I need help please kdjndnd

Food storage and digestion take place in an amoeba occur through food vacuoles.

Amoeba is a monocellular organism that shows holozoic nutrition. It absorbs nutrients and food from the surroundings by contracting the vacuole. It has pseudopodia a drizzle-like structure that moves food into the vacuole. Inside this vacuole, there are lysosomes that contain the hydrolytic enzymes. These enzymes perform the breakdown of food particles. The digested food is then directly absorbed through the cytoplasm. This is circulated to organelles and stored for energy. After assimilation, the undigested food and waste are excreted out by fusing of food vacuole with the cell membrane.

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Explanation:Amoebas are single-celled organisms that belong to group protozoa.Food storage and digestion occur through process called phagocytosis. Due the presence of flexible membrane,they can change their shape,viz essential for their feeding mechanism.

Psuedopods are temporary projections of its cell membrane which is extended when it encounters a food particle. These pseudopods surround the food particle forming a small cavity called food vacoule.

Once the food particle is enclosed within the food vacuole, the membrane of the vacuole fuses and forms a (digestive vacuole)phagosome which contains the food particle and digestive enzymes. The digestive enzymes in phagosome breakdown the food particle into smaller molecules. The enzymes include proteases for protein digestion, carbohydrases for carbohydrate digestion, and lipases for lipid digestion.

Smaller molecules are gradually absorbed into the cytoplasm of the amoeba, where they can be utilized for various metabolic processes. The digestion products are transported across the membrane of the digestive vacuole into the cytoplasm through diffusion.

Any undigested or indigestible material is eventually expelled from the amoeba's body by process of exocytosis. During exocytosis, the residual waste material is packaged into a vesicle and then released outside the cell.

Food storage and digestion in amoebas involve

1: the engulfment of food particles through phagocytosis,

2: the formation of digestive vacuoles,

3: enzymatic breakdown of the food,

4:absorption of nutrients into the cytoplasm,

5: and elimination of waste materials through exocytosis.

Answer:

A compound partitions into its components,

Explanation:

Decomposition reaction is a type of chemical reaction occur when compounds partition of breakdown into new components or elements.

An example is the decomposition of hydrogen peroxide. Hydrogen peroxide decomposed to water and oxygen. Another example is the decomposition or breakdown of water into hydrogen and oxygen.

Answer:

A compound partitions into its components

Explanation:

Answer:

Saliva

Lipase

Amylase

Trysin

Pepsin

Erepsin

Explanation:

Substances? Just any substances?

To determine the dilution and final density of cells, we need to calculate the total volume of the diluted solution and the resulting concentration. The dilution factor is 1/100, and the final density of cells is 3.6 × 10^8 cfu/ml.

Given:

Volume of undiluted culture (V1) = 0.05 ml

Density of undiluted culture (D1) = 3.6 × 10^6 cfu/ml

Volume of sterile diluent (V2) = 4.95 ml

To find the dilution, we can use the formula:

Dilution factor = V1 / (V1 + V2)

Dilution factor = 0.05 ml / (0.05 ml + 4.95 ml) = 0.05 ml / 5 ml = 0.01

The dilution factor is 0.01, which means the solution is diluted by a factor of 1/100.

To calculate the final density of cells, we can use the formula:

Final density (D2) = D1 / Dilution factor

D2 = (3.6 × 10^6 cfu/ml) / 0.01 = 3.6 × 10^8 cfu/ml

Therefore, the dilution is 1/100, and the final density of cells in the diluted solution is 3.6 × 10^8 cfu/ml.

To calculate the dilution factor, we divide the volume of the undiluted culture (0.05 ml) by the total volume of the diluted solution (0.05 ml + 4.95 ml). This gives us a dilution factor of 0.01, indicating a 1/100 dilution.

To find the final density of cells, we divide the initial density of the undiluted culture (3.6 × 10^6 cfu/ml) by the dilution factor (0.01). This yields a final density of 3.6 × 10^8 cfu/ml.

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Answer:

Disorders involving sex chromosomes.

we can take Turner's syndrome n klinefelter's syndrome as examples.

When we cross two heterozygous (bb) dogs that both have black fur, The genotype of puppies with brown fur would be bb.

When chromosomes of the same type align during meiosis, a process known as crossing over occurs in cells. Parts of a chromosome can be switched when two chromosomes, one from the mother and one from the father, align. The genes on the two chromosomes are the same, but they may be in different forms.

Heterozygous condition: Having two distinct alleles at a specific gene locus.

if we cross two heterozygous Bb dogs,

                      Bb(black) × Bb(black)

F1 generation: BB, Bb, Bb, bb

we get the genotypic ratio: 1BB: 2Bb: 1bb

and phenotypic ratio: 3 black: 1 brown

thus, 25% of puppies have brown fur.

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Because of the interaction between genes and environment, two people with the identical genotype may not exhibit the same phenotype.

The term "genotype" broadly refers to an organism's genetic make-up, or, to put it another way, the entire set of its genes. The phrase can also be used more specifically to describe to a gene's alleles, or variant versions, that an organism carries.

A genotyping is a rating of the kind of variant that is present at a specific locus (i.e., place) in the genome. Symbols are a form of representation. For illustration, BB, Bb, and bb may be used to denote a certain gene variant.

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The estimated time it will take for the population to reach 5000 bacteria is approximately 13.4 hours.

To estimate when the population will reach 5000 bacteria, we can set up the equation P(t) = 5000 and solve for t.

The given equation for population growth is P(t) = 1000e^(0.12t). To solve for t, we can substitute 5000 for P(t):

5000 = 1000e^(0.12t)

To isolate the exponential term, we can divide both sides of the equation by 1000:

5 = e^(0.12t)

Next, we can take the natural logarithm (ln) of both sides to remove the exponential:

ln(5) = ln(e^(0.12t))

Using the property of logarithms, ln(e^(0.12t)) simplifies to 0.12t:

ln(5) = 0.12t

Now, we can solve for t by dividing both sides by 0.12:

t = ln(5) / 0.12

Using a calculator, we find that ln(5) is approximately 1.6094. Dividing this by 0.12 gives us an approximate value for t:

t ≈ 1.6094 / 0.12 ≈ 13.4117

Rounding to the tenths place, the estimated time it will take for the population to reach 5000 bacteria is approximately 13.4 hours.

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OXYGRN water is spilit in the process releasing oxygen as a by product of the reaction

Answer:

i think its b ..........

Answer:

1 is the correct answer :)

Answer:

A) the finch with the longer beak

B) the allele will continue to become more prominent as the smaller beak birds die off

C) Yes, the birds with the longer beaks will continue to live on because the birds with the smaller beaks can’t find the seeds as easily.

Explanation:

Seeds are harder to find, so finches with larger beaks get selected in a polluted environment. This is a natural selection. If this continues, then the alleles for short beak will vanish.

Natural selection is a process in which nature selects an organism that can fit well. If an allele is selected in a population and present for a longer time, then it replaces other alleles in that population. Example: In a population, both short-beaked and long-beaked finches are present.

Due to pollution, long-beaked finches are able to find more seeds than short-beaked finches. Here, nature favors long-beaked finches over short-beaked finches. If this continues for a longer generation, then alleles for the short beak will vanish. Only alleles for long beaks will be in the population.

Hence, long-beaked finches are selected. It is an example of natural selection. The allele frequency of the long beak will increase while decreasing for the short beak.

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The system that modulates excitation and inhibition of the smooth and cardiac muscles of the digestive, cardiovascular, and excretory systems is the autonomic nervous system.

The system that modulates excitation and inhibition of the smooth and cardiac muscles of the digestive, cardiovascular, and excretory systems is the autonomic nervous system. The autonomic nervous system is responsible for regulating involuntary processes such as digestion, heart rate, and urinary function, and it has two main divisions: the sympathetic nervous system, which is responsible for the "fight or flight" response, and the parasympathetic nervous system, which is responsible for the "rest and digest" response. The balance between these two divisions is essential for proper functioning of the organs and systems in the body. In summary, the autonomic nervous system plays a critical role in regulating the smooth and cardiac muscles of the digestive, cardiovascular, and excretory systems through its two main divisions, the sympathetic and parasympathetic nervous systems.

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The more isolated an island is, the lower its species richness will be. An island's size also affects its biodiversity, since larger islands will have a wider variety of habitats, so species that arrive on the island will diversify to fill up the available niches.

Island biogeography is an ecological relationship, that refers to the distribution of organisms on islands. When the island is isolated it will have more species richness and decrease ecological tolerance.

In evolution, ecology tolerance is defined as a defense trait that results in the retention of fitness that follows damage.

Whether this damage is incurred by biotic sources such as herbivores or parasites, or abiotic sources such as herbicide or drought.

The range of ecological tolerance can be understood by example of the hottest and the coldest temperature in which an individual can survive.

Thus, in this way, island biogeography decreases ecological tolerance.

