and abundance, are some of the characteristics of the population. These characteristics of the population are known as demographic factors.
Now, according to the question,
The percentage of brown individuals (gg)= 23% = 0.23
Then, the frequency of the g allele = √.23 = 0.47.
According to Hardy-Weinberg genetic equilibrium, P+q =1
P + 0.47 = 1 i.e. P = 1 - 0.47 = 0.53.
Now, [tex](P +q)^2 = P^2+2Pq+q^2[/tex] = 1
Now, we have to calculate the number of heterozygotes = 2Pq
= 2 × 0.53 × 0.47 = 0.4982 ≅ 0.5 i.e. 50%
Therefore, if 23% of the grasshopper's population is brown, then the percentage of the population that is expected to be heterozygous (Gg) is found to be 50%. Thus, the correct option for this question is A.
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if a climate changed a ecosystem, there would be a change in the kinds of and. that could live in that ecosystem
What is the main difference between the central nervous system (CNS) and the peripheral nervous system (PNS)?
Answer:
CNS includes the brain and spinal cord which analyze sensory inputs, whereas PNS consists of neurons and nervous tissues that carry the information.
Explanation:
The nervous system has two distinct main parts - the peripheral nervous system (PNS) and the central nervous system (CNS).
CNS contains the spinal cord and the brain serves the nervous system's command center. the spinal cord and the brain analyze sensory inputs what it exactly means and quickly orders the body parts that time to move faster.
PNS consists of the nerves, which leave the brain and the spinal cord and travel to evident regions of the body. The main job of PNS is to send information collected by the sensory receptors to the CNS.
Which connects neurons and what chemicals help neurons communicate
Which of the following is necessary for glycolysis to begin? Water, ATP, Carbon dioxide, none of the above.
Glycolysis, a metabolic process requiring ATP, begins with the investment of two ATP molecules to break down a glucose molecule and ultimately creates a net gain of two ATP molecules.
Explanation:Among the options provided in the question, ATP (Adenosine TriPhosphate) is necessary for glycolysis to begin. Glycolysis is the metabolic process in which glucose is broken down to produce energy. Glycolysis begins with the investment of two ATP molecules. The process starts when a glucose molecule is phosphorylated by an ATP molecule, which then turns into ADP (Adenosine DiPhosphate). As the process continues, it produces a total of four ATP molecules, yielding a net gain of two ATPs.
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How is a nucleosome related to a chromosome?
Answer:
The nucleosomes are structal building blocks of the packing of dna within a chromosome.
which structure is part of the cell's skeleton
Which is one of the most important differences between prokaryotes and eukaryotes?The cytoplasm in eukaryotes does not contain any organelles but that of prokaryotes does.Eukaryotes are much smaller than prokaryotes.Prokaryotes do not have a well–defined nucleus, but eukaryotes do.
How do magma and lava contribute to the formation of igneous rock?