many synthetic chemicals, such as pcbs, act as estrogen mimics. in an ecosystem, these persistent chemicals would have the greatest effect on which of the following? responses decomposers decomposers primary producers primary producers parasites parasites secondary consumers secondary consumers autotrophs
Answers
In an ecosystem, the greatest effect of the synthetic chemicals is imparted on the option B: primary producers.
Numerous synthetic chemicals, including polychlorinated biphenyls (PCBs), which are categorized as endocrine disruptors and act as estrogen mimics. The primary producers in an ecosystem would be the ones most impacted by these persistent substances.
Primary producers are creatures like plants and algae that make their own sustenance through photosynthesis. They are generally autotrophs, as they can synthesize their own food with the help of sunlight, water, etc. However, secondary consumers are also influenced by these chemicals when they are ingested.
To know more about the primary producers, refer:
https://brainly.com/question/24669792
#SPJ4
Complete question is:
Many synthetic chemicals, such as pcbs, act as estrogen mimics. in an ecosystem, these persistent chemicals would have the greatest effect on which of the following? responses
Decomposers
Primary producers
Parasites
Secondary consumers
Autotrophs
Related Questions
Which scientist created the most modern classification hierarchy that we use today? Aristotle Linnaeus Woese Whittaker
HELP ME PLEASEEEE
Answers
Answer:
Linnaeus
Explanation:
Answer:
Linneaus
Explanation:
Linnaeus is responsible for taxonomy, the most modern classification of heirarchy we use today.
rue or false? the first reversible enzymatic reaction unique to a metabolic pathway is called the committed step. aldolase is the key regulatory enzyme in the mammalian glycolytic pathway. glycolysis produces a net 2 moles of atp per 1 mole of glucose.
Answers
Answer:
Explanation:
1. True
2 .False
3 .True
what will happen to the adjacent tissues due to the heat generated by the polymerization?
Answers
The adjacent tissues may experience thermal damage due to the heat generated by the polymerization process.
Polymerization is the process of linking together monomers to form a polymer, often through a chemical reaction that generates heat. The amount of heat generated during polymerization depends on the specific polymerization reaction and the conditions under which it occurs. In general, the heat generated during polymerization can cause adjacent tissues to be affected in several ways:
1. Thermal damage: The heat generated during polymerization can cause thermal damage to the adjacent tissues. This can result in cell death, tissue damage, and inflammation.
2. Shrinkage: The heat generated during polymerization can cause the polymer to shrink as it cools, which can lead to stresses on the adjacent tissues. These stresses can cause microfractures in the tissues, which can further exacerbate tissue damage and inflammation.
3. Adhesion: In some cases, the heat generated during polymerization can cause the polymer to adhere to adjacent tissues. This can interfere with the normal function of the tissue and may require additional surgical intervention to correct it.
Overall, the effect of heat generated during polymerization on adjacent tissues will depend on the specific polymerization reaction, the amount of heat generated, and the location of the polymerization within the body.
Learn more about polymerization: https://brainly.com/question/1602388
#SPJ11
Please answer this.. please
Answers
Answer:
10.8 amu
Explanation:
11 * 0.80 = 8.8 (11 represents ion, 0.80 represents %)
10 * 0.20 = 2 (10 represents ion, 0.20 represents %)
8.8 + 2 = 10.8 amu
What describes the dermal papilla that is associated with hair?
Answers
The dermal papilla associated with hair is a small, specialized structure located at the base of the hair follicle. It is an important component of the hair growth and regeneration process.
Here are some key characteristics and functions of the dermal papilla:
Location: The dermal papilla is found at the base of the hair follicle, situated within the dermis layer of the skin.Vascularization: The dermal papilla is highly vascularized, meaning it has a rich blood supply. This blood supply nourishes the hair follicle and provides oxygen and nutrients essential for hair growth.Inductive Properties: The dermal papilla plays a critical role in hair follicle development and regeneration. It contains specialized cells that produce various signaling molecules and growth factors, which are responsible for initiating and regulating the growth of the hair shaft.Communication: The dermal papilla communicates with the surrounding cells of the hair follicle, including the epithelial cells that produce the hair shaft. This communication is necessary for the proper formation, cycling, and maintenance of hair growth.Sensory Function: The dermal papilla contains sensory nerve endings that are involved in transmitting sensory information associated with the hair follicle, such as touch or movement.Learn more about “ dermal papilla “ visit here;
https://brainly.com/question/26520611
#SPJ4
which structure is lined with simple squamous epithelium?
