The definition of a parasitic relationship is what
Answer:
A parasitic relationship is one in which one organism, the parasite, live off of another organism, the host, harming it.
Please select the word from the list that best fits the definition
help relieve the symptoms of a viral infection
genetic material
active
inactive
vaccines
over-the-counter medications
ability to multiply
Answer:
OTC medication
Explanation:
Although vaccines make sence vaccines help prevent a viral infection
otc medication is used to fight the symptoms
consider the flu shot you might get the flu shot and still get sick so you have to bur flu medicine,
Polio viruses contain DNA. The viruses in the polio vaccine have DNA in which the base sequence has several differences from the base sequence in the normal polio virus. Suggest how this makes them unable to reproduce in the human body.
Answer:
The polio strains cannot reproduce because they are weakened.
If a person has one dominant and one recessive trait for a gene, the allele combination is …
Answer:
hybrid
Explanation:
Which good container is suitable for transporting food
There are a lot of types of containers suitable for transporting food, depending on the specific needs and requirements such as:
Food Storage ContainersInsulated Food ContainersPlastic containersWhich good container is suitable for transporting foodFood storage containers are special containers made out of different materials like plastic, glass, or stainless steel. They can be big or small and have different shapes. They usually have lids that seal tightly to stop things from leaking and keep the food fresh.
Insulated food containers are made to keep food warm or cool for a long time. They are usually created using materials that keep heat or cold inside, like foam or materials with two layers of walls, to keep the temperature just right. Insulated food containers are great for keeping your hot soups, stews, or cold salads at the right temperature when you need to take them somewhere.
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Soil generation and soil conservation are equally effective agricultural strategies.
Please select the best answer from the choices provided
OT
OF
Answer:
Your Answer is True. True
Any physical or behavioral characteristic that an organism has developed
over time is
A) Adaptation
B) Evolution
C) Natural Selection
D) Species
Answer:
A) Adaptation
Explanation:
which is the main chemical substance found in khat?
Answer:
The principal active components in khat are cathinone and cathine (norpseudoephedrine) (see also Drug profile on synthetic cathinones). Chewing khat releases these substances into the saliva; they are rapidly absorbed and eliminated.
Explanation:
Why is it difficult to find the fish named after former president Barack Obama
10 time asking because of link spammers.
What are the three parts to a feedback loop?
Select one:
Positive, negative, and neutral pathways.
Receptors, producers, and transmitters.
Stimulus, sensor, and response.
Input, output, and direction of signal.
Answer:
Stimulus, sensor, and response.
You may assume the Sickle Cell locus is in Hardy Weinberg equilibrium. Also, the term carrier implies that the person has a particular allele in his/her genotype, but is not affected with the condition. If the proportion of an African population that are susceptible to Malaria is 0.688, what proportion of the population are carriers for the Sickle Cell allele (HbS)
Answer:
The frequency of the population that are carriers is 0.284 or 28.4%
Explanation:
According to Hardy-Weinberg equilibrium equation, p² + q² + 2pq = 1
Also, the sum of the allele frequencies for all the alleles at the locus, p + q = 1.
Where where p is the frequency of the dominant allele and q is the frequency of the recessive allele in the population.
p² = dominant h0m0zygous genotype frequency
2pq = heterozygous genotype frequency
q² = recessive h0m0zygous genotype frequency
From the given data; the dominant h0m0zygous genotype, i.e., the proportion of an African population that are susceptible to Malaria, p² = 0.688
p = √0.6880 = 0.829
But p + q = 1; q = 1 - p
Since p = 0.829, q = 1 - 0.829
q = 0.171
Frequency carriers for Sickle Cell allele, i.e., the heterozygous genotype = 2pq
Frequency of carriers = 2 × 0.829 × 0.171 = 0.284
Therefore, the frequency of the population that are carriers is 0.284 or 28.4%
Explained the effects of the use of antibodies in the control of a disease
Answer:
An antibody, also known as an immunoglobulin, is a large Y-shaped protein produced by B- cells and used by the immune system to identify and neutralize foreign objects such as bacteria and viruses.
