¿es ideal el cuerpo humano?
El cuerpo humano es una verdadera máquina, que normalmente se encuentra calibrada a la perfección para la conservación de la “homeostasis” o “balance” a través del trabajo conjunto de numerosos sistemas: un sistema nervioso, con el cerebro y la médula espinal como sus piezas principales, que envían señales a otros
¿Qué mejoras harias que funcionen mejor
Descansa bien y levántate temprano. ...
Planifica tu jornada. ...
Mantén las distracciones al mínimo. ...
Trabaja en bloques de trabajo con descansos. ... :) :(
Ordena tu lugar de trabajo. ...
Dedícate a una cosa a la vez. ...
Automatiza todo lo que puedas.
Which of these groups is the smallest level of classification?
A. Class
B. Order
C. Phylum
D. Family
HURRYYYYYYY PLEASEEEE
Curate a collection of diagrams and photographs that illustrate the structure and makeup of DNA, as well as its location in the cell. Then, research a method of using isopropyl alcohol and a liquid detergent in order to extract and observe your own DNA. Photograph your results and add the labeled photographs to your digital DNA gallery.
The isopropyl method of DNA extraction is a lab based technique hence the pictures and results cannot be provided here. The DNA structure consists of a sugar phosphate backbone and a nucleotide base.
The double helix shape of DNA, a two-stranded molecule that seems to be twisted, is what differentiates it from other molecules. Each of the two strands is made up of a phosphate molecule and a lengthy series of nucleotides. a five-carbon sugar molecule known as deoxyribose. a region rich in nitrogen.The majority of DNA is found in the cell nucleus (where it is known as nuclear DNA), but there is also a tiny quantity of DNA in the mitochondria (where it is called mitochondrial DNA or mtDNA).Cellular organelles called mitochondria transform the energy from food into a form that cells can utilize.
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EXPERIMENT 1: PUNNETT SQUARE CROSSES Part 1: Post-Lab Questions 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 colorY = yellow ⇒ dominant alleley = blue ⇒ recessive alleleWe will assume complete dominance, meaning that with at least one dominant allele in the genotype, the expressed color is 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 , are as follows
Gametes
a. YY Ss ⇒ YS, YS, Ys, Ys
b. Yy Ss ⇒ YS, Ys, yS, ys
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Given the following crosses give the outcome. What can be the blood types of their children.
Type AB blood x type 0 blood
Answer:
For this question, you have to draw a punnet square
Explanation:
A B
i Ai Bi
i Ai Bi
For AB blood type, one parent can give either an A or a B. For the other parent because they are 0 blood type that means that they are negative for both factors.
For someone who would be A, they could be AA or Ai( but that is irrelevant for this question)
The i reffers to no antigen markers, it is kind of just a placeholder. You could have written (O,O) instead
is water losing through transpiration harmful or benefical for plant
Answer:
Beneficial. Read below
Explanation:
Water naturally does evaporate from the leaves. When it does, it makes a sort of suction in the 'pipes' of the plant. Think of it like when you drink from a cup with a straw. You take juice out from the straw by sucking it but that makes the juice still in the cup go up to replace that lost juice. This is how plants absorb water from the roots. If transpiration didn't happen, plants wouldn't be able to absorb water apart from osmosis but that would be too slow.
picture has the question thank you !
Answer:
B
C
D
A
Explanation:
yw :)
Answer:
urea = principal nitrogenous waste in humans (b)
nephron = the basic functional unit of the kidney
solute = a dissolved substance
ureter = a vessel that carries urine from the kidney to the bladder
hope this helps!! :)
Which type of carbohydrate polymer is used for structural support in the cell wall within plants ?
Answer:
cellulose is the type of carbohydrates polymer used for the structural support in crll wall within plants
Question 1
Write words or phrases that take the word nature down to three levels of abstraction.
phrases words refer to intangible qualities, ideas, and concepts. These words indicate things we know only through our intellect, like "truth," "honor," "kindness," and "grace."
what are the effects of anaemia
Answer:
Irregular heartbeat. Heart Failure. Fatal. The body does not get "oxygen-rich" blood. May feel tired or weak. Shortness of breath, dizziness, headaches. Blood loss, lack of red blood cell production, and high rates of red blood cell destruction
Explanation:
When you're anemic your heart pumps more blood to make up for the lack of oxygen in the blood. This can lead to an enlarged heart or heart failure.
How would a system of naming help Darwin create a unifying theory of evolution?
1. Protozoa are: A multicellular organisms B one-celled animals C members of the group protoctista D unicellular plants 2. Micro-organisms include: A bacteria and some fungi B viruses C protozoa D all of the above 3. Viruses are sometimes not considered as living organisms because: A they do not have any of the organelles found in cells they are incapable of independent reproduction B C they cannot carry out any metabolic processes. D all of the above
Answer:
1,unicellular plants 2,All of the above
Describe the features of the respiratory epithelium and explain in terms of physiology how they protect the lung.
The essential roles including barrier protection, fluid balance, the release of particulate, initiation of immune responses, mucus and surfactant exhibit, and repair following injury.
What is respiration?Inhalation:
On inhalation, the pressure in the alveoli is high, hence the Oxygen diffuses to the nearby blood through the membrane.
Exhalation:
It is the process in which a person releases the air collected in the lung. During exhalation, the pressure in the alveoli is low, hence the carbon dioxide present in the blood is diffused out into the alveoli.
Therefore, the expandable structure of alveoli helps the respiratory system to follow its function.
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Which of the following is not a condition required for all thunderstorms to
form?
A. Moisture in the lower- to mid-levels of the atmosphere
B. A rotating updraft, or supercell
C. Unstable air
D. A lifting force
When is your breathing likely to speed up?
A. When your heart cells need more carbon dioxide
B. When your white blood cells increase
C. When your blood cells have too
much oxygen
D. When your cells need more energy
how to make I love my pet animal in negative sentence
Answer:
I never love my pet.
Explanation:
Hope it helped!
Answer:
I don't love my pet . easy
what type of microscope creates a two dimensional image
this molecule is split into oxygen
protons, and electrons during light
dependent reactions is called?
Answer:
Oxygen and hydrogen ions are also formed from the splitting of water. To replace the electron in the reaction center, a molecule of water is split. This splitting releases an electron and results in the formation of oxygen (O2) and hydrogen ions (H+) in the thylakoid space.
the picture holds the question
The experiment done in Miller-Urey experiment describes that the organic molecule have always existed as well as life on Earth could have originated from inorganic material. The correct options are A and D.
What are organic molecules?An organic molecule is a complex molecule that is primarily made of carbon atoms bonded with other elements and/or other carbon atoms. All living things on Earth are composed of organic molecules.
The experiment done in Miller-Urey experiment describes that the organic molecule have always existed as well as life on Earth could have originated from inorganic material.
Thus, the correct options are A and D.
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Look at least two molecules diagrams and think about the features of compounds.
Answer:
---> are isomers of each other
---> have same molecular formula
---> are both hydrocarbons
---> have same number of each kind of atom
Explanation:
Isomers with the same molecular formula. The molecular formula gives a list of the type and quantity of each element in a molecule.
In other words, they are two different molecules with the same type and amount of atoms. The difference is that their structures are different. That being said, the structural formula of the molecules would not be the same. Hydrocarbons are molecules that only consist of carbon (C) and hydrogen (H) atoms.
how do blood vessels function to maintain body temperature on hot and cold day
Answer:
Vasodilatation
Explanation:
The blood vessels under your skin get wider. This increases blood flow to your skin where it is cooler — away from your warm inner body. This lets your body release heat through heat radiation.
Answer:
on a hot day they vasodillate causing a lot of blood to flow near the skin surface thus losing heat by convection while voice versa during cold Temp
how many ATP molecules are produced from the breakdown of fatty acids
is water losing through transpiration harmful or benefical for plant
What advantage do wet areas have over rock layers in terms of fossilization?
They produce more oxygen used to harden the specimen.
They can preserve soft tissue with more details.
They decompose materials at a faster rate.
They are able to preserve very large remains.
Wet areas have an advantage over rock layers in terms of fossilization. They produce more oxygen used to harden the specimen.
Only in river valleys does deposition on land occur often. Sediments built up on river floodplains frequently include fossils. Strong currents and waves can be present in some ocean regions that are home to animal life.Hence, there are evidences that wet areas have an advantage over rock layers in terms of fossilization due to presence of abundant water.Water seeps into the remnants, carrying minerals dissolved in it into the crevices where they crystallize as a result of oxidization. The bones and the sedimentary rock that surrounds them both become harder as a result of these crystalline minerals.learn more about fossilization here: https://brainly.com/question/14529748
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Valentina is at the beach and decides to head out into the water for a swim. As she swims away from shore, she gets caught in a rip current. What should Valentina do? Select 3 options.
-remain calm
-move to the center of the current
-swim with the current
-float or tread water if she cannot escape
-draw attention to herself for help
Answer:
The person above me is WRONG
Explanation:
The answer is Remain calm, float or tread water if she cannot escape, and draw attention to herself for help. (1, 4, 5) Please give me Brainliest.
A section of DNA is shown.
3'–TCG ATA TCC–5'
Which sequence best shows the result of transcription for the section of DNA?
A. AGC TAT AGG
B. TCG ATA TCC
C. UCG AUA UCC
D. AGC UAU AGG
HELP PLEASE I WILL GIVE BRAINLIEST AND THANKS
True breeding domesticated Hens with white feathers and large, single head combs mate with roosters that are true-breeding for dark feathers and small combs. The offspring all resemble their mothers (hens) for these two traits.
a. Which alleles of each trait are dominant, and which are recessive?
b. if the F1 are crossed with each other, what percentage of the F2 would be expected to have dark feathers and long single combs?
(a) The alleles of white feathers and that of single-head combs are dominant while that of the dark feathers and small combs are recessive.
(b) 1/16 or 6.25%
Dihybrid crossingSince all the offspring resemble their mother, it means the alleles that make up the traits of the mother are dominant over that of the father.
Assuming that:
Feathers color = F/f
Comb type = C/c
Genotype of mother = FFCC
Genotype of father = ffcc
FFCC x ffcc
FfCc
Crossing: FfCc x FfCc
Progeny
F_C_ = 9/16
ffC_ = 3/16
F_cc = 3/16
ffcc = 1/16
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Select the correct answer from each drop-down menu.
Both molecules and compounds are made up of
orm
B. Two or more atoms joined together by shared electrons
8. Substances made from two or more different elements are
Reset
Next
Answer:
We know that when two or more than two atoms join together they form an element.
When two or more than two elements join together, they form a compound.
When two or more atoms of an element join together then a molecule is formed.
When two types of atoms or elements join together then a compound is formed.
Hence, the complete statement would be :
Explanation:
We know that when two or more than two atoms join together they form an element.
When two or more than two elements join together, they form a compound.
When two or more atoms of an element join together then a molecule is formed.
When two types of atoms or elements join together then a compound is formed.
Hence, the complete statement would be :
Both molecules and compound area made up of atoms . Two or more atoms joined together by shared electrons form element.Substance made from two or more than two different elements are compounds.
An atom charged -3 has atomic number 23 and atomic mass 32 what is the number of electrons of this atom
An atom charged -3 has the atomic number 23 and an atomic mass of 32, the number of electrons of this atom are 20.
What is an Atomic number?An atomic number may be defined as the number of a chemical element in the periodic table, in which the elements are positioned in order of expanding the number of protons in the epicenter known as the nucleus.
In this question, the number of electrons is 20, because the number of electrons in an atom is always equal to the atomic number of that atom, which is 23 here.
But, an atom charged -3, so, 23-3 = 20. If an atom is charged negative, the number of electrons is determined by subtracting it with an atomic number, while if it is charged positive, the number of electrons is determined by adding it with an atomic number.
Therefore, it is well described above.
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Identify three bodily functions that the nervous system helps to regulate to help maintain homeostasis.
Three bodily functions that the nervous system helps to regulate to help maintain homeostasis include the release of epinephrine, thyroxine and acetylcholine.
What is Homeostasis?Homeostasis refers to the state of internal equilibrium of a biological system regarding its association with the surrounding environment.
Hormones are chemical messenger released by the nervous system that help to maintain the homeostasis.
Epinephrine is a hormone that helps the body maintain homeostasis by fighting against allergic reactions.
Moreover, thyroxine is another key messenger that modulates energy levels and growth.
In conclusion, three bodily functions that the nervous system helps to regulate to help maintain homeostasis include the release of epinephrine, thyroxine and acetylcholine.
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Which is true of Pluto?
© A. Pluto is not always the planet farthest from the sun.
® B. Pluto does not revolve around the sun.
C C. Pluto revolves around the sun but does not rotate.
• D. Pluto's orbit is almost perfectly round.
