Answer:
tetrads change orientation as a lineup along the center of the cell
Based on your knowledge of immunological memory explain to your patient the physiological mechanisms that underlie active immunity and how it protects you from infections. Be sure to include a description of primary and secondary immune responses in terms that she will understand.
Immunological memory refers to the ability of the immune system to react previous antigen infections.
What are primary and secondary immune responses?The primary immune response refers to the initial interaction between the immune system with pathogenic microorganisms (e.g., bacteria).
The secondary immune responses refer to the second contact with the same pathogenic organism, which enables to the organism create specific antibodies against this pathogen through a process called immunological memory.
Active Immunity is a term used to refer to a type of acquired immunity caused by previous exposure to a pathogenic microorganism and/or vaccine inoculation.
Immunological memory leads to a faster and better response of the immune system against pathogen reinfection.
In conclusion, immunological memory refers to the ability of the immune system to react previous antigen infections.
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When you dissolve both compounds in water which form of each going to predominate in the solution?
Answer:
nu știu nu vreau nu pot sczzzz
Describe artificial selection, and explain how it is different from natural selection.
Answer:
Starting with natural selection, the most robust and most intelligent animals survive over the weakest. The weak animals eventually die off because they can't keep up with nature. Artificial selection isn't natural; certain species are being targeted on purpose and decide whether to stay alive or not. At this point, it is not at all about whether the species can survive or not because it's most likely being protected.
11. Given only the structure of the four nucleobases and the linear structure of D-ribose, draw the following molecules: r(GUCA) and d(GTAC). Do not forget the 5'-phosphate. (Some version of this question will be all or part of question #1 on the first examination. Now you know.).
12. What is the monomer precursor for the synthesis of nucleic acids? Why is this reaction energetically favorable? Are new monomers added at the 5'-end of the chain or at the 3'-end of the chain?
13. What is Chargaff's rule?
14. If the genome of an organism contains 32% A bases, what is the % of C bases?
15. Explain why Franklin's x-ray images of DNA fibers suggested a double helical structure for DNA.
The speculation that RNA preceded DNA and proteins in evolution. In the earliest cells, pre-RNA molecules could have had mixed genetic, structural, and catalytic features and those features could have progressively been changed with the aid of using RNA.
The presence of the X form withinside the diffraction sample indicated to Franklin that DNA strands have been helical. Each sprint of the X form marks the repetition of atoms, or atomic repeats, in DNAChargaff rule: The rule that during DNA there may be constantly equality in amount among the bases A and T and among the bases G and C. (A is adenine, T is thymine, G is guanine, and C is cytosine.) Named for the tremendous Austrian-American biochemist Erwin Chargaff (1905-2002) at Columbia University who found this rule.The crucial physiological roles performed with the aid of using the nucleic acid precursor rNTP and dNTP molecules in people has come to be obvious because the Nineteen Seventies with the aid of using the popularity of 28 exceptional inborn mistakes of purine and pyrimidine metabolism.Read more about the metabolism:
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A neuron with several extensions coming off of the soma is categorized as a neuron.
Answer:
Yes, that is correct
Explanation:
name the cell organelle which is abundant in muscle cells
Answer:
Mitochondria is the cell organelle abundant in muscles cells.
Answer:
Mitochondria
Explanation:
Mitochondria is the power house of a cell as we know so as aerobic respiration takes place the mitochondria is always actively ready to release ATP(Adenosine triphosphate) also as energy
A steady state is associated with which of the following terms
Static system
Open system
Closed system
Non-living system
Help please !! Urgently I need thus as fast as possible pleaseee
Explanation:
the plant will show positive phototropism..it will bend towards the direction of sunlight entering the box through the opening(the door)..
if it is watered , then the roots might grow and the plant would replenish, if not .then at some certain point, it won't show phototropism any longer..
hope this helped
Which short-term environmental change is
to directly affect a population of egrets along the coast
of Florida?
O drought
O earthquake
O forest fire
Answer:
The answer to your question is O drought
Explanation:
Birds live in place surrounded by water. Therefore meaning that if there was a drought they could be in danger.
I hope this helps and have a great day!
What geological change and event occurs at a convergent boundary?
Plates collide, and a mountain is formed.
Plates collide, and a rift valley is formed.
