Answer:
answer is A.) The population comes to be dominated by smaller, slower- growing individuals
A suspension of yeast cells is being grown under anaerobic conditions such that glucose is degraded to ethanol and carbon dioxide. To follow this process by monitoring the release of CO214, at which positions in the glucose molecule would the C14 label need to be incorporated
Answer:
carbons 3 and 4
Explanation:
Alcoholic fermentation is an anaerobic (non-oxygen-requiring) pathway capable of converting one mole of glucose (C6H12O6) into two moles of ethanol (C2H5OH) and two moles of carbon dioxide (CO2), producing during this process two moles of ATP. The overall chemical reaction is as follow: C6H12O6 (glucose) >> 2 C2H5OH (ethanol) + 2 CO2. During this process (fermentation), energy is obtained from the glycolysis process by which each glucose molecule is broken down into two pyruvate molecules (2 CH3COCOO−). Pyruvic acid is an organic acid that ionizes to produce a hydrogen ion and a molecule of pyruvate. Subsequently, this pyruvate is then converted into ethanol and CO2, generating NAD+, i.e., the oxidized form of nicotinamide adenine dinucleotide or NAD, which is required for glycolysis (and therefore to produce ATP). Moreover, dismutation refers to the redox reaction by which one compound with an intermediate oxidation state converts into two compounds. In consequence, the CO2 generated during fermentation arises from the dismutation of pyruvic acid. During this process, the major source of CO2 is carbon 3 (C3) and carbon 4 (C4) of the glucose as a result of the dismutation of pyruvate, and thereby these positions in the glucose molecule would the C14 label need to be incorporated.
How are meiosis and mitosis different?
Answer:
b. only meiosis results in a reduction in chromosome number
Explanation:
A body of fresh water is shown below.
Which point in this body of water is most likely to have no plants growing?
A. Point C
B. Point D
C. Point A
D. Point B
Answer:
B. Point D
Explanation:
I just took the quiz
In the given image, on point D, it is not possible to have any plant. The correct option is B.
What are the requirements of plants to grow?To grow plants require enough sunlight, carbon dioxide and water. By using all these, plant perform photosynthesis by which it can survive.
As point D in the given image has no light sources, as sunlight cannot penetrate deep into the water, it is impossible to have growing plants here.
Thus, the correct option is B.
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Which of the following regarding blood vessels is not true?
Group of answer choices
arteries have valves to jprevent backflow
Arteries have thick, elastic walls to accommodate the high pressure of blood pumped from the heart
In the thinner-walled veins, blood flows back to the heart mainly as a result of muscle action
Arteries and veins have an endothelium, smooth muscle, and connective tissue
Answer:
2
Explanation:
aritieries have thick,elastic walls to accommodate the high pressure of blood pumped from the heart
A scientist is studying some developing eggs from an ocean sample. The early embryos have divided only a few times, and all cells look identical. When the scientist carefully removes half the cells from an embryo, both clumps of cells are able to complete development, forming twins. The eggs can be identified as cnidarians. crustaceans. protostomes. deuterostomes. echinoderms.
Answer:
The correct answer is - deuterostomes.
Explanation:
Duetorstomes eggs ,During embryonic development the zygote undergoes cleavage. Cleavage results is slitting into multiple cells where ease cell has the ability to develop into a complete embryo when isolated.
Who was Dr. Joseph Bell?
Answer:
Sherlock Holmes
Explanation:
He was the inspiration. Not the actual Holmes.
Answer:
Joseph Bell (2 December 1837 – 4 October 1911) was a Scottish surgeon and lecturer at the medical school of the University of Edinburgh in the 19th century.
explain the structure of molar
Answer:
Molars are the biggest of all the teeth. They have a large, flat surface with ridges that allow them to chew food and grind it up. Adults have 12 permanent molars — six on the bottom and top jaw, and children have eight primary molars.
Hope it works!!!!
Hola, necesito ayuda con este ejercicio. Regalo 70 puntos, 5 estrellas y corazón.
Respuesta corta: Produciendo un sentimiento de satisfacción.
Explanation
En el texto se hace referencia a una investigación para analizar la relación entre las redes sociales y el cerebro de los adolescentes. Para ello los investigadores utilizaron imágenes magnéticas del cerebros de los 32 adolescentes estudiados. Una vez terminaron el estudio se dan cuenta que "una estructura del cerebro, llamada núcleo accumbens, se activa más cuantos más likes tuviera una imagen". Además, el autor del texto agrega que "Esto es interesante si se tiene en cuenta que este órgano nervioso es el responsable de que experimentemos momentos de placer intensos al ganar un premio, comer helado, etc". De acuerdo a lo anterior se puede interpretar que las redes sociales influyen en el cerebro de los adolescentes debido a que produce en ellos un sentimiento de satisfacción o reconocimiento a recibir "likes" de otras personas. Además, este sentimiento se puede interpretar como aprobación por parte de las demás personas.
identifying earths four spheres
match each of earths spheres
Answer:
cryosphere → glaciers, ice caps, ice bergs
atmosphere → air surrounding earth
biosphere → all of Earth's living things
geosphere → Earth's interior, rocks, minerals, and landforms
hydrosphere → oceans, lakes, rivers, streams, and groundwater
Explanation:
The above are properly matched.
Cryosphere is known as part of the earth were water is in solid form. This has to do with glaciers, ice, ice bergs, etc.
Atmosphere has to do with the part of the earth that is gaseous. This has to do with the air found on earth.
Biosphere is the living part of the earth. All things are found in the biosphere.
Geosphere is known to be earth itself which is made up of the landforms, rocks, minerals, earth's interior, etc.
Hydrosphere has to do with the liquid part of the earth. It has to do with the water bodies.
What is the probability of the parents having a daughter?
Answer:
1/ 2
Explanation:
since the parents can have only a son or a daughter
the total number of outcomes = 2
and favorable outcome = 1
probability of an event = no. of favorable Outcomes/ total number of Outcomes.
= 1/ 2
ethyl methane sulfonate is a chemical mutagen that modifies bases in DNA this agent causes c to be mutated to
Ethyl methane sulfonate is a chemical mutagen that modifies bases in DNA. This agent causes C to be mutated to T
Mass of the moon is 7.4x10^22 kg and its radius is 1740km, Calculate the value of acceleration due to gravity on the surface of the moon. *
Answer:
The gravitational acceleration in the surface of the moon is 1.63 m/s^2
Explanation:
The gravitational acceleration at a distance R of an object of mass M, is given by:
g = G*M/R^2
Where:
G is the gravitational constant.
G = 6.67*10^(-11) m^3/(kg*s^2)
We could think that all the mass of the moon is at its center, then at the surface of the moon, the distance will be equal to the radius of the moon, thus:
R = 1740km
But we want to work with meters, so remember that:
1km = 1000m
then:
1740km = (1740)*1000m = 1740000m
R = 1740000m
And the mass is just:
M = 7.4x10^22 kg
If we input all that in the gravitational acceleration equation, we get:
g = (6.67*10^(-11) m^3/(kg*s^2))*(7.4x10^22 kg)/( 1740000m)^2
g = 1.63 m/s^2
The gravitational acceleration in the surface of the moon is 1.63 m/s^2
What is the difference between cellular respiration and gaseous exchange
Answer:
Gas exchange is the intake of oxygen and the excretion of carbon dioxide at the lung surface. Oxygen moves into the blood and carbon dioxide moves out of the blood. Cell respiration is the process that releases energy from the food
The difference between a pH of 5 and a pH of 8 is
Group of answer choices
A) 3x
B) 30x
C) 100x
D) 1,000x
Answer:
The correct answer is - D) 1000x.
Explanation:
pH is a logarithmic scale, 1 reading change leads to the results in ten-fold in the H+ concentration in acidity/basicity. The more H + ions found in solution, the more acidic the substance is as acids donate H + ions.
You can calculate the concentration of H + from the pH and the equation
p H = − log [ H + ]
arrange again
[ H + ] = 10 − p H
So for a pH of 8, we get [ H + ] = 10 ^− 8
For a pH of 5, we get [ H + ] = 10^ − 5
10 ^−5 /10 ^− 8= 10 ^3
= 1000
The video compares the key similarities and differences between mitosis and meiosis. Determine which events occur in mitosis, meiosis, or in both mitosis and meiosis. Write each event to the appropriate category. a. Chromosomes duplicate during interphase b. The first division separates homologous pairs; the second division separates sister chromatids c. A single division occurs, separating sister chromatids Homologous chromosomes pair up and form chiasmata d. Daughter cells contain recombinant chromosomes e. Process starts with a diploid cell Homologous pairs of chromosomes line up on the metaphase plate f. End result is four haploid cells that are genetically different from each other and the parent cell g. Duplicated chromosomes line up Individually on the metaphase plate in a diploid cel h. End result is two diploid cells that are genetically identical to each other and the parent cell Mitosis Melosis Both mitosis and meiosis
Answer:
Mitosis:
A single division occurs, separating sister chromatids
End result is two diploid cells that are genetically identical to each other and the parent cell
Meiosis:
The first division separates homologous pairs; the second division separates sister chromatids
Homologous chromosomes pair up and form chiasmata
Homologous pairs of chromosomes line up on the metaphase plate
Daughter cells contain recombinant chromosomes
End result is four haploid cells that are genetically different from each other and the parent cell
Mitosis and Meiosis:
Chromosomes duplicate during interphase
Process starts with a diploid cell
Duplicated chromosomes line up Individually on the metaphase plate in a diploid cell
Explanation:
Mitosis is the division of vegetative cells while meiosis involves the division of sex cells. Both divisions start with diploid parental cells but while the daughter cells in mitosis are also diploid, those of meiosis are haploid. This is why mitosis is referred to as equational division while meiosis is known as reductional division.
A cell that will undergo mitosis or meiosis would first have its genetic materials duplicated during interphase in addition to the synthesis of other important biochemicals such as proteins. Mitosis involves just a single division of the sister chromatids with two genetically identical daughter cells who are also clones of the parent cells resulting.
Meiosis, on the other hand, involves two divisions - the first one happens to separate homologous chromosome pairs while the second division separates sister chromatids just like in mitosis. During the early stage of meiosis, homologous chromosomes synapsed through the formation of a synaptonemal complex to form tetrads. Thereafter, synapsed chromosomes exchange chromosomal segments at a point known as chiasmata. All these happen at the prophase stage of meiosis I. The paired homologous chromosomes are then lined up at metaphase where they are engaged by the spindle fibers.
Meiosis II and mitosis are more or less the same with the chromosomes condensing at the prophase and the formation of metaphase plates at the metaphase. Sister chromatids are pulled apart and they migrate to the opposite poles at the anaphase and telophase.
g An Hfr strain is produced when Select one: A. an F episome is transferred to a new cell. B. an F episome leaves the E. coli chromosome. C. an F episome leaves the host chromosome and removes some of the host chromosome. D. an F episome integrates into the E. coli chromosom
Answer:
A. an F episome is transferred to a new cell.
Explanation:
Hfr strains arise from the integration of the plasmid into the bacterial cell in one of several ways such as the recombination of events. Most commonly are formed by the UV-induced integration of E coil F factor. It tries to transfer a copy of the F factors as well the entire chromosome to the recipient bacterium.what is the minimum weight that requires 2 people to lift a dog
12. What would be the other strand of DNA?
-A T C C G A A GTC C GA G-
Answer:
TAGGCTTCAGGCTC
Explanation:
The complementary base of Adenine is Thymine in a DNA strand but it is Uracil if it's a Mrna strand
then the complementary base of cytosine is therefore guanine
Chemical digestion involves condensation reactions.
