Word Roots and Origins The word Actinopterygii comes from the Greek actinos, meaning "ray," and pteryx, meaning "wing" or "fin." Using this information, explain why Actinopterygii is a good name for these fish.

Another level of genetic variation is added by random fertilization , since we can't predict which sperm will fertilize a given egg.

A new individual organism or progeny is created when two gametes are fused during fertilization, often referred to as fertilization, impregnation, syngamy, and generative fertilization. The term "fertilization" is often used colloquially to refer to pre-gametic processes like pollination and insemination. The cycle of fertilization and development of new individuals is called sexual reproduction. In the process of vegetative fertilization, the haploid male gamete of an angiosperm fuses with two haploid polar nuclei to create a triploid main endosperm nucleus.

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Answer:

False

Explanation:

Because each nuclei has a different meiosis

Answer:

D) a visual image of a chromosomal defect

Explanation:

The genetic disorders, or inheritance of traits, and abnormality in the chromosome can be studied through pedigree charts and karyotyping.

The correct answer is Option D, a visual image of a chromosomal defect.

The difference between karyotype and pedigree chart can be explained as:

Thus, the correct answer is Option D.

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Answer:

Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis ). Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane.

Answer:

d

Explanation:

Answer:

the correct answer is: "They ingest their food."

Explanation:

The statement about animals that is incorrect is: "They ingest their food." Animals have diverse feeding strategies, and while most animals ingest their food, there are exceptions. For example, some animals, like sponges, filter-feed by extracting food particles from water, and they do not actively ingest their food. Therefore, the correct answer is: "They ingest their food."

Answer:

Explanation:

the carbon dioxide molecule encounters the structures in the following order: 5) capillaries near muscle cells, 2) systemic vein, 1) heart, 4) pulmonary artery, and 3) alveolar capillaries.

Answer:

Show that life can only come from life (rather than spontaneous generation)

Explanation:

Pasteur boiled a broth in a flask with an S-shaped neck. Thebend in the neck prevented particles from the air reaching the broth, but still allowed air to get in.  No bacteria grew in the flask.  

When the flask neck was broken so that particles could get inside, the broth became cloudy, showing that microorganisms were only able to grow from other living things from the outside, and not spontaneously from nothing

Vitamin B1 also known as thiamine acts as a coenzyme in cell respiration and is also important in alcoholic fermentation.

Certain organic compounds are required in small amounts by our bodies but their deficiency of them causes diseases. Such compounds are known as vitamins.

The term vitamin comes from the two words vital and amine because some of them contain an amino group.

The vitamins are named after letters of the English alphabet like A, B, C, D, E, and K.

Vitamin B is of different types like B1, B2, B6, B12, etc.

Out of different types of Vitamin B, Vitamin B1(Thiamine) is the only one that acts as a coenzyme in cell respiration and is also important in alcoholic fermentation.

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Answer: Natural selection

Explanation: Organisms with more advantageous allele are more likely to survive and pass on these alleles to their viable offspring

Explanation:

Carrying capacity refers to the maximum number of individuals of a certain species an environment can maintain in the long-term.

Factors that will determine carrying capacity include amount of water available in the environment, geographic size of environment, energy sources available, and so forth.

The image below shows the general idea of carrying capacity and population size:

The reality is often not so simple, as populations can overshoot their carrying capacity. When this happens, it takes some time for the population numbers to decrease. Thus, graphs more realistically resemble the one below:

Over time and with no disturbances, the population will generally max out at the carrying capacity. It is also important to remember that environments may not be unchanging, especially in certain time scales. For example, an increase in rainfall one year may mean that there is far more standing water available in the environment. Thus, mosquito populations will temporarily increase as the carrying capacity for them allows for higher numbers.

Answer:

A minimum of 3 observations will produce reproducible results

Explanation:

Often, when simulations are carried out to observe for natural selection, it will be safe to conduct >3 observations to reduce the likelihood of errors. Errors could affect the reproducibility of the results which researchers will not want to compromise. The models ( for example the physical natural selection simulation or the virtual natural selection simulation methods) that are used provide for more observations to be made to ensure more accurate results and interpretations are obtained.

Answer:

they compare fossils to other fossils to see if skeleton changes are observed in a species over time it indicates that there is genetic change going on within the species

Answer:

Science uses fossil evidence to support evolution theories because you can link similar fossils among creatures from millions of years ago, to the living creatures of today.

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Exercise intensity and duration are the main factors that  influence the contribution of carbohydrates vs. fats as fuel to make ATP. Exercise intensity increase cells use a higher ratio of carbohydrate to make ATP.

ATP obtained from lipid oxidation is over twice the amount obtained from carbohydrate and amino acid.  During the high intensity exercise , carbohydrate are the major fuel source. During low intensity exercise fat is the primary source of fuel your body uses.

Oxidation reactions in the cytoplasm and mitochondria of cell produced ATP and carbohydrate , proteins and fats undergo  a series of metabolic reactions collectively called cellular respiration.

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In an area of the body where blood was relatively acidic (low ph), you can predict that the enzymes will be affected or deactivated because of the change in the pH value.

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The animal that takes energy from more than one trophic level is eagle due to eating of many organisms.

The eagle is the animal that takes energy from more than one trophic level in the given food web because in this food web eagle feeds on animals such as rabbit, reptile such as snake and bird such as owls.

So we can conclude that the animal that takes energy from more than one trophic level is eagle.

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In this case, the owls and eagles are two animals that occupy more than one trophic level in the food web.

A trophic level is a specific position in the food web that one population and/or organism occupies in the ecosystem.

An organism can have different roles in an ecosystem and thus occupy more than one trophic level.

Organisms in the first trophic level are called producers, whereas primary consumers are located in the second level.

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Answer:

A) Mitochondria and Chloroplasts

Answer:

Trees give out oxygen to the earth. Plants grow vegatables and fruits for people on earth.

Explanation:

Epitelio cuboidal simple Epitelio

Answer:

Asexual reproduction are reproduction that does not form by mating between male and a female.

Asexual reproduction is a type of reproduction that involves the production of offspring without the involvement of gametes.

Asexual reproduction is a type of reproduction that occurs without the fusion of two sexes. It is a form of reproduction that only requires one parent, and is common among single-celled organisms such as bacteria and protists. It involves the production of genetically identical offspring, as the parent organism passes on its genetic material to its offspring, who are exact duplicates of the parent. Asexual reproduction does not involve the formation of gametes, and is typically a faster process than sexual reproduction. It is also the only type of reproduction possible for organisms that are not able to form sexual organs or do not have two sexes.

Examples of organisms that reproduce asexually include some plants, fungi, and certain types of bacteria.

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Answer:

Felsic

Explanation:

Magma or igneous rock that is rich in feldspars and silica and that is generally light in color.

Answer:

felsic: this magma that is rich in feldspar and silica

Answer:

In the first reaction, energy is used to split water molecules into hydrogen and oxygen. The hydrogen is needed for the second stage of reactions and the oxygen is released by the plant as a waste product. In the reactions of the second stage, the hydrogen is combined with carbon dioxide to make glucose.

Answer:In the first reaction, energy is used to split water molecules into hydrogen and oxygen.

Explanation: The hydrogen is needed for the second stage of reactions and the oxygen is released by the plant as a waste product. In the reactions of the second stage, the hydrogen is combined with carbon dioxide to make glucose.

Answer:

Explanation:

Blood brings oxygen and nutrients to all the parts of the body so they can keep working. Blood carries carbon dioxide and other waste materials to the lungs, kidneys, and digestive system to be removed from the body. Blood also fights infections and carries hormones around the body.

The body's transportation system, the blood, transports innumerable compounds to different parts of the body. Blood carries three things throughout the body: Oxygen, nutrients, and wastes such as carbon dioxide (CO2).

1. Blood carries oxygen from the lungs to all the cells of the body. Cellular respiration requires oxygen to generate the energy (in the form of ATP) that drives many bodily activities.

2. Blood carries nutrients absorbed by the digestive system to cells throughout the body. These nutrients, which are essential for growth, repair and building energy, include glucose, amino acids, fatty acids, vitamins and minerals.

3. Wastes such as \(CO_2\): Removes carbon dioxide from the blood cells, which is a byproduct of cellular metabolism, and carries it to the lungs for expiration. The acid-base balance of the body is maintained by this mechanism.

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Answer:

ʕ·ᴥ·ʔ The wind ʕ·ᴥ·ʔ...

Answer: It could have a temperature difference or could be the same temperature

Explanation:

If all enzymes work at different temperatures some enzymes might work at 38 degrees C or 37 degrees c etc.

Based on the information provided, it can be inferred that Enzyme 2 is most active at a temperature different from 37 degrees Celsius, the body temperature of humans.

Enzyme activity refers to the ability of an enzyme to catalyze a chemical reaction. Enzymes are proteins that facilitate chemical reactions in the body, and they do so by lowering the activation energy required for the reaction to occur. This allows the reaction to proceed more quickly and efficiently.

Enzyme activity can be affected by various factors, including temperature, pH, and the presence of specific substrates or inhibitors. Different enzymes have optimal temperatures at which they function most efficiently, and these can vary widely depending on the enzyme and the organism in which it is found.

Some enzymes are more stable and can function over a wide range of temperatures, while others are less stable and may be denatured or become inactive at higher or lower temperatures

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The mechanism that drives the preferential selection of immunoglobulins with the highest affinity for antigen is known as affinity maturation.

Affinity maturation is a process that occurs during the immune response, specifically in the germinal centers of secondary lymphoid organs. During this process, B cells undergo somatic hypermutation, where they randomly introduce mutations in the variable regions of their immunoglobulin genes. B cells with mutations that lead to increased affinity for antigen are selectively amplified, while those with lower affinity are eliminated. This leads to the production of high-affinity antibodies that are better able to neutralize the antigen and provide long-lasting protection against future infections. In summary, affinity maturation is a complex and dynamic process that helps to ensure that the immune system produces the most effective antibodies possible.

Affinity maturation is a mechanism that drives the preferential selection of immunoglobulins with the highest affinity for antigen.

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