According to the concept of punctuated equilibrium, the "sudden" appearance of a new species in the fossil record means that
(A) the species is now extinct
(B) speciation occurred in one generation
(C) speciation occurred rapidly in geologic time
(D) the species will consequently have a relatively short existence compared with other species

Answer:

Amoeba and Euglena

Explanation:

Amoeba are any of numerous freshwater, marine, or parasitic one-celled protozoa of the order Amoeboid, characterized by a granular nucleus surrounded by a jellylike mass of cytoplasm that forms temporary extensions, or pseudopodia, by which the organism moves, engulfs food particles, and forms food vacuoles.  

Euglena refers to a genus of green fresh water protozoans having a reddish eyespot and a single flagellum, found especially in stagnant waters.

Since they both pertain to the Phylum Protista and exhibit comparable traits, Amoeba and Euglena are more closely related to one another than any other combination of organisms.

The two organisms that are closely related to each other more than any other pair of organisms are Amoeba and Euglena.

The amoeba and euglena both are singular-cell organisms. Amoeba and Euglena Both are eukaryotes having membrane-bound nuclei, other shared eukaryotic features, and chromosomes. Both are members of Kingdom Protista.

Amoebas are any of numerous freshwater and are characterized as small size grain nucleus which is surrounded by a jelly-like mass of cytoplasm that forms the ability to alter its shape, primarily by extending and retracting pseudopods. Euglena refers to a group of green freshwater protozoans, the cells are tear-drop shaped with a blunt end which is a head, and a pointed end.

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Sister chromatids differ from non-sister chromatids in that sister chromatids are two copies of a single chromosome and are products of the S phase of the cell cycle.

When a cell divides, there are two types of chromatids: sister chromatids and non-sister chromatids. During the early stages of cell division, chromatoids are produced. Nonsister chromatids appear during metaphase I of meiosis, whereas sister chromatids replicate from the same chromosome. The centromere links sister chromatids together. On the cell equator, the homologous chromosome pair contains non-sister chromatids. The fact that sister chromatids contain the same allele in the same loci, whereas non-sister chromatids do not, is the primary distinction between the two types of chromatids.

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The correct sequence, from earliest to most recent, in which these plant traits originated is:

c. 2 -> 1 -> 3

1. sporophyte dominance, gametophyte independence (2) - This trait originated first, where the sporophyte generation became dominant in the plant life cycle, and the gametophyte generation became less independent.

2. sporophyte dominance, gametophyte dependence (1) - This trait originated next, where the sporophyte generation remained dominant, but the gametophyte generation became more dependent on the sporophyte for nutrition and support.

3. gametophyte dominance, sporophyte dependence (3) - This trait originated last, where the gametophyte generation became dominant in the plant life cycle, and the sporophyte generation became dependent on the gametophyte for nutrition and support.

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Answer:

Yes, they can. Birth defects can impact a chromosone count. People with down syndrom have more than 46 chromosones and it occurs when someone is born with a full or partial extra copy of chromosome 21.

Explanation:

The components of bile include bile salts, cholesterol, potassium and sodium salts, and so on.

Bile is fluid found in the gall bladder of advanced animals. It is made in the liver and has a wide range of functions in the body systems of animals.

The functions of the bile include:

The components of bile include:

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Answer:

Question 1 ; C | Question 4 ; Chlorophyll

Explanation:

Question 1 explanation; Photosynthesis is the process in which plants use sunlight, water, carbon dioxide, to create oxygen and energy in the form of sugars. The sugar then goes through the process of cellular respiration and is used to make energy in the form of ATP.

Question 2 explanation; Chlorophyll, is the main pigment used in photosynthesis, which reflects green light and strongly absorbs blue and red light. For plants, photosynthesis takes place in chloroplasts (a small organelle inside the cells of plants and algae) , which contain chlorophyll.

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RNA from a bear is compared to RNA from a sunflower, both will contain the sugar ribose and the base uracil.

In conclusion, if RNA from a bear is compared to RNA from a sunflower, both will contain the sugar ribose and the base uracil.

