Please can someone help with question 8 of my practice questions please as I’m struggling with that part

Answer:

the parts include Cell Membrane, Mitochondrion, Lysosome, Rough Endoplasmic Reticulum.    

Explanation:

the cell membrane Is made out of phospholipids and proteins

the Mitochondrion Site of cellular respiration "power house"

the Lysosome S.uicide Sacks that contain digestive enzymes

rough Endoplasmic Reticulum contains Ribosomes, transports proteins

hope this helped!

Dogs that have a desirable coat color are bred with one another to produce puppies with the same coat color

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Answer:

dizziness, weakness , shortness of breath

The variety and genetic differences found within an ecosystem represent the ecosystem's biodiversity.

Biodiversity refers to the variety of living organisms that inhabit an ecosystem, including species, genetic diversity, and ecological diversity. The biodiversity of an ecosystem is determined by the number and variety of different species present, as well as the genetic differences within each species.

It also provides numerous cultural and recreational benefits, such as the enjoyment of natural areas and the aesthetic value of diverse ecosystems.

The biodiversity is under threat due to various human activities such as habitat destruction, pollution, and climate change. Loss of biodiversity can have significant consequences for both the ecosystem and human well-being.

Therefore, conservation efforts aimed at preserving biodiversity are critical to maintaining healthy ecosystems and ensuring the long-term sustainability of the planet.

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The first branch of the evolutionary tree is believed to be the separation between prokaryotes (organisms lacking a cell nucleus) and eukaryotes (organisms with a cell nucleus).

The evolutionary tree, also known as the tree of life or phylogenetic tree, represents the evolutionary relationships between all living organisms on Earth. It illustrates the diversification of life over time, showing how different species are related to one another through common ancestors.

1. The first step in understanding the first branch of the evolutionary tree is to recognize that all life on Earth can be classified into three main domains: Bacteria, Archaea, and Eukarya.

2. Among these domains, Bacteria and Archaea are considered prokaryotes, which are single-celled organisms lacking a membrane-bound nucleus. They are believed to have diverged from a common ancestor.

3. Eukarya, on the other hand, comprises organisms with eukaryotic cells, which possess a nucleus surrounded by a membrane. This domain includes all complex organisms such as plants, animals, fungi, and protists.

4. The separation between prokaryotes and eukaryotes is considered the first major branch in the evolutionary tree. It represents a fundamental divergence in cellular structure and complexity.

5. While the exact details and timing of this divergence are still the subject of scientific investigation, it is generally believed to have occurred billions of years ago, early in the history of life on Earth.

6. This initial split paved the way for the subsequent diversification of life, leading to the vast array of species and ecosystems we observe today.

7. It is important to note that the evolutionary tree is a constantly evolving representation of our understanding of the relationships between organisms. New discoveries and advances in scientific knowledge may lead to revisions and refinements of the tree over time.

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Answer:

Explanation: got it correct on edmentum

Can you please help me with this exercise A of sentence rephrasing:

1.We were doubtful about his success. (Use: sure.....)

Ans: We were not sure about his success.

2. Sneha looked at me and smiled. (Begin: looking.....)

Ans:- Looking at me, Sneha smiled.

3. One should not always keep promises. (Begin: Promised)

Ans:- Promised should not always be kept.

4. I said,' How sad he looks! (Begin! I exclaimed)

Ans- I exclaimed, "How sad he looks!"

5. As soon as the traveler knocked, a bird. flew out of the turret. (Begin: No sooner...…)

Ans:- No sooner did the traveler knock, a bird flew out of the turret.

6. Unless you walk fast, you will miss the bus. (Use: lest)

Ans:- Walk fast lest you miss the bus.

7. The boxing was kind and just. (Begin: Not only)

Ans!- Not only was the boxing judge kind, but also just.

8. Mrinal is not as clever as Samir. (Begin: Samir.....)

Ans: Samir is cleverer than Mrinal.

Sentence transformation or sentence rephrasing exercises are used to describe these types of sentences. They require changing a sentence to include a particular word or phrase specified in parentheses. These exercises are designed to assess your knowledge of sentence form, principles of grammar, and word usage. They help develop your ability to communicate concepts in multiple ways and show versatility in sentence structure.

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Answer:

Because the life cycle resembles to that of other organisms

1-EGG

2-LARVA

3-PUPA

4-ADULTHOOD

Explanation:

Answer:

Anaerobic respiration

Answer:

Prokaryotic cells are cells without a nucleus. Eukaryotic cells are cells that contain a nucleus.

Explanation:

Eukaryotic cells are cells containing membrane-bound organelles and are the basis for both unicellular and multicellular organisms. In contrast, prokaryotic cells do not have any membrane-bound organelles and are always part of unicellular organisms.

Answer:

Explanation:

A coral reef is an environment in which various abiotic (water, sunlight, temperature, salt, waves, and so on) and biotic (aquatic plants, shrimps, fish, corals, and so on) factors combine to maintain the system's homeostasis. A simulation model is a descriptive model that makes future inferences about one system using existing data (or process). A computer-based experiment in which each part of the device contributes to the measurement of the impacts induced by the interaction of unknown inputs is also known as a simulation model. It is possible to determine how changes in water temperature influence the relationship between various types of trophic levels in the coral reef environment, which may be expressed by aquatic plants and fish species, by using a simulation model.

Corals, algae, and fish in coral reefs have a lower survival rate as the pH of the ocean water drops. In acidic ocean water, coral reefs struggle to survive. This is due to the coral's calcium carbonate shell's inability to withstand an acidic environment. Snails, clams, algae, fish, and other animals have calcium carbonate in their skeletons. The death of these animals is caused by increased acidity. As a result, the lower the pH of ocean water, the higher its acidity, and therefore the lower the chance of corals, algae, and fish surviving in the coral reef.

The amount of calcium carbonate in coral reef water is affected by a lower pH value (more acidic). Since coral skeletons are made of calcium carbonate, this has an effect on them. It may be a major issue (since coral reefs are a source of food and tourism), since it would be more difficult for them to calcify or even dissolve. As a result, if 'ocean acidification' occurs as a result of carbon dioxide absorption from the atmosphere, reduced pH may reduce coral reef biodiversity.

The simulation's pH is too low to allow coral reefs to develop. The ocean is affected, and these coral reefs are important for the diversity of marine life because they have a lot of nutrients, which is ideal for small organisms to live in. As a result, if there is a lot of acid in the water, these coral reefs will dissolve and vanish.

I'd raise the ocean's temperature and lower the pH percentage so that users can see how human activity affects the ocean. Human activity causes contamination of the air, which causes CO2, which causes more of the CO2 to be consumed by the seas, raising acidity, which contributes to an increase in temperature and the dissolution of coral reefs.

Add mutations, edit genes, pick factors such as wolves, food, climate (arctic or dessert), and monitor population or pedigree chart were some of the variables I had control over in the simulation.

The impact on the pH of Earth’s oceans can be reduced by lowering the carbon dioxide in the air, and reducing the plastics that goes into the oceans.

Government-approved projects will be needed to temporarily limit fishing in the region. There will be a dead end in seafood resources from the river as a result of the consequences.

The "exfoliation" or "shedding" of milk teeth is the name of the procedure.

The primary and permanent tooth sets make up the human dentition. Maxillary (upper) and Mandibular (lower) are the two opposing arches in which teeth are arranged. These can be split into their left and right halves along the midline (mid-sagittal plane).

Four Different Teeth Types and Their Purposes

The majority of individuals have 32 permanent adult teeth, which can be classified into four groups:

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Answer:

All the options are true except option D.

Explanation:

Archaea are a group of prokaryotic organisms i.e. they lack a membrane bound nucleus. They are one of the the three domains of life (the other two being bacteria and eukarya). Archeans possess a cell wall like bacteria but it is not composed of peptidoglycan, like bacteria cell wall.

Archeans are generally known to be found in very severe environmental conditions, hence, they are referred to as extremophiles e.g Some are thermoacidophiles i.e. thrive in very hot and acidic environment while others are extreme halophiles i.e. thrive in salty regions. Archeans known as methanogens produce methane gas as a product of metabolism from carbon dioxide and hydrogen.

However, the domain archeae was only found to be in existence recently after the domain bacteria, hence, they are not considered to evolve before the domain bacteria.

The number of protons in an element is the primary factor that determines the element's identity. It is not possible to change the total number of protons in an element without also changing its identity.

The atomic number rises by one and the identity of the element is altered when a proton is added to the nucleus. Isotopes may be produced by varying the number of neutrons in a substance.

This is further explained below.

Generally, A chemical element is a race of atoms that have a certain amount of protons in their nuclei. An element also refers to the pure material that exclusively consists of that species of atoms.

In conclusion, In contrast to chemical compounds, chemical elements are incapable of being decomposed into more fundamental substances by any chemical process.

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15. I

16. G

17. C

18. A

19. H

20. F

21. J

22. B

23. D

24. E

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Answer:

The immune response is how your body recognizes and defends itself against bacteria, viruses, and substances that appear foreign and harmful.

The specific properties of the most desired organic semiconductors for solar panel technology may evolve as advancements are made in the field.

In the context of solar panel technology, the most desired type of organic semiconductors would typically possess the following characteristics:

High Efficiency: The organic semiconductors should have a high power conversion efficiency, meaning they can efficiently convert sunlight into electricity. This is crucial for maximizing the electricity output of solar panels.

Tunable Bandgap: Organic semiconductors with a tunable bandgap would be advantageous. The bandgap determines the range of light wavelengths that can be absorbed by the material. A tunable bandgap allows for optimization to match the solar spectrum, enabling better absorption of sunlight and improved overall efficiency.

Long Operational Lifetime: The organic semiconductors should be stable and exhibit a long operational lifetime. Solar panels are expected to endure outdoor conditions for many years, so the materials used should be resistant to degradation, such as from exposure to UV radiation or moisture.

Scalability and Low Cost: Manufacturers aim to produce organic semiconductors on a large scale at a low cost. Therefore, desirable organic semiconductors should be readily synthesized using cost-effective methods and be compatible with high-volume manufacturing processes.

Environmental Friendliness: Organic semiconductors that are environmentally friendly and have low toxicity are desirable. This is aligned with the goal of sustainable and clean energy technologies.

It is important to note that the field of organic semiconductor research is still evolving, and scientists are continually working to improve the performance and characteristics of these materials.

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Answer:

Marine life, or sea cratures, or water creatures, or water type creatures.

Explanation:

Emphasis on SEA and I know starfish are also in the SEA.

The metric system is a system of measurement that is utilized throughout the world. The fundamental units of the metric system are meter, gram, and liter. In this system, prefixes are used to represent measurements that are bigger or smaller than the fundamental units.

The prefix “kilo-,” for example, indicates a measurement that is a thousand times bigger than the fundamental unit. Lab Intro - The Metric System Exercise A - Measurement or Distance The metric system is used to measure length or distance.

The standard unit of length in the metric system is the meter, which is represented by the symbol “m.” The metric system is used to measure distances or lengths that vary from millimeters (mm) to kilometers (km).In order to determine measurements in the metric system, the fundamental units are combined with prefixes.

For example, one centimeter (cm) is equal to 1/100th of a meter, while one millimeter (mm) is equal to 1/1000th of a meter. One kilometer (km), on the other hand, is equal to a thousand meters (m).

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narcotic are illegal drugs is a true statement.

Option A is correct

The term narcotic originally referred medically to any psychoactive compound with numbing or paralyzing properties

Chemicals with an intense physiological effect, such as drugs and psychoactive chemicals, modify brain function and momentarily affect perception, mood, and feelings.

Due to their detrimental effects on the body and human health, drugs are outlawed in the majority of nations around the world. Heroin and cocaine, which are deadly narcotics, cause the most severe addiction.

Drug dependence results in both physical and mental dependence.

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Complete question:

. Narcotics are illegal drugs

A. O True

B. O False

Steps of Double Fertilization.

1. Germination of pollen on stigma :

(i) By absorbing secretion of stigma pollen swells up and outer layer exine ruptures whereas inner lintine comes out in the form of pollen tube.

(ii) Branched polen tube is formed in amentiferae group.

(iii) In families malvaceae, cucurbitaceae, etc. polysiphonous condition (many pollen tubes from a single pollen) is found.

2. Path taken up by pollen tube :

(i) Pollen tube pierces through stigmatic papilla into the tissue of style.

(ii) Filiform apparatus of synergids secrete some chemotropically active substances, which promotes porogamy.

(iii) Obturator (special structure) act as a bridge for growth of pollen tube.

(iv) Cations are naturally occurring chemotropic agents in the pistil.

3. Entry of pollen tube into embryo sac :

(i) It enters into the ovule by either of the two methods; porogamy, chalazogamy or mesogamy.

(ii) Irrespective of the mode of entry of pollen tube into the ovule, the pollen tube always enters into embryo sac at micropylar end (Porogany).

(iii) If enters through chalaza (base) it is termed chalazogany.

(iv) If pierces through integuments, it is called mesogamy.

(v) Tip of pollen tube penetrates embryo sac and reaches egg apparatus.

4. Syngamy (Generative fertilization)

(i) Pollen tube burst as tube nucleus disorganises.

(ii) One of male gametes fuses with egg cell or oosphere.

(iii) Deploid oospore or zygote is formed.

5. Triple fusion (Vegetative fertilization) :

The other gamete fuses with secondary nucleus forming triploid primary endosperm (PEN) which later give rise to endosperm.

Answer:

Double fertilization is a process unique to flowering plants (angiosperms) in which two sperm cells fertilize two different structures within the female reproductive system. The steps of double fertilization are:

Double fertilization leads to the formation of both the embryo and endosperm within the ovule, which ultimately results in the development of a seed.

When teaching Processing, it is essential to design and organize learning experiences that align with local circumstances and provide practical applications.

Here is a suggested approach for teaching Processing, including traditional processing of raw materials, metal processing, and food processing, considering local circumstances:

1. Introduction and Contextualization:

Start by introducing the concept of processing and its importance in various industries. Provide examples of local raw materials, metals, and food products that undergo processing. Discuss the significance of processing in the local economy and its impact on society.

2. Field Trips and Industry Visits:

Arrange field trips to local processing facilities such as factories, mills, or food processing plants. These visits offer students firsthand exposure to different processing techniques and machinery. Encourage students to observe and interact with professionals in the field, asking questions and understanding the practical aspects of processing.

3. Hands-on Workshops:

Organize hands-on workshops where students can engage in practical activities related to processing. For example, set up a metalworking workshop where students can learn basic metal processing techniques like cutting, shaping, and welding. Provide guidance on safety measures and proper tool usage.

4. Local Case Studies:

Explore local case studies of successful processing businesses or initiatives. This could involve inviting guest speakers from local processing companies or inviting entrepreneurs who have started their own processing ventures. Students can learn about the challenges, opportunities, and sustainable practices in the local processing industry.

5. Project-Based Learning:

Assign project-based tasks that allow students to apply their knowledge of processing. For example, students could design and develop a prototype for a food processing machine or propose innovative methods to improve traditional processing techniques using local resources. Encourage creativity, critical thinking, and problem-solving skills throughout the project.

6. Community Engagement:

Encourage students to engage with the local community by organizing outreach programs related to processing. This could involve organizing workshops for local artisans or collaborating with local farmers to develop value-added food products. Such activities foster a sense of social responsibility and provide students with real-world experiences.

7. Assessment and Reflection:

Regularly assess student understanding through quizzes, assignments, and presentations. Encourage reflective practices where students can evaluate their own learning journey and identify areas for improvement. Incorporate feedback mechanisms to continuously enhance the learning experiences.

By designing learning experiences that incorporate field trips, hands-on workshops, local case studies, project-based learning, community engagement, and reflective practices, students will develop a holistic understanding of processing and its significance in their local context. This approach will equip them with practical skills, foster creativity, and promote an entrepreneurial mindset, preparing them for future opportunities in the processing industry.

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The Krebs cycle occurs in the matrix of the mitochondria and requires acetyl coenzyme-A (acetyl-CoA) that is produced from both lipids and carbs.

The Krebs cycle of cellular respiration is the second step of this metabolic pathway which occurs in the mitochondrial matrix to generate  NADH and FADH which are used during oxidative phosphorylation to produce ATP.

Therefore, with this data, we can see that the Krebs cycle of cell respiration is the second stage of this process and produces molecules required for ATP synthesis.

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The energy is related to the change of state represented by the model by: D. Atoms lose energy as a gas changes to a liquid.

A model of the transition from a gas to a liquid is shown in the accompanying image. It demonstrates how atoms or molecules change from being widely scattered as in a gas to being concentrated as in a liquid.

The atoms in this process move from a higher-energy state  to a lower-energy state releasing or losing energy in the process. The most common kind of energy loss is heat.

Therefore the correct option is d.

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Answer:

strict, fun, laid back, weird

Explanation:

Planet 1 is mercury. I would weigh less in mercury

Planet 2 is Venus, I would weigh less as well.

My current weight is 56 kg

in order to get the weight I would have in Mercury, i would multiply by

0.378

= 56 * 0.378

= 21.168 kg

hence the weight has decreased in Mercury

In Venus, my weight on earth is 56 kg, in Venus be 56 * 0.905

= 50.68

my weight is reduced here as well

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One possible explanation for the difference in height between the plants from Pack A and Pack B could be genetic variation between the two packs of seeds. It's possible that Pack A contains tomato plants with a genetic predisposition for taller growth, while Pack B contains plants with a genetic predisposition for shorter growth.

Another possible explanation could be differences in the soil quality or environmental conditions where the plants were grown, which could have affected their growth.

However, since the gardener gave the plants the same amount of water, light, and fertilizer, it seems less likely that environmental factors would be the sole cause of the difference in height.

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From the diagram above, I dont think that organisms of the same ordershare a stronger evolutionary relationship than organisms in the same phylum. This is because, after kingdoms, the subsequent categories of increasing specificity are: phylum, class, order, family, genus, and species. Levels in taxonomic classificationAt each sublevel in the taxonomic classification system, organisms become more similar.Organisms that share similar physical features and genetic sequences tend to be more closely related than those that do not. Scientists use a tool called a phylogenetic tree to show the evolutionary pathways and connections among living organisms. Phylogenetic treeA phylogenetic tree is a diagram used to reflect evolutionary relationships among organisms or groups of organismsTaxonomical classificationTaxonomy is the scientific study of naming, defining and classifying groups of living organisms based on shared characteristics. There are seven main taxonomic ranks: kingdomphylum ( in animals )or division ( in plants )classorderfamilygenusspecies.