how might observations of extant living organisms contribute to the evidence for evolution

Answer:

I'm going to go with b.

Explanation:

The operator in Python allows you to build a string by repeating another string a given number of times. This statement is true.

In Python, the * operator, also known as the repetition operator, allows you to repeat a string a certain number of times. When applied to a string, the * operator takes two operands: the string itself and an integer specifying the number of times the string should be repeated. For example, if you have a string "Hello" and multiply it by 3 using the * operator, like this: "Hello" * 3, the result will be "HelloHelloHello".

This behaviour of the * operator can be useful in various situations. It allows you to easily create repeated patterns or generate longer strings based on existing ones. By specifying a negative number as the multiplier, you can obtain an empty string as the result.

In conclusion, the statement that the operator in Python allows you to build a string by repeating another string a given number of times is true. The * operator provides a convenient way to repeat a string and is commonly used in Python programming.

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Answer:

no there was not

1. The male superhero cannot teleport. So, the probable genotype is Xt Y

While the female superhero can teleport, but her mother could not. The probable genotype would be XTXt.

In order to get these genotypes for teleporting abilities, we first assign thegenotypes of the parents, which are:

Father- XT Y

Mother (do not have teleporting abilities)- XtXt

Answer:

Gravity is what holds the universe together, gravity gets help from the solar system and planets and the stars and all together if holds the planets in orbit around the sun and moon

Explanation:

To determine the possible blood types of the biological father based on Mary and Brandon's blood types, we need to consider the principles of ABO and Rh blood typing.

First, let's review the ABO blood group system. This system is based on the presence or absence of two antigens on the surface of red blood cells: antigen A and antigen B. There are four possible blood types in the ABO system: A, B, AB, and O. Mary has blood type O, which means that she has neither antigen A nor antigen B on her red blood cells. Brandon has blood type AB, which means that he has both antigen A and antigen B on his red blood cells. From this information, we can deduce that Mary must have two copies of the O allele (OO genotype), while Brandon has one copy of the A allele and one copy of the B allele (AB genotype).

Mary's Rh status is not specified in the question, so we cannot make any assumptions about it. However, we do know that Brandon is Rh+. This means that he must have at least one copy of the Rh+ allele (Rh+/Rh- genotype).
We can use Punnett squares to visualize the different combinations of alleles that Mary and the father could have contributed to their child.
If the biological father is also Rh+, then the possible blood types of the child are:
- A+ (if the father is AA or AO)
- B+ (if the father is BB or BO)
- AB+ (if the father is AB)
- O+ (if the father is OO)

If the biological father is Rh-, then the possible blood types of the child are:
- A- (if the father is AO or OO)
- B- (if the father is BO or OO)
- AB- (if the father is AB, AO, or BO)
- O- (if the father is OO)

In summary, the possible blood types of the biological father depend on his ABO and Rh blood typing. If he is Rh+, then the child could have any ABO blood type (A, B, AB, or O) that is either Rh+ or Rh-. If he is Rh-, then the child could have any ABO blood type that is Rh-.

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Answer:

Both the terms "living" and "biotic" describe an organism that holds life. However, an organisms stops "living" after it dies, but never stops being "biotic". This is because "biotic" means anything that has ever had life, whereas "living" only describes things currently alive.

Explanation:

Brainliest please?

Answer:

Explanation:

A RCB (red blood cell) present in human beings does not have a cell wall, only plants have cell wall.

Here,

The RCB has,

Cell wall - absent

Nucleus - present

Option B

The kinds of cells carry out ATP synthesis by chemiosmosis are (D) all respiring cells, both prokaryotic and eukaryotic, using either oxygen or other electron acceptors.

Electron acceptors are compounds that accept electrons transferred to them from some other compound. There are various electron acceptors involved in the process of respiration. These are: coenzymes like NAD⁺ and FAD⁺. Oxygen is the final electron acceptor in cellular respiration.

Chemiosmosis is the process of pumping protons from the intermembrane space into the matrix to produce a gradient. This gradient is then used for ATP synthesis. In prokaryotes where cell organelles are absent, these processes occur in the cell membrane.

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(A)

Explanation:

the 10 chromosome will have double the daughter cells

Answer:

When the hypothalamus senses you're too cold it sends signals to your muscles that make you shiver to stay warm. It also controls your blood pressure to keep you warm.