Answers
Answer:
En los tejidos epiteliales, las células están estrechamente unidas entre sí formando láminas continuas que tiene distintas características: q No están vascularizados, por ello se nutren por difusión. q Como regla general, debajo de todo epitelio siempre hay tejido conectivo (la lámina basal).
Explanation:
as they walked through the haunted house, every room heightened their fear and anxiety. the walls of one room moved to close in around them, while in another they had to lie in coffins, which then opened up beneath them. which division of their ans was most active, and which neurotransmitter(s) would be involved in this pathway? select all that apply.
Answers
The sympathetic nervous system (SNS) is likely most active during the haunted house experience. The SNS is the part of the autonomic nervous system that activates the body's "fight-or-flight" response.
This response causes a release of the neurotransmitters adrenaline and noradrenaline, resulting in increased heart rate, sweating, and other physiological changes.
In addition, other neurotransmitters such as dopamine and serotonin may also be involved. Dopamine is typically involved in feelings of pleasure, but when released too quickly or in large quantities it can cause feelings of fear. Serotonin is linked to feelings of well-being, but it can also be involved in feelings of anxiety.
know more about sympathetic nervous system here
https://brainly.com/question/28485355#
#SPJ11
As they walked through the haunted house, every room heightened their fear and anxiety. the walls of one room moved to close in around them, while in another they had to lie in coffins, which then opened up beneath them. which division of their answer was most active, and which neurotransmitter(s) would be involved in this pathway? select all that apply.
A. sympathetic nervous system
B. Central nervous system
C. Peripheral nervous system
D. none
True or false?
A researcher interested in the process of adjustment to prosthetic limb use would conduct phenomenological research.
Answers
A researcher interested in the process of adjustment to prosthetic limb use would conduct phenomenological research: False.
Phenomenological research is a qualitative studies approach that seeks to recognize and describe the commonplace essence of a phenomenon. The method investigates the everyday experiences of humans at the identical time as postponing the researchers' preconceived assumptions approximately the phenomenon.
The motive of Phenomenological studies is to light up the precise, to discover phenomena via how they're perceived by way of the actors in a situation.
learn more about Phenomenological research here
https://brainly.com/question/23848264
#SPJ1
What’s an example of a mutualism ecological relationship in a tundra biome?
Answers
Answer:
Answer. Mutualism: One example of symbiotic mutualism in the tundra biome involves lichens. Lichen does look like moss but actually represents a symbiotic relationship between fungi and algae or algae. The fungus "eats" the sugar in the algae for photosynthesis and the algae receives protection from the fungus.
Which of the following would be examples of concentration gradients in everyday life? PICK ALL THAT APPLY.
Running up a slide at the playground.
A drop of food coloring spreads out into a glass of water.
The smell of fresh-baked cookies starts from the kitchen and moves to the rest of the house.
The air freshener that you sprayed in the living rooms spreads out.
Answers
Answer:
A drop of food coloring spreads out into a glass of water.
The smell of fresh-baked cookies starts from the kitchen and moves to the rest of the house.
The air freshener that you sprayed in the living rooms spreads out.
Explanation:
A difference in concentration of molecules in physical space is called a concentration gradient. An easy to understand example from everyday life is the application and subsequent fading of perfume or aftershave scent.
Answer:
A drop of food coloring spreads out into a glass of water.The smell of fresh-baked cookies starts from the kitchen and moves to the rest of the house.The air freshener that you sprayed in the living rooms spreads out.Explanation:
These are the examples of concentration gradients in everyday life.
Consider the following two statements about succession.
Student 1:
Matthew - As succession begins, communities tend to be dominated by mostly K-selected species. As succession continues, r-selected species tend to compete better and therefore become more and more common.
Student 2:
Iman - As succession begins, communities tend to be dominated by mostly r-selected species. As succession continues, K-selected species tend to compete better and therefore become more and more common.
Which student is correct?
a. Provide a rationale for your answer (2 marks)
b. Provide a specific example of succession which includes at least one example of an r-selected and one example of a K-selected species. (1 mark)
Note - No marks are earned by simply agreeing with either Matthew or Iman
Answers
4. animal models of infection a.discuss at least three ideal attributes of an animal model b.what should the criteria be for a nonhuman animal model to be acceptable as a stand-infor humans? under what conditions would you favor allowing human volunteers to beused as guinea pigs?
