Answer:
Cas9
Explanation:
Genome editing techniques have been developed to exploit the CRISPR system of bacteria and archaea. Only the Cas9 component of the system is used in editing.
Which elements or substances do you think are the most important for life as we know it? (Hint: What are the molecules that make up cells made of?)
Answer:
carbon is the main element
Explanation:
Organic compounds make up the cells and other structures of organisms and carry out life processes. Carbon is the main element in organic compounds, so carbon is essential to life on Earth. Without carbon, life as we know it could not exist.
what happens to the diaphragm during breathing in
Answer:
Upon inhalation, the diaphragm contracts and flattens and the chest cavity enlarges. This contraction creates a vacuum, which pulls air into the lungs. Upon exhalation, the diaphragm relaxes and returns to its domelike shape, and air is forced out of the lungs.
Which process depends on binding between specific molecules on both the host and pathogen, so that the pathogen can gain a stable foothold on host tissues
Adhesion depends on binding between specific molecules on both the host and pathogen so that the pathogen can gain a stable foothold on host tissues.
What is adhesion?In epidemiology, adhesion makes reference to the process in which pathogen and host interact during an infection.
The adhesion process is fundamental to reach the survival of the pathogen during a particular infection.
These pathogens can be any type of microorganism able to cause harm to the host (e.g., bacteria and fungi).
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What is the different between an equinox and a solstice?
Just remember that solstices are the longest and shortest days of the year, while equinoxes occur when the day and night are equally as long. Regardless of whether it's a solstice or an equinox, there's bound to be a celebration happening somewhere.
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Lexi,
The source that is converted directly into electrical energy by photovoltaic cells.
Answer:
sunlight
Explanation:
Which choices describe a characteristics of a species that is likely to become invasive?
Select all that apply.
A. thrives near human developments
B. tolerates a range of environments
C. highly specialized
D. reproduces rapidly
A. thrives near human developments
B. tolerates a range of environments
D. reproduces rapidly
The choices that describe the characteristics of a species that is likely to become invasive are that it thrives near human developments and reproduces rapidly, which are in options A and D.
What is an invasive species?Human activities such as land use changes, construction, and transportation can create disturbed habitats that may be more suitable for certain non-native species. Non-native species that are able to thrive in these disturbed habitats have a higher chance of establishing themselves and becoming invasive. Rapid reproduction is a characteristic that allows a species to quickly establish a population and outcompete native species for resources. This can lead to a population explosion and the dominance of the ecosystem by the invasive species. For example, zebra mussels are a non-native species that reproduce rapidly, with each adult female producing up to one million eggs per year.
Hence, the choices that describe the characteristics of a species that is likely to become invasive are that it thrives near human developments and reproduces rapidly, which are in options A and D.
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Identity
Write "E' next to statements that describe the epidermis, "D" next to statements that describe the dermis, and
"H" next to statements that describe the hypodermis.
During a game of basketball on the playground, the glands in this layer go to work to cool your body.
The dermis is the layer of the skin where the sweat glands which work to cool your body are found.
What are sweat glands?Sweat glands are glands which produce sweat which is helps to cool the body when the body is hot.
The sweat glands are found in the middle layer of the skin known as dermis.
The other layers of skin are the epidermis found in the outermost layer and the hypodermis found in the deepest layer of the skin.
Therefore, the dermis is the layer of th skin where the sweat glands which work to cool your body are found.
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You are comparing the events of meiosis I in cells from several different organisms. You come across one species in which you do not observe any chiasmata. The best conclusion to make is
The best conclusion to make if no chiasmata is observed in a species is that crossing over does not occur in that species.
What is chiasmata?Chiasmata is the contact point between the two chromatids of a chromosome during the prophase stage of meiosis.
Chiasmata forms during the process of crossing over in meiosis, where sister chromatids of non-homologous chromosomes exchange genetic material.
According to this question, the events of meiosis I in cells from several different organisms is being compared. However, no chiasmata was observed in a particular species.
Therefore, the best conclusion to make if no chiasmata is observed in a species is that crossing over does not occur in that species.
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In eukaryotic cells, if you compared the DNA sequence of a gene with the sequence of the processedmRNA that was transcribed from the gene you would find
The DNA sequence of a gene differs from the sequence of the processed mRNA that was transcribed from the gene as it is longer and contains thymine instead of uracil.
What are processed mRNA?Processed mRNA refers to RNA they has been transcribed from a the DNA sequence of a gene.
