Under a light microscope, cyanobacterial heterocysts are observed to be larger and have thicker walls than other cells in the filament. this is to protect the heterocyst from exposure to oxygen.
What are cyanobacterial heterocysts?
Some filamentous cyanobacteria, including Nostoc punctiforme, Cylindrospermum stagnale, and Anabaena sphaerica, produce specialized nitrogen-fixing cells known as heterocysts or heterocytes during nitrogen shortages. Using the enzyme nitrogenase, they fix nitrogen from dinitrogen (N2) in the air to provide the filament's cells the nitrogen they need for biosynthesis.
Since oxygen inactivates nitrogenase, the heterocyst needs to establish a microanaerobic environment. The distinct physiology and structure of heterocysts necessitate a broad alteration in gene expression.
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Which statement illustrates bias in scientific research?
When one result or response is "systematically incorporated into sampling or testing by selecting or promoting one answer above others," bias is present in the study.
Bias can appear at any stage of the research process, including study design, data collecting, data analysis, and publishing.
How is prejudice impacted by research?If the researcher allows his prejudice to skew the measurements, observations, or their interpretation, bias can harm the research. It is unfair to all of the students when professors assess some students more or less favourably than others in their courses due to teacher prejudice.
Encourage critical thinking about the working hypothesis and give it thorough consideration. Make certain that all interested parties review the source data. Do not rely on the analysis and summarization of a single person. Create tests to validate your theory.
Research bias, also known as experimenter bias, is the process through which the scientists doing the research skew the findings to support a certain hypothesis.
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What are the pros and cons of netting in biodiversity
Biodiversity offsets are quantifiable conservation initiatives that are added to existing preventative and mitigation efforts to make up for inevitable damage.
In terms of species diversity, habitat quality, and ecosystem function, offsets should result in no net loss of biodiversity and, ideally, a net gain. The debate over biodiversity offsets is contentious since some governments are promoting offsets as a means of "accelerating development, or more simply as a means of undermining comprehensive land planning and allowing detrimental development on protected territory." There has been a lot of pushback to this. Purchasing fewer products and ensuring that the ones you do purchase have a minimal impact on biodiversity investing in initiatives to advance biodiversity looking for ways to cut of consumer products, such as food, clothing, and electrical equipment.
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Which of these is a result of possibilsm?
A. Popularity of lightweight clothing in Cuba.
B. Elevated housing in flood zones along the coast.
C. Community gardens in Death Valley.
D. Affinity for outdoor activities in New Zealand.
E. Lower rates of vegetarianism.
explain why transfusion with distilled water is not recommended for a dehydrated patient
Since the water will be going into the blood, it needs to be isotonic to the blood. Blood cells contain salts, so if pure water were transfused into the blood cells, all the water would go into the cells and explode. This is why transfusions use a saline solution.
the scientific method allows us to focus on _____ in order to determine how things work
Answer: objectively establishing facts through testing and experimentation
Explanation: The basic process involves making an observation, forming a hypothesis, making a prediction, conducting an experiment and finally analyzing the results.
Study the image.
AN
////
Which point shows the trade winds?
O 1
02
3
The point 2 in the image shows the trade wind. As it moves east to west and north to south of the equator.
Types of windPlanatary windTrade windThe westerliesPeriodic windLocal windWhat is trade wind?The trade winds are defined as the winds which reliably blow north to south similarly east to west of the equator. The winds helpful for the ships who directing to or travel west.
Why wind arises?These winds arises due to the Coriolis forces which deflect winds towards left in the southern hemisphere and right in the northern hemisphere.
Thus, we concluded that point 2 in the image shows the trade wind.
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DISCLAIMER:The above question is incomplete. Here the complete question:
Which point shows the trade winds?
What are gametes?
Eggs and sperm
Linking amino acids
Identical chromosome pairs
Fertilized eggs
What drives motility in sporozoa?
a. flagella
b. pseudopodia
c. cilia
d. sporozoa are non-motile
Sporozoa are non motile organisms.
What do you mean by sporozoa and why they are non motile?Sporozoa are parasitic non motile protozoa that have a complex life cycle usually involving both sexual and asexual generation often in different hosts and includes important pathogens. Sporozoans do not have flagella or cillia for locomotion . They depend on twisting and bending on move.
Sporozoa do not have flagella or cillia for locomotion. So, they are non motile .