Answers
Ideal attributes of an animal model include reproducibility, accuracy, and a low cost of maintenance.
What is attribute?
An attribute is a characteristic or quality that is given to a specific individual, group, or object. Your willingness to assist others, as evidenced by the moment you halted traffic so that the duck family might cross the street, may be your best quality.
The Latin verb attribuere, that also includes the prefix commercial, meaning "to," and tribuere, meaning "give or bestow," is the source of the English word attribute. To attribute is a verb that means to give credit, as in: I attribute my A on the test to all my diligent studying. In Greek and Roman mythology, an attribute, like Zeus' lightning bolt as well as Poseidon's trident, will frequently stand in for a character.
a. Ideal attributes of an animal model include reproducibility, accuracy, and a low cost of maintenance. Reproducibility means that the results of the experiment should be repeatable and reliable, and that the model should be able to be used many times. Accuracy means that the model should accurately reflect the effects of a pathogen in humans. A low cost of maintenance is important because animal models are expensive to maintain and operate.
b. Criteria for a nonhuman animal model to be acceptable as a stand-in for humans include similarity in anatomy, physiology, and pathophysiology to humans, as well as similar sensitivity to drugs and the pathogen being studied. Additionally, the animal should be able to be bred and maintained in captivity, and the results of the experiment should be reproducible.
Under what conditions would you favor allowing human volunteers to be used as guinea pigs? Human volunteers should only be used in research when it is absolutely necessary, and when the risks of the experiment can be minimized. Additionally, ethical considerations must be taken into account, and the volunteers should be fully informed of the risks and benefits of their participation.
To learn more about attribute
https://brainly.com/question/27959981
#SPJ4
Which statement is NOT true and female reproductive cycles:
a. The ovarian cycle and the menstral cycle are linked.
b. The endometrium is prepared as part of the menstral cycle to provide nutrients for the embryo that was developed during the ovarian cycle.
c. The ovarian cycle is extremely predictable and an extremely effective method of natural birth control
d. The menstral cycle starts with the onset of the release of the endometrium
Answers
Answer:
Answer C
Explanation:
The cycle can sometime be irregular, not predictable. This method of natural birth control has can fail 25% of the time, not extremely effective.
History taking is key part of each initial consultation. Which of the following is NOT typically included?
How the animal is behaving
What tests are going to be carried out
What the symptoms are
How the animal is eating and drinking
What treatments they are receiving (including non-prescribed)
Answers
Answer:
what test are going to be carried out
How does the energy from the sun influence the water Cycle ?
Answers
Answer:
the suns energy heats up the ocean and other water and causes evaporation, beginning the cycle!
Explanation:
i'd appreciate brainliest, but of course you dont have to
If these are present in a new environment, a species is unlikely to become invasive.a. predators, parasites, and competitorsb. cane toads, kudzu, and zebra musselsc. exotic speciesd. symbiotic and commensalist species
Answers
A species will not become invasive if the new environment contains A. predators, parasites and competitors.
Invasive species are species that can affect their environment and cause damage to both native and introduced species.
An environment can be balanced if all biotic and abiotic components are in the proper portion, both in number and role in the environment. When the environment is in a state of balance, such as the presence of predators, parasites and competitors that will suppress the number of a species so that it does not develop too aggressively and cause environmental damage. Predators will eat food that is in the troph below, as well as competitors that will prevent one species from developing quickly.
Learn more about invasive species at:
https://brainly.com/question/18200563
#SPJ4
iodine 131 has a half-life of 8 days. if the amount of iodine 131 in a sample is 8 g how much iodine 131 will remain after 32 days?
Answers
Answer:
4g?
Explanation:
Not really sure but pretty sure.
how does the cell organelles that are directly involved in the process of cell division participate in the process?
pls help asap
Answers
Centrioles are the organelles involved in cell division
What is cell division?
The process by which a parent cell divides into two daughter cells is known as cell division. Cell growth and chromosome replication precede cell division, which often happens as part of a longer cell cycle. Meiosis is a type of cell division that creates haploid gametes for sexual reproduction by reducing the number of chromosomes from two of each type in the diploid parent cell to one of each type in the daughter cells. Mitosis is a type of cell division that produces daughter cells that are genetically identical to the parent cell.Role of centrioles in cell division:
The fundamental units of centrosomes are centrioles, which are tiny cylinders (microtubules). Each centrosome is made up of two centrioles, which are each made up of nine microtubule triplets organized in the shape of a cylinder. Centrioles are hypothesized to be involved in the completion of cytokinesis during the process of cell division and are in charge of arranging the spindle fibers in the mitotic spindle apparatus.Hence the centrioles are the organelles involved in the prosses of cell division
To learn more about cell division click on the link
https://brainly.com/question/796780
#SPJ1
Please Help Me!!!!!
Which of the following organism(s) has/have peritrichous flagella?
A.)E. coli
B.)Paramecium
C.)All bacteria
D.)Euglena
Answers
Answer:
E.coli
Explanation:
Peritrichous bacteria possess multiple flagella that can grow from essentially any point on the cell body surface. Well-studied examples include Escherichia coli (E. coli, Fig. 1A), Bacillus subtilis and Salmonella enterica.
Hope this helps!
why are some types of organisms much more commonly fossilized than others?
Answers
Answer:
The enamel and dentin of teeth are harder than bone and as a result, teeth are more likely to be fossilized than other parts of a vertebrate.
Explanation:
which of the following events occurs during both mitosis and meiosis? pairing of homologous chromosomes alignment of individual chromosomes at the metaphase platecrossing over between homologous chromosomes none of these choices
Answers
The event that occurs during both mitosis and meiosis is the alignment of individual chromosomes at the metaphase plate, which corresponds to the alignment of individual chromosomes at the metaphase plate, option B is correct.
During mitosis, this alignment occurs during metaphase, where the replicated chromosomes align along the equator of the cell. In meiosis, this alignment occurs during metaphase I, where the homologous pairs of chromosomes line up at the metaphase plate. The alignment of chromosomes at the metaphase plate is essential for the proper segregation of genetic material during cell division.
Homologous chromosomes pair up and undergo crossing over during meiosis I, allowing for genetic recombination and increasing genetic diversity. Crossing over involves the exchange of genetic material between non-sister chromatids of homologous chromosomes, further contributing to genetic diversity, option B is correct.
To learn more about mitosis follow the link:
https://brainly.com/question/32255070
#SPJ4
The correct question is:
Which of the following events occurs during both mitosis and meiosis?
A. pairing of homologous chromosomes
B. alignment of individual chromosomes at the metaphase plate
C. crossing over between homologous chromosomes
D. none of these choices
will give brainlist to best asnwer!!
Mitosis and meiosis are two similar biological processes with important differences. They both start with a diploid cell, but end up with very different products. What is the final product for each process?
Answers
Answer:
The final products of mitosis and meiosis are different. Mitosis results in the production of two identical diploid daughter cells, each containing the same number of chromosomes as the parent cell. In contrast, meiosis produces four genetically diverse haploid daughter cells, each containing half the number of chromosomes as the parent cell. The purpose of mitosis is to ensure the growth, development, and repair of tissues in multicellular organisms, while meiosis is necessary for sexual reproduction, which involves the fusion of two haploid gametes (sperm and egg) to form a diploid zygote.
Explanation:
Mitosis is the process by which a cell divides and creates two identical daughter cells. It's like when you cut a piece of cake in half and each piece is the same size and has the same kind of cake. In mitosis, the parent cell starts with two sets of chromosomes (one set from each parent) and ends up with two daughter cells, each with the same two sets of chromosomes.
Meiosis is also a process of cell division, but it creates four different daughter cells, each with only one set of chromosomes (instead of the two sets found in most cells). This is like if you have a basket with pairs of socks, and you randomly take one sock from each pair and put it into four different baskets. Each basket has a different assortment of socks, and none of them have the exact same pairs as the original basket. In meiosis, the parent cell starts with two sets of chromosomes and ends up with four daughter cells, each with one set of chromosomes. This is important for sexual reproduction, because each parent contributes one set of chromosomes to their offspring, creating unique combinations of genetic information.
High pressure usually has what type of weather?
i will give brainliest
Answers
Answer:
dry weather and mostly clear skies. High pressure systems normally associate with dry weather in mostly clear skies which with large old diurnal temperature changes to 2greater radiation at night in greater sunshine during the day
all systems in the body are affected by bed rest or immobility. for the immune system, research has demonstrated that interleukin (il)-1, il-6, and tumor necrosis factor–alpha are increased during immobility or bed rest. what are these mediators associated with?
Answers
Findings suggest that IL-1 and TNF-alpha play an essential role in the acute stage of brain abscess development by regulating the subsequent anti-bacterial inflammatory response and they are increased during
What exactly are TNF and IL-6?