Each tip of the “Y” of an antibody contains a paratope (a structure analogous to a lock) that is specific for one particular epitope (similarly analogous to a key) on an antigen, allowing these two structures to bind together with precision.
Though the general structure of antibodies is very similar, a small region at the tip of the protein is extremely variable, allowing millions of antibodies with different antigen binding sites to exist. This region is known as the hypervariable region.
Five isotypes of antibodies are found in different locations and perform different specific functions.
The base of the Y plays a role in modulating immune cell activity. This region is called the Fc region, and phagocytes may bind to it to initiate phagocytosis.
Antibodies that bind to surface antigens on a bacterium attract the first component of the complement cascade with their Fc region and initiate activation of the classical complement system.
I’m having trouble with the question can someone help
Answer:
ans: B
Explanation:
a grp of cell is tissue
a grp of tissue is organ
a grp of organs are organ system
a grp of oragan system is organism
9 ¿Cuál es la similitud entre una marea muerta y una marea de primavera?
Answer (in English):
Both Spring and Neap tides occur twice each month. Spring tides occur twice each lunar month all year not regarding what season it is. Neap tides, which also occur twice a month, occur when the sun and moon are at right angles of each other.
En Espanol:
Tanto las mareas vivas como las mareas muertas ocurren dos veces al mes. Las mareas de primavera ocurren dos veces cada mes lunar durante todo el año sin importar en qué estación se encuentre. Las mareas muertas, que también ocurren dos veces al mes, ocurren cuando el sol y la luna están en ángulos rectos entre sí.
What is the function of the placenta?
A. To protect the developing fetus
B. To help the developing fetus communicate with the mother
C. To hold the developing fetus in place
D. To provide the developing fetus with food, water, and oxygen
Answer:
it's either a or d I know this I'm in child development but I'm pretty sure it's a d but it might help protect the fetus because it's trying to keep it attached and keep it from floating around but it could be d because to provide developing food water and oxygen that would be the only way it could breathe and that's how it gets his nutrients because when the mother is breathing in oxygen and eating that's how the baby gets to take in all that stuff with the mother
To provide the developing fetus with food, water, and oxygen is the function of placenta. Therefore, option (D) is correct.
What do you mean by placenta?An organ that grows inside the uterus during pregnancy is the placenta. A developing infant receives oxygen and nutrients from this structure.
As your womb gets smaller, your placenta will fall out and the blood vessels that were holding onto it will close. This assists with forestalling a lot dying - despite the fact that draining a little is ordinary.
The placenta is the membrane that the mother and fetus use to exchange gases, nutrients, and other things. Syncytiotrophoblast, cytotrophoblast, embryonic connective tissue, and the endothelium of fetal blood vessels all contribute to the formation of the membrane.
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c. Challenge: You are working with a neuronal cell line isolated from a human brain tumor. It appears to have a neuronal phenotype when grown in culture on laminin coated dishes but appears to have more of a typical round, small (3 to 5 micrometer) phenotype when grown on a standard, collagen-only coated dish or a poly-lysine coated (positive charge only - no ECM component) dish. Under all 3 cases the cells attach to the substrate. You suspect that the reason the neuronal phenotype is supported by the laminin coating is due to the ability of laminin, but not collagen or poly-lysine, to bind to the integrin receptors RGD binding domain thus triggering a molecular cascade that leads to the expression of the neuronal phenotype. How might you test this hypothesis
Answer:
This process can be performed using immunofluorescence analysis via antibodies.
Explanation:
To test for the hypothesis
To test for the hypothesis we have to analyze whether the neuronal phenotype is due to the binding of laminin to integrins, and this will enable us to determine which integrins are abundantly expressed on the neuronal cell membrane. This process can be performed using immunofluorescence analysis via antibodies
Finally when no differentiation markers are expressed in the laminin coated plates with mutant cells we can now say that it expresses integrins
When blood passes through a capillary bed in the
it downloards O2 and uploads CO2.
