Today, immunoassay techniques such as enzyme-linked immunosorbent assay (ELISA) and radioimmunoassay (RIA) are commonly used to measure plasma hormone levels for diagnostic purposes.
These methods rely on the specific binding between a hormone and its corresponding antibody to detect and quantify the hormone in the sample. Other techniques, such as mass spectrometry, are also used for hormone analysis, particularly in research settings.
Today, to measure plasma hormone levels, a common method used is enzyme-linked immunosorbent assay (ELISA). ELISA is a sensitive and reliable technique that detects and quantifies hormones in plasma samples by utilizing specific antibodies and enzymes for each hormone of interest.
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fast!!!
What two physical structures help protect the plant and animal against environmental conditions? (2 points)
Group of answer choices
Bark and feather
Pistil and ovary
Stamen and testes
Stem and skeleton
Answer:
Bark and feather
Explanation:
The outer covering of a plant is an example of a physical structure. Plants can have a waxy covering, fuzzy hair, feather,bark, thorns, or spines. These outer coverings help protect the plant from harsh weather conditions, predators, and can help reduce water loss. So your answer would be ( Bark and Feather)
In pea plants there is a dominant allele (A) for green pods and a recessive allele (a) for yellow pods. Suppose a heterozygous plant is crossed with a plant that has yellow pods. Complete the sentences about this monohybrid cross with the correct terms.
The phenotype of the heterozygous plant is
The genotype of the heterozygous plant is
The genotype of the plant with yellow pods is
The genotype of the gametes produced by the heterozygous plant is
The genotype of the gametes produced by the plant with yellow pods is
The expected frequency of F_1 plants with yellow pods is
The expected frequency of F_1 plants with the genotype AA is
Aa
75% A and 25% a
25%
50% A 50% a
0%
green pods
75% AA and 25% Aa
AA
yellow pods
75%
aa
50%
100% A
100% a
Answer and Explanation:
The phenotype of the heterozygous plant is green podsThe genotype of the heterozygous plant is AaThe genotype of the plant with yellow pods is aaThe genotype of the gametes produced by the heterozygous plant is 50% A 50% aThe genotype of the gametes produced by the plant with yellow pods is 100% a The expected frequency of F_1 plants with yellow pods is 50%The expected frequency of F_1 plants with the genotype AA is 0%Cross) a heterozygous plant is crossed with a plant that has yellow pods
Parental) Aa x aa
Phenotype) Green pods Yellow pods
Gametes) A a a a
50% 50% 100%
Punnet Square) A a
a Aa aa
a Aa aa
F1) 2/4 = 1/2 = 50% Aa, Plant with Green pods
2/4 = 1/2 = 50% aa, Plant with Yellow pods
In the given case, the correct terms are:
The phenotype of the heterozygous plant is green pods The genotype of the heterozygous plant is Aa The genotype of the plant with yellow pods is aa The genotype of the gametes produced by the heterozygous plant is 50% A 50% a The genotype of the gametes produced by the plant with yellow pods is 100% a The expected frequency of F_1 plants with yellow pods is 50% The expected frequency of F_1 plants with the genotype AA is 0%It is given that A gives green color which is dominant and a gives yellow pods which is a recessive trait. So in heterozygous conditions, only the dominant character will express itself therefore green color pods
The phenotype of heterozygous plants is Green podsIn heterozygous conditions, the alleles of a genotype are different. Therefore one allele is A and the other is a
The genotype of the heterozygous plant is AaThe yellow color of pods is a recessive trait and recessive trait if expressed only in the same alleles conditions that mean it is given by allele a. Therefore, the genotype of yellow pods is aa
The genotype of the plants with yellow pods is aaThe alleles in the heterozygous conditions are A and a so half of the gametes will have A and the other half have a
The genotype of gamete produced by heterozygous plants are 50% A and 50% aThe yellow pods are obtained by genotype aa. All the gametes are a
The genotype of gametes produced by the plants with yellow pods is 100% aCross:
A a
a Aa aa
a Aa aa
In the cross, there are 2 genotypes produced as aa out of four. So 2/4 × 100 will give 50%
The expected frequency of F1 plants with yellow pods is 50%There are no genotypes obtained as AA in the cross. Therefore, 0 out of 4 offspring will give 0%
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Please help i need the answers asap
The independent variable is temperature
The dependent variable is height of the plants
Three constant variables are; sunlight, nutrients and humidity
A line graph is more suitable since we have two variables.
What is the variable?We know that the term variable has to do with the kind of value that changes from time to time. In an experiment, there are three main kinds of variables;
1) the independent variable - The value of this would be altered throughout the experiment
2) The dependent variable - The value of this would only be changed when we change the dependent variable
3) The controlled variable - This would remain the same throughout the experiment
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Which of the following statements about organelles is NOT true?
A. Chloroplasts contain chlorophyll and are the site of photosynthesis.
B. Many of the same organelles are located in both plant cells and animal cells.
C. The nucleus in an animal cell has a different primary function than in a plant cell.
D. The endoplasmic reticulum has several roles, including packaging and transporting proteins.
Answer: C. The nucleus in an animal cell has a different primary function than in a plant cell.
Explanation:
In both plant and animal cells, the nucleus safely stores the DNA so it doesn't get damaged.
diatoms are found in both fresh and marine waters. they have an external shell of silica where half is inherited from its parent cell and it produces a new, smaller half that fits within it. how have these organisms dealt with the decrease in size with each generation?
The diatoms have dealt with the decrease in size with each generation by producing a smaller half that fits within the external shell. This allows the diatoms to maintain their size and continue to function properly.
The diatoms are able to do this because they have an external shell that is made of silica. The silica helps to keep the diatoms' size and also helps to protect them from predators. The diatoms use the silica to keep their size and also to keep predators away.
A diatom is a type of algae that is encased in a hard shell of silicon dioxide. These single-celled organisms are found in fresh and salt water, as well as in soil. Although they are microscopic, diatoms are an important food source for many aquatic animals. They are also used in the production of toothpaste, beer, and other products.
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Explain the following statement... The stomach is an organ in which both physical and chemical digestion occurs.
The digestive system starts in the mouth. In fact, as soon as you eat your first mouthful of a meal, digestion begins here.
Your body mechanically breaks down food during physical digestion
chopping, smashing, or grinding it into smaller bits.
However, during chemical digestion, small proteins or enzymes change the food's structure, which is composed of several atoms connected together.
Chewing is merely a portion of the digestive process.
Digestional enzymes break down food as it moves from your mouth into your digestive system, transforming it into more easily absorbed nutrients.
Chemical digestion is the term for this disintegration.
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A species of worm is active at night, and comes to the top of the soil only when it is dark outside. In the daytime, the members of the species stay burrowed several inches beneath the soil. Which of these explanations BEST describes how this nocturnal behavior evolved in the species of worm?A)The worms have a predator with keen night vision.B)The worms have a predator that is active during the day.C)The worms rely on solar energy to increase their body temperature.D)The worms have increased mating opportunities at the surface that require visual cues.
We noticed that the exercise provides us with the following information:
• The animal is ,active at night, and only goes to the surface at night;
,• He stays during the day underground.
Analyzing the alternatives, we can say that:
• A) is incorrect. The animal goes to the top of the ground at night and this allows us to say that this time is "safe" for it. Therefore, your ,predator ,must be active during the day.
,• B) is correct. As mentioned in alternative "A", the predator is active during the day.
• C) is incorrect, as it remains buried during the day, so animals do not depend on solar energy.
• D) is incorrect, he increased his mating opportunities at night times.
Answer: B.
What would be a good, novel follow up experiment? I have a presentation for class about an article "Urban green roofs promote metropolitan biodiversity: A comparative study." By wooster et al. And I need help coming up with a novel follow up experiment. I struggle with these kinds of things but the hypothesis I believe to have found is "green roofs have greater organism abundance and diversity the conventional roofs in Sydney, Australia." The data supported the hypothesis and showed that there was an increased avian, gastropod and arthropod presence in the green roof vs. The conventional roof. I'm sure its really easy but I can't figure it out.
A possible follow-up experiment could be to investigate the effect of different types of vegetation on the abundance and diversity of organisms on green roofs.
The study by Wooster et al. found that green roofs promote metropolitan biodiversity, but did not investigate the effect of different types of vegetation on this biodiversity. A follow-up experiment could focus on comparing the abundance and diversity of organisms on green roofs with different types of vegetation, such as native plants versus non-native plants.
The experiment could involve setting up multiple green roofs with different types of vegetation, and monitoring the abundance and diversity of organisms on each roof over a set period of time. Data could be collected on the presence of avian, gastropod, and arthropod species, as well as other types of organisms such as insects and microorganisms.
The results of this follow-up experiment could provide insight into which types of vegetation are most effective at promoting biodiversity on green roofs, and could help inform the design and construction of future green roofs. Additionally, the experiment could contribute to our understanding of the role of urban green spaces in supporting biodiversity in urban environments.
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How do viruses disrupt homeostasis in their host?
Answer:
Hence, during infection in vivo, a noncytopathic virus may turn off the "differentiation" or "luxury" function of a cell while not killing that cell (loss of vital function). This is turn can disrupt homeostasis and cause disease
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What is the purpose of using pedigree
Question 93
Biological effects should govern the required standards of radiological protection.
a. True
b. False
The statement "Biological effects should govern the required standards of radiological protection" is true because the primary aim of radiological protection is to prevent harmful effects of ionizing radiation on living organisms, including humans.
The biological effects of radiation depend on several factors, including the type of radiation, the dose, and the sensitivity of the exposed organism. The effects may be acute, such as radiation sickness, or long-term, such as an increased risk of cancer.
Therefore, the radiation protection standards should be based on the latest scientific evidence on the biological effects of radiation, including the effects of low-level exposures and radiation doses received over a long period. The standards should also consider the potential risks associated with occupational exposure, medical radiation procedures, and environmental exposure, the statement is true.
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23. Mike has a mass of 60 kg. He pulls on a wagon of mass 30 kg with a force of 20 N. The wagon remains motionless.
The wagon exerts a force of ____ on Mike
Answer:
20N
Explanation:
plzz make mcqs for cadet level iksc
1. biology
2. chemistry
3. physics
Answer:
IGCSE**
u can just go through the book
How does changing the amount of carbon dioxide in a plant’s environment affect its growth?
Select one:
The amount of carbon dioxide in a plant’s environment does not affect its growth.
Decreasing the amount of carbon dioxide in the environment will always cause a plant to grow more.
Increasing the amount of carbon dioxide in the environment will cause a plant to grow more if it has enough sunlight and water.
Increasing the amount of carbon dioxide in the environment will always cause a plant to grow more.
Please hurry
How does natural selection lead to evolution?
A.Every generation is a new species.B.The fittest organism cannot reproduce.C.New species learn the behavior of old species.D.Small changes add up over time.
Answer:
B is the answer. I hope this is helpful :)
Answer:
The answer would actually be D
Explanation:
I just took the quiz
what is buccal respiration
What is the difference between mutation that occur on somatic cells and sex cells?
Answer:
Somatic mutations – occur in a single body cell and cannot be inherited Germline mutations – occur in gametes and can be passed onto offspring
Explanation:
A species of finch on the mainland has a long, thin beak. It lives in swamps and its main food is insects. A closely related species of finch lives on an island near the mainland. This island has many trees that produce small, hard seeds. What kind of adaptation most likely became common in the island population, in response to its different environment
The island population of finches most likely developed adaptations such as a larger and stronger beak to efficiently consume the small, hard seeds produced by the trees.
In response to the different environment on the island, the finches likely underwent natural selection favoring traits that allowed them to effectively obtain food from the available resources. With the abundance of small, hard seeds produced by the trees, the finches with larger and stronger beaks would have had an advantage in cracking open and accessing the seeds. Over time, individuals with traits that allowed them to exploit the available food source would have been more successful in survival and reproduction, leading to the increase in the frequency of these adaptive traits within the population.
This process is an example of adaptive radiation, where a population of organisms diversifies and adapts to different ecological niches. In this case, the island population of finches experienced a selective pressure favoring traits that facilitated feeding on the small, hard seeds. Through natural selection, the beak size and strength likely evolved to better suit the new food source, allowing the finches to survive and reproduce more successfully on the island.
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In humans, B is the allele for brown eyes and b is the allele for blue eyes. Two brothers both have brown eyes, but one of them has both the B and b alleles while the other only has B alleles. Which statement is true about the brothers? They have the same phenotype but different genotypes. They have the same phenotype but different genotypes. They have the same genotype and phenotype. They have the same genotype and phenotype. They have the same genotype but different phenotypes. They have the same genotype but different phenotypes. They have different phenotypes and genotypes.
Answer:
They have the same phenotype but different genotypes.
Answer:
They have the same genotype but different phenotypes.
If x indicates the fossils of two closely related species, neither of which is extinct, then their remains may be found in how many of these strata?.
Answer:
two strata hope this helps
Which of the Hardy-Weinberg conditions are usually valid for most populations?
The Hardy-Weinberg equilibrium consists of five conditions that must be met in order for the frequency of alleles in a population to remain constant from generation to generation.
What are the Hardy-Weinberg conditions ?These conditions are:
Large population size: The population must be large enough to prevent the effects of genetic drift.No mutations: There must be no mutations that alter the frequency of alleles in the population.No gene flow: There must be no migration into or out of the population, which would bring in new alleles.No selection: There must be no natural selection favoring or eliminating certain alleles.Random mating: There must be random mating, meaning that individuals mate with each other based on chance rather than preference.Of these conditions, it is generally difficult to meet all of them in real populations, as most populations are subject to some form of genetic drift, mutation, gene flow, selection, or non-random mating. Therefore, it can be argued that none of the Hardy-Weinberg conditions are usually valid for most populations.
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PLEASE HELP!!! WILL GIVE BRAIN!!!
Answer:
Community!!!
Explanation:
A population includes only the SAME types of animals.
A biosphere is the region where they live in, so it has abiotic factors
abiotic are NONLIVING THINGS.)
The community, has different animals, and that's it.
Lastly, and ecosystem, is in a biosphere, but includes the community, and abiotic things.
I hope this helped, and I am here if you need anything else!
What do fungi produce to spread to other plants and animals?
Hyphae
Spores
Bacteria
Viruses
Pathogens
To reach the plant, the fungus produces spores, which are transported by wind, water, or animals, such as insects.
In both sexual and asexual reproduction as shown above, fungi produce many small, light-weight spores that disperse from the parent organism by either floating on the wind .
Fungi reproduce by spreading microscopic spores. These spores are often present in the air and soil, where they can be inhaled or come into contact with the surfaces of the body, primarily the skin.
Various enzymes produced by fungi are used industrially and in detergents. Fungi are also used as biological pesticides to control weeds, plant diseases and insect pests.
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how much of our body cells are made up of proteins????(percentage)
Answer:
Protein makes up approximately 20 percent of the human body and is present in every single cell. The word protein is a Greek word, meaning “of utmost importance.” Proteins are called the workhorses of life as they provide the body with structure and perform a vast array of functions.
Explanation:
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Answer:
20% of our body cells made up of protein
In humans, brown eyes are generally dominant over blue eyes. Find the phenotypic and genotypic ratios of a cross between two heterozygous brown-eyed people. Choose This is a required question
Answer:
Brown eyed genotype: Aa (eterofzygous) or AA (homofzygous)
The genotypes derived from the cross are: AA, Aa, Aa, aa
The phenotypes are: 3 with brown eyes and 1 with blue eyes (aa)
The phenotypic ratio is 3:1 (brown eyes: blue eyes) and the genotypic ratio is 1:2:1 (dominant homozygous: heterozygous: recessive homozygous).
What happens in a heterozygous cross?In humans, the allele for brown eyes (B) is dominant over the allele for blue eyes (b). Heterozygous individuals, who carry one copy of each allele (Bb), will have brown eyes.
When two heterozygous brown-eyed individuals (Bb) cross, the possible genotypes of their offspring are:
BB (brown eyes): 25% chance (homozygous dominant)
Bb (brown eyes): 50% chance (heterozygous)
bb (blue eyes): 25% chance (homozygous recessive)
So, the genotypic ratio of the offspring is 1:2:1 (BB:Bb:bb).
As for the phenotype, the only possible one is brown eyes and it occurs in 75% of the offspring (25% BB + 50% Bb)
Therefore, the phenotypic ratio of the offspring is 3:1 (brown eyes: blue eyes)
It's worth noting that while this is the typical outcome of crosses involving the eye color genes, it's not universally accurate, as other factors and genes might have an influence on the phenotype. Additionally, in reality, eye color is a complex trait and many other genes are involved not just B and b, so the dominance is not always that clear.
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The element nitrogen is present in all of the following except A) proteins.B) nucleic acids.C) amino acids.D) DNA.E) monosaccharides.
Nitrogen is present in all of the options listed except for monosaccharides. Thus, correct option is (E).
A crucial component of biological compounds is nitrogen. Nitrogen is a component of proteins, nucleic acids (DNA and RNA), amino acids (which serve as the building blocks for proteins), and DNA. Amino acids, which make up proteins, contain nitrogen as a necessary part of their structure.
Adenine, cytosine, guanine, and thymine/uracil are nitrogenous bases that are essential for the operation of nucleic acids, including DNA. Monosaccharides, simple sugars and the fundamental unit of carbohydrates, do not, however, include nitrogen. Instead, the majority of their atoms are made up of carbon, hydrogen, and oxygen.
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If the sperm cell of an organism contains 14 chromosomes, how many chromosomes are in an autosomal cell of this organism.
If a sperm cell of an organism contains 14 chromosomes, the number of chromosomes in an autosomal cell of this organism is 28.
How so many clones would a 14-chromosome cell produce?Mitosis is a kind of cell division that produces two daughter cells with the same number of chromosomes as the parent cell.The two daughter cells will have 14 chromosome each if the mother cell had 14 chromosomes.
How many chromosome 14 copies are there?Humans typically have two copies of their 46 chromosomes, which are split into 23 pairs.One of the pairings is made up of two copies of chromosomes 14, one from each parent.
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All weather is energy in motion. Where does this energy come from?
A the water cycle
B the sun's radiation
heat from the Earth's core
D
the moon's gravity
Answer:
Energy makes it all happen. The Sun radiates huge amounts of energy. Only a small portion of that energy hits the Earth, but it is enough to light our days, heat our air and land, and create weather systems over the oceans. Most of the energy you will learn about comes from the Sun.
Explanation:
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Would all of the reptiles in an area be considered a population? EXPLAIN
The study of a living being is called biology.
The correct answer to the question is yes.
What is the population?Population typically refers to the number of people in a single area, whether it be a city or town, region, country, continent, or the world.
According to the question, the reptiles living in an area is considered a reptile.
Hence, the correct answer is yes.
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What is GMO?
Where are they?
How long have they been around?