Plates move apart, and a trench is formed.
Plates move apart, and a volcano is formed.
Answer:
Plates collide, and a mountain is formed
Explanation:
if plates are of equal densites when they collide they will push up and create a mountain chain
Select all the correct answers.
This chart presents data on greenhouse gas emissions caused by human activity from 1990 to 2012. Which questions would help clarify this
evidence?
Emissions (million metric tons of
carbon dioxide equivalents)
8,000
6,000
4,000
2,000
1990
U.S. Greenhouse Gas Emissions
by Economic Sector, 1990-2013
1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012
Year
Industry
Electricity generation
Residential
Transportation
Agriculture
Commercial
The correct question is what caused the dip in greenhouse emission in transportation after 2007 and is denoted as option E.
What is a Graph?This is defined as a pictorial representation of data or variables in an organized manner.
From the graph, we can infer that there was a decrease in greenhouse emission from year 2007.
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biology lab 14 experiment 1 punnett square crosses post lab questions
Complete question: PUNNETT SQUARE CROSSES
1. Set up and complete Punnett squares for these crosses (remember Y = yellow, y = blue):
a. YY and Yy
b. YY and yy
2. Answer these questions: a. What are the resulting phenotypes? b. Are there any blue kernels? c. How can you tell whether or not there are blue kernels?
3. Set up and complete a Punnett square for a cross of two of the F1 from Step 1 (above).
4. Answer these questions: a. What are the genotypes of the F2 generation? b. What are their phenotypes? c. Are there more or fewer blue kernels than in the F1 generation?
5. Identify the four possible gametes produced by the following individuals (S = smooth, s = wrinkled):
a. YY Ss
b. Yy Ss
Punnett squares are used to get the genotypic and phenotypic frequencies among the progeny produced from a cross. Punnett squares and answers below.
What is a punnett square?The Punnett square is a graphic representation that shows the different types of gamete combinations according to the alleles involved in a cross.
Punnett square shows the probabilities of getting offspring with different genotypes and their consequent phenotypes.
In the exposed example,
Diallelic genes that codes for color
Y = yellow ⇒ dominant allele
y = blue ⇒ recessive allele
We will assume complete dominance, meaning that genotypes with at least one dominant allele will express yellow.
1)
a- Cross 1
Parentals) YY x Yy
Gametes) Y Y Y y
Punnett square) Y Y
Y YY YY
y Yy Yy
F1) Genotype
1/2 = 50% of the progeny is expected to be homozygous dominant, YY
1/2 = 50% of the progeny is expected to be heterozygous, Yy
Phenotype
100% of the progeny is expected to be yellow.
b- Cross 2
Parentals) YY x yy
Gametes) Y Y y y
Punnett square) Y Y
y Yy Yy
y Yy Yy
F1) Genotype
100% of the progeny is expected to be heterozygous, Yy
Phenotype
100% of the progeny is expected to be yellow.
2)
a. What are the resulting phenotypes? Only yellow kernels
b. Are there any blue kernels? No
c. How can you tell whether or not there are blue kernels?
Blue is the recessive phenotype for kernels. Assuming complete dominance, since all genotypes are expected to carry at least one dominant allele, all the F1 kernels are yellow.
3) Let us cross two heterozygous individuals from the F1
Parentals) Yy x Yy
Gametes) Y y Y y
Punnett square) Y y
Y YY Yy
y Yy yy
F1) Genotype
1/4 = 25% of the progeny is expected to be homozygous dominant, YY
1/2 = 50% of the progeny is expected to be heterozygous, Yy
1/4 = 25% of the progeny is expected to be homozygous recessive, yy
Phenotype
75% of the progeny is expected to be yellow.
25% of the progeny is expected to be blue.
4)
a. What are the genotypes of the F2 generation?
- 25% YY (homozygous dominant)
- 50% Yy (Heterozygous)
- 25% yy (Homozygous recessive)
b. What are their phenotypes?
- 75% yellow kernels
- 25% blue kernels
c. Are there more or fewer blue kernels than in the F1 generation?
More. Blue kernels appeared in the F2.
5. Assuming independent genes, the resulting gametes after meiosis are as follows
Gametes
a. YY Ss ⇒ YS, YS, Ys, Ys
b. Yy Ss ⇒ YS, Ys, yS, ys
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which dental material would you say is the most versatile and widely used today and why?