Answer:
Exchange of gases takes place at alveoli sacs of lungs, which are equipped with capillary vessels or bed.
Explanation:
On inspiration or taking air through nostrils, surrounding air enters the lungs and it reaches air sacs or alveoli. Here, the outside air will have more amount of oxygen when compared with oxygen in blood at that site. Hemoglobin in the blood have high bonding capability to oxygen, so it captures oxygen and takes it to heart for pumping into other parts of the body. Likewise, the circulations continues from lungs to heart > hear to body parts > body parts to heart > heart to lungs for purification.
The skeleton of the human hand is similar in structure to
a. Bird's wings
b. Ancient fish
c. Dog's legs
d. All of the above
Answer:
a. Bird's wings
Explanation:
Answer Choices;
O A. O short, 4 long
O B. 4 short, O long
C. 3 short, 1 long
D. 2 short, 2 long
Explanation:
O A. O short, 4 long
Because this type
In sediments and waterlogged soil, dissolved O2 concentrations are so low that the microorganisms living there must rely on other sources of oxygen for respiration. Some bacteria can extract the oxygen in sulfate ions, reducing the sulfur in them to hydrogen sulfide gas and giving the sediments or soil a distinctive rotten-egg odor. What is the oxidation number of sulfur in these compounds
Answer:
SO₄²⁻ (+6)
H₂S (-2)
Explanation:
To determine the oxidation number of sulfur in a compound, we need to consider that the sum of the oxidation numbers of the elements present is equal to the charge of the compound.
Some bacteria can extract the oxygen in sulfate ions...
SO₄²⁻
1 × ON(S) + 4 × ON(O) = 2-
1 × ON(S) + 4 × -2 = 2-
ON(S): +6
...reducing the sulfur in them to hydrogen sulfide gas...
H₂S
2 × ON(H) + 1 × ON(S) = 0
2 × +1 + 1 × ON(S) = 0
ON(S): -2
The person who will give me answer the earliest i will mark him/her brainliest
Answer:
yeast is used in bakeries
Answer: See explanation below.
Explanation:
18. By nitrogen fixation by leguminous plants. Nitrogen content is replenished naturally in the soil due to the presence of a particular bacteria in the soil.
19. Washing will help remove bacteria from the surface of fruits and vegetables. One should not ever consume bacteria, which is why we wash our fruits and vegetables.
20. Biological control is the beneficial action of parasites, pathogens, and predators in managing pests and their damage. Biocontrol provided by these living organisms, collectively called “natural enemies,” is especially important for reducing the numbers of pest insects and mites.
21. You need to get pictures of agricultural machines (machines used for farming).
22. Microorganisms are broadly classified in four groups: Bacteria, fungi, protozoa, and algae.
23. Viruses are even smaller than bacteria, because they aren't even a full cell. They are simply genetic material.
24. The culture of bacteria called “Lactobacillus delbrueckii” produces yogurt.
25. Yeast has commonly been used for the making of bread, for example.
26. In anaerobic respiration yeast breaks down glucose, forming ethanol and carbon dioxide as its waste products. When the glucose is nearly used up, and provided that oxygen is present, yeast uses the ethanol as a respiratory substrate to produce carbon dioxide and water in aerobic respiration.
27. Typically, the term is used to describe an infectious microorganism or agent, such as a virus, bacterium, protozoan, prion, viroid, or fungus. A pathogen may also be referred to as an infectious agent, or simply a germ.
28. Penicillins and Cephalosporins are two.
29. In 1796, the British doctor Edward Jenner did.
30. Fermentation is the chemical breakdown of a substance by bacteria, yeasts, or other microorganisms, typically involving effervescence and the giving off of heat.
31. Refrigeration is the process of subjecting food or drink to cold in order to chill or preserve it.
32. A vaccine is a biological preparation that provides active acquired immunity to a particular infectious disease.
33. These diseases are considered as curse words, so they will be spelled differently: 3bola and C0VID-19
34. Aster yellows, bacterial wilt, and blight are all examples.
A CBC specimen was rejected for testing by the hematology department. The tube was filled completely and labeled properly. What might have been the reason for rejection?
Answer:
Explanation:
The only thing I can think of is that if you are testing blood for a CBC, you are sometimes required to reject the 1st sample. Perhaps the technician forgot to take a sample that is just meant to be pitched or it was improperly labeled. I get my blood checked every other week, and the people who take it out are scrupulously careful in making sure that the first tube is labelled as waste. No one has every made the mistake of not doing it, but I can see it happening.
The question says it was properly labeled. I didn't see that. The only other thing I can think of is that the machine improperly recorded what the blood cells were and the numbers were all out of kilter.
1. Riley and Casey have been dating for about 6 months. Riley tells Casey
how much they love to be alone together. Whenever Casey is around
Riley's friends, Riley makes fun of Casey. Riley also gets upset with Casey
when friends talk with Casey, accusing Casey of flirting with their friends.
This is an example of an abusive relationship.
A. True
B. False
Answer:
True
Explanation:
In a good relationship you shouldn't make fun of you significant other or get upset if they want to spend time with their friends.
Yes, it is an example of an abusive relationship. One should not make fun of his or her partner.
What is an abusive relationship?An abusive relationship is in which any person is abusive with his or her partners.
It can be a threat, or physical or mental abuse.
Always insulting and making fun is also an abusive relationship.
Riley and Casey are in an abusive relationship according to the given circumstances.
Thus, Yes, it is an example of an abusive relationship. One should not make fun of his or her partner.
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Which of the following is not a reason carbon is so vital to life .
Answer: Carbon only bonds with other carbons
Explanation: It cannot be the answer because carbon forms bonds with other elements as well.
A small proportion of humans have resistance to strains of HIV, the virus that causes AIDS. Their immunity is caused by a deletion in gene CCR5, a co-receptor on white blood cells needed for HIV infection. The proportion of people with resistance (genotype aa) to HIV is approximately 8%. If these alleles are in Hardy Weinberg equilibrium, what proportion of people are carriers for the HIV resistant allele?
Answer:
The correct answer is "40.6%". A further explanation is provided below.
Explanation:
The given values are:
The proportion of people with resistance is,
aa = 8%
or,
= 0.08 (q²)
q² = 0.08
q = √0.08
= 0.28284
Now,
⇒ [tex]p+q=1[/tex]
⇒ [tex]p=1-q[/tex]
[tex]=1-0.28284[/tex]
[tex]=0.717157[/tex]
hence,
For the HIV resistant allele, the proportion of people will be:
= [tex]Aa[/tex]
= [tex]2pq[/tex]
On substituting the values, we get
= [tex]2\times 0.71715\times 0.28284[/tex]
= [tex]0.4056[/tex]
= [tex]40.6[/tex] (%)
The proportion of the population with the carrier of HIV-resistant allele is 40.56%.
What is Hardy Weinberg equilibrium?
Hardy Weinberg equilibrium is the relationship between the variation from one generation to the next. The equation for the relationship can be given as:
[tex]p^2+2pq+q^2=1[/tex]
Where the proportion of dominant alleles is p².
The proportion of recessive alleles is q².
The proportion with the caries are 2pq.
The given recessive allele proportion in the population is 0.08. The proportion of dominant alleles can be given as:
[tex]q^2=0.08\\q=0.2828[/tex]
The dominant alleles can be given as:
[tex]p+q=1\\p+0.28284=1\\p=0.717157[/tex]
The carriers in the population can be given as:
[tex]\text{Carriers}=2pq\\\text{Carriers}=2\;\times\;0.717157\;\times\;0.2828\\\text{Carriers}=0.4056\\\text{Carriers}=40.56\%[/tex]
Thus, the carriers for the HIV gene in the population are 40.56%.
