Answer:
True
Explanation:
Carson's 1962 bestseller first warned the public about the devastating effects of chemical pesticides—and started a revolution. Carson's 1962 bestseller first warned the public about the devastating effects of chemical pesticides—and started a revolution.
Answer: true
Explanation:
The CRISPR-Cas9 system can be used to repair a mutant version of a gene in living cells. How does that process occur
The CRISPR-Cas9 system can be used to repair a mutation by recombination of the mutated sequence with a construct containing the normal gene.
What is the CRISPR-Cas9 system?The CRISPR-Cas9 system is a genome editing tool used to correct in vivo genetic mutations in a cell.
The CRISPR-Cas9 system contains a Cas protein that cuts DNA in a specific region of the genome according to a single guide RNA and thus produces desired genetic modifications.
In conclusion, the CRISPR-Cas9 system can be used to repair a mutation by recombination of the mutated sequence with a construct containing the normal gene.
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What is the term for thin, stained slice of tissue mounted on a microscope slide?
The correct term is histological section.
What are histological sections?Histology has to do with the study of tissues. Sectioning has to do with cutting very thin slices of objects.
Thus, histological sectioning is an act of cutting very thin slices of tissues for the purpose of mounting such on microscope slides. To enhance views and differentiate different parts of cells, sections of tissues are often stained.
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Which item is a carbon source?
OA. Burning of fossil fuels
OB. Fossil-fuel deposits
O C. Limestone rock formations
OD. Replanting of rain forests
Answer:
A
Explanation:
Burning of fossil fuels
The same DNA strand is analyzed in four species of fish. Two species have more identical nucleotides than the others.
What does this mean?
A.They look more similar in appearance.
B.They are more closely related.
C. They do not share a common ancestor.
D. They are less closely related.
Answer:
It means that they are closely related.
Explanation:
ASAP Look at the position of Location 1, Location 2, and Location 3 on a mountain.
Simple diagram of a mountain represented by a triangle. There are three labels in the diagram: Location 1 is at the middle of the left section, Location 2 is at the very top of the mountain, and Location 3 is at the middle of the right section.
Which of these statements is most likely correct about the climate of the three locations? (3 points)
A.Location 1 is cooler than Location 3 and Location 2.
B.Location 1 and Location 3 are warmer than Location 2.
C.Location 3 is cooler than Location 2 and Location 1.
D.Location 1, Location 2, and Location 3 are equally cool.
The statement which is most likely correct about the climate of the three locations is Location 1 and Location 3 are warmer than Location 2. Thus, the correct option is B.
What is Climate?Climate may be defined as the weather situations persisting in an area widespread or over a long period of time.
Climate is highly influenced by elements such as latitude and altitude. In this case, the altitude of location 2 is found to be high as compared to location 1 and location 3, and hence, the climate of location 2 is found to be cooler than location 1 and location 3.
Therefore, it is well described above.
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Compare the structure and location of the human large intestine with those of the fetal pig.
The comparison between the structure and location of the human large intestine with those of the fetal pig are as described below.
What are the differences in the hearts?Fetal Pigs usually have large intestines that is located at their left side and is primarily a predominant spiral colon.
However, the human heart is different because it has an ascending colon on the right side that is connected to the descending colon on the left side of our body by the transverse colon.
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What are the structures and functions of the tissues lining the respiratory organs?
What is the function of water on the inner surfaces of alveoli?
What is the function of surfactant on the inner surfaces of alveoli?
What are the microscopic structures within the lungs?
What important information did you learn about from this video?
Answer:
1-The respiratory system is the network of organs and tissues that help you breathe. It includes your airways, lungs and blood vessels. The muscles that power your lungs are also part of the respiratory system. These parts work together to move oxygen throughout the body and clean out waste gases like carbon dioxide.
2-The fluid represents the outermost layer of the alveolar surface that is directly exposed to air and thus to the environment. Alveolar fluid prevents desiccation of the epithelial cells and also functions as a physical protection barrier against inhaled particles and irritants.
3-The main function of surfactant is to lower the surface tension at the air/liquid interface within the alveoli of the lung. This is needed to lower the work of breathing and to prevent alveolar collapse at end-expiration.
4-The trachea (windpipe) conducts inhaled air into the lungs through its tubular branches, called bronchi. The bronchi then divide into smaller and smaller branches (bronchioles), finally becoming microscopic. The bronchioles eventually end in clusters of microscopic air sacs called alveoli.
5- i havent seen the video then how can i answer q5
What stimulates the secretion of parathyroid hormone from the parathyroid gland?.
Answer:
Low calcium levels in the blood
Explanation:
In primary hyperparathyroidism, one or more of the parathyroid glands is overactive. As a result, the gland makes too much parathyroid hormone (PTH). Too much PTH causes calcium levels in your blood to rise too high, which can lead to health problems such as bone thinning and kidney stones. this will happen if parathyroid hormones got high in human body..
Answer:
Low blood calcium
Explanation:
What do structures B and C have in common?
