Answers
Answer:
lthough rarely eaten by humans, tunicates are an important link in the food chain and thus indirectly provide humans with a source of food. Tunicates contain some unusual chemicals, and some of these may prove useful as drugs. Tunicates are considered acraniate chordates because tunicates and chordates have the following features in common: a notochord; a dorsal, hollow nerve cord; and pharyngeal gill slits at some time in their lives.
Explanation:
Related Questions
What are the basic needs for germinating seeds
Answers
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There are 434 trees in a 12 square meter area. What is the population density?
Answers
Answer:
36 1/6
Explanation:
434÷12=36 1/6
population density is number of trees in one square meter
Based on the food web above, describe the most direct impact of a decrease in zooplankton population caused by microplastics.
Answers
Answer:
Microplastics are abundant and widespread in the marine environment. They are a contaminant of global environmental and economic concern. Due to their small size a wide range of marine species, including zooplankton can ingest them. Research has shown that microplastics are readily ingested by several zooplankton taxa, with associated negative impacts on biological processes. Zooplankton is a crucial food source for many secondary consumers, consequently this represents a route whereby microplastic could enter the food web and transfer up the trophic levels. In this review we aim to: 1) evaluate the current knowledge base regarding microplastic ingestion by zooplankton in both the laboratory and the field; and 2) summarise the factors which contribute to the bioavailability of microplastics to zooplankton. Current literature shows that microplastic ingestion has been recorded in 39 zooplankton species from 28 taxonomic orders including holo- and meroplanktonic species. The majority of studies occurred under laboratory conditions and negative effects were reported in ten studies (45%) demonstrating effects on feeding behaviour, growth, development, reproduction and lifespan. In contrast, three studies (14%) reported no negative effects from microplastic ingestion. Several physical and biological factors can influence the bioavailability of microplastics to zooplankton, such as size, shape, age and abundance. We identified that microplastics used in experiments are often different to those quantified in the marine environment, particularly in terms of concentration, shape, type and age. We therefore suggest that future research should include microplastics that are more representative of those found in the marine environment at relevant concentrations. Additionally, investigating the effects of microplastic ingestion on a broader range of zooplankton species and life stages, will help to answer key knowledge gaps regarding the effect of microplastic on recruitment, species populations and ultimately broader economic consequences such as impacts on shell- and finfish stocks.
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In what ocean zone are you most likely to find creatures that are bioluminescent (create their own light)?
Question 1 options:
Epipelagic zone
Bathyal zone
Abyssal zone
Answers
using 18o as the basis of your discussion, explain how we know that the oxygen released in photosynthesis comes from water
Answers
The use of 18O, a heavy isotope, as a tracer to monitor the fate of oxygen atoms during photosynthesis supported van Niel's notion that oxygen generated from photosynthesis derives from water. The investigations revealed that only when the tracer was derived from water was the O2 from plants labeled with 18O.
Plants absorb carbon dioxide (CO2) and water (H2O) from the air and soil during photosynthesis. Water is oxidized within the plant cell, which means it loses electrons, but carbon dioxide is reduced, which means it receives electrons. This converts water to oxygen and carbon dioxide to glucose. Photosystem II uses the energy from the sun to extract electrons from water molecules via proteins and enzymes.
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When the carbohydrate cellobiose is digested into two glucose monosaccharide sugars (by cellulase in certain fungal species), the resulting glucose monomers are properly defined as: A. the catalysts
B. the substrates
C. the enzymes
D. the reactants
E. the products
Answers
When the carbohydrate cellobiose is digested into two glucose monosaccharide sugars (by cellulase in certain fungal species), the resulting glucose monomers are properly defined as the products
The correct answer is option E.
When the carbohydrate cellobiose is digested into two glucose monosaccharide sugars by cellulase in certain fungal species, the resulting glucose monomers are properly defined as the products.
In a chemical reaction, reactants are the starting materials or substances that undergo a change, while products are the resulting substances formed after the reaction. In this case, cellobiose is the substrate, which is the molecule that undergoes the enzymatic reaction. Cellulase is the enzyme responsible for catalyzing the digestion of cellobiose into glucose monomers.
The enzyme cellulase acts as a catalyst in the reaction, facilitating the breakdown of cellobiose into glucose. Catalysts are substances that increase the rate of a chemical reaction without being consumed or permanently changed themselves. However, in the context of the given question, the glucose monomers produced are the final result or product of the enzymatic digestion process.
Therefore, in the digestion of cellobiose, the resulting glucose monomers are correctly identified as the products (option E).
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1. Over time, the climate of an island became drier, which resulted in changes to the populations of various island finch species. Finch populations with a certain beak shape thrived, while those not having that beak shape decreased, Which of the following describes a necessary condition for thesechanges in the finch populations to occur?
Answers
Answer:
A necessary condition for the changes in the finch populations to occur in response to the drier climate would be:
- Variation in beak shape within the initial population: There must have been existing genetic variation in the population of finches regarding beak shape. Some finches would have had the beak shape that provided an advantage in obtaining food resources in the drier climate, while others would have had different beak shapes.
Without this initial variation in beak shape, there would be no opportunity for natural selection to act and favor individuals with the advantageous beak shape. Therefore, the presence of genetic variation within the population is necessary for the changes in the finch populations to occur.
Based on the theory of natural selection, the necessary condition for the changes in the finch populations to occur is limited food resources. Option B
What does natural selection say?Natural selection is the process by which populations of living organisms adapt and change over time.
Natural selection occurs when there is variation within a population of a species, and some individuals are better able to survive and reproduce than others.
These individuals are more likely to pass on their genes to the next generation, and the population will gradually change over time.
The above answer is based on the full question below;
Over time, the climate of an island became drier, which resulted in changes to the populations of various island finch species. Finch populations with a certain beak shape thrived, while those not having that beak shape decreased, Which of the following describes a necessary condition for these changes in the finch populations to occur?
A. fewer mutations B. limited food resources C. limited beak variations D. overproduction of offspring
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Which system is easiest to study without X-rays or body scans? A Skeletal B Endocrine С Integumentary D Lymphatic
Answers
Answer:
A and B
Explanation:
A scientist measured an increase in nitrous oxide in the atmosphere this increase would result in
Answers
What is the primary reason organisms
undergo cellular respiration?
to get rid of wastes
to convert food to useable energy
to supply plants with carbon dioxide
+
to create energy from the sun
Answers
The primary reason organisms undergo cellular respiration is to convert food to usable energy.
Cellular respiration is a metabolic process that occurs in the cells of living organisms and involves the breakdown of organic molecules, such as glucose, to release energy in the form of ATP. This process is essential for cells to carry out their normal functions and for organisms to maintain their life processes.
Cellular respiration involves a series of reactions that break down glucose into smaller molecules, which are then used to generate ATP. During this process, oxygen is consumed and carbon dioxide is produced as a waste product. The process of cellular respiration is an efficient way for cells to convert the energy stored in food molecules into usable energy, which is essential for cell growth, repair, and reproduction.
In contrast, photosynthesis is the process by which plants and some bacteria use energy from sunlight to convert carbon dioxide and water into glucose and oxygen. This process is essential for plants to produce their own food and to release oxygen into the atmosphere.
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Which of the following is not a career a geneticist might have?
animal breeding
biotechnician
general practice physician
crime scene work
Answers
Crime scene work of the following is not a career a geneticist might have.
Can a geneticist work in a hospital?Clinical laboratory geneticists operate in a variety of laboratory settings, including university medical institutes, reference labs, and the biotechnology sector. They are an essential component of the healthcare team. In response to your question, you may undoubtedly pursue your PG in Evolutionary Biology after finishing your MBBS program. Your previously mentioned course is also very significant in the field of medical research and development.
Who is a famous geneticist?Francis Collins, an American geneticist who served as the National Institutes of Health's director from 2009 to 2011, found the genes that cause hereditary illnesses (NIH).
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Why do you think clothes wear-out faster if washed in hard water?
Answers
Answer:
Hard water can cause your dark clothes to fade faster than they should. ... Explanation:
You get those stains for the same reason you get similar-looking stains inside porcelain sinks and toilets – iron in the water. Household water containing a lot of iron may leave those stains on your clothes.
What is an example of prokaryotes?
Answers
Answer: Examples of prokaryotes are bacteria and archaea.
Explanation:
Answer:
bacteria and archaea
Explanation:
they're single celled organisms
What was the climate like prior to the extinction ?
Answers
Answer:
The extinction you are referring to is unclear, as there have been several mass extinctions throughout Earth's history. However, it is generally accepted that climate has played a significant role in many of these events. Prior to some of the mass extinctions, such as the Permian-Triassic extinction and the Cretaceous-Paleogene extinction, the climate was warm and tropical with high levels of carbon dioxide in the atmosphere. This warm climate was likely a contributing factor to the extinction, as it may have led to changes in sea level, ocean circulation, and weather patterns that disrupted ecosystems and caused widespread extinction of species. However, it is important to note that climate is just one of many factors that can contribute to mass extinction events, and there are often multiple causes involved.
What do you think some of the negative consequences of gender socialization could be?
Answers
One negative consequence of gender socialization is the reinforcement of gender stereotypes. Stereotypes are oversimplified and often inaccurate beliefs about groups of people, and they can lead to discrimination and prejudice. Gender stereotypes can limit individual choices and opportunities, as well as contribute to gender-based violence and other forms of inequality.
Another negative consequence of gender socialization is the pressure to conform to traditional gender roles and expectations. This pressure can limit individual expression and creativity, and it can also contribute to mental health issues such as anxiety and depression.
list the four major types of organic compounds
Answers
yww lol
how dose the number of chromosomes found in the two daughter cells compare to the number of chromosomes found in the mother cell
Answers
I am generally found both inside and outside of the nucleus in a eukaryotic cell! DNA RNA BOTH?
Answers
RNA is found outside of the nucleus wile DNA is found inside the nucleus.
Eukaryotic cells have a true nucleus, which means the cell's DNA is surrounded by a membrane. Both the inner and outer membranes of the nuclear envelope are phospholipid bilayers. The nuclear envelope is punctuated with pores that control the passage of ions, molecules, and RNA between the nucleoplasm and cytoplasm.In eukaryotes, however, the DNA takes the form of compact chromosomes separated from the rest of the cell by a nuclear membrane.In eukaryotes, the cell's genetic material, or DNA, is contained within an organelle called the nucleus, where it is organized in long molecules called chromosomes.Learn more:
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in a certain species of lizard, there are two alleles for eye color, and eyes can be either black or yellow. the black allele shows simple dominance over the yellow allele. two black eyed lizards are crossed, and the result is 72 black eyed lizards and 28 yellow-eyed lizards. your hypothesis is the black-eyed parents were bb x bb. assume that eye color is an autosomal trait in this species.
Answers
Your hypothesis that the black-eyed parents were bb x bb is correct. since the phenotype is only the observable trait and it does not reflect the underlying genotype.
This is because the black allele showing simple dominance over the yellow allele means that when two dominant black alleles (bb) are present, the resulting offspring will also have black eyes. In this case, the cross would produce a genotype ratio of 100% BB (black eyes) and 0% bb (yellow eyes) among the offspring. This genotype ratio is consistent with the observed phenotype ratio of 72 black eyed lizards and 28 yellow-eyed lizards.It is important to note that the phenotype ratio (72:28) does not match the genotype ratio (100:0) since the phenotype is only the observable trait and it does not reflect the underlying genotype.
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You have the freedoms of ____ speech, press; and the right to ___ peacefully and petition the government
Answers
You have the freedoms of religion, speech, press; and the right to assemble peacefully and petition the government.
What is constitution of freedom?Constitution of freedom governs certain laws that help its citizens to have freedom to choose what they like without any condition.
Indian constitution governs its citizens the freedom to choose any religion, follow it or practice it. There is freedom of speech and expression. They can peacefully assemble at any place and can move to any part of the country.
The citizens also have the right to practice any profession and have the freedom to report the government for law and justice.
Thus, constitution of freedom protects the fundamental rights of their citizens.
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Conclusion:
Include the following as a summary paragraph in the conclusion of your lab report:
Analysis of the results of the experiment
I
Based on your data, describe the overall trend for each of the five
factors that were measured?
What information do your graphs show? Describe the correlation
between the two factors that you graphed
● Rationale for the support or rejection of the hypothesis
Questions:
Using what you have learned in the lesson and the virtual lab activity, answer the
following questions in complete sentences:
1. Identify the abiotic and biotic factors in this lab.
2. Describe the symbiotic relationship between each of the organisms.
3. Explain how the limiting factors affect carrying capacity in each population.
Answers
Answer:
Your conclusion will include a summary of the lab Describe the overall trend for each of the five factors that were measured
Explanation:
Problem: Observe the Karyotype provided and answer the following 3 questions using the chromosomal syndrome table, karyotype, your notes and readings.
What patterns do you observe in this karyotype?
What chromosomal difference is seen in this karyotype?
Use the table to identify the chromosomal syndrome and biological sex of this individual.
Answers
In addition to trisomy 21, the most common chromosomal syndromes in newborns are trisomy 18, trisomy 13, 45, X (Turner syndrome), 47, X X Y (Klinefelter syndrome), 47, X Y Y, and 47, X X X.
Tell me about a karyotype, please.?A person's karyotype is made up of all their chromosomes. The expression can also be used to describe a lab-made representation of a person's chromosomes split from one cell and arranged in numerical order.
What does a karyotype's 46 X Y mean?A 46, X Y karyotype suggests that the problem is a genetic boy who was not fully developed during fetal development. testosterone levels and D H T.
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There is iron in Hawaiian rocks. What does the presence of Iron tell scientists?
Answers
According to Humayun's hypothesis, chemical reactions between rock and liquid metal at the Earth's core-mantle border are what caused the extra iron to enter the mantle.
How iron is found in Hawaiian rocks?According to research by Professor Munir Humayun, the Earth's mantle beneath Hawaii has a higher iron content than other parts of the mantle. Hot plumes of solid rock from the core-mantle barrier or the deep mantle rise at rates of a few centimeters per year to form hotspot islands, such as Hawaii.
Seismologists have long hypothesized that the deep mantle of the Earth, which is the rocky layer 1,000 to 3,000 kilometers below the Hawaiian Islands, has a higher percentage of iron, but no one has ever exactly tested it, according to Humayun. One of the four primary elements that make up the mantle is iron.
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How does altitude (elevation) affect climate
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What are the ecological relations the takes place in terrestrial ecosystem grassland?
Answers
A terrestrial ecosystem is a population of land-based species and the relationships between biotic and abiotic elements in a specific space. The tundra, taigas, temperate deciduous woods, tropical rainforests, grasslands, and deserts are a few examples of terrestrial ecosystems. A location's temperature range, average annual precipitation, soil type, and amount of light all affect the sort of terrestrial ecosystem that can be found there.
What is an ecosystem?Plants, animals, and other species are biotic factors. Along with rocks, temperature and humidity are abiotic variables.The health of the entire Earth system is determined by ecosystems, which are the basis of the biosphere.Every component of an ecosystem is directly or indirectly dependent upon every other component. An ecosystem's temperature changes frequently have an impact on the types of plants that may flourish there, for example. Animals that rely on plants for food and shelter must evolve with the times, relocate to another ecosystem.Even the Gobi's chilly desert ecosystems are different from Antarctica's icy desert ecosystems. A continent almost entirely composed of barren, Antarctica is covered by a massive ice sheet. This arid ecology supports only a small number of birds, including skuas, and only a few mosses thrive there.To learn more about ecological, refer to:
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Horizontal gene transfer only occurs between prokaryotic organisms.
a. True
b. False
Answers
Answer:
The given statement is false.
Explanation:
The lateral gene transfer of the horizontal gene transfer refers to the movement of the genetic substance between the multicellular and unicellular organisms other than by the vertical transmission of DNA to the offspring from the parent. Horizontal gene transfer is essential for evolution in several organisms. The mechanism is common among the prokaryotes like bacteria and is accountable for bacterial drug resistance.
On the evaluation of certain sequences of DNA, it has come to know that horizontal gene transfer also takes place in eukaryotes from the mitochondrial and chloroplast genomes to the nuclear genome. One of the examples is that plants possess the tendency of getting genetic information from viruses.
The diagram shows the reproductive system of a plant.
Which of the following best describes the interaction that occurs between a plant's reproductive parts during self-fertilization?
The diagram shows the reproductive system of a plant.
Which of the following best describes the interaction that occurs between a plant's reproductive parts during self-fertilization?
Pollen is released from the stigma and is transferred to the anther. A pollen tube grows down from the anther through the filament and fuses with the ovule, where the sperm fertilizes the egg.
Pollen moves from the ovule up through the style and is released from the stigma. The pollen is transferred to the anther, where the sperm fertilizes the egg.
Pollen is released from the anther and is transferred to the stigma. A pollen tube forms and grows through the style. The pollen tube reaches an ovule within the ovary where the sperm fertilizes the egg.
Answers
The correct answer is pollen is released from the anther and is transferred to the stigma. A pollen tube forms and grows through the style. The pollen tube reaches an ovule within the ovary where the sperm fertilizes the egg.
This option correctly defines the interaction that occurs between a plant's reproductive parts during self-fertilization as it explains the pollination process and fertilization, when pollen grains are released then are transferred to the stigma the pollen tube is there that reaches ovule and the sperms fertilize an egg.
What is pollination?
Transfer of pollen from anther to the stigma of plants. Pollen is released from the anther and is transferred to the stigma. A pollen tube forms and grows through the style. The pollen tube reaches an ovule within the ovary where the sperm fertilizes the egg.
Thus it is clear that the answer explained above is correct describes the interaction that occurs between a plant's reproductive parts during self-fertilization.
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Assume you are looking for microorganisms in a tissue sample from a lung biopsy obtained from a patient sick with pneumonia. Microbes first become visible under the 40X high-dry lens, and can be seen in more detail under the 100X oil immersion lens. You determine that you are likely looking at bacterial cells.
Why is it unlikely that these are archaeal cells?
Why is not possible that these are viral particles?
Answers
Answer:
CRYSTAL SPRING COLLEGE will give you a great explanation located at Lekki - ibeju in eputu
Describe how environment and biological factors interact in development
Answers
The development of an individual is shaped by both environmental and biological factors, and the interaction between these two factors is complex and multifaceted.
Environmental factors can include things like nutrition, exposure to toxins or pollutants, stress, social experiences, and cultural practices. These factors can have a direct impact on the development of the body and brain, as well as on behavior and cognitive processes. For example, studies have shown that children who grow up in poverty or experience high levels of stress may be at greater risk for developmental delays or behavioral problems.
Biological factors, on the other hand, include things like genetics, hormones, and brain structure. These factors can also have a significant impact on development, and they can interact with environmental factors in complex ways. For example, genetic factors may influence a child's susceptibility to environmental toxins or pollutants, or they may impact how the child responds to stress.
The interaction between environmental and biological factors can occur at many different levels of development, from the prenatal period through adolescence and adulthood. For example, during the prenatal period, environmental factors such as maternal nutrition, stress, and exposure to toxins can impact fetal development and increase the risk of certain health outcomes later in life.
Similarly, during childhood and adolescence, environmental factors such as social experiences and exposure to trauma can impact brain development and lead to changes in behavior and cognitive processes. At the same time, biological factors such as genetics and hormones can interact with these environmental factors to influence how the brain responds to different experiences.
Overall, the interaction between environmental and biological factors is complex and multifaceted, and it can have a significant impact on the development of an individual. Understanding these interactions is essential for promoting healthy development and addressing the challenges that can arise when these factors interact in negative ways.
What are the forms of potential energy that can be used by a cell
Answers
Answer:
Adenosine triphosphate