Which feature do scientists mainly consider when grouping organisms according to evolutionary classification?

Organic molecules are more complex than inorganic molecules. They generally have carbon hydrogen and carbon oxygen bonds.

Organic molecules generally have carbon, oxygen and hydrogen bonds. Organic chemistry is a branch of chemistry that deals with organic chemistry.

Organic molecules are compounds with complicated structures. Carbohydrates, lipids and proteins are some kind of organic molecules.  Organic molecules are generally larger than inorganic molecules.

Carbon chain in organic molecules can be straight, branched or ring shaped. This compounds have some functional groups such as hydroxyl, methyl and carbonyl.

Therefore, Organic molecules are more complex than inorganic molecules. They generally have carbon hydrogen and carbon oxygen bonds.

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Answer:

d. All of the above

Explanation:

All of the given choices are reasons to study the ocean carbon cycle. The ocean occupies about 70% of the earth surface area and it plays important roles in carbon cycling.

Answer:

The real answer is A

Explanation: edge 2021

the correct options are:
- Dendritic cell trafficking would be impaired.
- T cells would not be able to enter lymph nodes.

If mice deficient in lymphotoxin-beta (LTb-/-) have no high endothelial venules (HEV) and are immunized via the footpad with a virus, the following outcomes would be expected:
- Dendritic cell trafficking would be impaired: High endothelial venules (HEV) play a crucial role in facilitating the entry of dendritic cells into lymph nodes. In the absence of HEV, dendritic cell trafficking would be impaired.
- No activation of neutrophils: Neutrophils are not primarily dependent on HEV for their activation or recruitment to lymph nodes. Therefore, their activation would not be affected in LTb-/- mice lacking HEV.
- T cells would not be able to enter lymph nodes: HEV provide the specialized entry points for T cells to migrate from the bloodstream into lymph nodes. In the absence of HEV, T cells would be unable to enter the lymph nodes, impairing the immune response.
- B cells would exit through the afferent lymphatics: Without HEV, B cells may not efficiently enter lymph nodes. However, B cells can exit lymph nodes through the afferent lymphatics, bypassing the need for HEV.



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Answer:

the nucleus

Explanation:

Nucleus is the answer.

Hiroto, a Japanese American living in Camp Harmony, Washington, was finally released from the evacuation camp as a result of the end of World War II and the subsequent closure of the internment camps.

World War II, also known as the Second World War, was a global conflict that took place from 1939 to 1945. It involved many countries from around the world, divided into two major alliances: the Allies and the Axis powers. The war was primarily fought between the Allies, consisting of countries such as the United States, United Kingdom, Soviet Union, and China, and the Axis powers, including Germany, Italy, and Japan.

World War II was a continuation of tensions and unresolved issues from World War I, including territorial disputes, nationalism, and ideological conflicts. The war began with Germany's invasion of Poland in 1939, leading to the subsequent invasion of other European countries. The conflict escalated with Japan's attack on Pearl Harbor in 1941, prompting the United States to enter the war.

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Isotopes are different forms from the same element, they have the same number of protons but differ in the number of neutrons in their nuclei, this makes them have different atomic mass, altough their chemical properties remain the same.

Helium contains 2 protons, 2 electrons, and 2 neutrons.

Of the listed options, only c. has a different number of neutrons than the described atom. So this option represents an Isotope of Helium.

An annual wildflower that colonizes disturbed organisms depends most on high rates of dispersal and migration for the survival of its population.

An organism is an animal or plant, specifically one that is so small that you cannot see it without the use of a microscope. not all chemical compounds normally present in residing organisms are innocent.

An organism refers to a dwelling element that has a prepared shape, can react to stimuli, reproduce, develop, adapt, and hold homeostasis. An organism might, consequently, be any animal, plant, fungus, protist, bacterium, or archaeon on the earth.

An organism is a residing being that has a cellular structure and that could independently carry out all physiologic functions vital for lifestyles. In multicellular organisms, such as humans, all cells, tissues, organs, and organ systems of the body paintings collectively to preserve the existence and health of the organism.

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Step 1.

