What are the four body parts that a flatworm has?
what is blood transfusion why should we donate the blood
Answer:
To keep blood safe, blood banks carefully screen donated blood. The risk of catching a virus from a blood transfusion is low. Sometimes it is possible to have a transfusion of your own blood. During surgery, you may need a blood transfusion because of blood loss.
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Explanation:
During _____ women experience rapid contractions around the vagina that may or may not produce a vaginal secretion or ejaculate.
Can glucose be directly used for energy
identify the main characteristerics of cells
Answer:
mitochondria, ribosomes, nuclei, golgi bodies, cell walls, cytoplasm...
Explanation:
Lipids commonly contain fatty acids. What are the two parts of a fatty acid? Check the correct answers below. amino group long chain of carbon and hydrogen carboxyl group R group nucleotide
Answer:
long chain of carbon and hydrogen
carboxyl group
The correct choices are - long chain of carbon and hydrogen and carboxyl group as fatty acid have long chains of hydrocarbons with carboxyl group makes it acid.
A fatty acid is an aliphatic chain with carboxylic acid that can be either saturated or unsaturated. Fatty acids make the lipid membrane with glycerols. A fatty acid consists of
A long chain of an even number of carbon atoms and hydrogen atoms along the length of the chain at the end of the chainA carboxyl group (―COOH) at the other end.The carboxyl group makes it an acid (carboxylic acid).Thus, the correct among the given choices are - long chain of carbon and hydrogen, a carboxyl group.
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Describe an experiment you would perform to test a proposed chloroplast-targeting signal sequence. Be specific about the type of cell and the proteins you would use. Describe the results you would expect if the sequence is indeed a chloroplast-targeting signal.
Answer:
I would fuse the gene encoding the protein carrying the putative chloroplast-targeting signal sequence with the gene encoding Green Fluorescence protein. The GFP-tagged target protein enable to study the expression of the putative chloroplast localization signal sequence and its final cellular localization
Explanation:
The Green Fluorescence protein (GFP) is a protein widely used in molecular biology to investigate the expression of specific genes and then track the movement of proteins in living cells. This protein also can be used as a cell marker and to identify protein-protein interactions. When GFP is excited to a given wavelength (excitation peak 395 nm), it emits green light (emission peak 509 nm), thereby the expression/localization of the GFP-target fusion constructs can be evidenced by using a fluorescence microscope.
ANSWER THE 4 QUESTIONS FOR BRAINLIEST AND 10 POINTS
1. The sun's position changes,because the Earth turns on its axis,which causes the sunlight to hit at different angles. This means that after a period of time,the sun no longer shines on one side. It will be dark/night on one side and light/day on the other side.
2.Shadows change,because the angle that the light hits us is different overtime.
3.The flagpole will look the same from when it started at the exact time.
4.Overtime our shadows become small and you may not be able to see it. That is mostly for small objects.You can see the but for small and certain angles.
Hope that this helps. This took a long time I would appreciate a Brainliest.Enjoy.-From Nea.
Which scenario is an example of a scientific way of thinking?
A. A scientist writes a play that illustrates the challenges monarch
butterflies face on their long, yearly migration.
B. A scientist collects monarch butterfly specimens from each part
of their life cycle and creates a display.
C. A scientist observes the different parts of the life cycle of
monarch butterflies and collects detailed descriptions.
D. A scientist talks to various organizations about the importance of
preserving habitats vital to the survival of monarch butterflies.
Answer:
C To make observations
Explanation:
you need to form questions,making hypothesis and analysing the data
Answer:
C. A scientist observes the different parts of the life cycle of
monarch butterflies and collects detailed descriptions.
Explanation:
Apex
Which explanation describes why males are more likely to exhibit sex-linked disorders than females? Males have two X chromosomes that amplify all sex-linked disorders. Males have one X chromosome on which most sex-linked disorders are located. Males have only one functional sex chromosome on which all gender traits are located. Males have multiple sex chromosomes that mutate causing sex-linked disorders to become visible.
Answer:
males have one X chromosome
Explanation:
The explanation that describes why M are more likely to have linked disorders than W is that M have an X chromosome on which most linked disorders are located.
InheritanceLinked inheritance refers to genes located on chromosomes that are involved in trait determination.
In humans, the male chromosome Y has few genes. On the other hand, the female chromosome X has a large number of genes involved in the determination of various characteristics.
XY chromosomes have small homologous regions at their ends. Thus, there is practically no recombination between their genes.
When the altered gene is on the X chromosome. This type of inheritance has a recessive pattern.
It is the maternal inheritance. In this case, sons inherit X chromosome genes only from their mother. Meanwhile, F daughters inherit one from the father and one from the mother.
The manifestations will be present because they have only one X chromosome, that is, they do not have any normal gene for that characteristic.
