why would it be important for scientists to study the age structure of a group of animals if they seem stressed?
Answers
Studying the age structure of a group of animals is important if they seem stressed because it can provide insights into potential population decline or ecological imbalances, as stressed animals may have different reproductive rates and survival probabilities depending on their age.
Age structure refers to the distribution of individuals in a population according to their age. This information can be useful in understanding the population dynamics and health of a group of animals. If a group of animals is exhibiting signs of stress, such as reduced reproductive rates or increased mortality, studying their age structure can provide insights into potential causes and consequences of the stress. For example, if the population has an imbalanced age structure with a higher proportion of older animals, this may suggest that there have been low reproductive rates or high mortality among younger individuals, which could ultimately lead to a decline in the population. In addition, different age groups may have varying levels of vulnerability to stressors, so understanding the age structure can help in designing appropriate conservation or management strategies.
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Related Questions
As thermal energy is added to an object, the speed of molecules of that object increase. True or False?
Answers
Answer:
True because at things like a metal string heats up, the molecules go faster which creates the thermal energy
Answer:
true
Explanation:
a mutation in the e. coli tryptophan synthase gene produces arginine (arg) instead of glycine (gly) at position 211 of the protein and the bacteria are unable to survive in the absence of tryptophan. a different mutation produces serine (ser) at the same position and the bacteria can survive in the absence of tryptophan. what is the conclusion from this result?
Answers
The Gly residue at position 211 is crucial for the catalytic activity of the tryptophan synthase protein in E. coli.
The mutations within the e. Coli tryptophan synthase gene that produces arginine (arg) or serine (ser) in preference to glycine (Gly) at junction 211 of the protein has distinctive effects on the microorganism's potential to live on within the absence of tryptophan.
Those outcomes suggest that the Gly residue at function 211 plays a critical position in the characteristic of the tryptophan synthase protein. The inability of the E. Coli bacteria with the arg substitution to live to tell the tale in the absence of tryptophan shows that the mutation has disrupted the function of the protein.
Tryptophan synthase is an enzyme that catalyzes the last two steps inside the biosynthesis of tryptophan, and the mutated protein is probably not able to perform this feature.
The ser substitution, however, does no longer seem to affect the protein's function, as the bacteria can live to tell the tale in the absence of tryptophan. The one-of-a-kind outcomes of the mutations suggest that the Gly residue at function 211 is important for the protein's catalytic activity.
This residue can be concerned with the binding of substrates or the catalytic mechanism of the enzyme. The mutations provide insight into the structure and characteristics of the tryptophan synthase protein and might assist to perceive key amino acid residues which can be critical for the protein's interest.
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Aristotle is considered the founder of
Answers
Answer: Formal logic
Explanation:
Gregor Mendel, a 19th century monk, used pea plants to arrive at several conclusions
about how traits are passed on to offspring. One conclusion became known as the Law of
Segregation. The illustration below shows how this law operates.
Parent 1
Parent 2
Offspring 1 Offspring 2 Offspring 3 Offspring 4
Which conclusion can you make based on Mendel's work as shown in the diagram?
Parent 1 has the dominant trait
Parent 2 has the dominant trait.
The offspring inherit traits only from Parent 1.
The offspring will not pass on the trait, inherited from Parent 2, to their offspring.
Answers
Answer:
I think the answer is parent one has to dominant off string since it looks more like them since they might they might have better geans
Answer:
Parent 1 has the dominant trait
According to the article, What are different between young male indris and older male indris?
Answers
According to the article, the main difference between young male indris and older male indris is their vocalizations.
Young male indris have high-pitched calls, while older males have lower-pitched calls. Other differences mentioned in the article include the size of their vocal sacs (which are larger in older males), the development of their secondary sexual characteristics (older males have longer, bushier fur and more prominent crests), and their social status within the group (older males are dominant and have access to better food resources).
Additionally, the article notes that young male indris may spend more time socializing and playing than older males, who focus more on maintaining their status within the group and defending their territory.
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During which phase of the cell is a cells DNA copied
Answers
Explanation:
Hi there!
Cell cycle has 2 phases (i.e M-phase and Inter-phase). Interphase is considered to be the longest phase. Interphase also has G1-phase, S-phase and G2-phase. In cell cycle while moving from M-phase it has two option either to go in G1-phase or G0 phase. It it goes to G0-phase it doesn't go under cell division but if it goes to G1-phase it starts to prepare materials required to replicate or copy DNA. After preparing all the material it goes in S-phase and copies DNA. It doesn't go to G2-phase until it copies DNA perfectly. Then it goes to G2-phase. In this phase it prepares material for replication of other cell organelles.
Therefore, DNA is copied in S-phase.
Hope it helps!
Answer:
S phase (Synthesis phase)
Explanation:
DNA is copied during interphase (S phase) before mitosis and just before meiosis. Mitosis is usually defined as the usual method of cell division, characterized typically by the resolving of the chromatin of the the nucleus into a threadlike form, which condenses into chromosomes, each of which separates longitudinally into two parts, one part of each chromosome being retained in each of two new cells resulting from the original cell. Meiosis is usually defined as part of the process of gamete formation, consisting of chromosome conjugation and two cell divisions, in the course of which the diploid chromosome number become reduced to the haploid (A single set of chromosomes). In human, mitosis produces diploid daughter cells which have the same number of chromosomes as the parent cell. Meiosis produces gametes (sperm or egg) which are haploid, meaning these cells have half the number of chromosomes as body cells such as skin cells. DNA is copies using a process called semiconservative replication.
More information:
What is DNA replication? What is its importance?A double-stranded DNA molecule is duplicated during DNA replication (by a variety of proteins) to create an identical double-stranded DNA molecule (so whereas the cell started with one copy, it ended up with two identical copies). Cell division would not be possible without DNA replication, hence it is crucial. In other words, either one cell would receive all the DNA while the other received none, preventing true cell division, or each cell would receive just half the DNA it requires, preventing the daughter cells from surviving (also leading to death of both daughter cells). DNA replication allows cells to replicate their whole set of DNA so that when they divide, each new cell has its own complete set of DNA. In theory, this allows for endless cell division.
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A person was admitted to hospital in a coma. Analysis of the arterial blood gave the following values: PCO2 16 mm Hg, HCO3- 5 mmol/l and pH 7.1. What is the underlying acid-base disorder?
Metabolic acidosis
Respiratory alkalosis
Metabolic alkalosis
Respiratory acidosis
Answers
Therefore, metabolic acidosis is the underlying acid-base imbalance in this situation.
How should I explain blood?Solids and liquids make up your blood. Water, salts, plus protein make up the plasma, which is the liquid component. Your blood contains more than 50% plasma. Red blood cells, white blood cells, plus platelets make up your blood's solid portion. Your organs and tissues receive oxygen from the lungs through red blood cells (RBC).
How come my blood is so red?Because haemoglobin, which is transported in the blood and works to carry oxygen, is iron-rich & red in color, human blood is red.
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Hello, can someone please help me with this please? help, please help
Answers
There is a 50% chance that the child would have fH (homozygous recessive for FH) in this scenario.
Mendelian genetics informs us how probable it is that a homozygous dominant FH (Familial Hypercholesterolemia) carrier and a heterozygous carrier will have a homozygous recessive FH carrier kid.
The children of homozygous dominant (FF) and heterozygous (Ff) parents might have any of the following pairings of alleles:
The child is heterozygous (Ff) like the heterozygous parent since it has a 50% chance of acquiring the dominant allele (F) from both parents. The kid is homozygous recessive (ff) for FH if both parents give it the recessive gene (f).
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What is the concern of two organisms filling
the exact same niche in the same
ecosystem?
A. The two organisms will compete.
B. One organism will move to a new niche.
C. Organisms often share niches in symbiosis.
Please help!
Answers
Answer:
A..
hope it is correct dear
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Answer:
organisms often share nitches in symbiisis
Experiment #1: Aseptic Techniques and Use of Media Incubation and Observations Incubate all cultures. After approximately 48 hours of incubation, examine your cultures. Do no remove the caps of your tubes or the lid of the Petri dish during any observation, because this may result in contamination. Take pictures of your cultures. For photographs of microbial cultures, avoid use of the flash, which will simply be reflected off the glass or plastic culture container. You may need to experiment with lighting conditions and camera angles to get the best pictures in your workspace. Observe and photograph the cultures again after approximately 72 hours of incubation. Your inoculated media should exhibit increasing amounts of microbial growth throughout the incubation period. Record name of bacterial species used in this investigation,
1. 2.
3. 4.
Photo 1 Insert the photo(s) of your cultures taken after 48 hours of incubation.
Answers
Aseptic technique is the term used to describe the methods utilized to prevent contamination by microorganisms in microbiological experiments.
Experiment #1: Aseptic Techniques and Use of Media Incubation and ObservationsAfter approximately 48 hours of incubation, examine your cultures. Do no remove the caps of your tubes or the lid of the Petri dish during any observation, because this may result in contamination.
Take pictures of your cultures. For photographs of microbial cultures, avoid use of the flash, which will simply be reflected off the glass or plastic culture container. You may need to experiment with lighting conditions and camera angles to get the best pictures in your workspace. Observe and photograph the cultures again after approximately 72 hours of incubation.
Your inoculated media should exhibit increasing amounts of microbial growth throughout the incubation period. The experiment aims to use aseptic techniques and media incubation to observe microbial growth and characteristics.
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Nicotine replacement and self-management techniques are two approaches to smoking__________________.
What is the name of the method in which a smoker tries to avoid tempting situations and manages feelings that lead to nicotine use?
True or False Most people pick up smoking habits in adulthood.
Making sure your friends know you are tobacco-free and sticking to that decision in the face of pressures and influences requires ________________skills.
Critical Thinking Identify 5 health benefits of smoking cessation (stop smoking) that occur throughout the years after you quit, as well as those you see within a few days.
Can someone pls help me.
Answers
Answer:
It requires trolling your friends skills
What are the two types of crust in the lithosphere?
Answers
Answer:
Oceanic crust and continental crust
the most basic functions of the body, such as breathing, blood pressure, and swallowing, are controlled by the:
Answers
The most basic functions of the body, such as breathing, blood pressure, and swallowing, are controlled by the Brain stem.
The bottom portion of the brain that connects to the spinal cord is called the brain stem (part of the central nervous system in the spinal column). The majority of the body's autonomic processes, which are vital to life, are controlled by the brain stem. These include the heartbeat and respiration.
Numerous essential aspects of life, including breathing, consciousness, blood pressure, heart rate, and sleep, are controlled by it. Numerous important clusters of white and gray matter can be found in the brainstem. Numerous significant brainstem nuclei are formed by the nerve cell bodies that make up the grey matter in the brainstem.
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9. What role do humans play in succession? What sort of interventions do we commonly make after a disturbance occurs? Give specific examples.
Answers
Answer:
Humans can cause destruction to ecosystems and initiate secondary succession.
Explanation:
Explanation:
Primary and Secondary succession happen when there is little to no life in a certain area. Primary succession often happens when lichens populate an area, making it habitable for mosses, mosses making it habitable for grasses and beginning to form dirt, grasses making it habitable for small plants and ferns, making it habitable for shrubs, making it habitable for small trees, making it habitable for trees.
In primary succession occurs with a barren land where no previous life existed before. Life sustains for the first time in the primary succession.
Secondary succession occurs in the area of previously occupied land that was interrupted by natural catastrophes like wildfire, flood, earthquake, or a volcanic eruption.
A case of the primary succession can be of a place where the volcanic eruption occurred and then the new life started residing.Humans play an important role as they are capable of damaging the ecosystem and can start secondary succession.Humans can cause a lot of damage like deforestation, forest fires, extensive farming, building dams and other infrastructures.Humans impact a lot of physical disturbances in the environment.These changes can cause erosion, water pollution, deforestation.An example of succession because of human intervention is:
Wildfire caused by humans will wipe out all the flora and fauna of the area. After some time herbs, shrubs, trees and animals will start dwelling causing a new habitat to establish.
Therefore, human intervention destroys the environment it leads to secondary succession to occur.
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help :/
first answer gets brainliest, ofc
Answers
3 A _______ contains many food chains.
Answers
Answer:
food web!!
Explanation:
In which of the following cell structures are the Drosophila chromosomes
(DNA) located?
A. Lysosomes
B. Nucleus
C. Ribosomes
D. Vacuole
Answers
Answer:
DNA is found in the nucleus. So B.
Explanation:
DNA is found in chromosomes and chromosomes are found in the nucleus because the nucleus is basically the DNA of a cell.
In the nucleus, cell structures are the Drosophila chromosomes (DNA) located. The correct option is B.
What is chromosomes?The thread-like components known as chromosomes are found in the nucleus of both animal and plant cells. Protein and a single molecule of deoxyribonucleic acid make up each chromosome (DNA).
DNA is passed down from parents to children and contains the precise instructions that give each kind of living thing its individuality.
a component that can be found in a cell's nucleus. Proteins and DNA are arranged into genes on a chromosome. There are typically 23 pairs of chromosomes in each cell.
One chromosome is made up of one protein and one DNA molecule. Different chromosome sizes can be packed together into a nucleus thanks to proteins called histones.
The DNA for the Drosophila chromosomes is found in the cell's nucleus.
Thus, the correct option is B.
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What were Plato's ideas on who should rule?
Answers
Answer:
Plato believed that philosophers would be the best rulers of society because they're able to understand true goodness and justice in a way that other people cannot. Because they would understand that the greatest self-benefit is living virtuously, they would act out morally and not out of self-interest.
Predict how the population of each color snail may change over 10 more generations. Explain your reasoning.
Answers
Answer:
yes, the colour may change because the snails will start adapting to the predators. survival of the fittest, even though the offspring are not identical.
Mutation may also be a reason
Explanation:
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A process for determining whether data from genetic crosses are consistent with a specific pattern of inheritance is called?
Answers
Data from the genetic crosses are consistent with the specific pattern of the inheritance is called as Punnett square
The Punnett square is the table in which the all of the possible outcomes for the genetic cross between the two individuals with the known genotypes are given. In its the simplest form, the Punnett square was consists of the square divided into the four quadrants. A Punnett square was a chart that is allows you to easily determine the expected the percentage of the different genotypes in the offspring of two parents. An example of the Punnett square for the pea plants is shown as below. In this example, both the parents are heterozygous for the flower color (Pp).
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are chemicals in food that your body requires to either maintain homeostasis or grow.
Answers
Answer:
Your body needs significant amounts of the macrominerals calcium, potassium, magnesium, chloride and phosphorus, and small amounts of the trace minerals iron, copper, zinc, iodine, fluoride and selenium to complete its metabolic processes.
Explanation:
in the uvr excision repair system in e. coli, which enzyme routinely synthesizes dna to replace the excised strand?
Answers
DNA polymerase I an enzyme routinely synthesizes DNA to replace the excised strand.
An enzyme called DNA polymerase to takes a role in the replication of bacterial DNA. It was the first known DNA polymerase, and Arthur Kornberg discovered it in 1956. It was first identified in E. coli and is found in all prokaryotes.
During lagging-strand synthesis, DNA polymerase I (pol I) processes RNA primers and fills up tiny gaps during DNA repair events. By extending the 3′ ends of an existing nucleotide chain and adding new nucleotides that are identical to the template strand one at a time using the formation of phosphodiester bonds, DNA polymerase adds a new strand of DNA.
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Which phrase describes a feature of chloroplasts that aids in the production
of sugar through photosynthesis?
OA. A rigid internal structure
B. Enzymes for breaking down proteins
C. A green pigment called chlorophyll
OD. A large network of membranes
Answers
C. A green pigment called chlorophyll
Which microfossils are useful for paleotemperature determination
using the oxygen isotope ratios of their shells?
Answers
The microfossils that are useful for paleotemperature determination using the oxygen isotope ratios of their shells are foraminifera.
Foraminifera are tiny marine animals that have been living for millions of years. Their shells are made up of calcium carbonate and are well-preserved in sediments. The shells of these microorganisms are widely used in paleoceanography to determine past climatic conditions. Paleoceanography is the study of the history of the oceans in the geological past using sediments and fossils. It helps us to understand how the oceans and climate have changed over time.
Paleotemperature is the measure of the temperature that existed in past geological ages. The temperature is determined by various means, including studying the growth rings of trees, ice cores, and microfossils, and others. Microfossils are microscopic fossils that are found in rocks and sediments that help in reconstructing past environmental and climatic conditions.
Oxygen isotope ratio is the measure of the relative abundance of oxygen isotopes 18O and 16O in a sample. The ratio of the two isotopes changes as a result of temperature changes. The ratio is used to reconstruct past temperature changes.
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the wet bulb temperature is 10 C the Dry bulb temperature is 14 C what is the relative humidity?
Answers
The relative humidity is approximately 22.9% based on the given wet bulb temperature of 10°C and dry bulb temperature of 14°C.
