Identify a specific structure in a single celled organism. State how that structure is involved in the survival of the organism

I think is D 2 dimensional coordinate point I’m not sure though

Answer:

Option D

(6, -3) is an example of a 2-dimensional coordinate point

Explanation:

In a two dimensional plane, every point is referenced with two coordinates, that is, an x-coordinate and a y-coordinate as follows: (x-coordinate, y-coordinate); in this case, the x-coordinate is 6 and the y-coordinate is -3.

The answer is False

True or false,  

photographs are rarely taken at the scene where bones are found

the answer is  False

Answer: Ammonification and nitrogen fixation.

Explanation:

Ammonification is the process where by organic nitrogen is converted ammonia in the soil by bacteria. These occur when bacteria breakdown the remains of dead plants and animals to release organic nitrogen and it is converted to ammonia.

Nitrogen fixation it is the process where atmospheric nitrogen is converted to ammonia or nitrate in the soil, in a way it is absorbed by plants. It is fixed by bacteria in root nodules of leguminous plants or by lightening.

They can disguise themselves throughout many nations. More commonly in Australia, Europe, and the North and South America! Hopes this helps!

The answer is C. The genotype of individual #4 is "Aa" and individual #6 is "aa"

Answer:

is an electrically excitable cell that takes up, processes and transmits information through electrical and chemical signals.

Explanation:

They are bacteria/single-celled organisms.

Answer:

Np

Explanation:

They have a plasma membrane and cytoplasm

The right option is (D) Light has no effect on growth

The graph shows the relation between growth and time period of the seed in the presence of sunlight. As we can see that there is no significant change on the growth in the presence of sunlight. So we can say that light has no effect on the growth of this seed

1) could improve the delivery of oxygen to the muscles

Because such blood cells carry oxygen from the lungs to the muscles, a higher concentration in the blood can improve an athlete’s aerobic capacity and endurance.

Blood doping can enhance the delivery of oxygen and nutrients to cells and encourage the healing of muscles, potentially improving athletic performance. However, it is illegal and can have serious health consequences.

An athlete might believe that there is a benefit to blood doping with red blood cells for several reasons. Firstly, blood doping could improve the delivery of oxygen to the muscles. This is due to the main function of red blood cells (RBCs) which have a protein called hemoglobin, capable of carrying up to a billion molecules of oxygen per cell. This oxygen can then be used by muscles for aerobic respiration, enhancing the athlete's performance.

Secondly, blood doping could potentially help deliver necessary nutrient molecules to the cells. The additional RBCs will carry not only oxygen, but also other nutrient molecules needed for cell functioning. However, it's important to note that this practice is considered illegal in virtually all sports.

Finally, substances like erythropoietin (EPO) and human growth hormone (hGH) can be used as part of a blood doping strategy, as they stimulate the production of RBCs and promote the healing of muscles respectively. However, misuse can result in severe health consequences including infections and even death.

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cell division to create two daughter cells

some cyano bacteria  carry out the convertion of gasious nitrogen to biological useful form of nitrogen .

Answer:  The correct answer is:  

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                    " nitrogen-fixing " .

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      " Nitrogen-fixing bacteria carry out the conversion of [gaseous nitrogen] to [biologically useful form of nitrogen.]. "

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Hope this helps!

    Best wishes to you in your academic endeavors

             — and within the "Brainly" community!

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Ebola virus disease is a rare and deadly diseases in people and nonhuman primates.

Answer:

The most appropriate option would be: The island will suffer a loss of native plant and animal species

Explanation:

A hurricane is a calamity that manifests itself in the form of great rain fall, strong winds and thunderstorm.

Hurricanes just like all other natural calamities cause a lot of destruction to the organisms living in an area, their habitats and become a source of introduction of certain invasive species.

If a Hurricance hits a small island in the Caribbean, there are a lot of chances that Island will lose a large amount of animals and plant species. The fact is that when a hurricane hits and goes, many not all specie re-emerge eco-system establishes due to process of succession. However, there are some native plant and animal specie that are native to a specific place like that Island, so there are more chances that after that large hurricane  island will suffer a loss of native plant and animal species.

The climate of the Island will not be in a position to sustain the survival of all living organisms, therefore, some may starve and perish for always although some may recover too. Therefore, Option D seems best.

Hope it helps!

Answer:

Mitochondrial DNA typing is a method used by forensic scientists which match the DNA of unknown sample to the sample collected from the crime scene.

This typing method posses several advantages over other nuclear DNA typing methods in forensic science as:

Thus, mitochondrial DNA typing has several advantages in forensic science.

Mitochondrial DNA (mtDNA) typing is a valuable tool used in forensic science for identifying  individuals and establishing maternal relationships.

Unlike nuclear DNA, which is inherited from both parents and is unique to each individual (except for identical twins), mtDNA is inherited solely from the mother and is passed down unchanged from generation to generation. This unique inheritance pattern makes mtDNA analysis particularly useful in certain forensic scenarios.

In cases where human remains are found and conventional methods of identification, such as fingerprinting or dental records, are not feasible, mtDNA analysis can be used to identify the deceased.

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what was the strand form #5

The major evidence that the evolution is still ongoing is mutations that occur. Those changes at gene level happen by chance during the process of copying DNA and change through the populations over time. Individuals who reproduced can pass that mutation to their offspring. When carriers with a specific mutation are better able to survive and reproduce, natural selection will favor them. That is the way of new variant to be passed down and spread through the population.

The scenario described is most likely a result of massive volcanic eruptions that expel aerosols into the atmosphere, blocking sunlight and causing a drop in global temperatures, as demonstrated by the 1991 eruption of Mt. Pinatubo.

The hypothetical scenario described where a huge volume of suspended particles in the atmosphere lead to a blocking of sunlight, reduction in solar radiation, drop in mean global temperatures, and some life forms becoming extinct, could be the result of massive volcanic eruptions. Volcanic eruptions can eject aerosols, such as sulfate particles, into the atmosphere which reflect sunlight and reduce the amount reaching Earth's surface. This has been observed in past events like the eruption of Mt. Pinatubo in 1991, which directly led to a decrease in global temperatures. While decreased solar activity has been considered, there is no conclusive model that connects it to cooler temperatures on Earth. In contrast, the role of aerosols from volcanic eruptions in cooling the planet is well-documented.

the chances that a cross between a black chicken and white chicken will result in blue offspring  is 100%,  because Back and white are both incomplete dominant traits, 100% of the offspring will be heterozygous blue.

Traits are the attributes of an organism  which are influenced by the environment and expressed by genes, the Physical features of an organism, such as hair color, leaf form, size, behavioral characteristics,

They have specific traits which  allow them to be successful in the ecosystem, these are physical characteristics which include fin length, body shape, color patterns, eyesight, and muscle definition.

Species with substantial variation in traits For example, white-tailed deer in Pennsylvania have seed coat color with limited variation, all the organism have characteristics are genetic traits or behavioral traits.

Genetic Traits can be defined as the genes that one gets from both parents influence, the  Individual and independent traits are defined by genes, which are encoded by unique portions of our DNA.

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When crossing a black chicken with a white chicken, 50% of the offspring are expected to be blue due to incomplete dominance. This is known as Andalusian Blue pattern in genetics.

When a black chicken is crossed with a white chicken, the resulting offspring may exhibit an intermediate phenotype called blue or Andalusian Blue. This occurs due to incomplete dominance, where neither black nor white alleles completely dominate. In this case, the expected outcome is:

Therefore, the correct answer to the question about the chances of getting blue offspring is c) 50%.

This exemplifies how genetics in chickens can lead to mixed characteristics due to blending inheritance.

25) D hypertonic

23) active transport

Those are the ones I know (sorry I couldn't help with the other ones... I'm studying for my exam) ^-^

The human body is made up of trillions of cells. Cells of the nervous system, called nerve cells or neurons, are specialized to carry "messages" through an electrochemical process. The human brain has approximately 86 billion neurons. To learn how neurons carry messages, read about the action potential.

Neurons come in many different shapes and sizes. Some of the smallest neurons have cell bodies that are only 4 microns wide. Some of the biggest neurons have cell bodies that are 100 microns wide. (Remember that 1 micron is equal to one thousandth of a millimeter!).

Neurons are similar to other cells in the body because:

Neurons are surrounded by a cell membrane.

Neurons have a nucleus that contains genes.

Neurons contain cytoplasm, mitochondria and other organelles.

Neurons carry out basic cellular processes such as protein synthesis and energy production.

However, neurons differ from other cells in the body because:

Neurons have specialize cell parts called dendrites and axons. Dendrites bring electrical signals to the cell body and axons take information away from the cell body.

Neurons communicate with each other through an electrochemical process.

Neurons contain some specialized structures (for example, synapses) and chemicals (for example, neurotransmitters).

The Neuron

neuron

One way to classify neurons is by the number of extensions that extend from the neuron's cell body (soma).

bipolar neuron

Bipolar neurons have two processes extending from the cell body (examples: retinal cells, olfactory epithelium cells).

Pseudounipolar cells (example: dorsal root ganglion cells). Actually, these cells have 2 axons rather than an axon and dendrite. One axon extends centrally toward the spinal cord, the other axon extends toward the skin or muscle.

Multipolar neurons have many processes that extend from the cell body. However, each neuron has only one axon (examples: spinal motor neurons, pyramidal neurons, Purkinje cells).

Neurons can also be classified by the direction that they send information.

Sensory (or afferent) neurons: send information from sensory receptors (e.g., in skin, eyes, nose, tongue, ears) TOWARD the central nervous system.

Motor (or efferent) neurons: send information AWAY from the central nervous system to muscles or glands.

Interneurons: send information between sensory neurons and motor neurons. Most interneurons are located in the central nervous system.

Check out the Gallery of Neurons to see some pictures of real neurons or "Sidewalk Cells" to see photographs of neurons on the street.

Hear It

"Neuron" | "Axon" | "Dendrite" |

"Nissl" | "Mitochondria" | "Endoplasmic reticulum"

There are several differences between axons and dendrites:

When a population reaches its carrying capacity, it has hit the maximum population size that the environment can sustain, causing growth to slow or stop.

At carrying capacity, population growth slows down significantly or stops, due to limitations in resources such as food, space, and other necessities. If a population grows beyond its carrying capacity, resources become overused and the environment cannot support the increased numbers, which typically leads to an increase in death rates and decrease in birth rates until the population size reduces to or fluctuates around the carrying capacity.

In environments with unlimited resources, populations might exhibit exponential growth, but this cannot continue indefinitely in a real-world setting. When resources start to become scarce, the growth follows a logistic growth curve, creating an S-shaped curve as the population growth rate levels off at the carrying capacity. If the population overshoots its carrying capacity, it may experience a population decline until it stabilizes around the carrying capacity again.

Directional selection is a mode of natural selection an extreme phenotype is favored over other phenotypes this causes the allele to shift over time in the direction of the favored phenotype

Directional selection is a mode of natural selection in which an extreme phenotype is favored over other phenotypes, causing the allele frequency to shift over time in the direction of the favored phenotype.

Phenotype: The observable physical characteristics of an organism.

Genotype: The genetic makeup of an organism.

Allele: A variant of a gene.

Allele frequency: The proportion of a population that has a particular allele.

In directional selection, there is a selective pressure for one extreme phenotype over the other phenotypes. This could be due to a change in the environment, such as a change in climate, or it could be due to a new mutation that gives the organism an advantage.

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The nuclear envelope, also known as the nuclear membrane, [a] is made up of two lipid bilayer membranes which in eukaryotic cells surrounds the nucleus, which encases the genetic material. The nuclear envelope consists of two lipid bilayer membranes, an inner nuclear membrane, and an outer nuclear membrane. The space between the membranes is called the perinuclear space.

I think the answer is A

Answer:

D

Explanation:

A scatter plot, unlike a line graph which is connected by joining various dots to form the line, and hence to be able to gather the information by studying the pattern of line, is different in this sense.

One needs to study two different sets of Data in a scatter graph. The word scatter itself inclines us to the idea of knowing that all the information in this plot will not be found in one place like in the line graph. One has to compare information derived from data collection to another data collection in a scatter plot.

Note: Both have the Y and The X axis.

We have been given that different tissue samples are in their respective stage  of cell cycle.

Ans is option B because cancerous cells tend to divide indefinitely regardless of the presence or absence of growth factors. In cancerous cells G0 check points fail and the cells are always in some stage of mitosis i.e. cell is supposed to be in any of the following stages of mitosis :

1) Prophase

2) Metaphase

3) Anaphase

4) Telophase

D) Samples A & C indicate cancer due to the large proportion of cells in some stage of mitosis compared to the cells in interphase.  

Sample: Number of Cells in Interphase Number of Cells in Prophase Number of Cells in Metaphase Number of Cells in Anaphase Number of Cells in Telophase

Sample A 6 15 4 7 8

Sample B 25 4 2 3 1

Sample C 4 9 5 3 6

Photosynthesis occurs in the chloroplast, with the first stage, the light-dependent reactions, happening in the thylakoid membrane, and the second stage, the Calvin cycle, happening in the stroma. The thylakoid membrane is where sunlight is converted into ATP and NADPH, while the stroma is where these compounds are used to make GA3P from CO₂.

Photosynthesis, the process of converting sunlight into chemical energy, takes place in the chloroplast, an organelle found in plant and algal cells. The process involves two main stages, both occurring in different parts of the chloroplast.

The first stage, the light-dependent reactions, take place in the thylakoid membrane. These reactions use the energy from sunlight to produce ATP and NADPH. The thylakoid membrane is a highly dynamic collection of folded membrane sacs. It's where the green photosynthetic pigment, chlorophyll, is found.

The second stage is the Calvin cycle, which occurs in the stroma of the chloroplast. The stroma is a gel-like fluid inside the chloroplast where the energy derived from ATP and NADPH is used to synthesize GA3P from CO₂.

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Where is the image...?

In biology, diffusion is the movement of substances with the concentration gradient, which means they move from an area of high concentration to an area of low concentration. Facilitated diffusion is diffusion that is performed with the help of a carrier protein that can move particles of the substance.

Answer:

When the molecules size are large, and they are insoluble in lipids, at this time facilitated diffusion is necessary to transport such molecules across the plasma membrane.

Explanation:

Facilitated diffusion is one type of passive transport. It occurs from higher concentration to lower concentration. This diffusion depends on the size of the particle, the solubility of the membrane. The smaller size particles can move faster across the membrane but the bigger particles can't pass the plasma membrane. Another fact is the entire plasma membrane is made up of lipids. It can't allow the lipid insoluble particles to the membrane. For this, there is a special facility to carry such polar molecules like water, such as channels, carrier proteins, porins. These channels facilitate the bigger polar molecules to enter into the membrane and cross the membrane. The enzymes like permease act as channel proteins that bind with the bigger particles and carry them through the channels. This type of diffusion also needs ATP like passive diffusion.