Explanation:
(B) They originate from industrial and agricultural production.
PCBs in humans have discovered expanded paces of melanomas, liver cancer, gall bladder cancer, biliary tract malignant growth, gastrointestinal tract disease, and mind malignancy, and might be connected to bosom diseasePCBs are known to cause an assortment of sorts of malignant growth in rodents, mice The most usually watched wellbeing impacts in individuals presented to a lot of PCBs are skin conditions, for example, skin break out and rashesPCB exposures in everybody are not liable to bring about skin and liver impactsThe false statement about PCBs is that they are found at highest concentrations in Inuit women who eat herbivorous caribou. PCBs tend to bioaccumulate and biomagnify in apex predators, not herbivores. So the correct option is A.
Explanation:The statement about PCBs that is false is: A. They are found at highest concentrations in Inuit women who eat herbivorous caribou. This statement is incorrect because PCBs, or polychlorinated biphenyls, bioaccumulate and biomagnify in food chains, meaning that they are found in higher concentrations in apex predators rather than in herbivorous animals. PCBs are industrial and agricultural pollutants that originate from human activities, such as the production of coolant liquids and can cause a variety of health ailments in humans. They are known to persist in the environment for very long periods and accumulate in higher trophic levels of the food chain, thus reaching high concentrations in predatory fish and the animals, including humans, that eat these fish.
There have been numerous studies on this topic, including research by the National Oceanic and Atmospheric Administration (NOAA) in the Saginaw Bay of Lake Huron, which showed that the apex consumer, the walleye, had more than four times the amount of PCBs compared to phytoplankton at the base of the food chain. Birds that eat these fish may have even higher levels. Therefore, populations such as the Inuit, who rely on higher trophic level marine predators, would be more at risk.
Examine the image. Then use the drop-down menu to choose the correct order for the relative age of the features from oldest to youngest -answer “b,w,e,q,k
Answer:
b w e q k
Explanation:
2 answer
explain how hyphae help a fungus absorb food
Answer:
Explanation:
a fungus named penicillin produces a substance that kills the bacteria near it. The mold produces the antibiotic penicillin. How do fungi help plants grow? The hyphae spread underground and absorb water and nutrients from the soil for the plant.
Fungi utilize hyphae with a high surface area-to-volume ratio to efficiently absorb nutrients. They secrete enzymes to externally digest organic matter before absorption. Mycorrhizal associations allow fungi to extend plant root surface area for nutrient exchange and improved disease resistance.
Fungal hyphae are specialized structures that allow fungi to absorb food efficiently due to their high surface area-to-volume ratio. Fungi release hydrolytic enzymes like cellulase into their environment to break down large organic molecules such as polysaccharides, proteins, and lipids into more digestible forms. The smaller molecules resulting from this external digestion are then absorbed through the extensive surface area provided by the branching mycelia, which can grow into tiny soil pores and access nutrients that may be out of reach for other organisms.
In symbiotic associations, known as mycorrhization, fungi extend the surface area of plant roots, aiding them in the uptake of nutrients like phosphate, zinc, and copper, while the fungi receive sugars and other carbon-based nutrients from the plant. This relationship is particularly beneficial in poor soils and can also provide plants with improved resistance against pathogens through physical barriers and defensive mechanisms. Fungi are adept at obtaining nutrition due to this external digestion and absorption method, contrasting with animals that ingest then digest food internally. The adaptability of fungal mycelia, with their vast networks of hyphae, exemplifies the efficiency of this feeding strategy.
All of the following statements referring to the uterine cycle are true except ________.
Question is incomplete. Complete question is as follows:
All of the following statements referring to the uterine cycle are true except ________.
a. estrogen is secreted by the developing follicle in the follicular phase of the cycle
b. FSH and LH directly promote development of the uterine endometrium
c. the corpus luteum is formed from the ruptured follicle after ovulation
d. a decrease in the levels of ovarian hormones signals menstruation
Answer:
b. FSH and LH directly promote development of the uterine endometrium
Explanation:
FSH and LH levels relatively go high from day 1-8 of the ovarian cycle.
FSH stimulates the development of 10-20 follicles resulting in the full maturation of a single dominant follicle- appearing in mid-follicular phase,
High LH and FSH triggered b drop in estrogen and progesterone levels from last cycle. Estrogen level starts to rise as follicular development occurs.
Hence All of the following statements referring to the uterine cycle are true except b. FSH and LH directly promote development of the uterine endometrium
what is immune response
Answer:
I think that it is when you fighting off a sickness :D
Explanation:
The immune response is the body's defense mechanism against foreign substances, involving various immune cells and processes to identify, neutralize, and eliminate pathogens or abnormal cells.
What is immune response?The immune response is a complex series of physiological processes and mechanisms by which the body's immune system recognizes and defends against foreign substances, such as pathogens (e.g., bacteria, viruses), toxins, or abnormal cells. It involves a coordinated effort of various immune cells, including white blood cells, antibodies, and chemical messengers, to identify, neutralize, and eliminate these foreign invaders. The immune response includes both innate immunity, which provides immediate but non-specific defense, and adaptive immunity, which is specific and can develop memory to better respond to future encounters with the same pathogen. Overall, the immune response plays a critical role in protecting the body from harmful substances and maintaining overall health and well-being.
Learn more on immune response here;
https://brainly.com/question/15595309
#SPJ6
The expression 0.5n is equivalent to
0.5 + 0.5 + 0.5... + 0.5.
0.5 times n.
0.5•0.5•0.5... •0.5.
Answer:
0.5 • 0.5 • 0.5 . . . • 0.5.
Explanation:
Which of the following is a characteristic shared by most animals
Collagen supported cells
Non-nuclear DNA
Radial symmetry
asexual reproduction
Answer:
a- Collagen supported cells
Explanation:
took test
The Collagen supported cells represent the characteristic that shared by most animals
What is Collagen supported cells?In the terms of dermis that represent the middle layer of the skin. Here collagen should helped to create the fibrous cells network which we called as the fibroblasts so that the new cells could be grown. Moreover, it plays a vital role for replacing and restoring the dead skin cells. So the attribute that shared by many animals should be that cells that should be Collagen supported.
Learn more about cells here: https://brainly.com/question/20076961
These adaptions make agave plant most suitable to survive in ___ environment
A temperate
B tropical
C desert
D taiga
Answer:
Need more information
Explanation:
Temperate: mild with normal temperatures and average rain
Tropical: lots of rain/ warm like an island (hawaii or jamaica)
Desert: hot and dry
Taiga: cold with lots of trees and mountains
The agave plant is adapted to survive in a desert environment, with specialized features to conserve water.
The agave plant has adaptations that make it most suitable to survive in a desert environment. These adaptations include features such as thick leaves, deep root systems, and the ability to store water to cope with the arid conditions and scarce water availability. Biomes like the tropical wet forests and the taiga are rich in biodiversity, but the deserts are characterized by short growing seasons and scarce water, which is the exact environment where the agave thrives.
In contrast to biodiverse biomes like tropical wet forests or taigas, desert environments present challenges such as limited water and short growing seasons, making the agave's specialized adaptations crucial for its survival.
Two ecology students are studying different things on Isle Royale.
The first student is keeping track of how the number of wolves on the island changes from year to year (but he is not looking at any other species). He is studying a wolf _____.
The second student is evaluating the interactions between moose and wolves on the island (but he is not considering any nonliving factors), and, as such, is studying a(n) _____.
Answer:
In the given case, the first blank is filled with population and the second blank can be filled with community.
Explanation:
In the given case, as the first student is keeping a record of the number of wolves present in a given island and the factors affecting the number of wolves found from time to time on the island shows that the student is studying a population of the wolf.
While the second student is assessing the association of the wolves with the other species like moose shows that the student is studying a community. A population refers to a single species group that thrives within a specific region at a specific time duration. On the other hand, a community refers to the combination of all the species populations found within a specific region.
Use this information to answer questions 6 - 11. Your original population of
200 was hit by a tidal wave and 100 organisms were killed, leaving 36
homozygous recessive out of the 100 survivors. If we assume that all
individuals were equally likely to be wiped out, how did the tidal wave
affect the predicted frequencies of the alleles in the population? Assume
the new population is at equilibrium after the event, so you are comparing
two populations that are at equilibrium to look for changes in allele
frequencies.
what is the frequency of the recessivr allele
Answer:
1. How did the tidal wave affect the predicted frequencies of the alleles in the population?
No changes
2. What is the frequency of the recessive allele?
q= 0.6
Explanation:
If we assume that all individuals were equally likely to be wiped out, that means the frequency/ratio of the gene and genotype of the population will not change. The tidal wave killing 100 out of 200, so it simply makes the population become half of it used to be.
If the population at equilibrium, we can use the Hardy-Weinberg formula to find out the expected frequency of the dominant and recessive alleles. There are 36 homozygous recessives out of 100, so the frequency of the recessive allele will be:
q^2 = 36/100
q= √36/100= 6/10= 0.6
Circulatory systems compensate for _____. _____ Select one: a. temperature differences between the lungs and the active tissue b. the slow rate at which diffusion occurs over large distances c. the problem of communication systems involving only the nervous system d. the need to cushion animals from trauma e. the need that fetal organisms have for maintaining an optimal body temperature
Explanation:
The circulatory system is a network consisting of blood, blood vessels, and the heartThis network supplies tissues in the body with oxygen and other nutrients, transports hormones, and removes unnecessary waste productsThe human circulatory system consists of several circuits: The pulmonary circuit provides blood flow between the heart and lungsThe systemic circuit allows blood to flow to and from the rest of the bodyThe coronary circuit strictly provides blood to the heartMelanoma rates are higher in areas of the United States with a high number of sunny days each year. Melanoma rates have been observed to decrease in some countries in response to public health campaigns that promote regular use of sunscreen. Other types of skin cancer, which are similar to melanoma, are linked to UV exposure. Based on this information, what is the MOST comprehensive hypothesis that you can generate? Please choose the correct answer from the following choices, and then select the submit answer button. a) People who use sunscreen have lower rates of melanoma.b) People who use sunscreen have lower rates of skin cancer in general. c) Skin cancer is caused by chemicals in the skin, and these chemicals are inactivated by sunscreen. d) People who use sunscreen spend more time inside and therefore do not develop skin cancer.
Answer:
Option-A
Explanation:
A hypothesis is a well-educated statement that explains the natural phenomenon based on the observation and evidence showing the possibility for further research or investigation through scientific experiments.
In the given question, the observation is that people who use sunscreen have a lower chance of developing melanoma kinds of cancer, therefore, the predicted hypothesis can be the people who use the sunscreen can have the lower rates of developing melanoma.
Thus, Option-A is correct.
Answer:
dab
Explanation:
In vertebrates, hormone production by the endocrine system is often controlled, either directly or indirectly, by the nervous system. Two endocrine glands in the brain, the hypothalamus and the pituitary gland, play central roles in integrating the nervous and endocrine systems. The hypothalamus receives input from nerves throughout the body and brain, and initiates a response via the pituitary gland. The pituitary gland is made up of the posterior pituitary and anterior pituitary, two separate glands that fuse together during development. Both the posterior pituitary and anterior pituitary release a number of hormones that send signals throughout the body. Some hypothalamic and pituitary hormones, and their abbreviations, are listed below. Hormone Abbreviation thyrotropin-releasing hormone TRH gonadotropin-releasing hormone GnRH antidiuretic hormone ADH thyroid-stimulating hormone (thyrotropin) TSH prolactin PRL follicle-stimulating hormone FSH luteinizing hormone LH Part A - Endocrine glands in the human brain Each of the following phrases describes the structure, function, or regulation of either the hypothalamus, posterior pituitary, or anterior pituitary. Sort the phrases into the appropriate bins depending on whether they describe the hypothalamus, posterior pituitary, or anterior pituitary.
Answer:
If the question was actually pointing these (thyrotropin-releasing hormone TRH gonadotropin-releasing hormone GnRH antidiuretic hormone ADH thyroid-stimulating hormone (thyrotropin) TSH prolactin PRL follicle-stimulating hormone FSH luteinizing hormone LH) as the phrases, then the answer will be
•Thyrotropin-releasing hormone TRH describes ANTERIOR PITUITARY
•Gonadotropin-releasing hormone GnRH describes the HYPOTHALAMUS
•Antidiuretic hormone ADH describes the POSTERIOR PITUITARY
•Thyroid-stimulating hormone (thyrotropin) TSH describes the ANTERIOR PITUITARY
•Prolactin PRL describes the ANTERIOR PITUITARY
•Follicle-stimulating hormone FSH describes the ANTERIOR PITUITARY
•Luteinizing hormone LH describes the ANTERIOR PITUITARY
Explanation:
but if the phrases were to be this
1. Releases oxytocin
2. Synthesizes and releases PRL
3. Synthesizes and releases TSH
4. Synthesizes some hormones that are released into blood vessels bound for another gland
5. Regulated by hormones released into portal blood vessels
6. Is an extension of the Hypothalmus
7. Synthesizes oxytocin and ADH
8. Integrates nervous and endocrine systems
(...as found from another source),
the answers will be
1. Posterior Pituitary
2. Anterior Pituitary
3. Anterior Pituitary
4. Posterior Pituitary
5. Posterior Pituitary
6. Posterior pituitary
7. Posterior pituitary
8. Hypothalamus
....respectively.
Represents the transfer of energy through a series of organisms in a community. This energy flow from one trophic level to the other is known as.. A) energy pyramid B) The Tropics C) food web D) food chain
Answer:
I believe the answer is A) energy pyramid
Explanation:
It's talking about trophic levels, as opposed to individual organisms.
Answer: A
Explanation:
Elements that typically attract electrons _
the elements that typically take electrons are generally found in the right, upper portion of the periodic table and include fluorine, oxygen and nitrogen.
hope this helps:)
Answer:
halogens I think so
Explanation:
pls follow me if this is right
How many chromosomes are found in a primary oocyte?
Answer: The answer should be 46 chromosomes.
Explanation:
Answer:
46 chromosomes.Explanation:
Mixed cranial nerves containing both motor and sensory fibers include all except _________
You are called to the scene of a man down. Dispatch reports the man is pulseless and bystanders are doing CPR. According to the NREMT Cardiac Arrest Management/AED skill sheet, which of the following sequences is appropriate?
A. Check for responsiveness, Assess for breathing, Check carotid pulse , put your gloves on
B. Question the bystanders, direct them to stop CPR , check for pulse and then attach the AED, Begin chest compressions
C. Turn on power to AED, open the patient's airway, insert an adjunct and then analyze the rhythm while doing chest compressions
D. Check breathing and pulse simultaneously, patient is pulseless and apneic, immediately begin chest compressions
The correct sequence for cardiac arrest management is to check breathing and pulse simultaneously and if the patient is pulseless and not breathing, immediately begin chest compressions.
The appropriate sequence for managing cardiac arrest according to the NREMT Cardiac Arrest Management/AED skill sheet is: D. Check breathing and pulse simultaneously, if the patient is pulseless and apneic, immediately begin chest compressions. When arriving on the scene where a person is pulseless, and bystanders are performing CPR, the steps should be rapidly executed without delay. Confirming the absence of pulse and breath allows for the urgent initiation of CPR. If an Automated External Defibrillator (AED) is available, it should be applied as soon as possible after starting chest compressions.
No water molecules are moving across the barrier between the two compartments. a.A net movement of water molecules continues to add water to the right-hand compartment. b.None of the answer options is correct. c.A net movement of water molecules begins to add water to the left-hand compartment. d.Water molecules move randomly across the barrier with no net addition of water to either side.
Answer:
-Water molecules move randomly across the barrier with no net addition of water to either side.
Explanation:
Which of the following best describes conditions at equilibrium?
-No water molecules are moving across the barrier between the two compartments.
-A net movement of water molecules continues to add water to the right-hand compartment.
-A net movement of water molecules begins to add water to the left-hand compartment.
-Water molecules move randomly across the barrier with no net addition of water to either side.
-None of these choices accurately describe conditions at equilibrium.
An equilibrium can be described as condition in which there is no net movement of substances across two sides. For example, if A and B are in equilibrium for a particular molecule, the rate of movement of the molecule from A to B is the same as the rate of movement of the molecule from B to A.
Hence, the option that best described conditions at equilibrium is the one in which water molecules move randomly across the barrier with no net addition of water to either side.
how are biomes related to ecosystems?
Answer:
An ecosystem exists within a biome. Biomes are home to many species of animals, which interact with one another to create an ecosystem.
Explanation:
An ecosystem is defined as "the interaction of plants and animals with nonliving things and each other." A biome is defined as "a large region of the world that has similar plants, animals and other organisms that are adapted to the terrain and weather of that region."
A heterozygous blue-nose pit bull breeds with another blue nosed pit bull. Their
litter contains 2 puppies with black noses. What are the genotypes of the parents?
Answer:
Bb and bb
Explanation:
one parent might be a carrier of the black-nose gene and the other parent is not OR both parents can be carriers of the black-nose gene.
The genotypes of the blue-nose pit bull parents that produced puppies with black noses are either Bb and bb or Bb and Bb.
Explanation:If a heterozygous blue-nose pit bull breeds with another blue nosed pit bull and their litter contains 2 puppies with black noses, we first need to make some assumptions about the genetics involved based on typical Mendelian inheritance. Let's assume that 'B' represents the dominant blue nose allele and 'b' represents the recessive black nose allele. Since we know that one of the parents is heterozyous (Bb) and the offspring have black noses (bb), the other parent must also carry at least one recessive 'b' allele to produce bb offspring. For both puppies to have black noses, both parents must have contributed a 'b' allele, making the genotypes of the parents Bb and bb or Bb and Bb.
Select the correct answer.
What is the first thing you should look for on a food label?
O A.
calories from fat
B.
calories
serving size
D. number of servings
Reset
Next
Answer:
B. Calories
Explanation:
A terrestrial animal species is discovered with the following larval characteristics: exoskeleton, system of tubes for gas exchange, and modified segmentation. A knowledgeable zoologist should predict that the adults of this species would also feature __________.
a. eight legs.b. two pairs of antennae.c. a sessile lifestyle.d. an open circulatory system.e. parapodia.
Answer:
A knowledgeable zoologist should predict that the adults of this species would also feature d. an open circulatory system
Explanation:
Having an open circulatory system means that the organisms with this type of systems don't have true blood but a mix of different fluids. It is common among small animals such as arthropods. Larval characteristics such as exoskeleton, system of tubes for gas exchange, and modified segmentation, make us think of an open circulatory system, because we are in need of that "extra" system of tubes for gas exchange.
The cortical regions indicated by e are involved in what functions?
The question is incomplete. The complete question is:
The cortical regions indicated by E are involved in which functions?
A. The production and interpretation of language.
B. The storage of motor patterns for skilled movements of skeletal muscles.
C. The generation of emotional responses.
D. The control centers for homeostatic and endocrine functions.
Answer:
A. The production and interpretation of language.
Explanation:
The arcuate fasciculus links the area of Wernicke with the area of Broca (posterior lobe of the lower front). The E part in the image image shows Broca's and Wernicke's area which functions for producing and interpreting language.
The region around Broca is responsible for generating meaningful language. Input from the Broca region goes to the motor cortex to activate the complex muscle movements that are required for speech.
Hence, the correct option is A.
Wich of the following is most associated with charlemagne?
Question- Wich of the following is most associated with charlemagne?
Answer- Charles the Great was the emperor who built an empire reaching across France, Germany, and part of Italy around 800. He loved battle and spent much of his 46 -year reign fighting Muslims, Saxons, Avars, Slavs, and Lombards. His conquests reunited much of the old Roman Empire. Charlemagne became the "king of the Romans" because Pope Leo III called on him for help against rebellious nobles in Rome. The Frankish armies marched south and crushed the rebellion. The Pope showed his gratitude by placing a crown on Charlemagne's head and proclaiming him Emperor of the Romans. "missy dominici" were the officials sent out by Charlemagne to check on roads, listen to grievances, and see that justice was done. He introduced the missi to "administer the law fully and justly in the case of the holy churches of God and of the poor, of wards and of widows, and of the whole people."
Which of the following is associated with the planarian's nervous system?
regeneration
flame cells
diffusion
ganalia
Answer:
ganalia
Explanation:
During the process of cellular respiration, water becomes oxygen.
True
False
The heartworms that can accumulate within the hearts of dogs and other mammals have a pseudocoelom, an alimentary canal, and an outer covering that is occasionally shed. To which phylum does the heartworm belong? a. Platyhelminthes b. Annelida c. Arthropoda d. Nematoda
Answer:
Nematode.
Explanation:
Heartworms belongs to phylum Nematoda, their biological name is Dirofilaria immitis. Their body structure is a tiny thread-like parasite roundworm. Adult heartworms always live in the lung arteries and the heart of the dogs and other mammals, it can spread from one species to another by the mosquito bites. Some characteristics of Nematoda phylum are:
1) Their body structure is triploblastic, bilaterally equal and cylindrical in shape.
2) They show a tissue-level organization.
3) Their body keeps a pouch or pseudocoelom.
Claire extends her left calf muscle then relaxes it, concentrating on the tension leaving the muscle as she does so. Claire then tenses and relaxes her left quadriceps, again noting the flow of tension from the area. Claire is engaged in:
A. systematic desensitizationB. mindfulnessC. biofeedbackD. progressive muscle relaxation
Answer:
Progressive muscle relaxation
Explanation:
Progressive muscle relaxation is a relaxation technique used to relieve stress and tension. It is done by tensing one's muscles while breathing in and relaxing it while breathing out. This process helps body more relaxed and hence less tensed.
Progressive muscle tension helps to make one aware of the sensations connected to stress and tension and further helps to identify and manage the impact of the tension or stress.
Generally, progressive muscle tension has been shown to relieve tension, stress, pain and anxiety.
From the explanation, Claire is engaged in progressive muscle relaxation.
If you see an animal with curly red hair, the curly red hair is ?
Answer:
part of the animal
Explanation:
lol
Curly red hair on an animal is an example of the physical traits typical of mammals, which include having hair. The reference incorrectly suggests that hair is unique to rabbit evolutionary history; in fact, all mammals have hair. This feature can also be involved in behaviors such as communication, as seen when cats raise their fur as a warning.
Explanation:If you see an animal with curly red hair, this is an example of the physical traits that can be observed in mammals. Hair is a characteristic feature that has evolved in mammals as part of their unique traits. While the reference about a rabbit suggests that hair is exclusive to their evolutionary history, in reality, hair is common to all mammals, not just rabbits. This is backed by the fact that most mammals share several traits that are typical to the class Mammalia, such as having hair, three middle ear bones, and mammary glands used for feeding their young.
Another aspect related to animal hair is behavior for communication, such as when a cat communicates a warning by raising its fur. This behavior indicates that the cat is feeling threatened and is trying to make itself appear larger and more dangerous as a deterrent against potential predators. This is an example of how physical traits, such as hair, not only serve a physiological function but also play a role in animal behavior and communication.
One phenotypic trait used for species identification and description is the analysis of the types and proportions of the fatty acids present in the cytoplasmic and outer membranes. The methodology employed is often nicknamed FAME.A. TrueB. False
Answer: A. True
Explanation:
Fatty acid methyl esters (FAME) are a type of fatty acid ester derived from the transesterification of methanol fats.
Every microorganism has its own specific FAME profile (microbial fingerprints). Upon esterification of triglycerides, fatty acids and some other lipids of certain cultivated microbes, they are volatile enough to analyse with gas chromatography that is used to establish FAME profile. These profiles can be used as a method for microbial source tracking (MST) to classify strains of pathological bacteria and to characterise new bacterial organisms.
Hence, one phenotypic trait can be identified on the basis of the fatty acids present in the cytoplasmic and outer membranes.
Hence, the given statement is true.