blue poppies native to china are grown at a plant-breeding center in california. those with the thickest leaves survive and reproduce best in california's drier climate. this evolutionary adaptation of the poppies to their new environment is due to

Chargaff's rule, also known as the complementary base pairing rule, states that DNA base pairs are always adenine with thymine (A-T) and cytosine with guanine (C-G). A purine always pairs with a pyrimidine and vice versa. However, A doesn't pair with C, despite that being a purine and a pyrimidine.

Complementary base pairs refer to the nitrogenous bases adenine, thymine, cytosine, and guanine. in a double strand of DNA, adenine will always pair with its complement thymine and cytosine will always pair with its complement guanine. This means that the two strands are complementary to each other. For example, a strand of DNA with a nucleotide sequence of AGTCATGA will have a complementary strand with the sequence TCAGTACT.

In eukaryotes, the oxygen-requiring reactions of aerobic cellular respiration occur in cellular organelles called mitochondria.

The process through which food, in the form of sugar (glucose), is converted into energy within cells is known as cellular respiration. The oxygen-dependent phases of aerobic cellular respiration occur in mitochondria in eukaryotes. Mitochondria can be found in almost all plant and animal cells. Due to this function of mitochondria, they are also called the power houses of the cell.

While the majority of anaerobic, specifically without oxygen, and aerobic, that occurs in the presence of oxygen, respiration respectively occurs in the cytoplasm and mitochondria of the cell, respectively.

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Animal was buried 4821 years ago.

The properties of radiocarbon, a radioactive isotope of carbon, can be used to determine an object's age using radiocarbon dating, which is also known as carbon dating or carbon-14 dating.

55% Carbon-14 is left in the skull.

If A₀ was the original amount of Carbon, the amount of Carbon that is remaining will be 55% of A₀  which equals 0.55A₀

Using the given equation:

[tex]A = A_{O} e^{-0.000124t} \\\\0.55A_{O} = A_{O}e^{-0.000124t} \\\\0.55 = e^{-0.000124t} \\\\ln(0.55) = ln( e^{-0.000124t} )\\\\ln(0.55) = -0.000124t * ln(e) \\\\ln(0.55) = -0.000124t\\\\t = \frac{ln(0.55)}{-0.000124t} \\\\t = 4821[/tex]

hence, option D is correct, the animal was buried 4821 years ago.

Scientists found an animal skull during an excavation and tested the amount of carbon-14 left in it. They found that 55 percent of the carbon-14 in the skull remained. How many years ago was the animal buried? Round your answer to nearest whole number. (Hint: A = A0e-0.000124t.)

A) 443,548 years

B) 362,903 years

C) 6,439 years

D) 4,821 years

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At 20°c, a cell with ψp of 3 bars is in equilibrium with the surrounding 0. 4m solution of sucrose in an open beaker. The molar concentration of sucrose of the cell is 0.52 M.

Ψ S = -iCRT

R = 0.0831 liter bars/mole K.

 i = 1 (for sucrose)

 Psi S(surround.)= -(1) x (0.4)x (0.0831) x (273+20)

Ψ S(surround) =−9.74  PsiS(surround) = Psi P + Psi S​    -9.74 = 3 + Psi S

Ψ S =12.74

Ψ S =iCRT  −12.74=−(1)×C×(0.0831)×(273+20)  −12.74=−24.34C  C = 0.52  

The best approach to describe a solution's solute concentration is in terms of molar concentration. The definition of molarity, or M = mol/L, is the total number of moles of solute dissolved in one litre of solution. The mass or moles of solute and the volume of the solution can be converted using molar concentration. The ratio of the amount of solute to the amount of solution is known as concentration.

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Answer:

Explanation:

Gregor Mendel

Answer: Chloroplasts

The lipids that form the membranes have the structure, polar heads and nonpolar tails; polar heads interact with water.

The  insolubility in water is the main characteristic of lipids. As they are non-polar compounds, water, being polar, has no influence on their structure. On the other hand, they are soluble in organic solvents such as alcohols, ethers and ketones.

Some types of lipids are built from fatty acids. Saturated and unsaturated fatty acid. The simplest are triglycerides, or triacylglycerols, which are composed of three fatty acids, joined with ester bonds to glycerol.

Despide these, all lipids have these common characterstics:

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Proteins and phospholipids make up the majority of the cell membrane's structural elements.

What is plasma membrane?

The majority of the plasma membrane is composed of proteins, carbs, and lipids (including phosphatidylcholine). The plasma membrane protects intracellular components from the extracellular environment. The plasma membrane, that also mediates cellular functions, regulates the substances that enter and leave the cell. The majority of the plasma membrane is composed of lipids (phospholipids as well as cholesterol), proteins, as well as carbohydrate groups linked to some of the lipids and proteins. Phospholipids are lipids made up of glycerol, two fatty acid tails, as well as a phosphate-linked head group.

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There are two gamete genotypes that are possible in an individual of this species.

One copy of each pair of chromosomes comes from the individual's mother and the other copy from the individual's father. Since we have two copies of each chromosome, he has two copies of each gene. According to Mendel's law of segregation, a diploid organism passes randomly selected alleles for a trait to offspring, so the offspring receives one allele of her from each parent.

Individuals and all diploid organisms can only have two alleles for a given gene, but multiple alleles can exist at the population level, and within populations, Different individuals can have different pairs of these alleles. If two alleles are the same, the individual is homozygous for that allele. If the alleles are different, the individual is heterozygous.

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Cilia and flagella move when the bending of microtubules is powered by ATP. Option B.

Cilia and Flagella are mobile organs. They might vary in shape, length, and number, but their main function is the same. Cells use them to move in a liquid environment.

Notice that they can also have other functions, like being sensory structures and catching food.

Motion in Cilia and flagella produced by the sliding of some pairs of microtubules over others. The slides occur because of the provision of ATP from mitochondria.  

Cilia and flagella move when the bending of microtubules is powered by ATP. Option B.

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The statement the hypothalamus sends messages through both the nervous system and the endocrine system is true.

The hypothalamus can be described as the part of the brain that is actively involved in the maintenance of homeostasis i.e internal conditions of the body.

The hypothalamus is responsible for communicating with the endocrine and nervous systems through the pituitary gland.

The hypothalamus sends messages through the endocrine system releasing hormones. These hormones are sent to the anterior and posterior pituitary.

The hypothalamus sends messages through the nervous system through nerve impulses for the regulation of internal body conditions.

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Answer:

Explanation:
Convection: The process by which heat is transferred through movement of particles.
Steam from teapot
Magma towards earth's surface

Conduction: Process by which heat is transferred because objects are in contact. There is no movement of particles.
A person's skin after shower

Radiation: Heat transfer through waves or rays
Microwave oven boiling water

The posttranslational alterations of proteins may include the addition of polysaccharides to proteins (Option 4).

The posttranslational alterations of proteins are different modifications in the protein sequences in order to activate their functions and or suppress them.

One of the most common posttranslational alterations of proteins is phosphorylation, which occurs at specific amino acid residues and it is able to activate or deactivate proteins in order to change the signaling pathway associated with their functions. Polysaccharides can also be added to proteins in order to change their functional states.

Therefore, with this data, we can see that the posttranslational alterations of proteins are able to modify the functional properties of a protein and polysaccharide addition in one of these types of modifications that both structural proteins and enzymes suffer to activate an or deactivate them.

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Type of inheritance pattern that is best described below is Multiple Alleles.

Multiple alleles are the alternative forms of the same gene so they influence the same trait. The wild-type allele is mostly dominant over the mutant alleles.

Multiple alleles exist in a population when there are many variations of a gene present. In organisms with two copies of every gene, also known as diploid organisms, each organism has the ability to express two alleles at the same time. They can be the same allele, which is called a homozygous genotype. Multiple allelism,  occurs when more than two gene forms exist for the same locus.

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Answer:

Experimentación con mezclas. Homogéneas y heterogéneas. Métodos de separación de mezclas con base en las propiedades físicas de sus componentes

Explanation:

Answer:

Large warm and cold air masses meeting

Explanation:

Jet streams are formed by warm and cold air masses meeting in the atmosphere.