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A new brand of fertilizer called Potent Grow hits the market accompanied by advertisements that claim it is better than the leading brand. The current leading brand, Super Plantz, is famous for its slogan “What plants like best”. Design an experiment to test the companies’ claims, making sure to include descriptions of: The independent variable. The dependent variable. The control group The experimental group. A step-by-step explanation of the experiment including explanations of what kind of data you would collect to form your conclusion.
A new fertilizer brand named Potent Grow enters the market with commercials claiming to be superior to the market leader.
Super Plants, the market leader at the moment, is well known for its slogan, "What plants like best." Create an experiment to verify the claims made by the companies, being sure to describe the independent variable, the dependent variable, and the control group. The experimentation teams.
The chance of fertilization by mutant pollen is around 1.6 times lower than by wild-type pollen, according to research on the transmission rate of the spik-1 gene in heterozygous plants. The authors came to the conclusion that the spik-1 allele reduces pollen competitive capacity.
A step-by-step explanation of the experiment with details on the types of data you would gather to draw your conclusions.
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Which methods can you use to move text from one part of the document
to another? Select all that apply.
The method that is used to move text from one part of the document to another is to cut and paste the text. The correct option is B.
What are copy and paste?Copy is the command of the computer that copies a text or image or any file, and it can be pasted to another place within the computer. The shortcut for copy is CTRL c and the shortcut for paste is CTRL v. these buttons are given on the keyboard.
The paste is the function of a computer by which the test, image, or file that is copied is being pasted to the place.
Therefore, the correct option is B. Cut and paste the text.
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The question is incomplete. Your most probably complete question is given below:
Go to Backstage view and click the Move button
Cut and paste the text
Press the Print Screen key on your keyboard
Select the text, then click and drag it to another location
The process of using each strand of a dna molecule as a template to form a new strand is called ________.
Answer:
DNA replication
Explanation:
can somebody help me with this?
Answer:
Growth and development
Explanation:
The diagrams show the stages of growth in the human offsprings
If an individual with type o blood mates with an individual with type ab blood, what are the possible blood phenotypes of their offspring?.
Explain how free fatty acid mobilization from the adipose cell decreases during maximal work in spite of the cell being stimulated by all the hormones to break down triglycerides.
Here are the reasons how free fatty acid mobilization from the adipose cell decreases during maximal work in spite of the cell being stimulated by all the hormones to break down triglycerides:
1) The higher H+ concentration, which may inhibit hormone sensitive lipase.
2) The high levels of lactate during heavy exercise.
3) Inadequate blood flow to adipose tissue
4) Insufficient albumin needed to transport the FFA in the plasma
It could be brought on by increased H+ levels, which could inhibit HSL, high lactate levels during vigorous activity, which encourage the re-synthesis of triglycerides, appropriate blood supply to the adipose tissue, or a lack of albumin, which is required to carry FFA in the plasma.
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If p. caudatum is roughly twice as large as p. aurelia, how did the total number of cells compare after 22 days of separate growth?
After 22 days of separate growth, the two species had approximately the same volume (just over 200 micrometers). If P. caudatum was twice as large, then it took about half as many cells as P. aurelia to make up the same volume.
The experiment here clearly indicates that when each species are growth seperately in separate media they show very well growing potential and the cell volume.
The genus Paramecium of the phylum Ciliophora contains the unicellular organisms known as Paramecium aurelia. They have cilia all throughout their bodies, which aid in locomotion and feeding. Paramecium has three ways of reproducing: asexually, sexually, and by endomixis.P. caudatum has two contractile vacuoles, which function to expel extra water taken in from the environment and control the body's water content.To know more about P. caudatum visit:
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Which functional group, if found in the r group of an amino acid, would most likely be able to form an ionic bond force with a charged amino group on another molecule?.
Carboxyl functional group is found in the R group of an amino acid, which most likely forms an ionic bond force with a charged amino group on another molecule.
In organic chemistry, amino acids are classified as organic compounds. The full form of amino acids is α-amino [alpha-amino] carboxylic acid.
The structure of amino acid shows that it contains an amino group and a carboxyl group as functional groups.
Each amino molecule is composed of a carbon atom also called alpha carbon (α-carbon), a hydrogen atom, and an R group.
The carboxyl group, H atom, and r group all are attached to the carbon atom to satisfy its valency i.e. 4.
To put it simply, amino acids contain a carboxylic functional group and they are the building blocks of proteins.
