Grouping of objects help the shopkeeper, justify the statement.
The ancestors of elephants inhabited every continent except Antarctica and Australia. But the Asian and African elephants are the only ones to survive. Why?
Options:
A) Dinosaurs killed all other elephant species.
B) Asian and African elephants killed off other species of elephants.
C) Asian and African elephants adapted well to their environments.
Asian and African elephants adapted well to their environments. Thus, the correct option is C.
Environment of Antarctica is not suitable for elephants why?
The world's coldest location is Antarctica. Additionally, it is the windiest and driest. Almost the entire year, the continent is covered in snow. Due to the extremely harsh temperatures and lack of healthy soil, Antarctica is therefore unsuitable for raising elephants and cultivating crops. Elephants eat grass, while the entire continent of Antarctica is covered in snow. In this database, there are currently 25 (8,17) living elephants located in Australia.
Although they can be found in a variety of environments, including deserts, swamps, and highlands in tropical and subtropical areas of Africa and Asia, they are most frequently found in savannas, grasslands, and woodlands.
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true or false? the leukocytes of the innate immune system are b cells, macrophages, and neutrophils.
The statement that leukocytes of the innate immune system are b cells, macrophages, and neutrophils is TRUE
What are the leukocytes of the innate immune system?The leukocytes of the innate immune system are mainly phagocytes, or phagocytic cells meaning “eating cell”, which describes what role phagocytes play in the immune response.
These phagocytes circulate the body, sort for potential threats such as bacteria and viruses, to engulf and destroy them.
Phagocytic cells of the innate immune system include the mast cells, B- cells, neutrophils and macrophages.
Therefore, the leukocytes of the innate immune system are b cells, macrophages, and neutrophils is TRUE
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Which describes these molecules correctly
The correct description of the given molecule is C. Fatty Acid.
Why is this molecule a fatty acid?A typical fatty acid has a straight chain of carbon atoms. These atoms are then bonded with hydrogen atoms.
At the end of this line, there will be a -COOH bond and at the beginning, there is an H bond. This is what is depicted in the diagram so it must be a fatty acid molecule.
Options for this question include:
A. ribose
B. glucose
C. fatty acid
D. sucrose
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Mr. jones science class is comparing three samples. Mr Jones divided his class into four groups. Each group was given one of each of the samples to measure the mass. What would be the best explanation why group 3's measurements were so different from the rest of the groups?
Answer:
C
Explanation:
i am god
When there are a lot of molecules in one place it is considered an area of:
When there are a lot of molecules in one place it is considered an area of high concentration.
What is an area of high concentration?The degree of concentration of an area is defined in terms of the amount of solute molecules in that particular area.
A concentration can either be high, low or even. A high concentration is that which has more solute molecules while a low concentration is that which has less solute molecules.
Therefore, it can be said that when there are a lot of molecules in one place it is considered an area of high concentration.
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When must personnel receive training to perform animal procedures?
The personnel must receive training to perform animal procedures before any procedures are performed on the animal.
What is animal care during experimentation?The animals used for research and experiments should be taken care of in. such a way that they can be replaced, reduced and refined.
According to the animal guide policy, any scientist that would use an animal for a research work would have to undergo a training before performing any procedures on the animal.
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A DNA segment in a somatic cell undergoes the mutation shown;
ATTACC à ACTTACC
This represents a
______Mutation
Answer:
This represents a frameshift mutation.
Explanation:
The difference between the two sequences is that there is an extra base (C) in the second sequence. A frameshift mutation occurs when there is an insertion or deletion of a nitrogenous base into a DNA sequence.
Suppose that a person takes a fall while hiking and develops tetanus when the pathogen enters through an open wound in their arm. They do not spread the tetanus infection to anyone else. The tetanus infection is considered to be ______.
The tetanus infection is considered to be a Droplet infection.
What is Tetanus?
Tetanus is a neurological disease which is characterized by the occurrence of spasms in the muscle.
Tetanus can be caused if initial care does not take place after the wound occurs and therefore, it is very important to immediately take care of the wound.
To treat the wound tetanus immunoglobulin and tetanus toxoids are given to the person, however, it is necessary to give the two injections using different syringes and at different sites, because the immunoglobulin can cause neutralization fo the toxoid.
Thus, this could be the answer.
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Question 14 of 20
You have two rocks made of the same material that are at the same
temperature. The first rock has three times the mass of the second rock. How
does the thermal energy of the two rocks compare?
