Answer:
D the hydrogen ion concentration gradient across the membrane
Explanation:
gradient created by this drives hydrogen back through the membrane, through ATP synthase
Hydrogen ions flow down a concentration gradient from the thylakoid space to the stroma through ATP synthase, releasing energy that can be used to produce ATP from ADP + Pi
ATP synthase is a mitochondrial enzyme localized in the inner membrane, where it catalyzes the synthesis of ATP from ADP and phosphate, driven by a flux of protons across a gradient generated by electron transfer from the proton chemically positive to the negative side.
At the electron transport chain, hydrogen is built up on one side of the electron transport chain and the electrons which are their way down the chain are building up on the other side. The electrons and hydrogen are attracted to each other due to their charges. These for the hydrogen flows though the gradient in the membrane to reach the elections. Once the hydrogens pass though this gradient it produces the ATP from the hydrogen
Once the hydrogens pass though this gradient it produces the ATP from the hydrogen “turning” the protein. At the end the oxygen is placed at the bottom of the electron transport chain to accept the hydrogen which makes water
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How would you explain Darwin's mechanism for evolution called "natural selection"?
In terms of natural selection what is the best description of an organism that is fit
Answer:
The organism is physically stronger than competing organisms.
Explanation:
Before harvesting your vegetables,Why is it important to check first the maturity?
Answer: The quality of vegetables does not improve after harvest so it is important to gather crops at proper maturity. At this point vegetables are at their peak for flavor and nutrition.
Explanation:
NEED HELP ASAP!!! I have to get these done before the end of the week!!!!!
“You decide to go for a walk. You walk 8km to the north in 2 hours, then you walk 3 to the south in 1 hour. What is your total velocity of the entire walk?”
Answer:
32 because it is the velocity of it
Explanation:
yes
The gene theory declares that all organisms contain coded information in __________ which dictates the form and function of organisms
The gene theory declares that all organisms contain coded information in DNA which dictates the form and function of organisms.
What does the gene theory state?Gene theory is one of the major principles of biology that explains the inheritance of traits coded by gene from parents to offspring.
This theory further explains that genes are located on chromosomes and consist of DNA, which stores them.
Therefore, the gene theory declares that all organisms contain coded information in DNA which dictates the form and function of organisms.
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The typing of human blood is determined by three alleles: A, B, and O. Alleles A and B are codominant to one another and O is recessive to both alleles, A and B.
AA/ AO – type A blood, AB – type AB blood, BB/ BO – type B blood, OO – type O blood.
A woman who is homozygous for type B blood marries a man who is heterozygous for type A.
What is the genotype ratio of their offspring?
What is the phenotype ratio of their offspring?
A female homozygous for blood type B marries a male heterozygous for blood type A, the offspring will be 75% AB and 25% Bo.
What is the genotype ratio of your offspring?AB 75% BO 25%What is the phenotypic ratio of your offspring?75% codominate AB zygotes25% B heterozygous.What is a heterozygous being?Homozygous and Heterozygous, in genetics, are individuals who have pairs of genes that are identical or different alleles. This means that while the homozygote has two identical genes alleles, with the heterozygous beings the opposite happens, since they have two different genes alleles.
With this information, we can conclude that a female homozygous for blood type B marries a male heterozygous for blood type A, the offspring will be 75% AB and 25% Bo.
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What process creates mRNA?
Q2. A student used cubes of potato to investigate the effect of surface area and volume on the rate of osmosis. The diagram shows two of the cubes of potato the student used. lem 2 cm 1 cm 1 cm Cube 1 The surface area to volume ratio of cube 1 is 6:1. Calculate the total surface area of cube 2. (a) 2 cm Cube 2 2 cm
The total surface area of the cube 2 is 24
How to calculate the total surface area of the cube?
The surface area is equal to six times the square of the length of the cube's sides. It is denoted as 6a₂, where an is the cube's side length.
As per formulae of the total surface area of a cube
A = 6a₂
Given a= 2,
A= 6.2.2= 24
Hence the answer is 24.
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Francine is studying the karyotype of a human subject in a medical study. she observes that the karyotype shows three copies of chromosome 21. all of the other chromosomes have two copies. which conclusion about the subject is supported by francine's observations?
3 copies of chromosome in karyotype shows that person has genetic disorder called down syndrome.
What do you mean by karyotype?A karyotype test examines the structure, shape, and number of chromosomes in your body. The sections of our cells that hold your genes are called chromosomes.
Instead of having one copy of chromosome 21, an egg or sperm cell may preserve both copies. If this egg or sperm is fertilized, the baby will be born with three copies of chromosome 21. This is referred to as trisomy 21. Trisomy 21 is present in around 95% of people with Down syndrome. Instead of the usual two copies of chromosome 21, each cell in the body has three copies of chromosome 21 in this kind of Down syndrome.
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9. Which of the following is a natural pesticide that's sometimes applied to organic crops?
O A. Organophosphates
OB. Nitrogen
C. Neem oil
D. Nitrate
Neem oil is a natural pesticide that's sometimes applied to organic crops because of its repellent composition.
What is natural pesticides?Natural pesticides are those pesticides that are made for their own defense by organisms such as plant, animal, bacteria. Neem has long been used for its medicinal and culinary properties.
So we can conclude that Neem oil is a natural pesticide that's sometimes applied to organic crops because of its repellent composition.
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Neem oil is a natural pesticide that is sometimes applied to organic crops
C. Neem oil
What is neem oil used for in agriculture?It is a product to control the populations of undesirable insects in agriculture, being harmless to humans and warm-blooded animals. It is fully biodegradable and does not bioaccumulate.
With this information, we can conclude that Neem oil is a natural pesticide that is sometimes applied to organic crops
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I need help with this
Three cells are placed in three solutions of different concentrations. Determine the concentration of the solutions based on the predominant
movement of water molecules through the cells.
isotonic
hypertonic
hypotonic
Solution 2
Solution 1
Solution 3
The three types of solutions and concentrations can be classified as:
Solution 1: HypertonicSolution 2: HypotonicSolution 3: IsotonicWhat is the concentration of a solution?The concentration of a solution must be expressed in quantitative units. So-called concentration units are used, which are quantitative measures of the affinity of solute that dissolves. The relative amount of a substance is known as the concentration and is expressed in different units.
In this case we can classify these solutions as :
Hypertonic solution: has higher osmotic pressure and solute concentration.Hypotonic solution: has lower osmotic pressure and solute concentration. Isotonic solution: the solute concentration and osmotic pressure are equal, thus reaching equilibrium.See more about solution at brainly.com/question/7932885
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Fruits grown in hot climates are usually less sweet than those grown in cooler temperatures
Increased respiration in the leaves and stems reduce the sugar content in the fruits of a plant because sugars produced in the leaves are used as an energy source instead of being stored in fruits.
What is fruit?
A fruit is a mature, ripened ovary, along with the contents of the ovary. The ovary is the ovule-bearing reproductive structure in the plant flower.
Cellular respiration is the process wherein nutrients (glucose) are oxidized into carbon dioxide and water with release of lots of energy. The released energy is stored in form of ATP which serves as energy currency for cells. Since high temperatures increase the rate of respiration in the plants, sugars produced in the leaves are used as an energy source instead of being stored in fruits.
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blood pressure healthiness question
Answer:
A.) circulatory, muscular, nervous
Why are plants called producers
Answer:
they make there own good which creates energy for them to survive, grow and reproduce
Microorganisms are involved in all of the following EXCEPT production of medicinal products. food production. converting nitrogen to a form useful to plants. There are no exceptions here. There are microorganisms that participate in each of these activities. pollution cleanup.
Microorganisms are involved in
a. production of medicinal products.
b.transforming atmospheric nitrogen to a form useful to plants.
c.food production.
d.pollution cleanup.
e.All of the choices are correct.
Microorganisms participate in all the processes mentioned. All of the choices are correct
Economic importance of microbesMicrobes can be beneficial as well as harmful.
Some of the beneficial importance of microbes include:
Production of medicine or medicinal products. E.g penicillin Conversion of atmospheric nitrogen to usable nitrogen forms to plants, otherwise known as nitrogen fixation.Food production. E.g yeast in the production of bread and Lactobacillus in the production of yogurts.Bioremediation of pollutants.More on the importance of microbes can be found here: https://brainly.com/question/17188351
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As increased global population beneficial or harmful for the climate????
Which structure in the diagram below is a muscle that contracts during inhalation?
The diaphragm in the diagram below is a muscle that contracts during inhalation. thus option A is correct option.
What is the role of the diaphragm?The diaphragm, located below the lungs, is the major muscle of respiration. It is a large, dome-shaped muscle that contracts rhythmically and continually, and most of the time, involuntarily.
Upon inhalation, the diaphragm contracts and flattens and the chest cavity enlarges.
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Which of the following best describes the contributions of Robert Remak to our understanding of cells?
*
a. developed the first compound microscope to view cells
b. observed the first prokaryotic cells in pond water
c. coined the term "cell" when looking at cork under the microscope
d. obeserved cell division under the microscope proving cells come from other cells
Answer:
a)A dutch father-son team named hans zacharias janssen invented the first so called compound microscope in late 16th century when they discoveted that if they put a lens at the top and bottom of a tube and looked throught lit , objects on the other and became magnified
b) leeuwenhoek the first prokaryotic cells in pond water
Charles darwin found fossils that looked like ancient versions of living species. From this evidence darwin suggested that earth was.
The fossil that was discovered by Charles Darwin goes a long way to suggest that the earth is older than 6000 years.
Who is Charles Darwin?The man Charles Darwin is the renowned proponent of the theory of evolution. According to this theory, living things all evolved from simple life forms many years ago.
The fossil that was discovered by Charles Darwin goes a long way to suggest that the earth is older than 6000 years.
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In the Japanese four o’clock flower, red flower (RR) color is incompletely dominant over white flower (rr) color; the heterozygous plants have pink flowers (Rr). What kinds of offspring can be produced if a red-flowered plant is crossed with a pink flowered plant?
What is the genotype ratio of this cross?
What is the phenotype ratio of this cross?
If a red-flowered plant is crossed with a pink flower plants, the genotype ratio would be 1:1 for RR and Rr, and 1:1 for red and pink flower phenotypes.
Monohybrid crossingRed trait has the genotype RR.
Pink trait has the genotype Rr:
Crossing both:
RR x Rr
RR Rr RR Rr
Thus, only RR (red flower) plants and Rr (pink flower) plants are produced.
Genotype ratio = 1RR : 1Rr
Phenotype ratio = 1 Red flower : 1 Pink flower
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a relationship in which one species kills and consumes another specifies is known as
Predation
It can be explained in that way or also called Predatory/prey relationships.
Parasitism is when one is benefited and the other harmed (ie leech and human)
Commensalism is when one is benefited and the other not affected (Tree frog and rainforest tree)
Mutualism is when both are benefited (Bee eats honey and Flower is pollinated).
A student mixes various molecules needed for DNA replication. When he adds DNA, replication occurs, but each DNA duplex consists of a normal DNA strand paired with numerous segments of DNA that are a few hundred nucleotides long. What has been left out of the mixture
Answer: DNA Ligase
Explanation:
During DNA replication, both the parental DNA strands are separated and act as templates for the synthesis of new strands. The formation of the new strands occurs in only 5'-3' direction and thus both the strands are synthesized in a different manner. One new strand with the template of 3'-5' direction will be synthesized continuously and is called a leading strand. The other strand with the template of 5'-3' direction will be synthesized discontinuously in the form of DNA fragments. These fragments are called Okazaki fragments and the strand is called a lagging strand. DNA ligase connects these fragments later to form a continuous lagging strand.
Therefore, DNA ligase is required for ligation of Okazaki fragments, and in absence of DNA ligase, the ligation of fragments will not occur and the newly synthesized strand will be discontinuous. However, if DNA ligase is not present in the reaction mixture, then the chances are that not all the newly synthesized DNA strands will be discontinuous. Only the DNA molecule with the lagging strand will be in the form of fragments.
Lidocaine is an anesthetic that is used to prevent the propagation of action potentials. Which compartment would lidocaine MOST likely target
Large areas of forest have been cleared for construction of subdivisions in the region encompassing Ohio, Indiana, Illinois, Michigan, and Wisconsin. How will the region's climate be affected? (4 points)
A. Deforestation does not affect climate.
B. Deforestation increases the frequency of extreme summers in tropical regions.
D. Deforestation decreases the frequency of extreme summers in tropical regions.
C. Deforestation increases the frequency of extreme summers in the Midwestern United States.
Deforestation increases the frequency of extreme summers in the Midwestern United States.
What is deforestation?Deforestation is the process whereby large forests areas are cleared without replacing the trees that were cut down.
Deforestation affects the climate of an area and leads to increased temperatures and global warming.
Therefore, Deforestation increases the frequency of extreme summers in the Midwestern United States.
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In what year did Oxford scientist Robert Brown discover the motion of small particles?
1880
1908
1987
1827
Autopsy results from people who have died of fatal familial insomnia show evidence of degeneration in the
According to the research, autopsy results from people who have died of fatal familial insomnia show evidence of degeneration in the thalamus.
What is fatal familial insomnia?It is an autosomal hereditary disease that prevents falling asleep, that is, it is an absolute inability to fall asleep or to do so in an extremely superficial way.
Its onset is abrupt and continues to progress until it causes the death of the patient and its main neuropathological manifestation is degeneration of the thalamus, which is responsible for sleep.
Therefore, we can conclude that according to the research, autopsy results from people who have died of fatal familial insomnia show evidence of degeneration in the thalamus.
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A student made a model of a cell. First, she filled a clear plastic bag with gelatin.
Then, she added a rubber ball.
What are two limitations of the student's cell model?
A. The model is not as easy to see and hold as a real cell is.
B. The model does not show that cells can contain smaller structures inside
them.
C.The model does not show how a real cell gets the energy it needs to live.
D.The model is made up of materials that are different from those found in
real cells.
Uranus was originally thought to be the star Sagittarius A*.
True
False
Answer:
I think it's true
Explanation:
I'm so sorry if that's wrong
What occurs during the mitosis stage of the cell cycle?
Answer:
The dna Seprates into two
Explanation:
also the cytoplasm divdes causing it to create two whole new cells