With this information, we can conclude that the manifestations will be present in men, as they have only one X chromosome.
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QUESTION 1
What percentage of infectious HBV carriers are asymptomatic?
A. 100%
B. 20%
C. 50%
D. 30%
Answer:
Symptomatology and transmission
The clinical manifestations of acute HBV infection are age dependent. Infants, young children (younger than 10 years of age), and immunosuppressed adults with newly acquired HBV infection are usually asymptomatic. [2] Older children and adults are symptomatic in 30%–50% of infections
Why do the plant cells in these two images have different structures?
A. Because every plant cell has a different structure
B. Because they are in different stages of development
C. Because they have different jobs, or functions
D. Because the DNA in their nuclei are very different
Answer:
C
Cells have different shapes because they do different things. ... The shapes of cells have evolved to help them carry out their specific function in the body, so looking at a cell's shape can give clues about what it does. Neurons are cells in the brain and nervous system.
The plant cell in the images have different structures because they have different jobs, or functions
Why are all plant cells have different structures?All plants are very different because of their environments.
Plant cells are different in shapes because they are in different places in the plant and do different jobs. Some cell stores food,some perform photosynthesis etc.- Animal cells also have many shapes like nerve cells, germ cells etc.According to options:-
A. Because every plant cell has a different structureB. Because they are in different stages of developmentC. Because they have different jobs, or functionsD. Because the DNA in their nuclei are very differentThe answer will be (option A) they have different jobs, or finctions.
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If the carrying capacity of the pond is 1,500 for this species, what is the expected population size after one year
Answer:
450
Explanation:
A fish population of 250 in a pond has a maximum annual rate of increase of 0.8. If the carrying capacity of the pond is 1,500 for this species, what is the expected population size after one year?
The annual rate of increase in the population is 0.8 and the population is currently 250 in the pond, hence, the expected population size after one year can be calculated as thus:
Expected increase in the population = 0.8 x 250
= 200
Expected population size after one year = 250 + 200
= 450
Since a population of 450 has not exceeded the carrying capacity of the pond, the expected population size after one year is, therefore, 450.
The expected population size after one year is 450
Data obtained from the question•Current population = 250
•Annual rate of increase = 0.8
•Expected population size =?
Determination of the expected increaseWe'll begin by calculating the expected increase in the pond. This can be obtained as follow:
•Current population = 250
•Rate of increase = 0.8
•Expected increase =?
Expected increase = Current population × rate
Expected increase = 250 × 0.8
Expected increase = 200
Determination of the Expected population size•Current population = 250
•Expected increase = 200
•Expected population size =?
Expected population size = Current population + Expected increase
Expected population size = 250 + 200
Expected population size = 450
Complete question:
A fish population of 250 in a pond has a maximum annual rate of increase of 0.8. If the carrying capacity of the pond is 1,500 for this species, what is the expected population size after one year?
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What do the layers in this sedimentary rock reveal?
sedimentary rock showing lines of different colored rock formed over time
Public Domain
Question 1 options:
Why the dinosaurs all died
How the landscape changed over time
When we can expect the next earthquake
What the temperature will be in the future
Answer:
How the landscape changed over time
Explanation:
Which climate zone would the location on this map be at 40 N and 60N?Hint:ohio is in the zone
Answer:
Zone 2
Explanation:
took the test ohio is in zone 2 and that is how i came to that conclusion.
The climate zone would location on this map is 40 N and 60N is the tropical zone. The correct option is zone 3.
What is a tropical zone?The tropics are areas of the Earth that are roughly in the center of the globe. The tropics lie between the latitude lines of the Tropics of Cancer and Capricorn.
The Equator and sections of North America, South America, Africa, Asia, and Australia are included in the tropics. The earth is divided into parts according to its conditions.
The tropic is an area of the Earth located around the equator and between the Tropics of Cancer in the Northern Hemisphere and the Tropics of Capricorn in the Southern Hemisphere. This area is also known as the tropical zone and the torrid zone.
Therefore, the correct option is 3, tropical zone.
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The world has been through 5 mass extinction events. We lost over 50% of the species on the planet
each time they happened. How do you think the Earth would be different if we did not have any
extinction events?
Answer: yes because 50% more palnts and animals would be alive.
Explanation: no cap
WILL GIVE BRAINLIST FOR CORRECT ANSWERS
Answer:
wave b
Explanation:
Water vapor GAINS energy when it CONDENSES into a liquid.
A. True
B. False
Answer:
Explanation:
B. False it loses energy in the form of heat. Therefore, this process is exothermic.
pick 4 simple machines and explain how they are used in your everyday life
Answer:
1. Cars
Because they help me and my family get places
2. Phones
Because I think that they also help my getting u places and just for entianment or school
3. Computers
They help with school as well
4. TVs
They help with the news
Explanation:
what molecule is energy stored in the process of respiration
Answer:
Hope the above picture might help you :)
Help please !
A strand of messenger RNA (MRNA) has the nucleotide
sequence GAA. This corresponds to an amino acid called leucine.
Which three nucleotides does the transfer RNA (TRNA) carrying leucine have?
Select one:
1. CGG
2.CUU
3.AGG
4.ACC
Answer:
2. CUU
Explanation:
i did some research
CUU are the nucleotides which transfer RNA carrying leucine. So, the correct option is (B).
What is RNA?RNA stands for Ribonucleic acids which is present in all living cells and have structure similarities to DNA.
It is a single stranded structure. It has a backbone made up of alternative phosphate group and the sugar ribose. Sugar is attached to one of the four bases. They are adenine (A), uracil (U), cytosine (C) or guanine (G).
There are three types of RNA which exist in cells messenger. They are messenger RNA (mRNA), ribosomal RNA (rRNA) and transfer RNA (tRNA).
1. Messenger RNA (mRNA) is translated into a polypeptide.
2. Transfer RNA (tRNA) will bind an amino acid to one end and has an anticodon on the other.
3. Ribosomal RNA (rRNA) helps facilitate the bonding of amino acids coded for by the mRNA.
Some of the RNAs are involved in gene expression regulation. As per the Central dogma of Molecular Biology, main role of RNA is to convert the information which is stored in DNA into proteins through the process called transcription.
Thus, CUU are the nucleotides which transfer RNA carrying leucine. So, the correct option is (B).
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What is a marine ecosystem?
Answer:Marine ecosystems are the largest of Earth's aquatic ecosystems and are distinguished by waters that have a high salt content. These systems contrast with freshwater ecosystems, which have a lower salt content.
Explanation:
s
Answer:e a marine ecosystem is the life underwater like sea creaters ,a weed etc s
Explanation:
online defnation : Marine ecosystems are characterized by the biological community of organisms that they are associated with and their physical environment.
heres a fact Some important characteristics of the marine ecosystem are: They make up 70% of the earth’s surface. They dissolve the salts in their own waters. Supplies food for humans and generates socioeconomic benefits. They fall into the category of aquatic ecosystems
Which is a chemical property of ethanol?
A. boiling point
B. density
C. flammability
D. melting point
Answer:
C
Explanation:
We know that ethanol is flammable
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Astronomers often compare the colors of stars. Knowing the color of a star is most useful in determining
-the size of the star.
-the temperature of the star.
-the distance of the star to Earth.
-the number of planets orbiting the star.
Answer:
yes yes
Explanation:
What type of mutation causes a change in what amino acid the DNA strand
codes for?
Silent
Non Silent
Answer:
Non Silent
Explanation:
Mutation, is generally, any change or alteration to the genetic sequence of a DNA. However, mutation can be of different types depending on how it occurs. According to this question, a mutation is said to be SILENT if it involves the substitution of a nucleotide with another nucleotide that does not change the protein molecule encoded by the gene. In other words, the mutation happens in such a way that both the original sequence of gene and the mutated one codes for the same amino acid sequence (protein).
On the other hand, a mutation is NON SILENT i.e missense or nonsense mutations, if the mutation causes a change in what amino acid the DNA strand codes for. For example, in missense mutation, a different amino acid is produced while in nonsense mutation, a STOP codon is produced.
Science Project :
Teacher bent over and asked what can I fit. What can I fit?
Genetic Engineering has many exciting benefits but also some potential risks.
True
Or false
Answer:
True
Explanation:
Answer:
True
Explanation:
Many Genetic Engineering jobs have good pay-out or help the world, but sometimes they can be dangerous.
How does energy move through living systems?
A. Energy can be created by organisms and can be passed on if it is not used by that organism
B. All of the energy is used up by organisms as they move, grow and reproduce so less energy is available for the next organism in the food chain
C. Energy is transformed and/or lost as heat as it passes from one organism to the next, but the total amount always stays the same
D. Energy is created during photosynthesis
Answer:energy is produced during photosynthesis. energy is used by the photosynthesiser or lost as heat, with the remainder available to the next organism in the food chain.
Explanation: self explanatory
During which step of the cell cycle does a cell get a signal to begin cell division?
Answer:
Prophase
Explanation:
Prophase is not only the first step of Mitosis and Meiosis (I and II), but it is crucial because it helps the chromatin become chromosomes, this is after Interphase where DNA replication occurs this is the signal that starts the dividing process. This phase also helps with condensing the chromosomes which acts as another signal to division because the chromosomes are prepared to be separated from one another. Spindle fibers (microtubules) are also created to get ready for separation. Now that these main things happened during Prophase, it signifies the rest of the cell and the other phases occur.
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I need someone to answer 11
Answer:
Explanation:
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