(5) suppose that you can barely resolve two red dots because of diffraction by the pupil of your eye. if someone increases the general illumination around you (for example by turning on a bright light in a room) so that your pupil decreases in diameter, does the resolvability of the dots improve or diminish? explain. note: assume that the resolvability of the dots is limited only by diffraction.
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The resolvability of the dots will diminish. This is because the smaller the pupil, the larger the angular spread of light entering the eye. This means that the diffraction pattern of each dot will be larger, and the two dots will be more likely to overlap.
The following equation can be used to calculate the angular spread of light entering the eye:
θ = 1.22 λ / d
where:
θ is the angular spread of light
λ is the wavelength of light
d is the diameter of the pupil
As you can see, the angular spread of light is inversely proportional to the diameter of the pupil. So, if the pupil decreases in diameter, the angular spread of light will increase.
This means that the diffraction pattern of each dot will be larger, and the two dots will be more likely to overlap. This will make it more difficult to resolve the two dots.
In practice, the resolvability of the dots is limited by a number of factors, including the wavelength of light, the diameter of the pupil, and the quality of the optical system. However, diffraction is the primary factor that limits resolvability.
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african cheetahs, which suffered a dramatic drop in population, rebounded in number to create a population of unusually similar genetic animals. this is called
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After a sharp decline in population, African cheetahs grew again, creating a population of cats with strikingly similar genetic makeup. this is called population bottleneck.
A population bottleneck is a significant decline in the number of a population as a result of human activity, such as targeted, widespread violence or intentional culling, and human population planning, as well as environmental catastrophes such as famines, earthquakes, floods, fires, disease, and droughts. Such occurrences can lessen the genetic diversity in a population's gene pool, leaving just a smaller population means one with less genetic diversity is to transmit genes to future generations of kids through sexual reproduction. Genetic diversity is still lower and only rises when there is gene flow from another population or very slowly as time passes and random mutations take place.
The population becomes less resilient as a result, and it becomes less able to cope with and withstand certain environmental changes, like a change in the climate or a change in the resources that are available. In contrast, if those who make it through the bottleneck are the genetically fittest people, the frequency of the fitter genes will increase within the gene pool even if the size of the pool would decrease.
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For each statement below, indicate whether it is True or False.
1. Breaking the hydrogen bond between 2 water molecules is called dissociation.
2. When water dissociates, an oxygen atom separates from the rest of the molecule.
3. The hydroxide ion has an overall charge of negative one.
4. A hydrogen ion is the same as a proton.
5. When a hydrogen ion separates from a water molecule, it usually combines with another water molecule to form a hydronium ion.
6. A hydronium ion has the formula H2O+.
7. In pure water, at 25OC, about 10% of the water molecules are dissociated at any given time.
8. In pure water, the concentration of hydrogen ions always equals the concentration of hydroxide ions.
9. In pure water, the concentration of hydrogen ions is 1 x 107 molar.
10. Water dissociates into oppositely charged ions.
Answers
2 - False
3 - True
4 - True
5 - True
6 - False, H3O+
7 - False
8 - True
9 - False, 1x10^-7
10 - True
The option 1 is False, 2 is False, 3 is True, 4 is True, 5 is True, 6 is False,7 is False, 8 is True, 9 is False, 10 is True about the hydrogen bond.
What is hydrogen bond ?It is defined as the bond formed between an atom of hydrogen and a pair of other atoms with high electronegativity.
It is a weak bond than ionic bond or covalent bond, but it is stronger than van der Waals force of attraction.
There are two types of hydrogen bandings such as intramolecular and intermolecular Hydrogen Bonding
Intramolecular Hydrogen Bond formed with in a single molecule, where two functional groups of a molecule form hydrogen bonds with each other.
For this type of bonding the hydrogen donor and hydrogen acceptor must be present.
For example Ethylene glycol (C₂H₄(OH)₂).
An intermolecular hydrogen bond is formed between two or more separate molecules. For example Water (H₂O), Ethanol (C₂H₅OH)
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voluntary muscles that work in pairs and move bones?
Answers
Answer:
Muscular systems
The muscular system supports our bones and movement so we can get around the world, and do nice things like hand gestures, or poses, anything, really.
The quadriceps are also muscles that work in pairs.
Hope this helps! ♣
specificity of an antibody is due to the specificity of an antibody is due to the variable portions of the h and l chains. the constant portions of the h and l chains. the l chains. the h chains. its valence.
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specificity of an antibody is due to the variable portions of the h and l chains.
Proteins called antibodies serve as your body's defense against foreign substances. Your immune system creates antibody, which attach to these foreign molecules and transport them out of your body. Immunoglobulin is a different term for antibody. Two heavy chains (green) and two light chains (yellow) are linked by disulfide bonds to form an immunoglobulin molecule. Each heavy chain is (more...) Antibodies include two different kinds of light chains, known as lambda and kappa. There are either chains or chains in a certain immunoglobulin, never one of each.
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Before complex development of a fetus can begin, implantation into the uterine wall must occur. What gets implanted in the uterine wall?
A.
a solid ball of undifferentiated cells called a morula
B.
a zygote consisting of only a single cell
C.
a blastocyst containing some differentiated cells
D.
an egg that has not yet been fertilized by a sperm
Answers
Answer
implantation consists of three stages: (a) the blastocyst contacts the implantation site of the endometrium (apposition); (b) trophoblast cells of the blastocyst attach to the receptive endometrial epithelium (adhesion), and (c) invasive trophoblast cells cross the endometrial epithelial basement membrane and invade ..
9. Which of the following shows the correct sequence of the cell cycle
And 8,9,10 answers in the photo
Answers
Answer: 8b, 9c, 10a
Explanation:
not too sure about 8 but i think other 2 are correct
how the exposure to penicillin affects the survival of some bacteria in the population
Answers
Answer:
When exposed to penicillin, the frequency of resistant bacteria will increase as those that are resistant survive and reproduce. — The resistant bacteria will survive and they will produce offspring that are resistant
Explanation:
pls mark brainliest
"Blending" genes is associated with:
O Complete Dominance
O Blood Typing
O Incomplete Dominance
O Codominance
Answers
Answer:
a
Explanation:
The "blending" of genes is associated with incomplete dominance.
Incomplete dominance occurs when neither of the two alleles in a gene pair is completely dominant over the other.
Instead, the phenotype of the heterozygous individual is an intermediate blend or mixture of the phenotypes associated with each allele. In other words, the traits from both alleles are expressed in a blended or intermediate manner.
For example, in a cross between a red-flowered plant (RR) and a white-flowered plant (WW), if incomplete dominance is present, the resulting offspring (RW) may have pink-colored flowers, which represent a blend of the red and white traits.
Thus, the answer is incomplete dominance.
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Is there any difference between breathing respiration
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Answer:
No there is no difference between breathing and respiration
What is a likely consequence of preventing prescribed burns to forest ecosystems? a. natural wildfires will burn longer and hotter when they occur because there is more underbrush and fuel available. b. forest ecosystems will remain healthier overall, due to retention of habitats. c. home owners will be better protected against damage from natural wildfires. d. natural wildfires will occur less frequently. please select the best answer from the choices provided a b c d
Answers
Because there is more underbrush and fuel available, natural wildfires will burn longer and hotter when they occur. Without wildfires, forest ecosystems would be more susceptible to plant disease outbreaks.
How does the fire benefit the soil and the ecosystem?
Most plant nutrients become more available after being burned. Although some nutrients are managed to lose during combustion, available NH4-N and P increase significantly.
Fire clears out low-growing underbrush, cleans up the forest floor, exposes it to sunlight, and nourishes the soil. The low nutrient competition allows established trees to grow stronger and healthier. Hundreds of years ago, forests had fewer, larger, as well as healthier trees, according to history.
Therefore, natural wildfires will burn longer and hotter when they occur because there is more underbrush and fuel available.
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Answer:A
Explanation:
Please help me and no file this is due today and
will be mark brainliest What type of example is this pedigree
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1. what are the three main functions of the respiratory system (anatomical organization)?
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The three primary functions of the respiratory system are ventilation, gas exchange, and oxygen utilization.
Ventilation refers to moving air in and out of the lungs. It involves inhalation, where the air is taken in through the nose or mouth, and exhalation, where the air is expelled from the lungs. This air movement ensures a continuous supply of oxygen and carbon dioxide removal. Gas exchange occurs in the alveoli, which are tiny air sacs in the lungs. Oxygen from the inhaled air diffuses into the bloodstream, while carbon dioxide, a waste product of cellular respiration, diffuses from the bloodstream into the alveoli to be exhaled. This exchange of gases ensures the oxygenation of the blood and the removal of carbon dioxide. Once oxygen is delivered to the cells through the bloodstream, it is utilized in cellular respiration, which produces energy. Oxygen is used in the final step of this process to generate ATP, the primary energy currency of the body.
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true/false. Researchers are investigating whether people who exercise with a training partner have a greater increase, on average, in targeted exercise intensity compared with people who exercise alone. Two methods of collecting data have been proposed.
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Answer: we have to compare the effects of method I and method II.
Explanation: (ii) he population of generalization if the method I is used will be all people who are willing to determine the effect of exercising with a training partner as compared to exercising alone.
(ii) The population of generalization, if method II is used, will be all people who exercise at a community fitness center.
The 2 methods I am answering for are:
ﾷ Method I: Recruit volunteers who are willing to participate. Randomly assign each participant to exercise with a training partner or to exercise alone.
ﾷ Method II: Select a random sample of people from all the people who exercise at a community fitness center. Ask each person in the sample whether they use a training partner, and use the response to create the two groups.
What step of cell respiration produces the most ATP?
Answers
Answer:
i think the electron transport chain but dont quote me on this.
Explanation:
Match the codon to the base using the codon wheel below (read the bases from the inside out to the amino acids).
100 POINTS
Answers
The codon is a triplet of nucleotide bases in an RNA chain that code for amino acids during the process of translation.
During translation, the tRNA reads the mRNA sequence in triplet of nucleotides which is called as codon which is then used to decipher the amino acid to be added in the polypeptide chain.
As there are 20 amino acids, there is a redundancy of the codons, that is, many codons can code for one amino acid.
There is one codon that is always present at the beginning of the RNA which is called the start codon which is AUG. It initiates the translation process.
At the end of the RNA sequence is the stop codon which is UAA, UAG or UGA which bring the translation process to an end.
The codons given correspond to the following amino acids:
1. AUG - Methionine
2. GAA - Glutamic acid
3. CGG - Arginine
4. UGA - Stop codon
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I need to know the producer primary Consumer secondary Consumer herbivore carnivor and omnivore
Answers
Answer:
Producer is the plants
Explanation:
Which of the evolutionary factors are we not testing with the allelea1 program?a. Sexual Selectionb. Natural Selectionc. Mutationd. Gene Flow
Answers
Gene Flow is one of the evolutionary factors that are not testing with the allelea1 program. The correct option is D
What is evolution ?Evolution can be defined as a process that results in changes in the genetic material of a population over time. Evolution reflects the adaptations of organisms to their changing environments and can result in altered genes and new species.
Natural selection is considered the main mechanism that causes populations to evolve. However there are several other mechanisms of evolution including mutation, genetic drift and gene flow.
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why do large proteins come out of a gel filtration column faster than small ones?
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Large proteins come out of a gel filtration column faster than small ones due to their size exclusion principle. Gel filtration columns contain porous beads that create a network of different-sized pores.
Gel filtration columns separate molecules based on their size. The stationary phase consists of porous beads that form a network of different-sized pores. When a sample is applied to the column, large proteins cannot enter the smaller pores and travel around the beads, taking the path of least resistance and eluting faster.
In contrast, small proteins can enter the pores and get trapped, leading to a slower elution time. Thus, the size exclusion principle governs the differential elution rates of large and small proteins in gel filtration chromatography.
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What is the main function of structural adaptations?
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The main function of structural adaptations is to increase the organism's chances of successfully surviving. Structure-based adaptations can make it easier for living things to move around, get food, and hide from predators.
A structural adaption called camouflage aids living things in blending in with their environment.
Physical characteristics of an organism, such as the bill on a bird or the fur on a bear, are examples of structural adaptations. Behavioral adjustments make up the rest. Organisms use behavioral adaptations to help them survive. Bird migration and calls are two examples of behavioral adaptations. Evolution is the cause of adaptation.
A trait that evolved and was selected by natural selection for its current function is known as an adaptation. An organism needs adaptations in order to live and/or reproduce in its current environment.
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What is the reactant (substrate) in the reaction above?
Select all that apply.
catalase
H 2 O 2
O 2
H 2 O
plsss somebody helppp
Answers
After considering the given data we conclude that the reactant or substrate in the concerning the reaction is hydrogen peroxide (H₂O₂), that is dismantled by the enzyme catalase into water (H₂O) and oxygen (O₂).
Now regarding the given question, catalase applies the property of catalyses and initiates the deterioration of hydrogen peroxide (H₂O₂) into water (H₂O) and oxygen (O₂). The substrate or reactant in this response is hydrogen peroxide (H₂O₂).
Catalase is considered a catalyst that boosts this response without being consumed by it.
Furthermore, when catalase places a connection with hydrogen peroxide, it detaches the H₂O₂ particles into water and oxygen gas. This type of behavior is significant in different natural cycles, specially with concerning against unsafe receptive oxygen species. Now following this explanation ,we can clearly state that the reactant or substrate in this response is hydrogen peroxide (H₂O₂).
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Please help will give brainly
Answers
Answer:
4 meters
Explanation:
At what age does the coccyx fully fuse together?
Answers
BRAINLIEST AND 100 POINTS HELP ME ASAP
Examine the layers of rock. Identify and explain which layer contains the oldest fossils.
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Answer:
Explanation:
d contains the oldest fossil
Relative dating is used to determine a fossils approximate age by comparing it to similar rocks and fossils of known ages. Absolute dating is used to determine a precise age of a fossil by using radiometric dating to measure the decay of isotopes, either within the fossil or more often the rocks associated with it.
Which are advantages of using renewable resources? Choose all that apply
Answers
Answer:
Generating energy
Explanation:
that produces no greenhouse gas emissions from fossil fuels and reduces some types of air pollution.
Diversifying energy supply and reducing dependence on imported fuels
Which is not true about meiosis?
A. The chromosomes in the daughter cells are half the number from the parent cell.
B. The chromosomes in the daughter cells are the same number as a parent cell
C. The only cells that will undergo meiosis will become sperm or egg cells used for reproduction
D. The shuffling of genes happens in meiosis.
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Answer:
B. the chromosomes in the daughter cells are the same number as a parent cell
Glucose and oxygen are the ______ of photosynthesis
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Explanation:
It transforms water into the oxygen and corbon dioxide in glucoseWhere does the 2nd stage of cellular respiration take place?
Answers
Answer: In the matrix.
Explanation: The second stage of cellular respiration, the Krebs cycle, takes place in the matrix.
what is the best example of heat being transferred to one object to another
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GIVING BRAINLIEST!!!!!
Which of the following describes the location of the tropical zone?
A) Between the temperate and the polar zones
B) Closest to the equator
C) Farthest from the equator
D) Near the North Pole and South Pole
Answers
Answer: B. The tropical zone lies closest to the equator.
Explanation:
An organelle that releases energy for metabolic activity in a nerve cell is the...?
Answers
Answer:
Mitochondria
Explanation:
Mitochondria is an organelle that creates energy in the form of ATP in all living cells.