A.both contain chyme
B.both contain partially disgested food
C.both contain waste material ready for removed
D.both contain stored food
The structures B and C have in common is that both contain partially disgested food. Thus, the correct option is B.
What are structures B and C here represent?Structure B represents the food pipe or esophagus, while structure C represents the stomach.
Chyme is produced only when food is fixed with gastric juice which is only present in the stomach, hence option A is incorrect.
Waste material is found in the rectum of the body structure, not in the esophagus and the stomach. Thus, option C is also incorrect.
Therefore, the correct option is B.
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what happens once the neurotransmitters are released into the synapse?
Once, neurotransmitters are released into a synapse, an action potential is generated in the postsynaptic neuron.
What are neurotransmitters?Neurotransmitters are molecules which produce a nervous impulse when they are released into the junction of two nerves called a synapse.
Some examples of neurotransmitters are acetylcholine and dopamine.
Once, neurotransmitters are released into a synapse, an action potential is generated in the postsynaptic neuron.
Therefore, neurotransmitters are important in neuronal impulse transmission.
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Explain how the moon causes high and low tides.
Which organelle is responsible for giving plants colors other than green?
vacuole
chloroplast
mitochondria
lysosome
DNA is organized into structures called
microtubules
chromosomes
thylakoid stacks
nuclei
Answer:
chloroplast
chromosome
Explanation:
same
Answer:
Correct answer is vacuole.
Explanation:
Vacuoles containe anthocyanin pigment which makes vacuoles to appear in different colour such as red, blue and purple.
DNA is organized into structures called chromosomes.
Chromosome is made up of DNA tightly coiled many times around protein histone.
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Suppose an mRNA consists of 60 nucleotides; it directs a primary polypeptide chain containing __________ amino acids to be synthesized.A)18B)30C)10
Answer:18
Explanation: gilr i got grade results too
what energy is transferred during translation
Answer:
Guanosine triphosphate (GTP)
Explanation:
a purine nucleotide triphosphate, acts as an energy source during translation
During the nitrogen cycle, through which structure are nitrogen compounds first absorb into the plant?.
Answer:
Plants take up nitrogen compounds through their roots. Animals obtain these compounds when they eat the plants. When plants and animals die or when animals excrete wastes, the nitrogen compounds in the organic matter re-enter the soil where they are broken down by microorganisms, known as decomposers
Answer:
the
Explanation:
___ is a term standing for enlargement of the heart.
Cardiomegaly is a term standing for enlargement of the heart.
What is cardiomegaly?Cardiomegaly is a heart condition that occurs due to blockage of heart blood vessels or viral infections leading to the weakening and enlargement of the heart.
Therefore, cardiomegaly is a term standing for enlargement of the heart.
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Cardiomegaly is the term used for the enlargement of the heart. Details about cardiomegaly can be found below.
What is cardiomegaly?Cardiomegaly also called megalocardia is the condition of having an enlarged heart.
The heart enlarges because of damage to the heart muscle. An enlarged heart can still pump blood normally to a certain point but can get worse and lead to heart failure as time goes on.
Therefore, Cardiomegaly is the term used for the enlargement of the heart.
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Gardeners often use either chemicals or fences to protect their plants from pests. 60 gardeners were asked about their plant protection method and its success. Three of the 13 who used chemicals had pests. Seven of the 47 who used fences had pests. Please answer both questions. i) What percent of gardeners overall had pests
There are 16 percent of farmers that are affected by the pest infestation.
What percent of gardeners overall had pests?
We know that three of the 13 farmers who used chemicals had pests whereas Seven of the 47 farmers who used fences had pests. So in total there are 10 farmers that are affected from pest out of 60 farmers.
So we can conclude that There are 16 percent of farmers that are affected by the pest infestation.
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Ions are transported across plasma membranes using __________, which requires __________.
Describe the position and attachments of the parietal pericardium of the heart of the fetal pig.
The position and attachments of the parietal pericardium of the heart of the fetal pig is; The parietal pericardium is a very thin layer on the outside surface of the heart.
What is the parietal pericardium of the heart?The Parietal pericardium is a serous membrane that secretes serous fluid to lubricate heart and reduce friction.
The Parietal pericardium acts as mechanical protection for the heart and big vessels, and a lubrication to reduce friction between the heart and the surrounding structures.
The description of the position and attachments of the parietal pericardium is that is a very thin layer on the outside surface of the heart.
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This year, druehl, inc. , will produce hot water heaters at its plant in delaware, in order to meet expected global demand. To accomplish this, each laborer at the plant will work hours per month. If the labor productivity at the plant is hot water heaters per labor hour, how many laborers are employed at the plant?.
2400 laborers are employed at the plant in given case.
What do you mean by global demand?The overall demand around the globe for a good or service is called global demand.
N should represent the number of workers engaged at the plant. The total number of heaters made by all employees in an hour is:
watts = 0.15 watts per hour * N
The total number of heaters in a month will be:
heating units = 0.15 * N * 160
This must be 57600 to satisfy the anticipated demand, so:
If we solve for N using 57600 = 0.15 * N * 160, we get:
N = 57600 / (0.15 * 160) = 2400 laborers.
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Is the neurone a cell, tissue or an organ?
Answer:
Cell
Explanation:
Glial cells and neurons are the two types of cells that make up the nervous system. Four tasks are carried out by glial cells, which make up the nervous system's supporting framework: Give the neurons structural support. protect the neurons. A neuron is a specialized, impulse-conducting cell that is the functional unit of the nervous system, consisting of the cell body and its processes, the axon and dendrites. Three components make up neurons (nerve cells), which perform the integration and communication processes. Axon terminals, dendrites, and axons. The cell body, also known as the soma, is their fourth component and is responsible for the fundamental functions of neurons. In the illustration to the right, a "typical" neuron is depicted. The neuron, a specialized cell created to send information to other nerve cells, muscle cells, or gland cells, is the basic functional unit of the brain. Neurons are nervous system cells that communicate information to other nerve, muscle, and gland cells. Axons, dendrites, and a cell body make up the majority of neurons.
Answer:
nerve type of cell
Explanation:
I looked it up
The atlantic cod (gadus callarias) is a fish which lays about 5 000 000 eggs in its lifetime. On average, only two of these eggs survive to become adult cod. How does this promote evolution?
The atlantic cod (gadus callarias) is a fish which lays about 5 000 000 eggs in its lifetime. On average, only two of these eggs survive to become adult cod. This promote evolution because the environment selects the most evolved animals to survive that environment.
What is the evolutionary process?Evolutionary processes aim, therefore, to generate greater adaptation of species in an environment. When new species of organisms are formed from gradual changes in preexisting species.
So although there are several eggs initially only those that survived the environment are able and evolved to reproduce, so the evolution of species is carried out.
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The majority of the symptoms of tetanus infection are caused by the tetanus toxins, chiefly tetanospasmin. Tetanospasmin is one of the deadliest toxins known; even very small doses (nanograms) can be lethal. It targets the nerves, causing severe muscle spasms. The tetanus vaccine consists of inactivated tetanus toxin; the vaccine is highly effective for preventing tetanus. Inoculation with the tetanus vaccine leads to the production of protective antibodies. How do these antibodies prevent tetanus
Antibodies prevent tetanus as they neutralize the free form of powerful exotoxin produced.
What are antibodies?It should be noted that antibodies are the protective proteins that are produced by the immune system.
In this case, antibodies prevent tetanus as they neutralize the free form of powerful exotoxin produced. This is important to fight the infection.
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Besides drinking and cooking, in what other ways do you use water?
Without enzymes, many chemical
reactions would be....
A. slower
B. faster
C. non-spontaneous
D. easier
Animals help with seed dispersal by (doing what?)
One way animals help with seed dispersal is via digestion,
The North Atlantic right whale was classified as an endangered species in 2015. A major cause of death for these whales is collisions with shipping vessels. Several measures have been enacted to prevent such collisions in regions with a high abundance of right whales. In 2002 and 2006, shipping vessel lanes were rerouted around some of these regions. In 2008, speed restrictions were placed on the shipping vessels that were permitted to travel through these regions.
The graph below shows the estimated abundance of North Atlantic right whales from 1990 to 2015. The years in which these measures were enacted are marked on the graph.
The data in the graph is best supported by : ( D ) While changes to vessel lanes and speeds may have been beneficial to right whales, additional actions are needed to prevent population declines.
Description from the GraphFrom the data presented in the graph the population of the right whales was favored by the changes in vessels lanes but the population began to decline again in and around 2009 therefore this is evident that additional actions are needed to prevent population declines other than changing vessel routes and placement of speed restrictions.
Hence we can conclude that While changes to vessel lanes and speeds may have been beneficial to right whales, additional actions are needed to prevent population declines.
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Missing part of the question
What conclusion is best supported by the data in the graph?
A. Modifying shipping lanes is the most effective method of encouraging population growth in right whales.
B. Limiting shipping vessel speeds is the most effective method of preventing population decline in right whales.
C. Changes to vessel speeds and lanes have been effective in preventing population
declines in the right whale population, and no further actions are needed.
D. While changes to vessel lanes and speeds may have been beneficial to right
whales, additional actions are needed to prevent population declines.
Which
of the following could be considered a reliable source of scientific
information?
Answer: Textbook
Explanation: just took it
a) What did scientist Calderón-Garcidueñas find when she performed MRI
scans and autopsies on the brains of children in Mexico City? (3 points)
Review 2
A Write True or False for each statement.
1. Red blood cells have no nucleus.
2. While blood cells contain hemoglobin.
3. Amoebas are smaller than bacteria.
4. Plants and animals are multicellular.
5. Cells require water to divide..
6. Water moves across cell membranes by osmosis.
7. White blood cells destroy invading bacteria.
8. Cells that work together are called tissues.