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The Arg genes that encode the enzymes for arginine biosynthesis are located at several positions around the genome of E.coli, and they are regulated coordinately by a transcription regulator encoded by the ArgR gene. The activity of the Arg R protein is modulated by arginine. Upon binding arginine, ArgR alters its conformation, dramatically changing its affinity for the DNA sequences in the promoters of the genes for the arginine biosynthesis. A. Given that ArgR is a repressor protein, would you expect that ArgR would bind more tightly or less tightly to the DNA sequences when arginine is absent?
Solution :
The Arg genes is used to synthesize the arginine. Arginine is chemical building block. It is very important and is used by our body to make the proteins for our body. When the Arg ID is abundant, the expression for the biosynthetic genes must turned off. And if the ArgR behaves as the gene repressor, then the binding of the arginine increases the infinity for the regulatory sites, and allows it to the bind and then shut off the expression of the genes.
If the ArgR acts as the gene activator, then the binding of the arginine would be predicted to reduce the affinity for the regulatory DNA, and preventing the binding and the shutting off the expression for the Arg genes.
Which of the following is not a step in the mass production of an organic substrate in a fermentor?
Select one:
a. Inoculate the sterile media in the growth vessel with the microbe of interest.
b. Adjust the environmental conditions for optimal growth of the organism.
c. Add enzymes to catalyze all required steps in the process.
d. Harvest cells and purify the product.
e. Remove waste products and dispose responsibly.
Which of the following is not a step in the mass production of an organic substrate in a fermentor?
I think E. To remove waste products and dispose responsibly.
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Which of the following is a homeostatic response when the human body is fighting an infection?
Select one:
Negative feedback producing more antibodies in the blood.
Positive feedback releasing more enzymes into the blood.
Negative feedback increasing body temperature.
Positive feedback increasing heart rate.
Explanation:
The immune response contributes to homeostasis by helping to fight off infection and heal after infection or trauma. During an infection, molecules called pyrogens are released, which alert the brain to increase the temperature of the body, causing a fever
The homeostatic response when the human body is fighting an infection is negative feedback, increasing body temperature; that is the third option, as increasing body temperature helps to inhibit the growth and replication of pathogens and also enhances the immune response.
What is homeostasis in a fever?When the body is fighting an infection, it triggers a complex set of responses to try to restore homeostasis and overcome the infection. One of these responses is the activation of the immune system, which produces various cells and molecules to fight off the invading pathogens.
One of the most important homeostatic responses during an infection is the increase in body temperature, which is known as fever. The body's thermostat, which is located in the hypothalamus of the brain, is set to a normal temperature of around 37°C (98 °F). However, during an infection, the body may raise its temperature to 38°C (100.4°F) or higher.
Hence, the homeostatic response when the human body is fighting an infection is negative feedback, increasing body temperature; that is the third option.
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Production of the male gametes is known as
ОА.
Oogenesis
O B.
Spermatogenesis
O c.
Seminiferous
D.
Semengenesis
Answer:
answer is C spermatogenesis
What is species evenness?
a. The distribution of species throughout a habitat
b. The number of different populations in a community
c. The relative abundance of species in a community
The relative abundance of species in a community is known as species evenness. Therefore, option C is correct.
What is species evenness?Species evenness refers to the measure of the relative abundance of different species within a community or ecosystem. It describes the balance of the distribution of individuals among the different species present in a particular area.
For example, a community with high species evenness would have similar numbers of individuals in each species, while a community with low species evenness would have a few dominant species with many individuals and many less abundant species with fewer individuals.
Species evenness is often used in conjunction with species richness, which refers to the total number of different species present in a community, to provide a more complete picture of the biodiversity of an area. Thus, option C is correct.
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