One of the most adaptable restorative materials in dentistry is dental amalgam. It accounts for over 75% of all restorative materials used by dentists.
What is amalgam?Dental amalgam is a mixture of liquid mercury and metal alloys used to treat cavities caused by tooth decay in dentistry. [1] Mercury (50%) is typically found in low-copper amalgam, along with silver (22–32%), tin (14%), zinc (8%), and other trace metals.
Because of the constant expansion and contraction of amalgam fillings, they can sometimes shatter the tooth. Leakage is also less likely with composite fillings. A leaking filling indicates there is a small breach between the filling and your tooth, which allows dirt and saliva to enter and cause decay.
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Which organism does a virus infect?
animals
bacteria
plants
fungi
A virus can infect animals, bacteria, plants, and fungi.
A virus can infect a range of organisms, including animals, bacteria, plants, and fungi. Viruses are unique infectious agents that require a host cell to replicate and complete their life cycle. They possess specific mechanisms to infect and hijack the cellular machinery of their host organisms.
In animals, viruses can cause a variety of diseases, ranging from the common cold to more severe conditions such as influenza, HIV/AIDS, and COVID-19. Bacteriophages, a type of virus, infect bacteria and can play a crucial role in regulating bacterial populations in various environments.
Plant viruses can impact agricultural crops, causing diseases that affect crop yield and quality. They can be transmitted through vectors such as insects or through infected seeds.
Fungal viruses, known as mycoviruses, infect fungi and can have diverse effects on their host fungi, including alterations in growth, pathogenicity, and reproduction.
Overall, viruses have evolved to exploit a wide range of organisms, adapting to specific host cells and causing various outcomes depending on the virus-host interaction.
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Genes express themselves at different times because
A. this saves time
B. this saves space
C. this saves energy
D. Only b and c are correct
Answer:
D
Hope this helps!
How many moles
are in a bag of CaCl₂ that weighs 18.14kg
In experiments intended to measure conformity it was found that
In experiments designed to measure compliance, observed participants were found to tend to obey authorities, even if their orders contradict individual common sense.
What does the Milgram experiment say?The Milgram Experiment (or Milgram Experiment) was a scientific experiment developed by psychologist Stanley Milgram. The experiment aimed to answer the question of how observed participants tend to obey authorities, even if their orders contradict individual common sense.
With this information, we can conclude that Milgram wanted to investigate what circumstances led men to commit barbarism and observe how far they would be able to go if there was a superior responsible for their actions or if he gave them instructions to violate integrity and infer pain to the other.
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what is cross breeding.write the types of breeding of goats.
Answer:
Cross Breeding is defined as mating two purebred organisms to produce offspring known as a Hybrid. The most common goat breeds include:
Boer goatAmerican PygmySaanen goatDamascus goatAngora goatBeetalSpanish goatEarth scientists have concluded that the methods of harnessing energy that have been used over the past tWO
centuries, such as the burning of fossil fuels, are causing climates around the world to change more quickly and
suddenly than ever before in human history. Evidence includes increased air temperatures, rising sea levels, and the
shrinking of glaciers in Greenland, Alaska, and other regions of Earth. The most complex level of organizational
hierarchy that climate change could potentially affect is Earth's
O biosphere.
O communities.
O organisms.
O populations.
Answer:
populations
Explanation:
according to newtons laws of motion, what causes an object to change its state of motion
Answer:
Newton's first law of motion states that there must be a cause which is a net external force for there to be any change in velocity, either a change in magnitude or direction.
For carefully selected plants what is the purpose of regular pruning?
Answer:
To trim leaves to make sure it stays healthy
Explanation:
All plants need regular pruning
3. "From a tiny seed, an informative observation may
grow" Let's Do Fun Activity.-
a) Put some soil in two jars, sow some seeds (chickpea,
kidney beans)in them.
b) Keep the jars in sunlight and water them regularly.
c) When the plants grow from the seeds then close one
jar and observe for 2-3 days.-
What do you observe? Write in your notebook?
The plant in the closed jar will die eventually due to lack of oxygen.
The plant in the jar that is not closed will live and grow.
In the absence of oxygen the plant will be unable to perform photosynthesis.What is photosynthesis?Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds. Productivity of agricultural crops directly depends upon the rate of photosynthesis.To know more about photosynthesis here
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What is Animalia Kingdom
[tex]{\huge \underline{{ \fbox \color{red}{A}}{\fbox \color{green}{n}}{\fbox \color{purple}{s}}{\fbox \color{brown}{w}}{\fbox \color{yellow}{e}}{\fbox \color{gray}{r } }}}[/tex]
It is composed of multicellular, eukaryotic, heterotrophic, aerobic, and immotile organisms that reproduce through spores, either sexually or asexually.
I hope I've helped : )
Answer:It is composed of multicellular, eukaryotic, heterotrophic, aerobic, and immotile organisms that reproduce through spores, either sexually or asexually.Explanation:
[tex]\sf XD [/tex]
All of the following are factors affecting the rate of photosynthesis except.
1. temperature
2. ultraviolet radiation
3. light intensity 4. carbon dioxide presence.
Answer:
Ultraviolet radiation does not influence photosynthesis
Answer:
Ultraviolet Radiation
Explanation:
The correct answer is ultraviolet radiation. Temperature, carbon dioxide presence, and light intensity are all critical factors in determining the rate of photosynthesis.
A population of Poison dart frogs can be red (RR), orange (Rr) or yellow (rr). The allele frequency of the mainland is R: 0.5 r. 0.5. A small
group of the frogs moves to an island off the mainland. If the group is composed of 4 red and one orange frog, what would you expect to
happen to the allele frequency?
A. Increase towards the R allele
B. Increase towards the r allele
C. Stay the same as the mainland
D. Frequency of both alleles would decrease
Answer:
A
Explanation:
it will increase with a 4:1 ratio
As per the given scenario, the allele frequency will increase towards R allele. The correct option is A.
What is allele frequency?The number of times the allele of interest is observed in a population is divided by the overall number of copies of all the alleles at that particular genetic locus in the population to calculate the allele frequency.
In the given scenario, as group of the frogs moves to an island off the mainland, the allele frequency of R will increase.
Thus, the correct option is A.
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Match the structural formula to the chemical formula for this substance
Answer:
D.) HOCOOH
Explanation:
Structural formulas identify where the atoms/bonds within a molecule are located. Therefore, the atoms need to be listed in order of appearance (left to right). This makes the best answer D.) HOCOOH.
A movement that keeps the distal end of the body segment fixed in one location describes what type of kinetic chain moveme
Answer:
Closed Chain
Explanation:
A closed chain refers to a position where the most distal aspects of a given extremity are fixed to the earth or another solid object. This fixed position alters the movement of the joints and surrounding musculature up the chain.
As of January 1, 2010 what is a legal requirement for a person born on or after january 1, 1988 to operate a vessel powered by a motor of 10 horsepower or greater in Florida waters
Florida law requirements are as follow.
What are the Florida law requirements?Florida law requires a person born on or after January 1, 1988, to use a vessel powered by a motor of 10 horsepower or more prominent on Florida waters to meet the following:
Successful realisation of an approved boating safety course.Possession of a Boating Safety Education Identification Card issued by the FWC.Thus, a legal requirement for an individual born on or after January 1, 1988, to use a container powered by a motor of 10 horsepower or more wonderful on Florida waters is possession of a Boating Safety Education Identification Card issued by the Florida Fish and Wildlife Conservation Commission (FWC) after the triumphant completion of an approved boating safety course.Learn more about the Florida Fish and Wildlife Conservation Commission at
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Two populations are not yet reproductively isolated if interbreeding results in ____ .
A. stronger offspring
B. weaker offspring
C. living offspring
D. fertile offspring
Answer:
fertile offspring
Explanation:
because of species Ideology
Crops such as corn along
with plants such as
pansies, marigolds, and
cucumbers fall into which
of these categories of
angiosperms?
According to the research, pansies, marigolds, and cucumbers fall into dicots angiosperms category.
What are angiosperms?They refer to vascular land plants that produce seeds, flowers, and fruits.
It is classified according to the number of leaves, when the seed germinates and two cotyledons are produced they are categorized as dicots.
Therefore, we can conclude that according to the research, pansies, marigolds, and cucumbers fall into dicots angiosperms category.
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Answer: Annual plants.
Explanation: