Two species having similar amino acids in hemoglobin implies an evolutionary relationship or conservation of functionally critical amino acids. Hemoglobin's structure consists of around 600 amino acids, where a single substitution, as seen in sickle cell anemia, can have serious health implications.
Two species having similar amino acids in the hemoglobin protein suggest evolutionary relatedness or conservation of important structural features required for the protein's function. Hemoglobin has a quaternary structure made up of two alpha and two beta chains, each consisting of about 150 amino acids, totaling around 600 in the molecule. This complexity allows hemoglobin to efficiently bind oxygen. The conservation of particular amino acids, such as the two active site histidines and glycine B6, indicates their critical role in the protein's ability to function. Moreover, the sickle cell anemia mutation demonstrates the significant impact that a single amino acid substitution can have on hemoglobin's structure and function, drastically affecting health.
Which of these is an example of an ectoparasitic relationship?
A parasitic association is one in which a species, the parasite, thrives off of another species, that is, the host, affecting it, and at certain occasion resulting in death. The parasite lives on or within the body of the host.
An ectoparasite refers to the parasite, which thrives on or in the skin, but not inside the body. For example, lice, ticks, and fleas are ectoparasites. Hence, the correct answer is option B.
N the species selection model, __________ is to macroevolution as __________ is to microevolution.
In the species selection model , Allopatric speciation is to macroevolution as sympatric speciation [ option d ] is to microevolution.
This is due to the fact that macroevolution involves large-scale changes that often result in the emergence of new species, such as allopatric speciation, in which populations are separated geographically.
Microevolution, on the other hand, involves a population's small genetic changes, often leading to different adaptations.
This could lead to sympatric speciation, in which new species form from the same ancestral species while living in the same area.
Complete question :
In the species selection model, __________ is to macroevolution as __________ is to microevolution.
A. exaptation; adaptation
B. genotype; phenotype
C. disruptive selection; balancing selection
D. allopatric speciation; sympatric speciation
Through the 1973 endangered species act, __________ u.s. species have been listed as endangered or threatened with recovery plans approved or implemented for __________ species.
An event in which large numbers of species disappear from the earth at the same time
Asexual reproduction
a. occurs when offspring are produced by and receive genetic material from both parents.
As viewed by interactionists, one way in which families reinforce and rejuvanate their bonds is through the symbolic mechanism of...
Symbolic mechanism of rituals such as family meals
Rituals are repeated set of actions and behaviours that has a significant value. Symbolic mechanism of rituals such as family meals, holidays and apple picking every fall helps families to strengthen and renew their bonds and also spreads family values and culture from one generation to the next.
What is the first thing you do with the rat in the procedure section?
The most common and immediately life-threatening injuries sustained in nuclear blasts are:
How would a change to the sequence of nucleotides in a DNA segment affects the mRNA from DNA
A change to the DNA nucleotide sequence alters the mRNA and the resulting protein. Point mutations can be synonymous, mis-sense, or non-sense, affecting protein function by altering amino acid sequences or introducing a stop codon. Mutations in germ cells can lead to hereditary changes.
A change to the sequence of nucleotides in a DNA segment affects the mRNA and consequently the protein produced. There are three types of point mutations, including: synonymous mutations which do not alter the amino acid sequence, mis-sense mutations which result in a different amino acid, and non-sense mutations which introduce a premature stop codon. These mutations can change the effects of codon bias, potentially leading to issues in translation efficiency or even ribosome stalling if the corresponding tRNA concentrations are low.
The transcribed mRNA sequence from the given DNA 5'-ATGGCCGGTTATTAAGCA-3' would be 5'-AUGGCCGGUUAUUAAGCA-3'. A single nucleotide change might not change the protein if it's synonymous, but other types of mutations can alter the function by affecting the structure of the polypeptide, the enzyme's active site, or potentially creating a truncated protein due to a stop codon.
When a mutation occurs in a germ cell, it can lead to hereditary alterations in progeny. This demonstrates the importance of DNA integrity, as it determines the correct amino acid sequence in proteins, which is vital for cellular function. Changes in the DNA sequence can impact amino acid sequence and ultimately influence the structure and function of proteins synthesized by the cell.
Once an egg cell is fertilized by sperm, the cell _______. then, as the embryo develops, it receives nourishment and eliminates wastes by transferring substances from its blood to its mother's bloo
Which will make a population have more genetic variation apex?
Answer: Mutations
Explanation:
_____ is any condition of unusual deposits of black pigment in body tissues or organs.
a. melanosis
b. ileum
c. ilium
d. leukocyte
Melanosis is a condition characterized by unusual deposits of black pigment in body tissues or organs.
Explanation:Melanosis is any condition of unusual deposits of black pigment in body tissues or organs. It can occur in various parts of the body, such as the skin, nails, or inner organs. Melanosis can be caused by an overproduction or accumulation of melanin, the pigment responsible for skin and hair color.
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What would happen if dna gyrase malfunctioned during dna replication?
Tammy is a healthy young woman whose energy requirement is 2500 kcal/day. based on this information, her daily energy requirement would be _____ kcal during her first trimester of pregnancy. 1800 2000 2500 2200
Jake designed an experiment to demonstrate interactions between Earth systems. He tied a clear plastic bag firmly around some leaves of a plant as shown below. plastic bag tied on leaves of plant After two days Jake observed some water droplets inside the plastic bag. What does Jake's experiment best demonstrate? interactions between biosphere and atmosphere interactions between hydrosphere and geosphere interactions between geosphere and biosphere interactions between atmosphere and geosphere
Answer: option (1)
Explanation: This experiment clearly represents the interaction between the atmosphere and the biosphere.
Biosphere refers to the overall life forms on earth and their relationship with other elements that are present in the lithosphere, hydrosphere of geosphere.
Here the leaves where Jake tied plastic bags re considered to be part of biosphere, which he keeps it to react with the atmosphere.
Thus the correct answer is option (1).
Meiosis i produces ____ cells, and meiosis ii produces ________ cells
a. two diploid, two haploid
b. two diploid, 4 haploid
c. two haploid, 4 haploid
d. two haploid, two haploid
e. two somatic, two gametic
Meiosis i produces two diploid cells, and meiosis ii produces _4 haploid cells
When cells divide, they do so either by Mitosis or Meiosis.
Mitosis, discovered by Walther Flemming involves the asexual type of reproduction where the cells divides once producing 2 diploid daughter cells, which are genetically identical
while
Meiosis discovered by Oscar Hertwig involves the sexual type of reproduction where the cells divide two times to produce 4 haploid daughter cells that are genetically different.
Two stages of Meiosis occurs, The meiosis I like Mitosis, produces 2 diploid daughter cells and Meiosis II produces 4 haploid daughter cells.
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Earth can be called "spaceship" because it is like a vehicle carrying humans and cargo through space.
a. True
b. False
The characteristics of an organism that helps it survive in a given environment is called:
What can insects tell us about a victim's death? body farm video?
Insects provide valuable information in forensic science by indicating the time since death, the presence of drugs or poisons, and whether a body has been moved after death. The study of insects on remains aids in solving crimes such as murders and poaching and contributes to a branch called environmental forensic entomotoxicology.
Insects play a pivotal role in forensic science, particularly forensic entomology, which is the study of insect biodiversity and its application in criminal investigations. Insects such as flies and beetles are the primary decomposers of carcasses, and their presence can reveal critical information regarding the time of death, whether the victim was exposed to drugs or poisons, and even if the remains were moved post-mortem. For example, forensic entomologists can examine the age of maggot larvae on a decomposing carcass to determine the minimum time that has passed since death. This is because certain species of flies, like blow flies, are known to arrive and lay eggs on a carcass very shortly after death occurs.
In the context of poaching and environmental crimes, the type of insects found on animal remains can indicate whether toxins were present in the animal's tissue, which may point to the use of poisons or pollutants. Moreover, if carcass remains contain insect species not native to the region where they were found, this could imply that the remains were moved. Such is the case with poached African animal parts that harbour Asian insects, suggesting a transcontinental journey. This aspect of forensic entomology, known as environmental forensic entomotoxicology, integrates the study of insect diversity with environmental conservation and toxicology.
Are the fat bodies larger in male or female frogs why is this so
The fat bodies are generally larger in female frogs compared to males. This size difference is attributed to the roles these fat bodies play in reproduction.
In female frogs, the fat bodies serve as an energy reserve that is crucial for the production of yolky oocytes, which are essential for successful reproduction. These fat bodies store energy in the form of lipids and provide the necessary nutrients for the developing embryos.
During the reproductive cycle, female frogs undergo vitellogenesis, the process of yolk formation in the oocytes, which requires a significant amount of energy. The fat bodies mobilize lipids to support this energy-intensive process. Males, on the other hand, do not have the same reproductive demands and therefore typically have smaller fat bodies. Their reproductive role primarily involves producing sperm, which does not require the same level of energy storage as egg production.
Additionally, the size of the fat bodies can fluctuate seasonally and with the reproductive status of the frog. They tend to be largest during the breeding season when females are preparing to produce eggs. After oviposition (egg-laying), the fat bodies may shrink significantly as the stored energy is depleted.
In summary, the larger size of fat bodies in female frogs is a reflection of their greater energy demands for reproductive purposes, particularly in the production of eggs with substantial yolk reserves to support embryonic development.
Three months after fertilization and development of a placenta around the developing fetus, the corpus luteum regresses and forms the
After the industrial revolution, dark-colored moths outnumbered light-colored moths in certain regions of england. within the past 40 years, factories in these regions have added scrubbers and air purifiers to their smokestacks, and the relative number of light-colored moths has increased. the probable reason for this increase is that
The increase in light-colored moths is linked to the reduction in industrial pollution. As environmental changes occurred, lighter moths became better camouflaged and their populations increased—a phenomena known as industrial melanism and an example of directional selection.
Explanation:The increase in light-colored moths can be attributed to a biological process called directional selection, linked to changes in industrial pollution levels. During the Industrial Revolution in England, dark-colored moths—specifically Peppered Moths (Biston betularia)—predominated due to the camouflaging effect of soot-covered landscapes, which offered them protection against predators. Factories discharged soot, which darkened the environment and provided a favorable background for the dark-colored moths, making them less visible to predators.
However, as factories began to incorporate scrubbers and air purifiers, which reduced pollution levels, the color of the environment gradually lightened. This shift, in turn, favored the light-colored moths, which became better camouflaged against the cleaner environment, hence their increase in number. This phenomenon, known as industrial melanism, showcases how environmental factors can direct natural selection.
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Describe how earth scientists use fossil clues to know where to look for oil.
What is the powerhouse of the cell?
Women who enter pregnancy with excess weight (bmi ~29) should:
Where and in what form is prokaryotic dna found? where is eukaryotic dna found?
Prokaryotic DNA is found in the cytoplasm, specifically within a region called the 'nucleoid', and is typically in a circular form. Eukaryotic DNA is located in the nucleus of the cell and is linear, forming chromatin and chromosomes.
Explanation:In a prokaryotic cell, the DNA is found in the cytoplasm, more specifically within a region called the 'nucleoid'. Unlike eukaryotic cells, prokaryotic cells lack a defined nucleus, so the DNA is not contained within a nuclear envelope. The DNA in prokaryotic cells is typically in a circular form.
On the other hand, in eukaryotic cells, the DNA is found in the nucleus of the cell, which is separated from the cytoplasm by a nuclear envelope. Unlike prokaryotic DNA, eukaryotic DNA is linear and associated with proteins to form a material called chromatin, which condenses to form chromosomes during cell division.
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In which organelle does photosynthesis take place? stoma vascular bundle mitochondrion chloroplast
Answer: The correct answer is- Chloroplast.
Photosynthesis is a process of formation of food (that is a carbohydrate) in green plants and algae by using CO2 (carbon dioxide) and water in the presence of sunlight.
This process takes place in a specialized membrane bound organelle that is termed as chloroplast.
This organelle contains a green pigment, chlorophyll, which absorbs the energy from sunlight and convert it into chemical energy in the form of ATP and NADPH.
The chemical energy is then utilized in the formation of carbohydrate (glucose) in the next phase, which is a light independent phase.
Thus, chloroplast is the right answer.
Which areas receive more sunlight as compared to the polar areas? the areas receive more sunlight as compared to the polar areas?
The answer is tropical areas. The tropical areas obtain more radiant energy from the Sun than they lose to space through terrestrial radiation, and vice versa for polar areas. Earth has an energy remaining in the tropics and an energy scarcity for the polar areas.
Answer:
tropical
Explanation:
What is the recommended intake of carbohydrate during intermittent, high-intensity sports?
An interaction in which drugs combine in the body to produce extremely uncomfortable reactions is called antagonism. synergism. intolerance. cross-tolerance.
The right option is Intolerance
Drug Intolerance is a situation in which drugs cause adverse effects such as drowsiness or stomach upset and the body is unable to tolerate or bear these effects. An individual with drug intolerance may be able to continue with the drugs if the dose is reduced because drug intolerance sometimes disappears as drug therapy continues.