A processed mRNA has the following differences from the DNA sequence of a gene:
It is relatively shorter It replaces thymidylate with uridylateTherefore, when comparing the DNA sequence of a gene with the sequence of the processed mRNA that was transcribed from the gene, it is longer and contains thymine in place of uracil.
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Which of the following might occur if people fail to conserve water? a. increased sewage system failures b. increased numbers of natural pollution filters c. increased water supply d. increased wildlife habitats Please select the best answer from the choices provided A B C D
Answer:
A. ) Increased sewage system failuresExplanation:
How can failing to conserve water contribute to the greater water contamination?Desalination has no known negative impacts on the environment. How can failing to conserve water contribute to greater water contamination? a - Over irrigating fields causes an increase in pollution that results from runoff.Brownfields are best described as _______. a. parcels of polluted land that cannot be redeveloped safely b. polluted land that must be remediated before being redeveloped c. land where pollution has killed all vegetation, turning it "brown" d. fields with excess organic waste and animal feces please select the best answer from the choices provided a b c d
Brownfields are best described as ; ( B ) Polluted land that must be remediated before being redeveloped.
What is a brownfiledA brown field is an underused or abandoned piece of land ( usually indutrial ) which is suspected or actually contaminated with chemicals or other forms of environmental contamination. An example of a brownfiled is an abandoned gas station and a metal plating facility. For a brownfield to be redeveloped the land must be remediated.
Hence we can conclude that Brownfields are best described as ; ( B ) Polluted land that must be remediated before being redeveloped.
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match the correct term for each definition below.
______ changes in an organism’s structure
______ changes in an body’s internal response to environmental changes
______ changes in organism behavior
a. Evolution
b. Artificial selection
c. Natural selection
d. Structural adaptation
e. Behavioral adaptation
f. Physiological adaptation
In a pcr reaction, the strands of dna are first separated by ___.
Answer:
In a pcr reaction, the strands of dna are first separated by heat.
Explanation:
Gasoline and propane fumes accumulate in what part of the boat.
Answer:
They accumulate in the bilge, the lowest part of the boat. Both gasoline and propane fumes are heavier than air. For that reason it's very important that the bilge of a boat has sufficient ventilation.
Hypothesis hurry please!
IF CO2 is added to water,
THEN the pH of the water will ____________ ____________________________________
BECAUSE…Explain here using info from the background research
Answer:
As atmospheric CO2 levels increase due to anthropogenic causes, dissolved CO2 also increases, which in turn decreases the pH of water.
Look at the Luminosity vs. Period graph. Notice that a the
period of a Cepheld variable increases, so does its luminosity. A luminosity of 4,000 Suns means that the star Is 4,000 times
brighter than the Sun.
8000
Mean luminosity (Suns)
6000
4000
2000
Period (days)
10
15
20
If the luminosity of a st
s 6000 suns, what is its period in days?
Answer:
yes
Explanation:
In some traits, different phenotypes result from genes whose alleles each contribute a specific increment to the whole. The phenotypes then have a ________ phenotypic distribution.
Answer:
Bill nye the science guy
Explanation:
cuz
The phenotypes then have a different phenotypic distribution.
What is phenotypic distribution?The variation between genotypically identical individuals as well as the average differences between genotypes determines the phenotypic distribution of a trait.
However, each is a result of the succession of habitats in which the creatures grow and thrive.
Across environmental gradients, phenotypic distribution within species can vary greatly, but predictions of species responses to environmental change frequently presumptively assume that species react uniformly throughout their ranges.
Therefore, different phenotypes are caused by genes whose alleles each add a particular increment to the total in some traits. The distribution of the phenotypes changes as a result.
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How long does it take for a collapsed lung to heal.
Answer:
Two weeks
Explanation:
Recovery from a collapsed lung generally takes about one to two weeks. Most people can return to full activity upon clearance by the doctor.
Researchers have observed striped
hyenas and gray wolves hunting
together in certain areas
One hypothesis suggests that changing
hunting behavior aids both species in
obtaining better
and more resources. In this hypothesis
the hyenas benefit because the wolves
chase and take
down large animals, such as goats, that
the hyenas usually cannot catch alone
The wolves
benefit from hyenas using their jaw
strength to crack open large bones of
prey to access
additional nutrients from bone marrow.
Which table best identifies the
ecological relationships among the gray
wolf, hyena, and
goats?
In the table, option D is the right answer because hyena and wolves have a relationship of mutualism whereas wolve is the predator and goat is the prey.