O True
O False
False
Although I am answering based on my recollection, I am sorry if I am wrong.
In working with Drosphilia it is common to use a balancer stock to maintain mutations of interest. The balancer chromosomes are generally carrying multiple inversions on them. What effect would the inversions have on meiosis
Answer:
Fusion or pairing does not occur.
Explanation:
Inversions mutation leads to lowered fertility due to production of unbalanced gametes in the meiosis cell division. Chromosome inversions have no effect on mitosis, but they has affect meiosis because inversions changes the gametes which is only present in meiosis. If an inversion present is in the heterozygous condition, pairing of chromosomes cannot occur in a simple linear fashion due to change of sizes. But if the inverted chromosome segment has the proper size so it can paired with each other.
How the aging is related with the methylation? The methylation increase or decreased ?
Explain the relationship of the structure of cell membrane molecules to the function of the cell membrane overall. You must discuss the structure/function relationship of at least 3 different molecules that compose the cell membrane.
Select ALL statements that correctly describe a function of the Respiratory System, or describe a process of Respiration.
a. Moves air in and out of the body.
b. Warms and humidifies the air.
c. Regulates the cellular compositon of the blood.
d. Filters the air.
e. Exchanges gases with the blood.
f. Occurs in the Lung.
g. All of the above.
Answer:
should be G) all of the above
Explanation:
health class and quick double check to a reliable source
The correct option is, (g) All of the above.
What are the 4 main functions of the respiratory system?Enables you to speak and smell.Raises the temperature of the air to that of your body and adds moisture to it to the proper degree of humidity.Provides your body's cells with oxygen.When you exhale, waste gases from your body, including carbon dioxide, are removed.What describes the function of the respiratory system?We can breathe thanks to our respiratory system and lungs. They expel carbon dioxide and inspire oxygen into our bodies, a process known as inspiration or inhalation (called expiration, or exhalation). The process of breathing involves the exchange of oxygen and carbon dioxide.Which of the following performs the function of respiration?The network of organs in the human respiratory system is in charge of absorbing oxygen and exhaling carbon dioxide. The lungs, which perform this gas exchange as we breathe, are its main organs. All of the body's cells are supplied with oxygen-rich blood by the circulatory system and the lungs.Learn more about respiration here:
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What is the answer with explaining
Answer:
Man (dimples and freckles) - FfDd
Woman (no dimples and no freckles) - ffdd
Child (no dimples and no freckles) - ffdd
Explanation:
According to this question, the possession of freckles (F) and dimples (D) are the dominant traits. The union of a man with dimples and freckles and a woman with no dimples and freckles (ffdd) gave rise to a child that has no dimples or freckles (ffdd).
Since the child has a recessive 'ffdd' genotype, it means that the father will likely have a heterozygous genotype (FfDd). Therefore, the genotypes of the three persons involved are;
- Man (dimples and freckles) - FfDd
- Woman (no dimples and no freckles) - ffdd
- Child (no dimples and no freckles) - ffdd
Which is a component of the biosphere?
bacteria
argon
mountains
D.
permafrost
Reset
Next
Answer:
bacteria
Explanation:
why is it important to record all data and procedures in an experiment?
Answer:
Answer:important to record all data and procedures because if we list that data then we can see that which we record
hope this will help you
Answer:
Good record keeping can help user to track errors or refine an experiment.
Records can be used to audit or to check data integrity
1. What are the three "common characteristics” of model organisms?
Answer:
they need food for survival
If there is an increase in stimulation by the sympathetic nervous system
May i know the complete sentence?
The area is the brain the controls, temperature, metabolism and water/electrolyte balance is called?
Answer:
The Hypothalamus
Answer:
Hypothalamus
Explanation:
what similes best describes how your mind learns and remember
Answer:
The mind is like a: filing cabinet.
Explanation:
