among annelids, the class is characterized by the presence of many parapodia.
Answers
The class of annelids that is characterized by the presence of many parapodia is Polychaeta, which is one of the three main classes of annelids.
The parapodia are lateral, paired, paddle-like appendages that function in locomotion, respiration, and feeding. Polychaetes are also known for their well-developed head with sensory organs, including eyes, antennae, and tentacles.
They have a segmented body with chaetae or bristles on each segment, which aid in movement and attachment to surfaces. Most polychaetes are marine, living in a variety of habitats from shallow waters to the deep sea. They play important ecological roles as decomposers, filter feeders, and predators, making them a crucial part of marine ecosystems.
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Related Questions
Hemoglobin is:
1) hormone;
2) Enzyme
3) protein;
4) Amino acid
HELPPP PLEASE!!!!
Answers
Answer:
The oxygen- carrying pigment and predominant protein in the RBC.
Question 12
1 pts
Which diagram models a hypothetical situation in every location on Earth would have 12 hours of
daylight and 12 hours of darkness per day?
Answers
Answer:b
Explanation:Bc it’s something
part of the cytoskeleton involved in cellular movement
Answers
Cell mobility is supported by hemocytes. For instance, microtubules sliding against one another causes cilia and (eukaryotic) flagella to move.
Hemocytes from Drosophila melanogaster are an excellent resource for analyzing important facets of immune cell movement. The cytoskeleton not only performs this structural function, but it also controls how cells move. Microtubules are expected to create a polarised network that enables the transport of organelles and proteins throughout the cell, while the actin cytoskeleton is assumed to supply protrusive and contractile forces. The cytoskeleton's core duties include controlling how cells are shaped, supplying mechanical support and integrity, allowing for cell mobility, and facilitating the intracellular movement of supramolecular structures, vesicles, and even organelles.
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Fill in the Blanks
___ is the process where water diffuses into or out of the cell. In ___ solutions water will enter the cell causing it to swell, and in ____ solutions water will leave the cell causing it to crenate or shrink. ____ is maintained in ____ solutions because the water entering the cell is equivalent to the water leaving the cell.
Isotonic Hypotonic Hypertonic
Equilibrium Glucose Concentration
Cell Membrane Diffusion Osmosis
Answers
which of the following is a main factor causing the observed natural distributions of plants and animals?
Answers
One of the main factors causing the observed natural distributions of plants and animals is environmental factors that includes Climate ,Human interference, Geological factors and Competition and predation.
The correct option is E.
Climatic factors such as temperature, precipitation, humidity, and sunlight availability influence the distribution of plants and animals. Different species have specific temperature and moisture requirements, and they tend to be found in regions that provide suitable climatic conditions for their survival and reproduction. The physical features Human interference and habitat destruction of the land, such as mountains, rivers, and oceans, can create barriers or corridors for the movement of organisms. These geographic features can influence species distribution by limiting or facilitating gene flow and migration.
The presence of suitable habitats for different species is a significant factor in determining their distribution. Different organisms have specific habitat requirements, such as forested areas, grasslands, wetlands, or marine environments. The availability and quality of these habitats influence the presence or absence of species in a particular area. The presence and interactions with other species, including competitors, predators, prey, and symbiotic partners, can affect the distribution of organisms. These interactions can create niche differentiation and spatial segregation among species, leading to specific distribution patterns.
The given question is incomplete the complete question is ----
Which of the following is a main factor causing the observed natural distributions of plants and animals?
A) Climate and weather patterns.
B) Human interference and habitat destruction.
C) Geological factors and land formations.
D) Competition and predation.
E) All of the above.
Hence , E is the correct option
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Generally, animals cannot digest (hydrolyze) the glycosidic linkages between the glucose molecules in cellulose. how then do cows get enough nutrients from eating grass?
Answers
Microorganisms in their digestive tracts hydrolyze the cellulose to individual glucose units.
Cellulose- The stable formation of plant cell walls is greatly aided by cellulose, a hard, fibrous, and water-insoluble polysaccharide. The fibrils (bundles of microfibrils) and microfibrils (bundles of polysaccharide) made up of cellulose chains make up the plant cell wall.
Glucose- The primary form of sugar in the blood, glucose serves as the body's cells' principal source of energy. Glucose may be produced by the body from other chemicals or it can be obtained from the meals we eat. The circulation carries glucose to the cells. Insulin is one of many hormones that regulate blood glucose levels.
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which quantities indicate a direction and a magnatude
Answers
A quantity with both magnitude and direction is called a vector. A quantity that may be fully defined by both magnitude and direction is referred to as a vector quantity.
Distance is only defined by magnitude, whereas displacement depends on both direction and magnitude. One illustration of a vector quantity is displacement. An illustration of a scalar quantity is distance. Any quantity with both magnitude and direction is a vector. The amount that encapsulates the force's strength is known as its magnitude. Consider the following scenario: the force is 10 N in the east. "towards east" denotes direction, while "10" denotes the force's magnitude. Magnitude can be thought of as simply the "value" or "amount" of any species quantity.
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In this assignment, you will create a poster with an illustration that models stem cell division and differentiation. Your poster should include a title, an illustration, and brief descriptions of stem cells, stem
cell division and differentiation, and the role of specialized cells in complex organisms, such as humans.
You will also type one to two paragraphs summarizing the information from your poster.
Please do a poster !!! And help
Answers
The poster illustrating the models of stem cell division and differentiation is found in the attachment.
What are stem cell division and differentiation?Stem cell division produces daughter cells. These daughter cells either develop into fresh stem cells or into differentiated cells with a more specific purpose, like bone, blood, brain, or heart muscle cells.
Through stem cell differentiation, a cell can become more specialized by switching from growth to specialization. This entails a series of modifications to metabolic activity, signal receptivity, membrane potential, and cell morphology.
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Lipids are considered the building blocks of plasma membranes. What could be the reason a
cell is unable to synthesize lipids?
Answers
Answer:
phospholipids
Explanation:
The fundamental building blocks of all cell membranes are phospholipids which are amphipathic molecules, consisting of two hydrophobic fatty acid chains linked to a phosphate-containing hydrophilic head group.
How does telomerase prevent linear chromosomes from shortening during replication?
Match the words in the left column to the appropriate blanks in the sentences on the right.
RNA cut
5'---> 3' addition
3' ----> 5' DNA
Telomerase binds to the overhang at the end of a chromosome. Once bound, and using its ________ template as a guide, it begins catalyzing the ______ of deoxyribonucleotides to the overhang in the _________ direction, lengthening the overhang. This creates a single strand of DNA that is then used as a template on which primase, _________ polymerase, and ligase add deoxyribonucleotides to the lagging strand in the ________ direction, restoring the lagging.
Which of the following cell types is likely to demonstrate the lowest level of telomerase activity?
A. Somatic cells
B. Cancer cells
C. Germ cells
D. Somatic cells, germ cells, and cancer cells are likely to demonstrate identical levels of telomerase activity.
Answers
Telomerase is a protein that binds to the overhang at the end of a chromosome. Once bound, it starts catalyzing the addition of deoxyribonucleotides to the overhang in the 5' -> 3' direction, thereby lengthening it.
Telomerase binds to the overhang at the end of a chromosome. Once bound, and using its RNA template as a guide, it begins catalyzing the addition of deoxyribonucleotides to the overhang in the 5'---> 3'direction, lengthening the overhang. This creates a single strand of DNA that is then used as a template on which primase, DNA polymerase, and ligase add deoxyribonucleotides to the lagging strand in the 3' ----> 5' direction, restoring the lagging.
The correct option is A; Somatic cells , Connective tissue, skin, blood, bones, and internal organs are all made up of somatic cells. Muscle cells, blood cells, skin cells, and nerve cells are a few examples.
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Describe how the introduction of the Burmese python has affected mammal diversity in the Everglades and how these losses may affect other animals not preyed upon by the python.
Answers
Answer:
Explanation:
.
How can someone reduce CO2 from being introduced into the atmosphere?
Group of answer choices
a photosynthesizing
b carpooling
c burning fossil fuels
d respirating
Answers
Answer:
It's B=carpooling
Explanation:
why is tbp considered to be a universal transcription factor?
Answers
TBP is considered to be a universal transcription factor because it binds to the TATA box, which is present in the promoter region of most eukaryotic genes.
What is transcription?Transcription is a biological process that involves the conversion of DNA sequence information into RNA sequence information. This process is accomplished with the help of an enzyme called RNA polymerase, which synthesizes RNA from a DNA template. Transcription factors are proteins that bind to DNA and control the transcription of genes. They are critical regulators of gene expression and play an essential role in the regulation of many cellular processes.
TBP, or TATA-binding protein, is a transcription factor that binds to the TATA box, which is present in the promoter region of most eukaryotic genes. TBP is considered to be a universal transcription factor because of its role in initiating transcription at the TATA box.
In summary, TBP is considered to be a universal transcription factor because it binds to the TATA box, which is present in the promoter region of most eukaryotic genes.
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In which type of macromolecule do mutations occur in humans?
Answers
Mutations occur in all types of macromolecules, including proteins, nucleic acids, lipids, and carbohydrates. However, mutations in nucleic acids (DNA and RNA) are the most significant as they lead to changes in the genetic information that is passed on to future generations.
DNA, the genetic material in most organisms, is a long chain of nucleotides that consists of a sugar, a phosphate group, and a nitrogenous base. The sequence of nucleotides determines the genetic code that is responsible for the development and function of an organism. A change in the nucleotide sequence, or a mutation, can have a variety of effects depending on the location and nature of the mutation.
Mutations in DNA can be classified as either point mutations or chromosomal mutations. Point mutations occur when a single nucleotide is changed, inserted or deleted in the DNA sequence. These can lead to different types of changes, such as a change in the amino acid sequence of a protein or changes in gene expression. Chromosomal mutations involve changes in the structure or number of chromosomes, which can lead to genetic disorders or developmental abnormalities.
Mutations in DNA can occur spontaneously during DNA replication, or they can be induced by various factors, including radiation, chemicals, and viruses. Certain mutations can also be inherited from parents, and these can lead to genetic disorders such as sickle cell anemia, cystic fibrosis, and Huntington's disease.
In conclusion, mutations can occur in all types of macromolecules, but mutations in DNA have the most significant impact as they can alter the genetic information that is passed on to future generations. Understanding the nature and effects of mutations is essential in the fields of genetics and medicine, as it can help in the diagnosis, prevention, and treatment of genetic disorders.
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what do you call humid air mass that forms over water in cold areas?
Answers
The ability to produce language is a function of _________, whereas the ability to understand language is a function of _________.
Answers
The ability to produce language is a function of Broca's area, whereas the ability to understand language is a function of Wernicke's area.
What distinguishes Wernicke's territory from Broca's area?In essence, Wernicke's area strives to ensure that the language makes sense, but Broca's area attempts to guarantee that the language is produced in a fluent manner. The Wernicke-Geschwind model, which was later suggested by neurologist Norman Geschwind, built on this understanding of language.
Broca's area is situated in the neocortex's posterior-inferior frontal convexity, whereas Wernicke's area is restricted to the general region where the parietal, occipital, and temporal lobes converge. For the majority of people, the left hemisphere is where these areas function predominantly in terms of language.
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Distinguish between meiosis and mitosis in terms of:
a. Purpose of the division
b.Type of parent cells
c. Are the daughter cells genetically identical or different?
d. Are the daughter cells haploid or diploid?
e. Number of daughter cells
f. Number of divisions
Answers
What is the impact of life skill to you? A. To be able to create problems B. To be self assertive. C. To be influenced by friends D. To maximize risk in life situation.
Answers
Answer:
To self assertive
Explanation:
Gives you confidence and advance on you're own personality and views.
Part 4 - Natural Selection and Adaptations
3 of 113 of 11 Items
Item 3
A scientist studied a snail population that had a variation of shell colors. The number of each differently colored snail shell was recorded. The graph shows the data the scientist collected.
Over time, the rocks on which the snails lived became covered with dark-colored seaweed.
Which graph best represents the range of colors in the snail population that resulted from natural selection after the dark-colored seaweed covered the rocks?
Answers
There are different types of natural selection. When one of the extremes phenotypes is being favored, directional selection is going on. Meanwhile, balancing selection increases the proportion of intermediate phenotype.
-----------------------------
Since I do not have the graphs, I will set different potential scenarios
Let us assume the snails shell has three phenotypes: light brown, brown, and dark brown.Light brown and dark brown are the extreme phenotypesLet us also assume that seaweed is brown-colored.Scenario 1: More light brown individuals than brown and dark brown
Probably after the dark-colored seaweed covered the rocks, snails needed to camouflage to avoid predation. So they must have suffered a change in color from light brown to dark brown.
Since this new trait is beneficial, natural selection favored it.
So animals change from being light brown to dark brown.
The type of natural selection acting here is directional selection.
A population that is under the effects of directional selection, experiences an increase in the proportion of individuals expressing an extreme phenotype, different from the original one.
In these cases, interactions between living organisms and the environment modify in the same direction.
So, the most abundant individuals turned from being light brown to being dark brown.
After dark-colored seaweed covered the rocks, the number of dark brown individuals increased, and the light brown individuals decreased.
**********************
Scenario 2: More brown individuals than light brown and dark brown
This is the same situation as before. In this case, there were more brown individuals than snails expressing extreme phenotypes.
**********************
Scenario 3:
Now let us assume three different phenotypes: Yellow, brown and greyYellow and Grey are the extreme phenotypesSeaweed is brown-colored.Let us suppose that the original number of individuals was higher for one of the extreme traits, either yellow or grey.
After the seaweed-covered rocks, snails needed to camouflage to avoid predation, so they changed their color from yellow or grey to brown.
In this scenario, the intermediate phenotype is being favored by natural selection over the extreme phenotypes.
Balancing selection -or Stabilizing selection-, decreases the number of individuals expressing the extreme phenotype and favors individuals that exhibit medium-range characteristics. These are the ones that get to survive. Selective pressure is against h0m0zyg0tes.
In this case, the number of individuals expressing yellow or grey shells decreases, while individuals with brown color increase.
In the attached files you will find graphs for the three scenarios.
--------------------------
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Identify a country where the age profile of the population and the incidence of HIV/AIDS are most likely to make it difficult for that society to care adequately for the young people.
Cote D’Ivoire
Tanzania
Angola
Uganda
Answers
Uganda is a country where the age profile of the population and the incidence of HIV/AIDS make it challenging for society to adequately care for young people. The combination of a high youth population and a significant HIV/AIDS burden places a strain on Uganda's resources and social systems.
Uganda has a relatively young population, with a significant proportion of the population being under the age of 18. This puts pressure on providing adequate education, healthcare, and social support systems to meet the needs of the young population.
Furthermore, Uganda has been severely affected by the HIV/AIDS epidemic. The country has experienced high prevalence rates, and the impact of the disease has resulted in increased mortality rates and a significant number of orphaned children. The loss of parents due to AIDS-related illnesses leaves many young people without proper family support and exposes them to various vulnerabilities.
The combination of a large youth population and the burden of HIV/AIDS makes it challenging for Uganda to adequately care for its young people. It requires comprehensive efforts in healthcare, education, social services, and support networks to address the unique needs and challenges faced by young individuals affected by the HIV/AIDS epidemic.
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Cuáles son las características de la vida que no están presentes en un virus?
Answers
Answer:
을 수 있는 것입니다 수 있는 것입니다 수 있는 것입니다 수 있는 것입니다 수 있는 것입니다 것입니다
Explanation:
I'm actually a Korean I cannot understand that what you said.
What are causes of food security? Which one is the main one?
Answers
Answer:Causes for food security
Unemployment can also negatively affect a household's food security status. High unemployment rates among low-income populations make it more difficult to meet basic household food needs.
Food Insecurity
Economic Stability.
Education.
Health and Health Care.
Neighborhood and Built Environment.
Social and Community Context.
Explanation: i DIO! would like brainly for this answer
1. For each of the following genotypes, give all possible gametes. A gamete would be
haploid for each trait (a single letter like G or t) while the genotype of an individual
will be diploid (two letters like Gg or tt).
a. BB
b. Bb
c. Tt
d. TT
Answers
Answer:
A
Explanation:
Which scenario would lead to the highest filtration rate from the glomerulus in the kidney?
Vasoconstriction of afferent arteriole & vasoconstriction of efferent arteriole
Vasodilation of afferent arteriole & vasoconstriction of efferent arteriole
Vasodilation of afferent arteriole & vasodilation of efferent arteriole
Vasoconstriction of afferent arteriole & vasodilation of efferent arteriole
Answers
The scenario that would lead to the highest filtration rate from the glomerulus in the kidney is the **vasodilation of the efferent arteriole** and **vasoconstriction of the afferent arteriole**.
In this scenario, the afferent arteriole (the blood vessel bringing blood into the glomerulus) constricts, while the efferent arteriole (the blood vessel taking blood away from the glomerulus) dilates. This combination of events increases the pressure within the glomerulus, thus promoting a higher filtration rate of blood through the glomerular capillaries. The increased filtration rate helps the kidney to filter waste products more efficiently and maintain proper electrolyte balance in the body. It is important to note that other factors, such as blood pressure and hormones, can also affect the glomerular filtration rate.
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4 points
During a third-trimester ultrasound, what would a doctor expect to
observe in a fetus? *
Answers
Answer:
it is might be wrong....
Explanation:
Third-trimester ultrasounds can examine the placenta and the position of the fetus. Sometimes an ultrasound is part of a test called a biophysical profile (BPP) to see whether the fetus is getting enough oxygen. The BPP examines the baby's breathing, movement, amount of amniotic fluid, tone, and heart rate response.
During a lunar eclipse, what blocks the light from hitting the moon's surface?
A-the Sun
B-another planet
C-the Earth
D-the Moon
Answers
Answer:
Lunar Eclipse: The moon moves in an orbit around Earth, and at the same time, Earth orbits the sun. Sometimes Earth moves between the sun and the moon. When this happens, Earth blocks the sunlight that normally is reflected by the moon. (This sunlight is what causes the moon to shine.)
Explanation:
PLZ GUYS I DONT KNOW WHAT TO WRITE ,I NEED UR HELP
I need a 2 complex questions about human overpopulation
Answers
Answer:
1.) Is over population a problem only in areas where population density is high?
2.) why are developing countries experiencing rapid population growth while developed countries are growing more slowly or not at all?
Answer:
Is overpopulation a problem only in areas where population density is high?
What is the connection between population growth and climate change?
Which of the following is not a transboundary health hazard along the u.s.-mexico border? a. abandoned tires b. raw sewage c. animal carcasses d. hazardous waste
Answers
Answer:
A) abandoned tires
Explanation:
Abandonded Tires are not a transboundary health hazard. Exposure to the vapors emitted by raw sewage can lead to gastroenteritis and E.Coli. Dead animal carcasses can carry several diseases that are detrimental or even deadly for humans. Hazardous substances may irritate the skin or eyes, make it difficult to breathe, and even cause cancer.
Answer:
a
Explanation:
ed
Which term describes a single female arctic The group of polar bears that live along the eastern coast of Russia makes upfox?
Answers
The term that describes a single female arctic fox is a vixen.
A vixen is a female fox, including the arctic fox, that is not pregnant or nursing young. It belongs to the Canidae family and is found in the tundra and other Arctic regions of the Northern Hemisphere.The Arctic fox is a small, compact, and sturdy mammal that can survive in some of the world's harshest environments.
The population of Arctic foxes that lives along the eastern coast of Russia is not referred to as a group of polar bears. It is known as a population, a community, or a family.A population is a group of animals of the same species that live in the same area and interact with one another.
A family of arctic foxes is made up of a male and female adult and their offspring. They live together in underground dens that are used for shelter and protection.Arctic foxes are considered a keystone species in the Arctic region because they play a crucial role in the ecosystem. They feed on small animals like lemmings and voles, which helps to regulate their populations. In addition, they are a food source for larger predators like wolves and polar bears, which helps to maintain balance in the food web.
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Prehensile tails are? present in catarrhine primates. common in platyrrhines. made strictly of muscle. present in most primates.
Answers
Platyrrhines are the primates that belonging to the parvorder Platyrrhini. They are characterized by having prehensile tail a broad, and flat nose and with the sideways-facing nostrils. They have the prehensile tails, which are the long, grasping tails.
Despite its usefulness, the prehensile tail is also found only in the two groups of the primates: Cebus – the capuchin monkeys– and the atelines, a group that is includes the howler (Alouatta spp.) and the spider (Ateles spp.) the monkeys.
What primates have the prehensile tails?
The only primate the genera (Figure 1) that possess prehensile tails are the spider monkeys (Ateles), woolly spider and the monkeys (Brachyteles), howler monkeys (Alouatta), the woolly monkeys (Lagorix), and the capuchin monkeys (Cebus)
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