What is mutualism?It is a symbiotic reationship in which both the organisms get benefit. The wolves and hyene gets benefit of getting food by killing of goat or other hervores.
So we can conclude that option D is the right answer.
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Nitrogen-rich compounds found in animal waste or the remains of dead plants and animals are converted to _____ by decomposer bacteria.
Nitrogen-rich compounds found in animal waste or the remains of dead plants and animals are converted to ammonium ions by decomposer bacteria.
Hope that helps!
Question 5 (1 point)
River plants have to cope with moving water. Plants, like eelgrass, have short wide
leaves so they don't get washed away.
True
False
Answer:
False
Explanation: I took the test. It is false eelgrass has long leaves.
Answer:
false
Explanation:
15. Human bodies constantly receive and send
information from one part of the body to another. (1 point)
muscular
important
magnetic electrical
useless
Answer:
Human bodies constantly receive and send important information
Which phrase tells a major function of the endomembrane system?
transporting substances in a cell
producing and storing energy
directing the cell’s activities
manufacturing proteins
Answer:
A
Explanation:
Answer: A. transporting substances in a cell
Explanation: k12 test
Surimi is ______. Multiple Choice a processed fish product a product processed from crab and shrimp shrimp paste made from krill shark meat that has been specially processed None of these is correct; it is a type of tuna eaten raw.
Surimi is; A processed fish product (A ) that can be made from processed fish or other kind of meat
What is Surimi?Surimi is a a type of paste made from processed fish or meat. It is usually prepared using a fish in abundant supply which is also relatively cheap in the market mixed with sorbitol and sugar.
An example of the type of fish used for preparing Surimi is Alaskan Pollock.
Hence we can conclude that Surimi is A processed fish product
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If an organism normally has 34 chromosomes, how many molecules of dna should there be in the g1 phase of the cell cycle?.
Answer:
12 DNA molecules in G1.
Explanation:
I only have 3 mins how is pH of the water will increase
Answer:Ph increases by adding a more basic solution
Explanation:
During meiosis i, maternal and paternal chromosomes come together during the process called ________ to form a ________.
Answer:
synapsis, tetrad
Explanation:
SCIENTIFIC definition of the word "property" in your own words
Answer:
I believe the scientific property referes to the composition, on an atomic level, of an element or compound. It's property(ies) are what constitutes the element in an isolated state, but also how it reacts to changes in environment: (temperature, humidity, etc..); but also how it reacts to other elements. What changes occur and if it has the potential to change it's molecular "structure".
Amaya collected insects in the forest. she was unable to identify one unusual looking insect using a dichotomous key. amaya concluded that the insect must be a new species. which facts would support the conclusion that the insect is a new species? the insect cannot be identified based on one of the first three questions. the way the insect was collected may have caused damage to its exoskeleton and wings. several other thorough and up-to-date dichotomous keys also failed to identify the insect. the normal diet of many insects in the forest has been seriously altered by a recent drought.
The dichotomous key is a tool to identify organisms based on the observable traits. As Amaya collect insect and not able to identify means several other up-to-date dichotomous keys failed to identify them.
What is dichotomous keys ?Classification helps in identification of different organisms. Dichotomous keys plays an important role in this.
It helps to identify and classify organisms on the basis of their characteristics.
It is the most common type of identification key used. When creating this key, both qualitative factors and quantitative factors are kept in mind.
As Amaya's collected insect is not identified by dichotomous key, she considered it as a new species, it can be said that several other thorough and up-to-date dichotomous keys also failed to identify the insect.
Thus, the correct option is C.
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Answer:
The dichotomous key is a tool to identify organisms based on the observable traits. As Amaya collect insect and not able to identify means several other up-to-date dichotomous keys failed to identify them.
What is dichotomous keys ?
Classification helps in identification of different organisms. Dichotomous keys plays an important role in this.
It helps to identify and classify organisms on the basis of their characteristics.
It is the most common type of identification key used. When creating this key, both qualitative factors and quantitative factors are kept in mind.
As Amaya's collected insect is not identified by dichotomous key, she considered it as a new species, it can be said that several other thorough and up-to-date dichotomous keys also failed to identify the insect.
Thus, the correct option is C.
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Explanation:
cuxz
how does the enzyme reverse transcriptase violate the central dogma of biology
Answer:
The enzyme reverse transcriptase reverse transcribes the RNA in the genome of HIV to DNA.
Explanation:
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