TNF-alpha and interleukin-6 are two cytokines that are important in the regulation of B-cell function (IL-6). They play different roles in B-cell differentiation and can be produced by B cells themselves when stimulated appropriately.
TNF and IL-1 are cytokines that are required for activating the innate immune response, mediating the recruitment, activation, and adherence of circulating phagocytic cells (macrophages and neutrophils), and terminating the innate immune response, respectively.
Therefore, IL-6 can promote the differentiation or proliferation of various non-immune cells.
Learn more about interleukin from the given link.
https://brainly.com/question/28481121
#SPJ4
What are three ways to organize data that you collect during an experiment?
Answers
Make sure you have the right data in the right place
Look back at data and see if any more is needed
Which statement best describes these images
A.b and d are animal and cell
B. A b and d are eukaryotic
C. A and c are prokaryotic
D. A b and c are all plants
Answers
the period of time from about 20 years old to the end of the reproductive years is called
Answers
The period of time from about 20 years old to the end of the reproductive years is called the reproductive age or reproductive phase.
This period typically lasts from the onset of menstruation until menopause, which usually occurs between the ages of 45 and 55. During this phase, individuals are capable of reproducing and may choose to start a family or have children. It is also a time when individuals may experience hormonal changes and fluctuations, as well as potential health issues related to reproductive organs and functions. Proper healthcare, including regular check-ups and screenings, is important during this phase to maintain reproductive health and overall well-being.
The period of time from about 20 years old to the end of the reproductive years is called the reproductive age or fertility period. This phase typically ranges from the onset of puberty, when an individual becomes sexually mature, until the end of their reproductive capabilities. For women, this period usually starts in their late teens or early 20s and lasts until they reach menopause, which commonly occurs between the ages of 45 and 55. For men, the reproductive age can extend from their early teens to their late 40s or early 50s, although sperm quality tends to decline as they age.
To know more about menopause, visit:
https://brainly.com/question/3256449
#SPJ11
construct an explanation based on evidence for how the structure of DNA determines the structure of proteins which carry out the essential functions of life through systems of specialized cells
Answers
Structure and Function. All cells contain genetic information in the form of DNA molecules. Genes are regions in the DNA that contain the instructions that code for the formation of proteins, which carry out most of the work of cells.
Describe how the light-dependent and light-independent reactions work together in photosynthesis
Answers
According to the research, in photosynthesis, through the light-dependent reactions energy is contained in the NADPH and ATP molecules that is used by light-independent reactions.
What is photosynthesis?It is the process that converts solar energy into chemical energy which, stored in cells, allows the formation of carbohydrates and other organic molecules.
In this sense, the light-dependent reactions occur in the thylakoids whose chemical energy is comprised of molecules of two types NADPH and ATP.
On the other hand, light-independent reactions occur in the chloroplast matrix with the intervention of enzymes that intervene in the reduction of CO2 molecules to establish carbohydrates through the energy sources ATP and NADPH.
Therefore, we can conclude that the light-dependent reactions in photosynthesis manufacture ATP and the reducing source NADPH necessary for light-independent reactions.
Learn more about photosynthesis here: https://brainly.com/question/14090371
#SPJ1
Imagine that you collected a sample of fish from a pond. Here is what you caught:
bluegill = 12 individuals
bass = 7 individuals
catfish = 6 individuals
carp = 13 individuals
What would the Shannon diversity value be for this sample?
Answers
The Shannon diversity value for the fish sample is approximately 1.791, indicating a moderate level of diversity.
The Shannon diversity index measures the diversity or evenness of a community by considering the relative abundance of different species. To calculate the Shannon diversity value for the given fish sample, we can use the formula:
H' = -Σ(\(\pi\) * log(\(\pi\)))
Where:
H' is the Shannon diversity value
\(\pi\) is the proportion of individuals belonging to the ith species
Using the data provided, we can calculate the Shannon diversity value as follows:
\(\pi\) for bluegill = 12/38
\(\pi\) for bass = 7/38
\(\pi\) for catfish = 6/38
\(\pi\) for carp = 13/38
Calculating the values and substituting them into the formula:
H' = -( (12/38 * log2(12/38)) + (7/38 * log2(7/38)) + (6/38 * log2(6/38)) + (13/38 * log2(13/38)) )
= 1.791
After performing the calculations, the Shannon diversity value for this sample of fish from the pond is approximately 1.791.
To learn more about diversity follow the link:
https://brainly.com/question/31080631
#SPJ4