A. The first rock has six times the thermal energy of the second rock.
B. The second rock has three times the thermal energy of the first
rock.
C. The second rock has one-third as much thermal energy as the first
rock.
D. The rocks have the same amount of thermal energy.
Answer:
The rocks have the same amount of thermal energy.
when testing the temperature of catalase, why did the enzyme catalase work best at 37°c? (select all that apply.)
The catalase worked best at 37 °C because the temperature is optimal.
Enzyme and temperatureEnzymes are proteinous substances that are capable of speeding up the rate of biological reactions.
However, enzymes are very specific in actions and work best at a specific temperature range.
Below the temperature range, the activities of enzymes reduce and may even become denatured.
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The measurement of the geographic distribution of species on the planet is referred to as
Answer:
Biogeography is the study of the distribution of species and ecosystems in geographic space and through geological time. Organisms and biological communities often vary in a regular fashion along geographic gradients of latitude, elevation, isolation and habitat area.
Answer:
Biogeography
Explanation:
Reviewing Meiosis:
1. How many cells are present and how many chromosomes are present in the cell at each stage?
start of Meiosis____
end of Meiosis 1_____
end of Meiosis 2____
1. How many cells are present and how many chromosomes are present in the cell at each stage?
start of Meiosis a parent cell that is diploid
end of Meiosis 1 when the chromosomes of each homologous pair arrive at opposing poles of the cell.
end of Meiosis 2 four haploid daughter cells
a protein that is found to a carbohydrate is called a __________
A protein that is bound to a carbohydrate is called a glycoprotein in this scenario.
What is a Glycoprotein?
This refers to a type of protein in which carbohydrate is covalently attached to it.
The presence of the glycan changes the properties of the protein such as the solubility etc.
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The ____ builds an important barrier against pathogens, but it has to absorb ___ efficiently at the same time.
The small intestine builds an important barrier against pathogens, but it has to absorb nutrients efficiently at the same time for optimum function.
What is a pathogen?A pathogen refers to living microorganisms that are capable of causing diseases and harm to their host. Thus, they include the following:
ProtozoaFungiWormsVirusBacteriaBasically, the small intestine has the ability to build an important barrier against pathogens. However, it has to absorb nutrients efficiently at the same time for optimum function of an organism.
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What types of animals are prosimians?
Prosimians are a group of less-developed primates.
What are Prosimians?They are a group of primates with some less-developed features as compared to other primates.
The more developed primates are referred to as Simians and these include humans, apes, and monkeys.
Prosimians include both living and extinct animals such as the lemur, lorises, and galagos.
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give a well-detailed explanation of the importance of the amniotic sac to the mammalian embryo
Answer:
The amniotic sac and its filling provide a liquid that surrounds
and cushions the fetus . It is a site of exchange of essential
substances, such as oxygen, between the umbilical cord and the
fetus. It allows the fetus to move freely within the walls of the
uterus. Buoyancy is also provided
A page is to a book as a ___________ is to the genome.
A page is to a book as a gene is to a genome.
What is the relation between a gene and a genome?
A gene is a fundamental unit of heredity and a DNA sequence that determines the production of a specific gene, which can be a RNA or protein.
However, the genome is the collection of or the total of all the DNA sequences in an organism.
Therefore, as a page which is a unit is to a book, so as the gene is to the genome.
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What is the benefit of using utility-scale solar for energy over using active solar energy for a home?
A. Homeowner can sell electricity for profit
B. Homeowner will have immediate cost savings.
C. Homeowner is not responsible for installation.
D. Homeowner will see if you were cost savings over time.
Answer:
I think the answer is choice D
This cycle is significantly affected by the extraction of fossil fuels. Photosynthesis is a major flux in this cycle. The weathering of rock is a major flux in this cycle. Transpiration is a major flux in this cycle. This cycle's largest reservoir is the atmosphere. This cycle's largest reservoir is ocean water. This cycle is affected by the release of detergents in treated wastewater. Nitrification is a major flux in this
This cycle is significantly affected by the extraction of fossil fuels an this is the carbon cycle.
Which organic cycle is worried in burning of fossil fuels and photosynthesis with the aid of using plants?It is saved in what are referred to as reservoirs, and it actions among those reservoirs thru a number of processes, which includes photosynthesis, burning fossil fuels, and actually liberating breath from the lungs. The motion of carbon from the reservoir to reservoir is referred to as the carbon cycle.
This cycle is significantly affected by the extraction of fossil fuels. Photosynthesis is a major flux in this cycle.Read more about carbon cycle:
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Mr. jones science class is comparing three samples. Mr.jones divided his class up into four groups. Each group was given one of each of the samples to measure the mass. What would be the explanation why group 3's measurements were so different from the rest of the groups
It could be that group 3 was given a different sample entirely.
Mass measurementThe class was divided into 4 groups, whereas, only 3 samples were to be weighed and compared.
Thus, it could be that group 3 was given another sample that is entirely different from the other groups.
If group 3 was actually given one of the 3 samples, it means that they made a mistake during weighing.
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Which membranous structures conduct impulses through the sarcoplasm to stimulate the release of calcium?.
Answer:T-tubules
Explanation
The action potential invades T-tubules and causes the L-type calcium channels to open, which in turn causes ryanodine receptors (RyRs) in the SR to open and release calcium, which stimulates contraction.
04. Describe one way in which decay by microorganisms is useful.
Answer:
Decay by microorganisms helps in enriching the fertility of the soil....
Explanation:
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What two components are often found as part of an ezyme
Answer:
Apoenzyme and the co-factor are the two components of an enzyme.
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Repair of coronary vessel is called:
The repair of the coronary vessel is called; Angioplasty
How do you repair a vessel?Coronary vessels or arteries are defined as the blood vessels that supply oxygen-rich blood to the heart muscle in order to keep it pumping.
Now when there is a damage to the coronary vessel, it is repaired by a procedure called Angioplasty. This procedure is used to open blocked coronary arteries caused by coronary artery disease.
Angioplasty restores blood flow to the heart muscle without open-heart surgery and can be done in an emergency setting such as a heart attack.
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Scientists group organisms into kingdoms by looking at specific characteristics. Thermus aquaticus, shown below, is a specialized bacteria called a thermophile. Thermophiles are microorganisms that can live in bodies of water that are extremely hot, such as deep sea hydrothermal vents.
A microscopic image of thermus aquaticus.
Which characteristic most likely describes a mushroom but not Thermus aquaticus?
cell wall
eukaryotic
unicellular
prokaryotic
Eukaryotic is the characteristic most likely describes a mushroom but not Thermus aquaticus because it is a is prokaryotic organism.
What are eukaryotic organisms?Eukaryotic organisms are life forms that are characterized to have cell nuclei and membrane-bound organelles.
Eukaryotic organisms can be either unicellular or multicellular (e.g. plants and animals).
In conclusion, Eukaryotic is the characteristic most likely describes a mushroom but not the bacterium Thermus aquaticus.
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what event occurs at the end of the germinal period?
The event that occurs at the end of the germinal period is the zygote being implanted in the uterus walls.
What is the germinal period?The germinal period is the phase ranging from fecundation to zygote implantation into the uterus.
This period (germinal phase) is characterized by the generation of a zygote from germinal cells.
In conclusion, the event that occurs at the end of the germinal period is the zygote being implanted in the uterus walls.
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What are the oval shaped structures that can be found all over the slide.
The oval-shaped structures that can be found all over the slide are Nucleus.
What are a nucleus and its function?
The nucleus controls and holds the activities of the cell (e.g., growth and metabolism) and has the genes, and structures that include the hereditary data.
Nucleoli are miniature bodies often seen within the nucleus. The gel-like matrix in which the nuclear features are poised is the nucleoplasm.
Thus, oval-shaped structures that can be found all over the slide are Nucleus.
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take a subject or origins or a question you have and write a minimum of 500 words as a research project. Be sure to list all references and resources as part of your bibliography. Other information can be found at a library or other reference source.
To write a report on the origin of life first identify the different theories and then use reliable sources to explain these theories.
What are the theories of the origin of life?Life emerged as a result of chemical reactions that created complex structures.Life first emerged in clay that contained different chemical elements and simple substances.Organic compounds essential to life existed on ice that later melted.Life began in space.How to write a report?Look for credible articles, research reports, etc. that support and explain each of the theories.Using the information from the sources and your own words explain each of the theories, the evidence that proves it, and its flaws.Learn more about the report in:
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Please use the graph to the
left to help you answer this
question.
Which of the following
describes the DEPENDENT
variable?
A. the group in which the conditions
were not changed
B. the variable that is changed by the
person doing the experiment and
located on the x-axis
C. the variable that is observed or
measured by the experimenter and
located on the y-axis
9
D. the observation that the
experimenter made that started the
experiment
Answer:
C
Explanation:
The dependent variable is always the outcome, data, or what is being measured in an experiment.