Relative humidityWet bulb temperature: 10°C = 50°F
Dry bulb temperature: 14°C = 57.2°F
SVP at wet bulb temperature: 0.284 * \(e^(17.27 * 10 / (10 + 237.3))\)= 0.284 * \(e^(-7.09)\) = 0.284 * 0.000828 = 0.0002356 psi
SVP at dry bulb temperature: 0.284 *\(e^(17.27 * 14 / (14 + 237.3))\) = 0.284 * e^(-5.97) = 0.284 * 0.002562 = 0.0007296 psi
AVP = 0.0002356 - (0.00066 * (57.2 - 50) * 14.7) = 0.0002356 - (0.00066 * 7.2 * 14.7) = 0.0002356 - 0.0686 = 0.000167 psi
RH = (AVP / SVP at dry bulb temperature) * 100
RH = (0.000167 / 0.0007296) * 100 = 0.229 * 100 = 22.9%
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1. Select the correct pairing of organism to its type
A.Cow - producer
B.Grass - decomposer
C.Fungi - primary consumer
D.Bobcat - secondary consumer
Answers
Answer:
d
Explanation:
trust me
Answer: D.Bobcat - secondary consumer
Explanation: secondary consumers eat primary consumers like squirrels and some rodents.
Female gametophytes in angiosperms are hidden, and protected. Where are they found, and what are they also called?.
Answers
Answer:
They are usually found in the center and they are called embyro sacs.
Explanation:
genes from both parents determine the surface antigens on a person's rbcs. for this reason, a child's blood type can differ from that of either parent. during pregnancy, when fetal and maternal circulatory systems are closely intertwined, the mother's antibodies may cross the placenta, attacking and destroying fetal rbcs. the resulting condition is called hemolytic disease of the newborn (hdn). some forms are quite dangerous and others so mild as to remain undetected. the sensitization that causes hdn usually takes place during delivery. bleeding at the placenta and uterus exposes an rh-negative mother to an rh-positive fetus's rh antigens. this event can trigger the production of anti-rh antibodies in the mother. the first rh-positive infant is not affected because these antibodies are not produced in large amounts until after delivery. however, a sensitized rh-negative mother will produce massive amounts of anti-rh antibodies in response to a second rh-positive fetus. these antibodies attack fetal rbcs, producing a dangerous anemia. in addition to rh, what are the other main surface antigens on red blood cells that determine blood type?
Answers
The other main surface antigens are ABO.
The blood group antigen ABO helps us to determine the blood type. In the A antigen blood plasma has antibodies that attack blood type B. 36% people in US have this antigen and 6% has A- and 30% has A+ blood. In the B antigen the antibodies in blood plasma attack type A blood. About 11% of people in US has type B blood. With 2% having B negative and 9% having B positive. When the blood has neither A or B antigen it is called type O blood. Here the plasma attack both type A and type B blood. About 48% people in US have type O blood and 9% has O negative and 39% has O positive. When the blood has both A and B antigen the plasma doesn't have any antibodies to attack type A and type B blood. About 5% of people in US has type AB blood. With 1% having AB negative and 4% have AB positive blood.
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What are the reproductive structures and main characteristic of angiosperms?
a) leaves
b) flowers
c) seeds
d) roots
Answers
Answer:
flowers
Explanation:
Although there is a tremendous variation among flowers, the reproductive parts are similar.
The reproductive structures and main characteristic of angiosperms are flowers. The correct option is b.
What are angiosperms?Angiosperms are called flowering plants. Angiosperms are plants that blossom and produce fruits that contain their seeds. With around 300,000 species, they are the most numerous and diverse group within the kingdom Plantae.
Gymnosperms are woody trees that resemble cones. They only produce seeds instead of flowers or fruits. The absence of the fruit wall leaves the seeds exposed. Gymnosperms generate unadorned seeds (a seed not enclosed in an ovary).
The reproductive organs in angiosperms are the blooms, which can be unisexual or bisexual. A triploid (3n) endosperm and a diploid (2n) zygote are produced by multiple fertilization in angiosperms.
Therefore, the correct option is b) flowers.
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Your dentist gives you an injection of anesthetic in preparation for a filling. Which cranial nerve did they target?.
Answers
Answer:
An anesthetic solution is injected adjacent to the mandibular nerve to block the transmission of pain signals from the mandible to the brain. The mandibular nerve is one of the three major branches of the trigeminal nerve, which is located on either side of the face.
Explanation: