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Multicellular plants and animals have organs to perform specific functions.


What do eukaryotic cells have to perform specific functions?



A. vacuole



B. organelles



C. cytoplasm



D. ribosomes

Paramecia are a living thing. They are also ciliates.

hope this answer correct :)

Answer:

True

Explanation:

This answer is true because i know it is true and it is common sense so the answer I present is science

Answer:

the lipid is inside the bread

the bread of the pizza is carbohydrates and protein why protein because bread of the pizza had ings. of egg

protein is the toppings

The strong white fibrous material called the periosteum covers the bones.

Layers of tissue inside and around your bones include the periosteum, endosteum, and perichondrium. Your bones' outer sheath, known as the periosteum, provides them with blood, nerves, and the cells they need to grow and mend. Your bones' endosteum, a membrane that surrounds the bone marrow in the middle of them,

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Answer:

1.  Diffusion

2. Osmosis

3. Diffusion

4. Facilitated Diffusion

5. Osmosis

6. Diffusion

Explanation:

Facilitated Diffusion- Move molecules across the cell membrane in a passive transportation with  membrane protein.

Osmosis- Move water molecules from high concentration to low concentration.

Diffusion- Evenly spread molecules from high concentration to low concentration.

1. Gases move across the room with ease without energy.

2. Water enter skin cells allowing cells to grow and wrinkle without energy.

3. Gases move with ease without energy.

4. Glucose requires energy to transfer.

5. Water leaves throat when concentration outside of throat is less that that inside the trough so water moves outwards.

6. Oxygen is uses passive diffusion does not require energy and will with ease move in and through a cell.

Several xenopus cells were subjected to various UV exposures. It was discovered that some of the resulting cells lacked nucleoli. Therefore, it stands to reason that the cell would be unable to produce ribosomal RNA.

RNA is a subclass of ribonucleic acid that helps the body make proteins. This nucleic acid is in charge of generating new cells in a human body. It is frequently produced using the DNA molecule. The main distinction between RNA and DNA is that the latter contains two strands and only one ribose sugar molecule, whereas RNA only has one.

Ribosomes, the primary component of non-coding RNA known as ribosomal ribonucleic acid, are necessary for all cells (rRNA). Ribosomal RNA is translated from ribosomal DNA to produce the big and small ribosomal subunits (rDNA).

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Option b, a large percentage of subjects being lost to follow-up, would violate an assumption necessary to directly calculate cumulative incidence in a ten-year prospective cohort study on the relationship between stress and bipolar disorder.

Cumulative incidence is a measure used in epidemiological studies to estimate the risk of developing a disease over a specified period. It is calculated by dividing the number of new cases of the disease by the total population at risk.

In a ten-year prospective cohort study, researchers follow a group of individuals without the disease of interest (in this case, bipolar disorder) over a period of time to observe the occurrence of new cases. However, there are certain assumptions that need to be met for the direct calculation of cumulative incidence. One of these assumptions is that there should be minimal loss to follow-up.

Option b states that there is a large percentage of subjects lost to follow-up. This violates the assumption necessary for directly calculating cumulative incidence because the loss to follow-up introduces the possibility of bias and incomplete data. If a significant number of subjects drop out or are lost during the study period, it becomes challenging to accurately determine the occurrence of new cases of bipolar disorder and calculate the cumulative incidence.

Other options provided:

a. An unusually large increase in bipolar disorder diagnoses occurring in study year: This occurrence does not violate the assumption necessary to directly calculate cumulative incidence. It may reflect a genuine increase in the occurrence of bipolar disorder in the study population.

c. Exclusion at baseline of all subjects currently being treated for bipolar disorder: This exclusion does not violate the assumption necessary to directly calculate cumulative incidence. By excluding individuals already being treated for bipolar disorder, the study focuses on observing new cases and estimating the risk among those initially free of the disease.

d. Bipolar disorder is relatively common in the population: The relative commonness of bipolar disorder in the population does not violate the assumption necessary to directly calculate cumulative incidence. It may affect the overall incidence rate but does not impact the calculation itself.

In a ten-year prospective cohort study on the relationship between stress and bipolar disorder, a large percentage of subjects being lost to follow-up (option b) would violate the assumption necessary to directly calculate cumulative incidence. Loss to follow-up introduces the possibility of bias and incomplete data, making it challenging to accurately determine the occurrence of new cases of bipolar disorder over time.

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True. Macula densa cells release paracrine agents, such as adenosine and nitric oxide, which cause constriction of afferent arterioles and dilation of efferent arterioles.

This helps in regulating glomerular filtration rate and maintaining proper kidney function.

When the macula densa cells detect an increase in sodium chloride concentration or a decrease in fluid flow, they respond by releasing paracrine agents, such as adenosine and nitric oxide. These paracrine agents have specific effects on the arterioles in the renal vasculature.

Adenosine is a potent vasoconstrictor. When released by the macula densa cells, it acts on the afferent arterioles, causing them to constrict. This constriction helps regulate the blood flow into the glomerulus, reducing the pressure and subsequently decreasing the GFR.

By constricting the afferent arterioles, adenosine helps prevent excessive filtration and ensures that the kidney is not overwhelmed with an excessively high GFR.

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A potential hypothesis for analyzing factors that affect carrying capacity and biodiversity in a population growth project could be: "If the carrying capacity of a particular ecosystem is exceeded due to increased population growth, then biodiversity within that ecosystem will decrease as resources become more limited and competition among species increases."

This hypothesis suggests that the ability of an ecosystem to sustain a certain number of individuals is directly related to the diversity of species present. By analyzing factors such as resource availability, habitat fragmentation, and species interactions, researchers can better understand how population growth impacts the overall health and stability of ecosystems.
A possible hypothesis for your population growth project could be: "In an ecosystem, the carrying capacity and biodiversity are significantly influenced by factors such as resource availability, competition, and predation. As these factors change, the population growth rate and overall biodiversity will either increase or decrease accordingly."

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Answer: Given this statistic, it is not surprising that the primary control point for gene expression is usually at the very beginning of the protein production process — the initiation of transcription. RNA transcription makes an efficient control point because many proteins can be made from a single mRNA molecule.

Explanation:

Answer:

D. wooly mammoth tusk

Explanation:

i took the test

Answer: wooly mammoth tusk

Explanation: took da test

The Energy-capturing backpack is a good solution for the rescue team.

The energy capturing backpack is made up of a weight attached to the top part of a pendulum, which swings back and forth as a person walks, and the weight adds momentum. And the bottom part of the pendulum connects to the energy harvesting module via the springs on either side of the device.

The entire system is housed in a frame that the user can wear like a traditional backpack. The energy harvesting backpack is approximately 5kg in weight. The main and very promising advantage of the new energy harvester is that the user does not need to do anything else to generate electricity, such as cranking a handle. Furthermore, the energy imposes no additional physical demands on the wearer beyond the weight of the device itself.

It should be noted that this is important for those who are involved in rescue activities as it gives them the needed energy and is lighter as well.

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the fruit develops from ovary

Answer:

The leaves and plant matter that fall in your potted plant creates a dark, damp environment below them that millipedes will be attracted to. They enjoy eating the decaying plant matter like leaves, stems, roots, and rotting fruit

Explanation:

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can I have brainliest

Answer:

Breathing in and eating food

Explanation:

To sum it up easily is the reactants for cellular resperation is glucose (sugar) and Oxygen. First we get oxygen from breathing (Obviously). Second we get glucose from eating foods.

The pharynx is where the air and food channels intersect. Air may enter the pharynx via breathing, which always occurs through the mouth or nose. The transition from an airway to a food channel occurs during swallowing. Thus, option D is correct.

The oxygen you breathe is used by your body cells to convert the food you consume into energy. It is known as cellular respiration.

The cell uses oxygen during cellular respiration to metabolize sugar. The energy your body need is created when sugar is broken down.

That implies that you must use more effort to breathe in enough of it when eating. Your lungs and diaphragm are crammed by the food in your stomach, which makes it tougher for them to do their jobs.

Therefore, breathing in air and eating food activities provide the reactants for cellular respiration.

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Answer: ential to decrease marine biodiversity on a very large scale.” What is ocean acidification and how is it a potential threat to marine biodiv

Explanation:

Answer:

D. Europe.

Explanation:

It didn't even grow it actually declined a little so it should be the correct one.

Answer:

Ice cores can tell scientists about temperature, precipitation, atmospheric composition, volcanic activity, and even wind patterns. The thickness of each layer allows scientists to determine how much snow fell in the area during a particular year.

Explanation:

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The CCR5 gene delta 32 mutation, according to Stephen O'Brien, may have prevented the plague from infecting its host's white blood cells.

Genetics is the study of genes and heredity, or the process through which specific characteristics or traits are passed from one generation to the next as a result of variations in DNA sequence. A gene is a section of DNA with instructions for creating one.

The primary distinction between these two concepts is that while genetic disorders can either be hereditary or not, there will always be a mutational change in the genome. Hereditary diseases, on the other hand, have the ability to be passed down from one generation to the next.

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a. Based on current observations, the objects should not be considered a life form becausethe lack some characteristics of life.

b. The characteristics of life they posses include:

c. The characteristics of life they are yet to demonstrate include:

Growth is referred to as the increase in mass and size of a body or organs which typically occurs through the multiplication of cells and an increase in intracellular substance.

From the observation made about the object we cannot consider it to be a life form because the object is yet to display growth in mass. The object must grow in order to be considered living.

In conclusion, the object was able to reproduce itself displaying a characteristic of a life form.

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The daughter cells formed at the end of meiosis II are haploid, meaning they contain half the number of chromosomes as the parent cell just before prophase I, which is diploid.

The parent cell undergoes DNA replication before meiosis I, resulting in homologous chromosome pairs. In meiosis I, the homologous chromosomes separate, resulting in two haploid cells, each with a unique combination of chromosomes. In meiosis II, the sister chromatids separate, resulting in four haploid daughter cells, each with a single copy of each chromosome.

Therefore, the daughter cells at the end of meiosis II have half the number of chromosomes as the parent cell, and a different genetic makeup due to recombination and independent assortment of chromosomes.

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The Gamma Ray wave has the most energy of all waves. The electromagnetic spectrum's smallest wavelength belongs to this type of wave, which carries the highest energy. This energy has the capacity to pass through solid materials and induce ionization, which makes it potentially harmful to living beings.

The distance in meters or nanometers between two successive peaks or troughs in a wave is referred to as its wavelength. It establishes the energy and kind of electromagnetic radiation. The wavelength, which can range in size from a few hundred nanometers to many kilometers, influences the wave's characteristics such as its speed, frequency, and amplitude.

The wavelength, which will also apply to troughs, is the separation between two wave crests. The frequency is measured in cycles per second (Hz), which is the number of vibrations that cross a specific area in a second (Hertz). The wavelength range of all visible light is 400 to 700 nanometers (nm). The wavelength of yellow light is 570 nanometers or such.

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An oxygen-storing protein found in muscle cells is called myoglobin. Muscle cells contain a protein called myoglobin, which binds to and stores oxygen.

Neither the end plate potential nor glycogen stores are broken down by myoglobin. A shift in the electrical potential of the motor end plate in response to the neurotransmitter acetylcholine is known as the end plate potential. Glycogen stores are broken down by enzymes like glycogen phosphorylase to release glucose for energy.
Myoglobin is a protein that stores oxygen in muscle cells. It plays an important role in supplying oxygen to muscles, especially during periods of high physical activity or low oxygen availability.

Additionally, myoglobin does not phosphorylate ADP directly. This process is carried out by enzymes involved in cellular respiration, such as ATP synthase, which create ATP from ADP and phosphate using the energy generated during the breakdown of glucose.

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Answer:

Feline Immunodeficiency Virus

Explanation:

Explanation: CDC recommends that people get MMR vaccine to protect against measles, mumps, and rubella. Children should get two doses of MMR vaccine, starting with the first dose at 12 to 15 months of age, and the second dose at 4 through 6 years of age. Teens and adults should also be up to date on their MMR vaccination. Children may also get MMRV vaccine, which protects against measles, mumps, rubella, and varicella (chickenpox). This vaccine is only licensed for use in children who are 12 months through 12 years of age.

Answer:

Okay, this one is pretty in-depth, but it's an example none the less.

Explanation:

Take bees, plants, deer, and wolves. All of which are technically species. One is a producer, and three of them are consumers. Bees pollinate plants. The bees now have their food, and the plants are reproducing. The plants are food for the deer. The deer are eating, surviving, and reproducing. The deer are then eaten by the wolves. There ya go. Hope this helps.