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Answer:

16 chromosomes because if a body cell (diploid) has 32 chromosomes, you need to divide it by 2 to get your egg cell

Explanation:

Euglenozoa are monophyletic group of flagellated protists as well as free-living, symbiotic, and parasitic species. According to genetic studies, Euglenozoa are meither plant nor animal despite the suffix zoa. They are somewhat the living dependent of a few of the primal unicellular organisms called eukaryotes. It is also a genus of unicellular flagellate protists where the word "unicellular" means that the organism consists of one cell only that's why they're not considered plant or animals.

Answer: A

 nitrogen (N)

Explanation:

Nitrogen is found in both Protein and nucleic acid.

The element that is missing in the chart with respect to the information given in the question is known as nitrogen.

Macromolecules may be defined as large, complicated molecules which are typically constructed from the product of smaller molecules such as carbohydrates, lipids, proteins, nucleic acids, etc. They are significantly made of repeating subunits referred to as monomers.

Monomers particularly combine on either end in order to form long, and often complex, larger polymer macromolecules. According to the context of this question, an important element that helps to distinguish proteins and nucleic acids from carbohydrates and lipids is nitrogen. This is because nitrogen is present in both proteins as well nucleic acids.

Therefore, nitrogen is the element that is missing in the chart with respect to the information given in the question.

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If you apply the same net force but more mass, the acceleration will be reduced, therefore the item will accelerate by just 1/3 as much.

The push or pull on a mass-containing item changes its velocity. An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude.

An acceleration-inducing push is referred to as a force. This can literally mean pushing anything, such as moving a large piece of furniture around a room by pushing on it. That might not be as concrete as pressing the gas pedal on a car.

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Carbohydrate intake immediately or one hour after resistance exercise reduces protein breakdown and enhances protein retention.

When engaging in resistance exercise, such as weightlifting or strength training, the muscles undergo stress and microdamage. This triggers a process called muscle protein breakdown, where muscle proteins are broken down to provide amino acids for energy and repair. However, the goal of resistance exercise is to promote muscle growth and repair, which requires a positive protein balance.

Carbohydrate intake after resistance exercise plays a crucial role in promoting muscle protein retention. When carbohydrates are consumed after exercise, they stimulate the release of insulin. Insulin is an anabolic hormone that promotes muscle protein synthesis and inhibits protein breakdown. By increasing insulin levels, carbohydrate intake after resistance exercise creates an optimal environment for muscle protein retention and repair.

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Answer: Products of respiration:

Glucose and oxygen

Carbon dioxide and water (and ATP)

An example of an environment in which natural selection would not occur is a place where all offspring have the same chance of survival. Thus, the correct option for this question is B.

Natural selection may be defined as a type of strategy or process in nature through which organisms particularly gets better adapted to their environment and tend to survive and reproduce more than those less adapted to their environment.

Genetic diversity always favors the process of natural selection to occur. And this genetic diversity is generally induced by evolutionary forces like genetic drift, mutation, migration, etc.

Apart from this, offspring inherit beneficial and detrimental traits from parents and offspring have a physical trait that helps the organism compete more successfully and are also more prone to natural selection.

Therefore, an example of an environment in which natural selection would not occur is a place where all offspring have the same chance of survival. Thus, the correct option for this question is B.

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Grading is the term that is used for histologic characterization of tumor cells.

The grading of a tumor cell helps us understand the severity of the tumor. If a cell looks more normal, then this will means that the tumor is not in such a bad condition. However, if the grading shows that the cells are more abnormal, then the condition will be more severe. In this way, grading is used for the histologic characterization of tumor.

To grade a tumor, a doctor will have to perform a biopsy in order to obtains tissues from the specific area of the body. The values for grading a tumor are X, 1, 2, 3, or 4.

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The types of selection that could produce an increased proportion of lizards with large jaws are A. disruptive selection and B. directional selection.

Disruptive selection occurs when extreme phenotypes are favoured over the average phenotype. In the case of the lizards, if large-jawed lizards are better able to survive and reproduce than those with average or small jaws, disruptive selection will lead to an increased proportion of large-jawed lizards in the population.

Directional selection occurs when one extreme phenotype is favoured over the other extreme and the average phenotype. In the case of the lizards, if large-jawed lizards are better able to survive and reproduce than those with average or small jaws, directional selection will lead to an increased proportion of large-jawed lizards in the population.

Stabilizing selection, on the other hand, favours the average phenotype and selects against the extremes. Therefore, it would not lead to an increased proportion of large-jawed lizards in the population.