Write down the experiment data.

- tube containing water;

- alodea (photosynthetic organism);

- 10 g of sodium bicarbonate;

- light source.

Step 2.

Why bubbles are formed on the leaves of the alodea?

The experiment have all the condictions for photosynthesis, since it provides: water (that is in the tube), CO2 (because of the dissolved sodium bicarbonate), light (because of the string light source). Therefore the most ogical explanation for Alice experiment results is: the bubbles formed as the elodea plant releases oxygen from the elodea leaves, that because with all the elements in the experiment the plant can do a normal photosynthetic process that way realing oxygen in the tube and forming bubbles of "air".

Answer:

Explanation:

I hope this is what your looking for but I hope it helps in a way!!!!

Answer:

D. presence of gastrin

Explanation:

correct

Answer:

DNA

Explanation:

DNA is the genetic gode used to determine all inherited traits

Hormones secreted from the anterior pituitary gland influence several endocrine glands in the body, including the thyroid gland, adrenal gland, gonads (testes in males and ovaries in females), and mammary glands

The anterior pituitary gland is often referred to as the "master gland" because it secretes several hormones that control the functions of other endocrine glands in the body. The hormones released by the anterior pituitary gland are regulated by hypothalamic releasing hormones, which are released by the hypothalamus and transported to the anterior pituitary gland via the hypophyseal portal system.

The hormones secreted by the anterior pituitary gland include:

The hormones released by the anterior pituitary gland play a crucial role in maintaining the balance of hormones in the body, and any abnormalities in the secretion of these hormones can result in a variety of disorders and diseases.

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Answer:

Charles Darwin

Explanation:

Answer:

echidnas

Explanation:

The 2 practical are :

Figuring out a food's nutritional worth. Understanding food sensitivities might serve as another illustration.

Drug development, food safety testing, environmental monitoring, and disease diagnosis all depend on the analysis of biomolecules.

Because they enable organisms to grow, endure, and reproduce, biomolecules are necessary for life. By interacting with one another, they play a role in the development of organisms, from simple cells to complex living things like people. Their varied shapes and structures enable a variety of functions.

Cells and organisms may malfunction as a result of any changes in the concentration of particular biomolecules. To ensure the health of the cells and live creature, it is essential to measure and monitor the concentration of specific biomolecules in a living system accurately.

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The study of the interactions among organisms and between organisms and their abiotic environment that live and interact together within an area at the same time is called ecosystem ecology.

Ecosystem ecology focuses on understanding the relationships between living organisms (biotic factors) and their non-living surroundings (abiotic factors) in a specific geographic area. It examines how organisms interact with each other and with their physical environment, including factors like climate, soil, water, and nutrients. This field of study provides insights into the functioning, dynamics, and sustainability of ecosystems and their components.

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If sperm from one species cannot survive in the reproductive tract of another species, a type of prezygotic isolating mechanism called gametic isolation has occurred.

Gametic isolation is a reproductive barrier that prevents the fusion of gametes, or sex cells, from different species. This ultimately prevents the formation of a hybrid zygote, which is crucial for maintaining species boundaries.

Gametic isolation is important in the process of speciation, as it ensures that genetic material is not exchanged between different species, thus preserving their distinct characteristics. In many cases, gametic isolation arises due to biochemical differences between the gametes of the two species, which can include incompatibility of the sperm with the female reproductive environment or inability of the sperm to recognize and bind to the egg.

In summary, gametic isolation is a prezygotic reproductive barrier that prevents the mixing of genetic material from different species, thereby maintaining the distinctiveness of each species. This occurs when sperm from one species cannot survive or function properly in the reproductive tract of another species, thus preventing fertilization and formation of a hybrid zygote.

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Answer:

Oxygen dey need to breathe

Explanation:

oxygen because all the other answer can kill them

A penny is at rest is experiencing  inertia because it is not moving.

According to Newton's first law of motion, every object at rest or uniform motion in a straight line will continue in that state unless it is acted upon by an external force. This law is also called law of inertia.

Inertia depends on mass because the more massive an object is, the more reluctant it will be to move.

Thus, a penny is at rest is experiencing  inertia because it is not moving.

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The advantages of using a restriction enzyme whose recognition site is relatively rare are that it will produce large fragments and is useful for isolating intact genes or centromeres.

You would use such enzymes when you need to analyze large genomic regions or preserve the integrity of specific genes during DNA manipulation.
1. A restriction enzyme with a rare recognition site will cut DNA less frequently.
2. This results in larger DNA fragments being produced.
3. These large fragments are beneficial when isolating intact genes or centromeres, as they preserve their structure and function.
4. Use such enzymes when you need to analyze large genomic regions or maintain the integrity of specific genes during DNA manipulation.

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Answer: D. Pre-Industrial

Explanation: Please mark as brainliest, thank you!! And I think that's Accellus?

Answer: a, cellulose

Explanation: There is cellulose based sap

Answer:

it's known as endothermic reaction

We can expect 20 plants to be dwarf and 60 plants to be tall in offspring of this cross.

The presence of two different alleles at a particular gene locus is called heterozygous.

We use Punnett square to determine  possible genotypes and phenotypes of the offspring. Let "T" represent the dominant tall allele and "t" represent the recessive dwarf allele. Since both the parents are heterozygous (Tt), we represent their genotypes as:

 T   t

T| TT |Tt|

t| Tt | tt |

From Punnett square, we can see that there are two possible ways for dwarf plant to be produced, both of which involve parents contributing recessive t allele. These are Tt x Tt and Tt x tt crosses. Each of these crosses has a probability of 1/4 (or 25%) of producing dwarf offspring.

As given 80 offspring, we can expect approximately 1/4 of them to be dwarf plants. Therefore, number of dwarf plants expected is:

80 x 1/4 = 20.

Similarly, we can expect approximately 3/4 of offspring to be tall plants Therefore,  number of tall plants expected is: 80 x 3/4 = 60.

So, we can expect 20 plants to be dwarf and 60 plants to be tall in the offspring of this cross.

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Pairs of homologous chromosomes separate during Anaphase I of meiosis.

Pairs of homologous chromosomes separate during Anaphase I of meiosis. This is a crucial step in the process of meiosis, specifically in meiosis I.

During Anaphase I, the homologous chromosomes, which consist of one chromosome from each parent, separate and move to opposite poles of the cell.

This separation allows for the independent assortment of genetic material and contributes to genetic diversity in sexually reproducing organisms.

As a result of this separation, each daughter cell receives one member of each pair of homologous chromosomes, which is essential for the subsequent formation of haploid gametes.

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Answer:

First off, grab a simple magnet and hold it near your precious metal coin. If the coin is even slightly attracted to the magnet, then you know you have a fake on your hand, as metals with contents of iron and steel are the most likely to be attracted

A magnet will tell the difference if the coin is fake or not because is a coin is real it will stick and be magnetised to the magnet. If the coin is fake it will not stick, it will not magnetise, it means thay its fake.

Answer:

a) Setting up control and experimental groups that can be compared.

Explanation:

Planning experimental methods includes setting up control and experimental groups that can be compared. Scientists study and try an idea by doing an experiment. It is a way to look into the link between a cause and an effect and to find patterns and relationships between factors. Experimental procedures are the process of making a design for how to do an experiment so that the results are accurate and reliable.

A control group is a group of people who are part of a study but don't experience the chance variable. The main job of a control group is to give the study group, which gets the independent variable, something to compare itself to.

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The chemical components inside the virus

Arthritis or rheumatoid arthritis is a prevalent condition among the elderly.

The knee is one of the largest and most intricate joints in the body. The knee is the joint that links the femur (thigh bone) to the shin bone (tibia). The smaller bone that runs alongside the tibia (fibula) and the kneecap are the extra bones that make up the knee joint (patella).

Osteoarthritis is the most common kind of arthritis that affects the knee. Osteoarthritis is a degenerative disease in which the cartilage in the joint gradually deteriorates. It primarily affects persons in their forties and fifties. Osteoarthritis may be caused by excess stress on the joint such as repeated injury or being overweight.

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