Answer:

you shiver as your blood veins shrink to maintain body heat

Answer:

invasive species threaten biodiversity

Explanation:

they can take up an inoordinate amount of resources that affect people and animals. they are different from reintroducing a species. invasive species are bad for biodiveristy.

nice air, plants and animals

Explanation:

you need to keep everything safe so it won't die over

Predation: Both predator and prey species have balanced numbers, preventing any from becoming overly large and endangering the other.

Environmental factors: Variations in the environment, such as changes in temperature, precipitation, or sunlight, can have an impact on a species ability to survive and reproduce. The populations of creatures adapt and remain largely steady under a stable environment.

The overall number of species is largely maintained constant by this equilibrium. Competition can prevent a population from growing too large by limiting access to resources like food, water, and shelter.

Some species move to various environments in search of resources or to escape unpleasant circumstances. The movement of living things can support the balance of populations in various ecosystems.

Natural catastrophes: Natural catastrophes, like fires, floods, or earthquakes, can significantly affect populations of creatures. However, populations typically rebound and reach their baseline levels over time.

In conclusion, migration, competition for resources, environmental stability, predator-prey balance, and recovery from natural disasters all contribute to the stability of the population of species in a natural habitat from year to year.

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The given statement "the primary goal of surgical closure of the palate is to establish an intact division between the oral and nasal cavities, as well as to create a fully functional velopharyngeal system" is True.

This is important to improve speech, swallowing, and overall quality of life for the patient.

The surgical procedure involves several steps.

First, the surgeon will carefully assess the patient's palate and the surrounding structures. This assessment helps to determine the appropriate surgical approach and techniques to achieve the desired outcome.
Next, the surgeon will make incisions on both sides of the cleft palate, which will allow the tissues to be repositioned and reconnected. This process is called tissue mobilization and is essential to create an intact separation between the oral and nasal cavities.
Once the tissues have been mobilized, the surgeon will carefully suture the muscles and other soft tissues in the palate to create a functional velopharyngeal system.

The velopharyngeal system plays a critical role in speech and swallowing, as it controls the opening and closing of the connection between the oral and nasal cavities during these functions.
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At low light levels, green leaves are most efficient at photosynthesis. But well yeah, in sunny days, red light will work the same as green light

The most appropriate unit of time for the number of bacteria to be 600 is 20 minutes.

The population of bacteria in a petri dish triples every 10 minutes. This means that the population will double every 5 minutes.

If the initial population of bacteria is 400 organisms, it will take 20 minutes for the population to reach 600 organisms.

To calculate this, we can use the equation:

Time (minutes) = Log3 (600/400) x 10

Time (minutes) = Log3 (1.5) x 10

Time (minutes) = 0.47712125 x 10

Time (minutes) = 4.7712125

Time (minutes) = 20 minutes

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Answer:

When carbon dioxide dissolves in seawater, the water becomes more acidic and the ocean’s pH (a measure of how acidic or basic the ocean is) drops. Even though the ocean is immense, enough carbon dioxide can have a major impact. In the past 200 years alone, ocean water has become 30 percent more acidic, faster than any known change in ocean chemistry in the last 50 million years.

Explanation:

Answer:

The best explanation for the increased lymphocyte levels in Kaya is that she was not tissue typed prior to her surgery, and her body is mounting an immune response.

Explanation:

When performing an organ transplant, it must be verified whether the organ to be transplanted is compatible -by tissue typing- with the recipient, since it is recognized as a foreign body by the body and can be rejected.

One of the immunological responses to organ rejection is called cell rejection, involving T-helper and cytotoxic lymphocytes.

It is very likely that in Kaya's case the tests have not been performed correctly, and she is experiencing rejection of the organ she received. The progressive increase in lymphocytes may be an indication of this.

The other options are not possible because:

Answer:

Sheep, goats, antelopes, and deer are all members of the Order Artiodactyla, which is also known as even-toed ungulates. However, the deer branched off and evolved separately from sheep, goats, and antelopes. Deers are member of the family Cervidae, whereas sheep, goats and antelopes are from family Bovidae.

Therefore, these animals did not evolve from a common ancestor that has horns. Instead, they all evolved from a hoofed mammal. Moreover, the deer evolved from a cervid that has antlers, whereas, sheep, goats, and antelopes evolved from a bovid that has horns.

The term that applies to the phylum Mollusca is protostome. The correct option is A) protostome.

This is because molluscs belong to a clade called Protostomia, which includes other invertebrates like arthropods, annelids, and many more. Protostomia is one of the two clades that divide bilaterally symmetrical animals into two groups.

The protostomes are further divided into two groups: Ecdysozoa and Lophotrochozoa. Molluscs belong to the Lophotrochozoa group. Some of the features that they share are a true coelom, a trochophore larval stage, and a specific way of forming the mouth and anus called protostomes.

The other options mentioned in the question are not applicable to the phylum Mollusca: Pseudocoelomate is a term used for animals like nematodes that have a fluid-filled cavity between the mesoderm and the endoderm.

Parazoa is a subkingdom used to describe animals that lack true tissues and organs, like sponges. Diploblastic is used to describe animals with two germ layers, like cnidarians. And asymmetry is a term used to describe animals that lack symmetry, like sponges as well.

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Answer:

D

Explanation:

A suspects nuclear DNA sample is matched to an unknown sample of mt dNA that was found at a crime scene

A suspect's nuclear DNA sample is matched to an unknown sample of mtDNA that was found at a crime scene.

Nuclear DNA (nDNA), or id, is the DNA contained whin each cell nucleus of a eukaryotic to Mendelian inheritance, with information coming from two parents, one male and one female—rather than matrilineally (through the mother) as in mitochondrial DNA.

Nuclear DNA is a nucleic acid, a polymeric biomolecule or biopolymer, found in the nucleus of eukaryotic cells. Its structure is a double helix, with two strands wound around each other, a structure first described by Francis Crick and James D. Watson (1953) using data collected by Rosalind Franklin. Each strand is a long polymer chain of repeating nucleotides. Each nucleotide is composed of a five-carbon sugar, a phosphate group, and an organic base. Nucleotides are distinguished by their bases: purines, large bases that include adenine and guanine; and pyrimidines, small bases that include thymine and cytosine. Chargaff's rules state that adenine always pairs with thymine, and guanine with cytosine. The phosphate groups are held together by a phosphodiester bond and the bases are held together by hydrogen bonds.

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Answer:

ribosomes and DNA i never heard of the last one

Explanation:

edgeunity 2020 unit test

The complete statement is as follows: Prokaryotic cells regulate genes using transcription (option B).

Gene expression is the transcription and translation of a gene into messenger RNA and thus into a protein.

Prokaryotic gene expression (both transcription and translation) occurs within the cytoplasm of a cell due to the lack of a defined nucleus.

The regulation of gene expression in prokaryotic cells occurs at the transcriptional level. It involves the turning on and off of genes at the level of transcription in prokaryotic cells.

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Answer:

The discovery of the Double Dna Helix was done by Watson and Crick.

Answer:

Chargaff's realization that A = T and C = G, combined with the vital work of X-ray crystallography by English researchers Rosalind Franklin and Maurice Wilkins, contributed to the discovery of Watson and Crick a three-dimensional, two-helical DNA model.

Explanation:

Ecosystem A is more diverse because it has a more even distribution of species.

What is an ecosystem?

An ecosystem is a community of living organisms (plants, animals and microbes) in conjunction with the nonliving components of their environment (air, water and mineral soil), interacting as a system. These components are linked together through nutrient cycles and energy flows.

A more even distribution of species implies that each species is represented in roughly equal proportions, which suggests that no one species is dominating the ecosystem. This even distribution of species allows for a greater diversity of interactions and niches within the ecosystem, resulting in higher overall diversity.

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Hello

There are many different types of cells in animals. Each type is specialised to do a particular role. These ensure that the organism functions as a whole.

The number of mitochondria and the presence of flagella in a cell provide important information about the cell type and its function.

Mitochondria are organelles found in the cytoplasm of eukaryotic cells and are responsible for producing the energy needed for the cell to survive and carry out its functions.

Flagella are long, whip-like structures that help cells move in a liquid environment. The number of mitochondria present in a cell can indicate the energy demands of that cell.

Cells that require a lot of energy, such as muscle cells, will have a higher number of mitochondria. Cells that require less energy, such as nerve cells, will have fewer mitochondria. The presence of flagella can indicate the type of environment in which the cell lives. Cells that live in a liquid environment, such as bacteria, will have flagella to help them move around.

Cells that live in a solid environment, such as plant cells, will not have flagella. In conclusion, the number of mitochondria and the presence of flagella in a cell can provide important information about the cell type and its function. Cells with a higher number of mitochondria require more energy and those with flagella live in a liquid environment.

Hence, Knowing this information can help us better understand the function and behavior of different cell types.

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