Which of the following best describes how the parent cell produces daughter cells with the same number of chromosomes during asexual reproduction?

Sister chromatids are separated into two nuclei, and after telophase they are replicated.
The chromosomes are copied during interphase, and during mitosis, they separate into two nuclei.
The chromosomes are separated during interphase and form two individual nuclei during prophase.
Sister chromatids are copied during prophase, and during anaphase they separate to form two nuclei.

underfit streams are so common in the southern United States.

What is underfit streams ?

underfit streams are the streams which have to undergone drastically reduction of discharge and  which are now too small for the valleys . which they occupy. Reduction should be understood to the  refer to channel-forming discharge, which is discharge at or near by  the bankfull stage; more the precisely, the reduction is   refers to that discharge is  frequency which is the corresponds to the  channel-forming discharge.

underfit streams are very  common in the southern by United States due to glacial melting periods. When the melting occurred water was the  fed to form these streams and but due to time passage that are  water supply has stopped  and not given enough water of  to these streams. Hence the underfit stream formations.

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Geological periods are defined using index fossils. These fossils are frequently encountered, widely scattered fossils with a small time span. Therefore, option (D) is the correct answer.

A fossil found in a relatively brief period of geological time that can be used to date the strata in which it is found is called Index fossils.

A relevant index fossil must be unique or easily recognizable, numerous, have a broad geographic distribution, and have a short temporal span. Index fossils serve as the foundation for identifying geologic time scale boundaries and strata correlation.

Therefore, index fossil describes using organisms that were only alive during a specific time period to estimate the unknown age of items.

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In seeds, sugar can be found in large amounts in the endosperm. In some species, like beans, the endosperm is absorbed when it reaches maturity, and the cotyledons will be responsible for nourishing the embryos.

The independent variables of measuring physical properties are given below -

What is physical properties?

A physical properties in any property that is measurable, whose value describe a state of physical system.

The changes in the physical properties of a system can be used to describe its changes between the  momentary that state of

physical properties are often referred to as observables.

They are not modal properties.

Any variable that can be attributed a value without attributes a value to any to any other variables is called independent variables.

It is a variable that stands alone and isn't changed by other variables you are trying to measure.

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Every biochemical reaction involves a specific enzyme to facilitate the change from reactants to products. The property of the enzyme that allows for specificity is because different enzymes have differently shaped active sites.

The shape of the active site of an enzyme is reciprocal to the shape of its specific substrate. This simply means that they are the correct shapes to fit together and function.

Enzymes are highly specific, I.e. a particular enzyme can catalyse a particular reaction only.

Enzymes show different types of specificity as follows:

1. Bond Specificity: This is also called relative specificity. The

enzymes are specific for a bond here.

2. Group Specificity: This is also called structural specificity.

The enzymes are specific to a group here.

3. Substrate Specificity: It is also called absolute specificity. In this, the enzyme acts only on a particular substrate.

4. Co-factor Specificity: This shows that enzymes are specific to their co-factors also.

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The epidermis is the most superficial layer of a plant and acts as a barrier that prevents the plant from being damaged by external forces, losing water, and being infected. Therefore, option (A) is correct.

The epidermis of a plant is a layer of protective tissue that extends throughout the entirety of the plant's surface. The epidermis shields the plant from pathogens and prevents it from drying out. It is responsible for regulating the flow of gas in and out of plant cells. The epidermis is responsible for controlling the release of metabolic byproducts.

It is the most superficial layer of cells on a plant, and it is produced from the protoderm. It covers the stem, the roots, the leaves, the flowers, the fruits, and the seeds. The epidermis and the waxy cuticle that covers it act as a barrier that prevents the body from being damaged by outside forces, losing water, and becoming infected.

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Answer:

A. 0.36 g/cm^3

Explanation:

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Among the options listed, the most recent, or last type of organism to appear in evolution of life were the eukaryotes. The have a more complex cell organization and some of the organelles they present were the result of endosymbiosis of bacteria.

Moreover, sulfir-eaters and similar bacteria were the first to appear, when atmosphere on earth lacked oxygen, which was the result of the appearance of the cyanobacteria, able to photosynthesize. The increasing oxygen on the atmosphere then allowed the appearance of aerobic baceria and later of different types of eukaryotes.

The roles of each part of the endomembrane system are:

Membrane bound organelles that modify, package and move macromolecules such as proteins and lipid molecules in eukaryotic cells are collectively known as the endomembrane system. The various functions of the endomembrane system are:

1,) Protein synthesis: This occurs in the rough endoplasmic reticulum. It contains ribosomes, which help to synthesize secondary structures in proteins.

2.) Protein modification and sorting: This is also done in the rough endoplasmic reticulum. The flattened membrane disks and cisternae perform protein modification.

3.) Lipid synthesis: The smooth endoplasmic reticulum in the liver produces steroid hormones like testosterone and oestrogen from other steroids and lipids.

4.) Macromolecule digestion: This happens in the lysosome. The lysosome is highly acidic and contains enzymes that aid in macromolecule digestion.

5.) Autophagy: This is the process in which damaged cells and protein are eaten or damaged by the lysosome. The macromolecules are broken down and reused by the cell.

6.) Cisternal maturation: It takes place in the Golgi apparatus.

7.) Calcium ion storage: Calcium ion is stored in the smooth endoplasmic and is secreted into the cytosol when it's needed.

8.) Poison detoxification: The smooth ER in the liver detoxifies substances from digestion. It does this by removing the lipid part and making the substance hydrophilic in order to be excreted by the body.

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• Where it comes from: ,Comes from Japan. Lives in places with lots of sunlight. Your flowers are small. It originates from Asia but is present in North America (The United States and Canada). It has become a problem for killing native species.

• What it eats: ,Plants are autotrophs (they make their own food). Kudzu is a plant, so it makes its food. The fact that it grows on other plants helps it to obtain solar energy and carry out even more photosynthesis,.

• Disgusting Characteristics: ,Kudzu grows on other plants and trees quickly and thus suffocates and kills other plants by heavily blocking sunlight.

Kudzu is non-toxic, and in some regions, it is used with food and medicine.

The plant's only problem is killing plants by blocking sunlight.

According to the idea of evolution in biology, the many species of plants, animals, and other living things on Earth descended from earlier species, and their recognisable differences are the result of changes made by subsequent generations.

Scientists would have to work hard to come up with a natural alternative explanation that could explain everything that evolution now explains as well as the new facts that questioned it, even if evolution were hypothetically rejected or contested by new data. It is true that evolution is a widely accepted scientific theory.

A sound justification for such data is a scientific hypothesis. The evidence for evolution comes from transitions in the fossil record, defects in animals that represent previous shared ancestry, and observable evidence of contemporary processes.

A well considered explanation for observations of the natural world that has been developed through the scientific process and that combines several facts and hypotheses is known as a theory.

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In Biology, group behavior refers to actions made by one organism that help to the survival of another organism in the group.

Some examples are:

• Meerkats have lookouts for predators

• Bees have designated individuals for different tasks, such as foraging for food or defending the nest.

• Sharing food resources.

• Migrating birds fly in formation to conserve energy.

• Fish swim in schools to avoid predators

One consequence of the organisms living in groups and doing group behaviors is that is easier to find a mate, given that they don't have to travel to find another individual of the same species.

This means that B) having an easier time finding mates, would be the right answer.

Answer:

leukocyte

Explanation:

The average temperature in San Diego, California is lower as compared to Savannah, Georgia because of the warm ocean currents from the South. Thus, the correct option is C.

Through the moving of heat from the equator toward the poles, ocean currents play an important role in controlling the climate of the globe. Ocean currents are also critically important to the sea life. They carry nutrients and food to the aquatic organisms that live permanently attached in one place, and carry reproductive cells and ocean life to new places.

The mixing of warm and cold ocean currents help in replenishing the oxygen gas and favor growth of planktons in the waterbody, the primary food for the fish population. The best fishing grounds of the world exist mainly in these mixing zones of the waterbodies.

Therefore, the correct option is C.

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Membrane proteins mediate processes that are fundamental for the flourishing of biological cells. Membrane-embedded transporters move ions and larger solutes across membranes, receptors mediate communication between the cell and its environment and membrane-embedded enzymes catalyze chemical reactions.

Hemoglobin functions in red blood cells and carries oxygen to all cells of the body.

Answer:

Complete the following sentence:

It functions in red blood cells, and transfers oxygen.

so:

Hemoglobin functions in red blood cells and carries oxygen to all cells of the body.

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Answer:

the concentration of toxins in an organism as a result of its ingesting other plants or animals in which the toxins are more widely disbursed.

Explanation:

According to the research, the correct answer is B. The statement "Matter is fixed in single states based on the composition of its atoms" is false.

It is everything that occupies a space and is subject to interactions and changes over time in nature, constituting the substances around us and that can be transformed.

In this sense, since it is susceptible to all kinds of forms and to undergo changes, it is found everywhere and in any physical state:

Therefore, we can conclude that matter is made up of atoms and is subject to transformations and interactions that it occupies space and has mass, thus the correct answer is B.

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The energy stored in the nut originally came from photosynthesis which involves use of sunlight energy, water and CO2 to form simple sugars

Plants use sunlight, water, and carbon dioxide to produce oxygen and sugar-based energy through a process known as photosynthesis.

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When a green salamander of unknown genotype ( let it be Gg) pairs with a white homozygous recessive salamander (gg) then the two possible genotypes of the green salamander will be Gg and gg

A chart that shows all the possible combinations of alleles that can result from a genetic cross between two parents is a Punnett Square. It is named after Reginald C. Punnett, who developed the idea in 1905. The diagram is used to determine the probability of an offspring having a particular genotype.

Homozygous recessive, homozygous dominant and heterozygous are three types of genotypes.

If a trait tends to be directly passed from parent to child, then the odds are that the trait is a dominant one. If a trait skips generations  then the odds are that it is recessive.

Recessive gene is the gene which can decide the appearance of an organism only in the presence of another identical gene.

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Chloroplasts are found in plant cells.

They can also be found in some algae.

The pigments that give fruits, vegetables, and petals their colors, such as chlorophyll, carotenoids, and anthocyanins, are heavily influenced by pH.

What is a good pH level for soil?

Vegetables, grasses, and most ornamentals thrive in slightly acidic soils (pH 5.8 to 6.5). Soil pH values outside of these ranges may result in less vigorous growth and nutrient deficiencies. Primary, secondary, and micronutrients are the three types of nutrients needed for healthy plant growth.

The color of flower petals is influenced by the pH of the soil.

A portion of the control group will be planted in soil that is mildly basic.

The experimental groups will be planted in pH-neutral soil.

The acidic soil will be used to raise the experimental group.

The non-acidic soil will be used to raise the control group.

Plants that grow in slightly acidic soil produce red blooms, while plants that grow in slightly basic soil produce crimson blooms.

Therefore, pH has a significant impact on nutritional qualities such as water-holding capacity and the color of petals, which are enhanced in acidic environments.

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Since we now that the change in the first positicion C for a Timine allowed the emergence of lineages A and D, we could say its inverse for the emergence of C and E, that is 1 - T -> C. I attempt that since A and D, are a sister clade with C and E, so we the only change there would be the first base. In the branching point behind A - D; C - E, we could propose a change that precede both clades, of course this is a guess and also it is arbitrary. We could say, 2 - T -> C, that is, in the second position, both couples A - D; C - E have a Citosyne.Therefore we would propose that the branch behind the bifurcation (BBB) following A-D; C-E has in its first two bases -CT-. From this point, we move to the branching point that precedes the clades E-H, and B-G. Let's propose that a change in the third base occurs, that goes from A to G. So we would have in BBB this sequence: -CTA- and in the point we are actually inferring CTG. Then, behind the clade F-H, let's propose a change in the fourth position, that goes from G - A. Following the above procedure, the change behind the B - G clade will be 4 - A to G. So for example in the clade A-D we will have this DNA sequence -TCA. In the clade C-E the DNA sequence will be -CCA-. In the clade F-H -CTGA- while in the clade B-H -CTGG-

The two cell surface modifications we can expect to see on the outside of the plasma membrane is a signaling molecule, or ligand.

Receptors and ligands come in many forms, but they all have one thing in common: they exist in closely aligned pairs, with a receptor recognizing only one (or a few) specific ligands, and a ligand binding to only one (or a few) target receptors. Binding of a ligand to a receptor changes its shape or activity, allowing it to transmit a signal or directly produce a change within the cell.

Plasma membrane receptors are membrane-anchored proteins that bind ligands on the outer surface of the cell. In this type of signaling, the ligand does not need to cross the plasma membrane. Therefore, many different types of molecules (including large, hydrophilic or "water-attracted" ones) can act as ligands.

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The human brain is primarily composed of neurons, glial cells, neural stem cells, and blood vessels. Types of neuron include interneurons, pyramidal cells including Betz cells, motor neurons (upper and lower motor neurons), and cerebellar Purkinje cells.

Answer: D

If Bb is crossed with bb, the resulting offspring will be 50% Bb and 50% bb. It will have a 1:1 black to white phenotypic ratio.

Answer - B. 1:1 black to white

Meiosis creates cells with half the number of chromosomes of the original cell. It produces four gamete cells. Mitosis creates 2 identical daughter cells with the same number of chromosomes as of the parent cell.

Meiosis is the process that form sex cells. Telophase is one of the stage of mitosis. Spermatogenesis and oogenesis occurs via meiosis.

Answer - B. Meiosis creates cells with half the number of chromosomes of the original cell.

We have to consider that kinetic energy is the one which in-movement bodies have, like atoms, or molecules. So the stored energy could be known as potential energy since it's a reserve the cells or other bodies, materials, atoms, or molecules can use to develop a determined process.