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As the birds developed different tastes for fruits, seeds, or insects picked from the ground or cacti, their beaks evolved. Some of them were better suited to picking seeds from cactus fruits because of their long, pointed beaks. Shorter, stouter beaks were best for eating ground seeds.

In order to adapt and change populations of living things, natural selection is a technique. Every individual in a population is unique in some ways because of the natural diversity among its members. Because of this diversity, some individuals have characteristics that fit their surroundings more naturally than others.

For instance, giraffes have an advantage over other animals due to their long necks, which have evolved to allow them to eat leaves that other animals cannot. People with longer necks could access better food sources, which allowed them to reproduce and pass the trait down to the following generation.

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Answer:

Malaria, Leishmaniasis, and Toxoplasmosis.

Malaria is caused by Plasmodium parasites.

Leishmaniasis is caused by infection with Leishmania parasites.

Toxoplasmosis is an infection caused by a parasite that is called Toxoplasma gondii.

To calculate the energy expenditure for each food, we can multiply the mass of each component (lipids, proteins, carbohydrates) by their respective energy values.

a) Energy expenditure for 100 g of each food:

Meat: Lipids: 38 Kj, Proteins: 17 Kj, Carbohydrates: 17 Kj

Egg: Lipids: 18 Kj, Proteins: 13 Kj, Carbohydrates: 0.6 Kj

Bread: Lipids: 0 Kj, Proteins: 12 Kj, Carbohydrates: 55 Kj

Potato: Lipids: 0.8 Kj, Proteins: 0.1 Kj, Carbohydrates: 20 Kj

Lettuce: Lipids: 2 Kj, Proteins: 0.3 Kj, Carbohydrates: 5 Kj

Banana: Lipids: 1.5 Kj, Proteins: 0.2 Kj, Carbohydrates: 23 Kj

Orange: Lipids: 1.2 Kj, Proteins: 0.3 Kj, Carbohydrates: 10.6 Kj

b) Energy supply of the food ration:

Meat: (130 g) x (Lipids: 38 Kj + Proteins: 17 Kj + Carbohydrates: 17 Kj)

Egg: (65 g) x (Lipids: 18 Kj + Proteins: 13 Kj + Carbohydrates: 0.6 Kj)

Bread: (200 g) x (Lipids: 0 Kj + Proteins: 12 Kj + Carbohydrates: 55 Kj)

Lettuce: (120 g) x (Lipids: 2 Kj + Proteins: 0.3 Kj + Carbohydrates: 5 Kj)

Potato: (150 g) x (Lipids: 0.8 Kj + Proteins: 0.1 Kj + Carbohydrates: 20 Kj)

Orange: (50 g) x (Lipids: 1.2 Kj + Proteins: 0.3 Kj + Carbohydrates: 10.6 Kj)

Banana: (100 g) x (Lipids: 1.5 Kj + Proteins: 0.2 Kj + Carbohydrates: 23 Kj)

c) To determine if the energy supply of the ration balances the expenditure, we need to sum up the energy values for the ration and compare it to the daily energy requirement of 11,700 Kj. If the total energy supply exceeds or equals 11,700 Kj, it would balance the expenditure. Justification can be made based on the comparison of the total energy supply and the daily energy requirement.

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False: Not all microbes require oxygen.

True: Microbes can be found in alkaline pools

True: Microbes can be found in glaciers

False: Salt water is not toxic to all microbes.

Some microbes, known as anaerobes, can survive and thrive in the absence of oxygen. Microbes can be found in alkaline pools, as they are able to adapt to a wide range of environmental conditions.

Some microbes have adapted to survive in extreme cold environments, including glaciers. Certain types of microbes, such as halophiles, are adapted to survive and thrive in high-salt environments, including saltwater.

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Answer:

i not understand that sorry pls rebond

Answer:

what is this I cannot understand

The area of the lumen that will be available for the flow of blood would be 6.908  \(mm^2\).

The area of the lumen is given by:

π\(r^2\)

The diameter of a surface is usually the radius multiplied by 2. Thus with 4.0 mm diameter, the radius can be calculated as:

4.0/2 = 2 mm

Using this to calculated the area of the lumen:

Area of lumen = 3.14 x 2 x 2

                        = 12.56 \(mm^2\)

In other words, the area of the lumen when it is completely free is 12.56 \(mm^2\). However, 45% of this area has been blocked by the deposition of cholesterol.

45/100 x 12.56 = 5.652  \(mm^2\)

The area of the lumen that is available for blood flow would then be:

12.56 - 5.652 = 6.908  \(mm^2\)

In other words, the area of the lumen that would be available for blood flow is  6.908  \(mm^2\).

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Yes, a fluid exerts an upward buoyant force on the object immersed.What is buoyant force?Buoyancy is the upward force exerted by a fluid (such as water) on a body immersed in it.

The force exerted by a fluid on an immersed object is called buoyant force, which is the result of the fluid's pressure on the object's surface. Buoyancy results from the fact that the pressure of a fluid rises with depth. As a result, the fluid exerts more pressure on the bottom of the object than on the top.

This difference in pressure creates an upward force on the object, which is referred to as buoyancy.The magnitude of the buoyant force exerted on an object by a fluid is proportional to the volume of the fluid displaced by the object. Archimedes' principle.

which states that the buoyant force on an object is equal to the weight of the fluid displaced by the object, explains this.

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Neem oil is a natural pesticide that's sometimes applied to organic crops because of its repellent composition.

Natural pesticides are those pesticides that are made for their own defense by organisms such as plant, animal, bacteria. Neem has long been used for its medicinal and culinary properties.

So we can conclude that Neem oil is a natural pesticide that's sometimes applied to organic crops because of its repellent composition.

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Neem oil is a natural pesticide that is sometimes applied to organic crops

C. Neem oil

It is a product to control the populations of undesirable insects in agriculture, being harmless to humans and warm-blooded animals. It is fully biodegradable and does not bioaccumulate.

With this information, we can conclude that Neem oil is a natural pesticide that is sometimes applied to organic crops

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The phylum Cnidaria does not include the Octopus groups.

They are unable to move because they lack truthful muscle tissue. The class Cnidaria includes stinging animals with soft bodies, such as corals, sea urchins, and sea anemones .  Cnidarians can be found in a variety of aquatic environments. Sea anemones are found all over the world, from the cold cold waters to the equator, from simplistic tide pools to the deep ocean floor. Jellyfish float near the ocean's surface and in some tropical freshwater lakes. Corals are mostly discovered in shallow tropical waters, but a few grow in deep cold seawater as well.

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If a homozygous tall pea plant (TT) and a homozygous short pea plant (tt) are crossed, the resulting offspring will be all heterozygous (Tt) for the trait of plant height.

Each parent will contribute one allele for the trait of plant height to each offspring, and the alleles that code for tall and short plant height are dominant and recessive, respectively.

The cross can be represented using a Punnett square, which is a tool that shows the possible combinations of alleles that can result from a genetic cross. The Punnett square for the cross between a homozygous tall pea plant and a homozygous short pea plant would look like the attached picture.

Hence, all the offspring will be Tt and will exhibit the dominant trait (tall plant height) but carry the recessive allele (short plant height) and will be known as heterozygous dominant.

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Answer:

B. Hermaphrodites.

I don't have enough text to submit this

Natural selection also referred to as "survival of the fittest," is the more widespread reproduction of individuals with advantageous traits who survive environmental change because of those traits.

In the course of time, this process leads to species changing and diverging. When organisms inherit traits from their parents, the process is known as heredity. Traits refer to these characteristics. Each person has a distinctive set of characteristics, which makes them all unique. Inherited traits are those that are passed from one generation to the next during fertilization.

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The correct statements are:  A. Simple squamous epithelium allows for rapid diffusion.

C. The microvilli on simple columnar epithelium help to maximize absorption.

E. Urothelium of the urinary bladder can change shape to accommodate bladder wall stretching.

The simple squamous epithelium consists of a single layer of flat cells that allow for rapid diffusion of gases and other small molecules. Simple cuboidal epithelium is involved in secretion and absorption and does not typically have keratin present. The simple columnar epithelium is involved in secretion and absorption and often has microvilli on its surface to increase its surface area for absorption.

The esophageal stratified squamous epithelium does not typically have keratin present and is not involved in moistening the lumenal surface for swallowing. The urothelium of the urinary bladder can change shape to accommodate bladder wall stretching, which is important for the storage of urine.

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Full Question: which of the following statements regarding epithelial structure and function is/are true?

A. Simple squamous epithelium allows for rapid diffusion.

B. The keratin present on simple cuboidal epithelium protects from water loss.

C. The microvilli on simple columnar epithelium helps to maximize absorption.

D. The keratin on the esophageal stratified squamous epithelium helps to moisten the lumenal surface for swallowing.

E. Urothelium of the urinary bladder can change shape to accommodate bladder wall stretching.