Answer:
A
Explanation:
Today, the atmosphere holds about 21 per cent oxygen. ... When the first simple organisms appeared in the oceans more than 3.5 billion years ago, the atmosphere was mostly nitrogen, hydrogen, water vapor, and carbon dioxide
What evidence could you collect to confirm that the mutation identified in Sam’s DNA causes symptoms of RP?
Answer:
By injecting a functioning copy of the gene mutated in Sam's DNA in the cells of his eyes. Then seeing any reactants damage the cells using a microscope.
Explanation:
The evidence that could you collect to confirm that the mutation identified in a patient's DNA causes symptoms of RP is a model organism that can be used to confirm the mutation.
What is Retinitis pigmentosa (RP)?Retinitis pigmentosa (RP) is a hereditary condition that results in cell loss and breakdown in the retina, which increases light sensitivity and causes tissue lines at the back of the eye.
The mutation is a disorder that is caused by the genetic modification of genes and chromosomes. This causes genetic disorders in the organism, and these defects may be lethal.
These diseases are hereditary, which mean they are transferred from parents to children and some genetic disease can be detected in the fetus of the mother.
Thus, a model organism, identified in Sam’s DNA, causes symptoms of RP.
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Which one of the following provides natural passive immunity colostrums milk powder water with sugar vaccination
Answer:colostrums
Explanation:colostrums contains antibodies, last for a period of time in the body.
The core of the immune system is made up of
red blood cells.
platelets.
white blood cells.
intact skin.
intact mucus membranes.
Answer:
red blood cells
Explanation:
white blood cells are used for fighting against diseases
significance of soil air
Answer:
The soil air is responsible for influencing the availability of many nutrients. Soil air is also by many of the microorganisms that release plant nutrients to the soil. The soil air can fill soil pores as water drains or is removed from a soil pore by evaporation or root absorption.
Explanation:
What characteristics in a human pedigree suggest a mitochondrial location for a mutation affecting the trait
Answer:
maternal inheritance
Explanation:
the differing levels of expression of the mutant phenotype in different progeny
What would happen if any of the biogeochemical cycles would break
Answer:
Excess phosphorus is polluting our environment while, ironically, mineable resources of this essential nutrient are limited. Globally, oxygen-depleted marine coastal 'dead zones' caused by nutrient-stimulated algal blooms continue to expand
Explanation:
I don’t wanna go to school I’m so tired
Answer:
then don't school is for nerds and bullys the rest kinda are not really necessary well i hope you found this helpful
3. Shows like Sesame Street are part of the public health model of service delivery.
O True
O False
4. Which model of service delivery would focus most on getting a disabled person back into the workforce by focusing on what skills they still have or can develop?
O Medical model
O Public health model
O Social service model
O Human service model
Answer:
4. True
5. Social service model
Wich of the following occurs in all species of living organisms and may lead to an increase in genetic variation?
Answer:
The answer is Mutation. (Tell me if this is not an answer choice)
1. The nose helps the body keep its balance.
a. True
b. False
Answer:
false
Explanation:
The ears help the body keep it's balance. Most issues with the balance arise from conditions affecting the inner ear.
True / False
HIV is unique because it copies the information for reproduction from RNA back into DNA.
Explanation:
True. it is a virus and that's how viruses reproduce.
HIV is a virus which is unique because it copies the information for reproduction from RNA back into DNA, the statement is true.
What is virus ?A virus is a nonliving thing which is a connecting link between living and nonliving organism, depend on living host cell for their survival.
virus contain a chain of nucleic acids (DNA or RNA) which use different parts of the cellular machinery to reproduce, and releases the replicated nucleic acid chains
A virus has a protein coat or protein envelope allows the virus to survive between hosts act as a protective covering, do not have cells and lack a cell wall .
The protein coating is called as the capsid, genetic element present and is characterized by the evolution of the virus and the host.
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list the levels of organization of that make up an organism, starting with an atom and ending with an organism
Answer:
The major levels of organization in the body, from the simplest to the most complex are: atoms, molecules, organelles, cells, tissues, organs, organ systems, and the human organism.
Explain what TWO forces cause Earth’s water to bulge?
Answer:
Gravity and inertia act in opposition on the Earth's oceans, creating tidal bulges on opposite sites of the planet. On the “near” side of the Earth (the side facing the moon), the gravitational force of the moon pulls the ocean's waters toward it, creating one bulge.
many trees in pennsylvania loose their leaves in the autumn and regrow their leaves in the spring. which graph shows the weather change that results in this pattern.
Salt water gargle can temporarily relieve a sore throat. One recipe calls for 3/4 teaspoon of salt in 1 cup of water. A second recipe calls for 1 2/3 teaspoon of salt in 2 cups of water. Which recipe will
taste saitier? Explain.
Answer:
I believe the one with 2 cups of water will be saltier
Explanation:
When you change the fractions to a common denominator, which is 12, you see the recipe with 1 cup should be half of the recipe with 2 cups. But the one with 2 cups is more than double the recipe with 1 cup.
bacteria having cluster of flagella at both poles of the cell is known as
Bacteria having cluster of flagella at both poles of the cell is known as Amphitrichous bacteria.
WHAT ARE AMPHITRICHOUS BACTERIA?Amphitrichous bacteria are types of bacteria that have flagellum on each of two opposite ends. An example of amphitrichous bacteria is Alcaligenes faecalis.
In this type of bacteria, only one flagellum functions at a time. This causes the bacterium to reverse course.
Therefore, bacteria having cluster of flagella at both poles of the cell is known as Amphitrichous bacteria.
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When an employee remembers the first manager who came and spoke to them on their first day of work, the event is most likely to be stored in the employee's:
Episodic Memory!
Episodic memory includes personal information on what happened and where.
Hope this helps!
Which codon is the code for the amino acid valine (Val)?
Answer: A. GUC
Explanation:
Looking at the codon chart, we see that on the lower left corner (where first base in codon is G) the whole section matches to amino acid valine. Therefore, GUU, GUC, GUA, and GUG are all correct answers, but since GUC is the only correct choice in the four choices given, GUC is the answer to this question.
what process is shown?
Answer:
A
Explanation:
it's cell cycle.
A cell cycle is a series of events that takes place in a cell as it grows and divides.
help :(
Which of the following is the most accurate example of supply and demand?
The consumer cost for roses drops when fewer roses are available for sale.
The price of rice increases as more of it is produced.
The consumer cost for roses drops when fewer roses are available for sale.
The large amount of unemployed farm laborers drops farm wages.
Which of the following is the most accurate example of supply and demand?
The consumer cost for roses drops when fewer roses are available for sale.Explanation:What is demand?
Demand refers to consumers' desire to purchase goods and services at given prices. Demand can mean either market demand for a specific good or aggregate demand for the total of all goods in an economy.The consumer cost for roses drops when fewer roses are available for sale.
Explanation:-
Demand means the asking of consumers for the product.If demand of any product increases among consumers the price also increases.If demand of any product decreases among consumers the price also decreases .[tex]\\ \sf\longmapsto Demand\propto Product [/tex]
Explain why the accidental and intentional introduction of new pests is likely to be an ongoing problem for future agriculture, and include possible approaches to solving the problem.
The introduction of pests in a new geographic region may have devastating consequences on crop yields. Invasive pest species often don't have natural predators or exhibit higher adaptive fitness.
Invasive species represent an important subject of concern in agriculture because they have the potential to drastically reduce crop yields.
Generally, invasive pest species don't have natural predators or exhibit higher adaptive fitness compared to well-established natural pest species.
In consequence, these species (invasive species) may cause considerable harm to crops.
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Question 3
After plotting the points on the graph, analyze the results of your experiment. Conclude how different concentrations of
acid affected the solubility of the limestone. Cite evidence from the findings to support your conclusion.
There will be more acid particles to interact with the limestone at higher concentrations hence the rate of reaction increases.
The question is incomplete but I will try to help you the much I can. If you have carried out the experiment properly, you will notice that the rate of reaction increases as the concentration of the acid increases.
This is because, if the amount of limestone is held constant and the concentration of acid is increased, there will be more acid particles to interact with the limestone at higher concentrations hence the reaction proceeds faster.
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The portion of the membrane system in eukaryotic cells that is responsible for the making lipids and breaking down toxic substances in the
Answer:
The endoplasmic reticulum
Explanation:
What is the haploid number of this species ?
Answer: 3
Explanation:
The role of DNA segment that do not code for proteins
Answer:
The non-coding regions of DNA are called introns. They are significant in evolution since they offer a great 'recipe' for recombination with genes/exons. Therefore, this offers variations among individuals on which natural selection could act upon to help a population adapt to changes in the environment. Introns also offer an additional step in gene regulation through the splicing of introns in making of mRNA.
Plants break down the food, prepared during photosynthesis, with the help of _____. (a) Oxygen (b) Carbon dioxide (c) Hydrogen (d) Nitrogen
Answer: (a) Oxygen
Explanation: Oxygen reacts with the plants food releasing energy.
How are human beings and chimpanzees phylogenetically related?
A.
They share a common ancestor.
B.
They share the ability to use tools.
C.
They both belong to the animal kingdom.
Answer:
The correct answer is A.
Explanation:
The definition of phylogenetically is "in a way that relates to the evolutionary development and diversification of a species or group of organisms." This means any phylogenetic relationship has to be sharing and answer.
Newly formed viral entities inside the living cells are called ……………………..
Answer:
answer
cytopathic viruses.
In 1860, a scientist named Gregor Mendel used pea plants to determine the dominance of certain traits. In one of his experiments, he looked at the inheritance of pod color. Construct a Punnett square for a pea plant with YY phenotype for a yellow pod cross-pollinated with a pea plant with yy phenotype for a green pod.
This graph shows the harbor seal population in the gulf of Maine for a twenty year period. A population of seals with unlimited
resources will continue to grow exponentially as shown in the graph above. What are some density-dependent limiting factors that
would prevent continued exponential growth? Choose ALL that apply.
es )
Answer:
Explanation:
This graph shows the harbor seal population in the gulf of Maine for a twenty year period. A population of seals with unlimited
resources will continue to grow exponentially as shown in the graph above. What are some density-dependent limiting factors that
would prevent continued exponential growth? Choose ALL that apply.
es )