Based on the diagram above which shows a model of the water cycle, letter X represents: A. the water table.

A water cycle is also referred to as hydrologic cycle and it can be defined as a biogeochemical process that is used to describe the continuous movement of water on land, in the atmosphere, and below the surface of planet Earth.

In Science, a water table is also referred to groundwater table and it simply describes the topmost portion of the underground zone on planet Earth that is usually saturated with water.

Based on scientific research and experiments, we can reasonably infer and logically deduce that the water table is represented by letter x in this diagram which shows a model of the water cycle

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Complete Question:

The diagram below shows a model of the water cycle. Letters A through F represent some processes of the water cycle. Letter X indicates the top of the underground zone that is saturated with water.

What does letter X represent?

answer choices

the water table

a flood plain

sea level

impermeable rock

Answer:

Explanation: The names of the compounds given are really large and complex molecules. They are asking for the building blocks of these molecules which is what the complex molecules are made of. One is given (glucose). They are also asking for the function of the building blocks, which means what is the building block of each molecule needed for in a human body. And the examples of those building blocks and functions.

It is possible for a white female rabbit to give birth to all white rabbits even if the father had a brown fur. This is largely due to chance.

Let us first consider the cross in question.

Brown fur is dominant over white fur. Assuming the brown allele is B while the white allele is b, a brown rabbit will have a genotype of either BB or Bb. A white rabbit, on the other hand, can only have a bb genotype.

This means that the genotype of the female rabbit will be bb. If the genotype of the brown fur father is BB:

   BB   x   bb

 Bb  Bb  Bb  Bb

All the offspring will have brown fur since B is dominant over b.

In other words, the genotype of the father rabbit can only be Bb.

   Bb    x    bb

Bb   Bb   bb   bb

Genotype ratio = 50% Bb : 50% bb

Phenotype ratio = 50% brown fur : 50% white fur

The chances of producing white fur offspring is 50% while that of brown fur offspring is also 50%. Given enough population of offspring, these chances will reflect.

However, with a small population of offspring, it is possible for either of the fur colors to be dominant. An all-white or all-brown fur offspring can result in a small population.

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This experiment and the results demonstrate the idea of recessive traits, in accordance with Mendel.

Gregor Mendel uncovered the basic principles of inheritance through his study on pea plants. He concluded that genes are inherited from each parent as separate, paired units. Mendel observed how parental genes separated and if they showed up as dominant or recessive qualities in the children.

(1) Paired Factors Principles

(2) The Dominance Principle

(3) Mendel's First Law of Inheritance, often known as the Law of Segregation or the Law of Purity of Gametes

(4) Mendel's Second Law of Inheritance, also known as the Law of Independent Assortment.

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I think it is Option B.

A virus must use cell processes to replicate. The viral replication cycle can produce dramatic biochemical and structural changes in the host cell, which may cause cell damage. These changes, called cytopathic (causing cell damage) effects, can change cell functions or even destroy the cell.

Answer:

I think the answer for that question is B

Answer:

Explanation:

There are three main ocean zones based on distance from shore. They are the intertidal zone, neritic zone, and oceanic zone. Distance from shore influences how many nutrients are in the water. Why? Most nutrients are washed into ocean water from land. Therefore, water closer to shore tends to have more nutrients. Living things need nutrients. So distance from shore also influences how many organisms live in the water. In addition to the amount of salts, other conditions in ocean water vary from place to place. One is the amount of nutrients in the water. Another is the amount of sunlight that reaches the water. These conditions depend mainly on two factors: distance from shore and depth of water. Oceans are divided into zones (Figure below) based on these two factors. The ocean floor makes up another zone.

There exist three main ocean zones as said by distance from shore . they're the intertidal zone,neritic zone,and oceanic zone . Distance from shore influences how many nutrients are in the water . Why ? Most nutrients are washed into ocean water from land . because,water closer to shore tends to have more nutrients . Living things need nutrients . So distance from shore also influences how many organisms live in the water . apart from the number of salts,other conditions in ocean water vary from place to place . One is the number of nutrients in the water . a one more is the number of sunlight that arrives the water . These conditions depend largely on two factors : distance from shore and depth of water . Oceans are divided into zones (Figure below) as said by these two factors . The ocean floor makes up an additional zone .

Answer:

1) no water loss from evaporation

2)less temperature fluctuation

3)less light, so predators can't see them

4)avoid competition w/ terrestrial species

Eutrophication is the system by way of which an entire frame of water, or parts of it, becomes progressively enriched with minerals and nutrients.

Especially nitrogen and phosphorus. It has also been defined as a nutrient-precipitated boom in phytoplankton productiveness. Eutrophication is a herbal manner that results from the accumulation of vitamins in lakes or other bodies of water. Algae that feed on nutrients develop into the water floor, decreasing value and water intake pipes.

Nutrient enrichment happens due to runoff from agricultural fields and so on. The rapid increase of algae and different plankton resulted in an algal bloom. Dissolved oxygen depletion and toxin era. Aquatic species die because of the loss of oxygen and manufacturing.

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Atoms transfer from non living portions of our environment to the living part of our environment through Food chain .

Physical and chemical processes move atoms through ecosystems. Organisms acquire the atoms they need from the ecosystem in which they live.

Plants consume nitrogen through their roots. Animals obtain nitrogen compounds when they eat the plants. When plants and animals die or when animals excrete wastes, the nitrogen compounds in the organic matter reenter the soil where they are broken down by microorganisms, known as decomposers. The nitrogen cycle involves three major steps nitrogen fixation, nitrification, and denitrification. It is a cycle within the biosphere which involves the atmosphere, hydrosphere, and lithosphere.

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The change in size of a group of organisms of the same species over time is called population growth (option A).

Population growth is the change in size of a group of organisms of the same species over a particular time.

The population growth rate also called the rate of increase or per capita growth rate equals the birth rate minus the death rate divided by the initial population size.

The population growth rate can be symbolized as follows: ∆P i.e. change in population size.

A population can be affected by the following;

Therefore, population growth is the change in population size of the species of that population.

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Answer:

The change in size of a group of organisms of the same species over time is called population growth

Explanation:

Answer: The factor which contributes to both chemical and mechanical weathering is water.

Explanation:

What is chemical weathering?

Chemical weathering is the erosion or disintegration of rocks, of soil materials, by chemical reactions.

The major factor contributing to chemical weathering is water and minerals  dissolved in it while mechanical weathering such as abrasion, freezing etc, is also caused by water.

Thus, we can conclude that, the factor which contributes to both chemical and mechanical weathering is water.

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The pancreas are associated with both exocrine and endocrine functions and they are directly related to digestion as they secrete pancreatic juice into the small intestine.

Pancreas is the organ whose major function can be characterized as the conversion of energy in the food into a form that can be used by the body of an organism.

The endocrine function of the pancreas is associated with regulating the sugar levels in the blood. On the other hand, the exocrine function of the pancreas is associated with the digestion process.

Pancreas is directly related to the digestion process because pancreatic juice is released into the duodenum region of the small intestine. The pancreatic juice contains digestive enzymes for the breakdown of food.

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Fontanelles frequently close earlier than expected due to achondroplasia, a hereditary condition that affects bone and cartilage development. Hypothyroidism: A thyroid gland disorder that interferes with hormone production. the Down syndrome.

A premature closure of this suture results in the baby's head becoming long and narrow (scaphocephaly). The most typical kind of craniosynostosis is this one. Right and left coronal sutures travel from each ear to the sagittal suture at the top of the skull in a condition known as coronal synostosis.

Fontanelles frequently close earlier than expected due to achondroplasia, a hereditary condition that affects bone and cartilage development. Hypothyroidism: A thyroid gland disorder that interferes with hormone production. the Down syndrome.

By 1 or 2 months of age, the posterior fontanelle normally closes. It might have been closed before birth. Usually, the anterior fontanelle shuts between the ages of 9 and 18 months. The development and expansion of the infant's brain depend on the sutures and fontanelles.

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