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Answer:

Enzymes are proteins that act as biological catalysts,  Enzymes speed up chemical reactions that take place in cells.

Explanation:

The genotypes AA and Aa always show up as the dominant.

Genes are the material that carries the properties of the parent and are passed on to their filial or offspring. Genes are attached to chromosomes and chromosomes are contained in the nucleus or cell nucleus.

Chromosomes in the body are usually in pairs. In humans, there are 46 or 23 pairs of chromosomes. 22 pairs are autosomal chromosomes, namely the chromosomes that make up the body, such as the eyes, nose, legs, hands and other organs.

One more pair is called the genosome chromosomes, namely the sex chromosomes, the chromosomes that determine the sex of the individual. When the chromosomes pair X and X (XX), the sex is female. And if the chromosome pair is X and Y (XY), then the sex is male.

Chromosomes contain genes and the inherited genes are dominant and recessive. Dominant trait means, a trait that dominates and overpowers other traits. For example, both parents have olive and black skin tones. And it was obtained that all of his offspring had olive skin color.

This means that the olive skin color gene is dominant over the black skin color gene. The black gene is called a recessive gene, that is, a gene that is hidden and defeated.

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This new information challenges the experimenters' conclusion regarding the source of genetic information because it suggests that nucleic acids are not composed of a single tetramer but rather a polymer of repeating units.

It contradicts the assumption of a circular, sugar-phosphate backbone and challenges the understanding of the structure and composition of nucleic acids. The discovery of nucleic acids being composed of repeating units called nucleotides, rather than a single tetramer, has significant implications for understanding genetic information. Nucleotides consist of a nitrogenous base, a sugar molecule, and a phosphate group. These nucleotides link together in a linear sequence to form a polynucleotide chain, where the sugar-phosphate backbones are connected by phosphodiester bonds. The recognition of the true structure and composition of nucleic acids, with their linear polymer nature, challenges the initial assumption made by the experimenters. This new information emphasizes the importance of accurately understanding the molecular structure and organization of nucleic acids in deciphering the source and transmission of genetic information.

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The myelin sheath is made of a high percentage of lipids, specifically cholesterol and sphingolipids. These lipids make up the insulating layer around nerve fibers, allowing for faster and more efficient transmission of signals throughout the nervous system.

Myelin is essential for proper neurological function, as damage or degradation of the myelin sheath can lead to a variety of disorders such as multiple sclerosis. In addition to its role in nerve transmission, myelin also provides metabolic support to the neurons it surrounds, helping to maintain the health and vitality of these cells. Overall, the high lipid content of myelin is critical for its function and importance in the nervous system.
The myelin sheath is made of a high percentage of lipids, specifically about 70-80%. The remaining 20-30% is comprised of proteins. Myelin is a fatty substance that wraps around the axons of neurons, functioning to insulate and speed up the transmission of electrical signals (action potentials) in the nervous system. The presence of myelin greatly enhances the efficiency of nerve signal transmission and is crucial for the proper functioning of the nervous system.

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Answer:

: to deliver a blow : hit. sock it to. slang.

Explanation:

Answer:

there are four most abundant elements in the human body – hydrogen, oxygen, carbon and nitrogen – account for more than 99 per cent of the atoms inside you. They are found throughout your body, mostly as water but also as components of biomolecules such as proteins, fats, DNA and carbohydrates.

Explanation:

oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus.

Keratinocytes are differentiated skin cells found in the outermost layer of the epidermis. Dendritic cells are antigen-presenting cells that play important roles in the adaptive immune response.

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Answer:

Pillars in an abandoned mine

Explanation:

Answer: Ribosomes most of the time.

Explanation:

Answer:

Anthropology: Peoples origin and ancient culture.

Economics: Distribution of products and services.

Geography: Location of landforms and natural resources of the earth.

Philosophy: Personal opinion of origin and conduct of life.

Psychology: Behavior dealing with the mind, will, and emotions.

Sociology: Effects and relationships of communities.

Explanation:

I hope it helps!!

Answer: Anthropology: Peoples origin and ancient culture.

Economics: Distribution of products and services.

Geography: Location of landforms and natural resources of the earth.

Philosophy: Personal opinion of origin and conduct of life.

Psychology: Behavior dealing with the mind, will, and emotions.

Sociology: Effects and relationships of communities.

Explanation:

help done

Answer:

all of the above

Explanation: