Give important characteristics of algae

Answer:

The correct answer is "Orthologs are homologs found in the same species".

Explanation:

Orthologs, or orthologous genes, are defined as genes found in different species that evolved from a common ancestry. Therefore, It is false to affirm that orthologs are homologs found in the same species. Orthologous genes have the same function and often share common nucleotide sequences, however, they must be found in different species to be considered orthologs.

Explanation:

RNA growth is always in the 5′ → 3′ direction: in other words, nucleotides are always added at a 3′ growing tip, . Because of the ANTIPARALLEL nature of the nucleotide pairing, the fact that RNA is synthesized 5′ → 3′ means that the template strand must be oriented 3′ → 5′.

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The two blood vessels involved in the circulation of blood shown in the diagram are the pulmonary vein (VI) and the pulmonary artery (VII). The pulmonary vein carries oxygenated blood from the lungs to the heart, while the pulmonary artery carries deoxygenated blood from the heart to the lungs.

The parts labelled in the diagram are as follows: I- Superior vena cava, II- Right atrium, III- Tricuspid valve, IV- Right ventricle, V- Pulmonary valve, VI- Pulmonary vein, VII- Pulmonary artery, VIII- Left atrium.
Two features that show that the structures are possessed by humans are the presence of four-chambered hearts and the existence of a closed circulatory system. The four-chambered heart in humans allows for efficient separation of oxygenated and deoxygenated blood, ensuring that oxygenated blood is supplied to the body's tissues. The closed circulatory system in humans ensures that blood is transported within blood vessels, preventing blood from coming into direct contact with other body tissues and organs. This system allows for the efficient transport of oxygen and nutrients to the body's tissues, while also removing waste products such as carbon dioxide. These features are critical for the survival of humans, as they ensure that oxygenated blood is supplied to all body tissues, promoting overall health and well-being.

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The geometric shape that will best model the cells would be a flat round disc.

The image is that of a structure containing many cells that are similar in appearance, most likely a tissue.

Each cell can be seen to be somewhat round in shape, typical of many animal cells.

Thus, in order to model such cells, flat round discs will be ideal. Using any other shape will be totally out of place.

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Credibility appeals are based on perceived competence, expertise, or accomplishments. Ethos is a good example: Ethos is about establishing your authority to speak on the subject and giving credibility.

Answer:

Credibility appeals are based on perceived competence, expertise, or accomplishments. Ethos is a good example: Ethos is about establishing your authority to speak on the subject and giving credibility.

Explanation:

The other person was correct!!!

The sperm of an angiosperm reach the egg via the pollen tube that grows from the pollen grain through the carpel tissues to the ovule.

Hence, the correct answer is option B.

Pollen is a fine powder that seed plants produce. Pollen grains (extremely reduced microgametophytes), which create male gametes, make up this substance (sperm cells). In the process of moving from the stamens to the pistil of flowering plants or from the male cone to the female cone of gymnosperms, gametophytes in pollen grains are shielded by a tough coating comprised of sporopollenin.

When pollen touches a pistil or female cone that is compatible with it, it germinates and creates a pollen tube that carries the sperm to the ovule that houses the female gametophyte. Pollen grains are so tiny that they must be magnified to be seen in detail. Paleoecology, palaeontology, archaeology, and forensics all benefit greatly from the study of pollen, which is known as palynology.

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Answer:

The process of science refers to the practices employed in science to uncover knowledge and interpret the meaning of those discoveries.

Homologous chromosomes separate during meiosis Sister chromatids separate during a second round, called meiosis II. Since cell division occurs twice during meiosis, one starting cell can produce four gametes (eggs or sperm).

Chromosomes in a couple commonly one inherited from the mom and one from the father is known as a homologous chromosome. The homologous chromosome is of the identical length, centromere function, and staining pattern. throughout fertilization, there may be a pairing of chromosomes inside the mobile.

Homologous chromosomes are matched pairs containing the identical genes in same locations alongside their duration. Diploid organisms inherit one replica of each homologous chromosome from every determine; all collectively, they are taken into consideration a full set of chromosomes.

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Adding or removing phosphate groups from ATP causes significant energy release, which can be used by cells to power various metabolic processes, option C, significant energy release.

Phosphate groups are chemical groups consisting of a phosphorus atom bonded to four oxygen atoms. They are a key component of many important biomolecules, including adenosine triphosphate (ATP), DNA, and RNA.

Changing the number of phosphate groups on ATP molecules can result in significant energy release, as the addition or removal of a phosphate group causes a change in the molecule's energy content. This energy release can then be used for various cellular processes, such as muscle contraction or metabolic reactions.

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After doing the research, the correct answer was found to be, which is mentioned below.

These are preserved remains of the plants and the animals whose bodies were buried deep inside the earths surface or either sediment.It takes millions and trillions of years to form fossils. Their age can be determined by carbon dating.

The correct options are given below, and the completed table is attached below.

Organism 1- Brachiopoda- Fossil D- They both look alike

Organism 2- Mollusca, Gastropoda-Fossil A

Organism 3- Arthropoda, Trilobita- Fossil C

Organism 4- Chordata, Actinopterygii -None

Organism 5- Pteridophyta- Fossil B- As it is in the plant kingdom and it is flowerless

Organism 6- Nematoda- None

Organism 7- Ascomycota-None

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The question is incomplete, but most probably the complete question is,

The following chart lists taxonomy classifications for seven organisms. Some have just one classification, while others have a subclassification. Which four classifications best match the classifications of your fossils? Research the classifications if you don’t know their characteristics.

Classification

Organism 1 Brachiopoda

Organism 2 Mollusca, Gastropoda

Organism 3 Arthropoda, Trilobite

Organism 4 Chordata, Actinopterygii

Organism 5 Pteridophyta

Organism 6 Nematoda

Organism 7 Ascomycota

Now complete the following table to explain your reasoning for the classification of your fossils.

A tiny electric message moves through a long part of a brain cell called the axon. When a message goes to the end of a nerve, it sends chemicals called neurotransmitters. These substances move through a tiny gap and attach to special parts of another nerve cell's outer covering.

Messages called impulses are sent from one nerve cell to another through a connection called a synapse. This process is called synaptic transmission. Synapses are connections between nerve cells or between nerve cells and other cells, like muscles or glands.

The neuron sending the signal is called the presynaptic neuron. When a signal travels down a nerve cell, it causes little sacs called vesicles to release chemicals called neurotransmitters.

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From all the options given, the one that has the greatest resistance are endospores. Endospores have several outer coats that protect them from dessication, temperature changes, and even from UV radiation. Endospores are the response to environmental hostility, therefore when a bacteria senses abiotic adversity it starts to deploy the mechanisms to create an endospore, which is the resistant form of the microbe. Fungi, and the other bacterias mentioned are capable of developing spores, but these organisms themselves are more vulnerable than a endospore.

EXPLANATION/ANSWER:

Biotic factors: things that are living

• grass

• impala

• ticks

• seed-eating bird

• locust

• scorpion

• hawk

• tick bird

• snake

• baboon

• leopard

• hyena

Abiotic factors: things that are non-living that affect the living

• soil

• sunlight

• temperature

• water

Answer:

C

Explanation:

Answer:

The answer is c good luck

Answer:

В.

Photosynthesis is the process of trapping the energy of glucose. Cellular respiration is the process of releasing the energy stored in the bonds of the cell.

Differences in the physical traits of organisms is a(n) Variation.

In biology, variation is the difference in cells, individual organisms or characters or physical traits among individuals of any species caused by either genetic makeup or an effect of environmental factors. Physical traits are those distinguishable characteristics found in organisms.

Genetic variations can emerge from variant genes known as mutations or processes where genes are rearranged as cells are getting ready to divide which is called genetic recombination. When gene activities are altered by variation, they can introduce different physical traits in organisms.

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Answer:

C and D

Found the answer from an old quizziz I had

Answer:

mutualism

Explanation:

they both benefit from each other or both mutually help each other

Answer:

The National Research Act of 1974 set the stage for several important systems of checks and balances in clinical research. It led to the creation of the National Commission for the Protection of Human Subjects of Biomedical and Behavioral Research, as well as the Belmont Report and Institutional Review Boards (IRBs).

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Similarities: both salt marshes and mangrove swamps are areas dominated by plants and close to the coast. They both can tolerate periodic floods of salt water and are referred as coastal wetlands, being influenced by tide.

Differences: marshes are dominated by low shrubby or herbaceous vegetation, while mangroves are dominated by trees. Salt marshes can be found in colder coastlines, but mangroves don't because it suffers damage from freeze events.

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The two main issues that need to be balanced in human skin adaptations are the need for protection against harmful environmental factors (such as UV radiation, extreme temperatures, and injuries) and the need for efficient thermoregulation (maintaining a stable body temperature). The skin has evolved to perform both of these functions through various adaptations, such as the production of melanin to absorb UV radiation, the ability to sweat to cool the body, and the development of insulation in colder environments.

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Protection from harmful environmental factors (such as UV radiation, extreme temperatures, and injuries) and effective thermoregulation are the two primary concerns that need to be managed in human skin adaptations. (maintaining a stable body temperature). Through a variety of adaptations, including the production of melanin to absorb UV rays, the capacity to perspire to cool the body, and the creation of insulation in colder environments, the skin has evolved to accomplish both of these tasks.

Logs burning in a campfire are the circumstances that most mimic cellular respiration. This is due to the fact that both processes release energy and depend on oxygen to continue. The body uses cellular respiration, a series of metabolic events, to liberate energy from food.

This is the process of breathing; the taking in and exhaling of air. Biology. the whole of the physical and chemical mechanisms that transport oxygen to tissues and cells and release carbon dioxide and water during oxidation in an organism.

It is absolutely necessary for an organism to preserve its life for a process known as metabolism to take place in its body. These activities, which include anabolism and catabolism, are also known as metabolic processes.

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Answer:

Here are four traits that would make it hard for a vaccine to be used:

1. Rapid mutation rate. If a pathogen mutates rapidly, it will be able to evade the immune system's defenses, including the antibodies produced by a vaccine. This is a particular problem with viruses, which can mutate very quickly.

2. Ability to evade the immune system. Some pathogens are able to evade the immune system by hiding inside cells or by changing their surface proteins so that they are no longer recognized by the immune system. This makes it difficult for the immune system to mount an effective response to the infection.

3. Ability to spread easily. If a pathogen is easily spread from person to person, it will be more difficult to prevent infection through vaccination. This is a particular problem with respiratory viruses, which can be spread through coughing and sneezing.

4. Lack of animal reservoirs. If a pathogen does not have animal reservoirs, it will be more difficult to develop a vaccine against it. This is because vaccines are typically developed using weakened or killed versions of the pathogen. If there are no animal reservoirs, there will be no source of the pathogen to use for vaccine development.

It is important to note that these are just a few of the traits that can make it difficult to develop a vaccine against a pathogen. There are many other factors that can contribute to the difficulty of vaccine development, such as the cost of vaccine development, the availability of funding, and the political will to support vaccine development.

Yes, it is possible to see the nucleus of these epidermal tissue cells, as the nucleus is located in the central part as a darker point.

Cells can be flat, cubic and cylindrical. Simple squamous (squamous) epithelium - a single layer of thin, flattened cells. This type of epithelium forms thin, delicate layers of cells through which molecules can pass easily (by diffusion or filtration).

Tubular epithelial cells, which are the cells found in the kidney tubules and may appear from time to time in the urine, however due to kidney problems they may appear in the urine in the form of cylinders, which should be indicated in the test result.

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Answer:

dogs

Explanation:

Answer:

a. Populations tend to overpopulate

Explanation:

From punnett squares, we can get genotypic and phenotypic ratios  and probabilities among the progenies. Cross 1: genotypic ratio 1:2:1. Phenotypic ratio 3:1. Cross 2: 75% probability of having a white horn.

The Punnett square is a graphic representation that shows the different types of gamete combinations according to the alleles involved in a cross.

Punnett square shows the probabilities of getting offspring with different genotypes and their consequent phenotypes.

Cross 1:

Parentals) Ee   x   Ee

Gametes) E   e    E   e

Punnett square)   E     e

                      E    EE    Ee

                       e    Ee    ee

F1) Genotype

25% = 1/4 of the progeny is expected to be homozygous dominant EE

50% = 2/4 of the progeny is expected to be heterozygous, Ee

25% = 1/4 of the progeny is expected to be homozygous recessive, ee

    Phenotype

Genotypic ratio ⇒ 1:2:1 ⇒ 1/4 EE : 2/4 Ee : 1/4 ee

Phenotypic ratio ⇒ 3:1 ⇒ 3/4 one eye : 1/4 two eyes

Cross 2:

Parentals) Ww   x   Ww

Gametes) W   w    W   w

Punnett square)   W    w

                      W   WW   Ww

                       w   Ww   ww

F1) Genotype

25% = 1/4 of the progeny is expected to be homozygous dominant WW

50% = 2/4 of the progeny is expected to be heterozygous, Ww

25% = 1/4 of the progeny is expected to be homozygous recessive, ww

    Phenotype

Genotypic ratio ⇒ 1:2:1 ⇒ 1/4 WW : 2/4 Ww : 1/4 ww

Phenotypic ratio ⇒ 3:1 ⇒ 3/4 white horn : 1/4 brown horn

Offspring has 75% probability of having a white horn.

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One difference between cancer cells and normal cells is that cancer cells continue to divide even when they are tightly packed together.

A general term for conditions characterized by uncontrolled cell growth is cancer. Because of their altered perception of commonly used cellular signals, typically caused by genetic mutations to common signal receptors, cancer cells frequently have the ability to grow with little or no control.

Cancer cells, in contrast to normal cells that function normally, are not actually affected by inhibition based on density, which means that they continue to divide even when they are packed together tightly. In ordinary, working cells, they can't keep separating when they are stuffed firmly together by a cycle known as thickness subordinate hindrance, by which the tight bundle of cells paracrine signs to be conveyed to hinder cell development factors. This cycle is started to restrict contest for supplements and potential tissue harm coming about because of the choking of cells in too close a region. Cancer cells do not respond to these limiting markers, so even in restricted areas, they grow unabated.

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