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Biology: The purpose of a wetland is to decrease the impact of farm animal waste and nitrogen- and phosphorus-rich fertilizers on the nutrient cycles in water ecosystems. When constructing a wetland, what factors should farmers consider?
In the wetland, ammonia is absorbed by plants or converted to nitrogen gas through volatilization. Nitrification can also occur changing ammonia into nitrites and nitrates. The nitrate form of nitrogen is more readily removed from surface water by wetland plants than the ammonium form.
Wetlands are able to remove nitrogen and phosphorus through a combination of physical, chemical, and biological processes. These naturally occurring processes adsorb/absorb, transform, sequester, and remove the nutrients and other chemicals as water slowly flows through the wetland.
On average, created and restored wetlands significantly reduce the transport of TN and TP in treated wastewater and urban and agricultural runoff, and may thus be effective in efforts to counteract eutrophication.
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Ammonia in the marsh is either taken up by plants or volatilized into nitrogen gas. Ammonia may undergo nitrification, which results in the formation of nitrites and nitrates. Wetland plants are better at removing the nitrate form of nitrogen from surface water than the ammonium form.
Physical, chemical, and biological processes work together in wetlands to remove nitrogen and phosphorus from the environment. As water slowly moves through the marsh, these naturally occurring processes adsorb/absorb, convert, sequester, and eliminate the nutrients and other contaminants.
In order to effectively combat eutrophication, built and regenerated wetlands considerably restrict the movement of TN and TP in treated wastewater as well as in urban and agricultural runoff.
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Complete the following sentence.
should be performed in order to reduce aggression and accidental breeding.
A special technique known as castration should be performed in order to reduce aggression and accidental breeding in animals.
What does animal castration mean?The expression animal castration makes reference to a procedure that eliminated reproductive features in a given animal, which may reduce aggressive behaviors and completely eradicate mating and therefore also the generation of offspring by sexual reproduction.
In conclusion, a special technique known as castration should be performed in order to reduce aggression and accidental breeding in animals.
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Researchers conducted a study concerning cellular transport in animal cells affected by mitochondrial disease the disease affect an organisms ability to produce ATP during their study which method of cellular transport still function in the affected animal cells
Answer:
organisms ability to produce ATP during their study which method of cellular transport still
Explanation:
function in the affected animal cells
pleese help i need answers for this
Answer:
C - The same traits as the single parent.
Explanation:
Asexual reproduction is the production of offspring from one parent, and the DNA will always be identical to that one parent.
If ammonia is used as an energy and electron source by a bacterium, that bacterium would be considered a ___.
If a bacterium uses ammonia as an energy as well as electron source, it is classified as lithotrophic chemotrophic.
Descriptive terms for lithotrophic chemotrophic:Humans, fungi, and also many prokaryotes are chemotrophs that get their energy from organic chemicals. Lithotrophs are chemotrophs that obtain energy from inorganic substances such as hydrogen sulfide (H2S) as well as reduced iron. Lithography is a microbiological phenomenon that is unique in the globe.
What is the difference between chemoautotrophs and chemolithotrophs?Chemotrophs are creatures that get energy from their surroundings by oxidizing electron sources. These compounds might well be organic (chemoorganotrophs) or inorganic (chemoorganotrophs) (chemolithotrophs). The term chemotroph is used in contrast to phototroph, which uses solar energy.
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topic: cell membrane
Makes up the bilayer (2 answers)
Answer: a continuous double layer of lipid molecules in which membrane proteins are embedded. This lipid bilayer is fluid, with individual lipid molecules able to diffuse rapidly within their own monolayer. The membrane lipid molecules are amphipathic. The most numerous are the phospholipids.
Explanation:
Biological membranes consist of a continuous double layer of lipid molecules in which membrane proteins are embedded. This lipid bilayer is fluid, with individual lipid molecules able to diffuse rapidly within their own monolayer. The membrane lipid molecules are amphipathic. The most numerous are the phospholipids. When placed in water they assemble spontaneously into bilayers, which form sealed compartments that reseal if torn.There are three major classes of membrane lipid molecules—phospholipids, cholesterol, and glycolipids. The lipid compositions of the inner and outer monolayers are different, reflecting the different functions of the two faces of a cell membrane.
Select three ways you can denature an enzyme.
a) ph
b) temperature
c) boiling
d) increase in concentration of enzyme
e) acid base neutralization
Answer:
-ph
-temperature
(there is another option which is cutting oxygen away from the enzymes)
Use the following DNA sequences and transcribe each into mRNA.
ATACCGATACGGACT
TCATCGGATACGCGC
CGGATCCAGTCACTA
1. UAUGGCUAUGCCUGA
2. AGUGCCUAUGCGCG
3. GCCUAGGUCAGUGAU
Which organelle would play the most direct role in eliminating bacteria engulfed by a phagocytic white blood cell?.
Lysosome would play the most direct role in eliminating bacteria engulfed by a phagocytic white blood cell.
An organelle of a cell that is membrane-bound and houses digestive enzymes is called a lysosome. Numerous cell processes involve lysosomes. They disassemble extra or worn-out cell components. They could be utilized to eliminate invasive bacteria and viruses. A lysosome performs three primary tasks: it repairs damaged cell membranes, breaks down and digests macromolecules (carbohydrates, lipids, proteins, and nucleic acids), and it mounts defenses against pathogens like bacteria, viruses, and other antigens. Lysosomes are frequently budded from the Golgi apparatus membrane, but they can also form gradually from late endosomes, which are vesicles that convey components that have been endocytosed into the cell.learn more about Lysosome here: https://brainly.com/question/5534167
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According to Arrhenius, an acid produces H+ ions when dissolved in water?
Explanation:
According to Arrhenius, the acids are the hydrogen-containing compounds which give H+ ions or protons on dissociation in water and bases are the hydroxide compounds which give OH− ions on dissociation in water.
One side effect common with the older antipsychotics, but less common with the newer ones, is:__________
Pseudo-Parkinsonism is a side effect that is more prevalent with earlier antipsychotics but less prevalent with newer ones.
What exactly is an antipsychotic drug?Antipsychotic medications, also known as neuroleptics, are typically used to treat psychotic, primarily in schizophrenic but also in a wide range of other psychotic disorders.. Along with mood stabilizers, they are a crucial element of the treatment for bipolar illness.
What antipsychotic medication is the strongest?Neutropenia can be brought on by clozapine, which has the most potent antipsychotic impact. Poor patient compliance, which causes psychotic symptoms to repeat, is a challenge in the treatment of schizophrenia.
Trifluoperazine, a first-generation antipsychotic (FGA), is the only antipsychotic now FDA-approved for the treatment of anxiety.
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In humans, a cleft chin is dominant and no-cleft is recessive. What will the generations look like? assume that mendel’s method of crossing two true breeding parents with opposite traits is followed. Check all that apply.
Here are what the generations look like assuming that Mendel’s method of crossing two true breeding parents with opposite traits is followed:
The F1 generation will have all cleft chinsThe P generation and F2 generation will have cleft chins and no-cleft chins.This inquiry suggests that a gene that codes for cleft presence is implicated. Cleft chin allele (C) is dominant, whereas cleft-free allele (c) is recessive.
If two genuine breeding parents, such as CC (cleft chin) cc (no cleft chin), are crossed (see attached image). The Cc genotype is present in the F1 generation of children.
The following progeny are created when Cc Cc is crossed to create the F2 generation: CC, Cc, Cc, and cc.
CC's chin will be cleft.CC will have a cleft chincc has no cleftHere is another question with an answer similar to this about allele dominance: brainly.com/question/290081
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Question correction:
In humans, a cleft chin is dominant and no-cleft is recessive. What will the generations look like? Assume that Mendel’s method of crossing two true breeding parents with opposite traits is followed. Check all that apply.
The P generation, F1 generation, and F2 generation will have all cleft chins.The P generation, F1 generation, and F2 generation will have all no-cleft chins.The P generation and F1 generation will have all cleft chins.The F1 generation will have all cleft chins.The P generation and F2 generation will have all no-cleft chins.The P generation and F2 generation will have cleft chins and no-cleft chins.The P generation, F1 generation, and F2 generation will have cleft chins and no-cleft chins.Amino acid is to a protein as
1. Fat is to a lipid
2. DNA is to RNA
3. Sugar is to fat
4. Nucleotide is to nucleic acid
Answer: A) Fat is to a lipid.
Explanation:
In a human body
what's the difference between
(nervous tissue) and (nerves) ?
Are they the same ?
Answer:
Nervous tissue is the tissue that makes up the nervous system, which includes the brain, spinal cord, and nerves. Nerves are the part of the nervous system that carry messages between the body and the brain.
Explanation:
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