Brainstem strokes are not uncommon and arise when arterial flow is compromised to one or more of the areas in the brainstem. What important structures arise out of the brainstem

Answer:

Viruses are not alive

Explanation:

Viruses are acellular structures capable of performing some biological functions.

Viruses are parasitic structures made of an outer protein capsid and genetic material which are able to replicate in a living cell and thus cause infection in the cell.

Viruses hijack the replicative machinery of the host to produce copies of its own genetic material. A single infected cell is capable of producing thousands of viruses.

The virus only injects the nucleic acid inside the target cell, the envelope and capsid are left outside. The hijacked genetic machinery of the host produces further copies of the nucleic acid, capsid and envelope.

These structures are assembled to give rise to new viruses.

If a large number of viruses are synthesized rapidly, it results in cell lysis. This type of infection is called the lytic cycle.

If the virus genome incorporates with the host genome, it is present there silently and being replicated. Upon receiving an activation signal lytic cycle is activated. It is called the lysogenic cycle

Therefore, viruses are acellular structures capable of performing some biological functions.

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Mature erythrocytes lack a nucleus and other organelles, while platelets are only pieces of cells.

The many types of formed elements that make up the nonfluid fraction of blood are so named because they were all created from the same stem cells that may be found in bone marrow. Approximately 45% of the volume of whole blood is made up of blood cells and platelets. The comparatively transient erythrocytes, leukocytes, and platelets are continuously replaced by the blood's created components through the process of hemopoiesis. Hemopoietic stem cells that develop into myeloid and lymphoid lineages kick off hemopoiesis in the red bone marrow.

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But this is not very courteous. You can use an introduction statement in place of an imperative. Here are a few typical alternatives to rephrasing an order.

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Human blood cells have a cell membrane, the cell wall is not fully a cell wall as its made up of cellulose.

Answer:

Thermal energy can be transferred by conduction, convection or radiation

Explanation:

Thermal energy is the energy that flows from one point to another due to temperature differences between the points. There are three ways by which thermal energy is transferred which are conduction, convection and radiation.

In conduction, thermal energy is transferred in solids usually metals due to their good heat conductivity. An example is seen in the use of metals for preparing meals. Heat (or thermal energy) is transferred from the fire to the metal to the food.

Convection occurs in fluids (liquids and gases). It usually occurs in a cyclic manner. For example in heating water, thermal energy is gained by water molecules closest to the heat source (at the base of the container) and become lighter causing them to rise to the top. The molecules at the top become denser and sink to the bottom whereby they gain energy and rise in a similar manner. This repeated phenomenon occurs in a cyclic form whereby there's displacement of colder and denser molecules by warmer and lighter molecules. Another example is the occurrence of sea and land breezes.

Radiation occurs without the need of any material medium unlike conduction and convection. In radiation, heat is directly transferred from one point to the other without being transferred by molecules. This is seen in how thermal energy from the sun reaches the earth. In other words, heat is transferred in a vacuum

Answer:

After the water gushed aboard and the boat split into two, there was nothing left that kept the boat afloat. The weight of water and gravity ultimately pulled the large cruiser to its watery doom.

Explanation:

I HOPE THIS HELPS

Answer:

Explanation: The immediate cause of RMS Titanic's demise was a collision with an iceberg that caused the ocean liner to sink on April 14–15, 1912. While the ship could reportedly stay afloat if as many as 4 of its 16 compartments were breached, the impact had affected at least 5 compartments.

Answer:

C

Explanation:

Mined materials are used for different purposes

Mining is the process of removing valuable materials from the Earth's surface, including the oceans, hence option C is correct.

Extraction of useful materials from the ground is known as mining.  A few notable exceptions, a mineral is an inorganic substance found in nature that has a unique chemical composition, physical characteristics, or molecular structure.

Mined materials include coal, gemstones, and iron ore, to name a few. The raw substance used to make iron is called iron ore. Mining has existed since the primordial era.

In essence, it is the procedure used to extract valuable information from large amounts of data or data warehouses.

It is clear that the phrase itself is a little ambiguous. Coal or diamonds are the end product of the extraction process in the instance of mining for coal or diamonds.

Therefore, humans mine materials for different purpose.

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Photosynthesis ceases when leaves wilt, mainly because stomata close, preventing CO2 from entering the leaf.

Photosynthesis is a series of chemical reactions by which plants can produce simple carbohydrates in presence of light.

Photosynthesis requires carbon dioxide and light to produce glucose and release oxygen.

In plants, the interchange of carbon dioxide and oxygen during photosynthesis occurs in specialized structures called stomata.

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Answer: A solution is a mixture in which one substance is dissolved in another. When elements and compounds that are dissolved in water leave a solution, crystallization occurs.

Explanation: Hope this helps! :)

Hey there!

Photosynthesis is part of the carbon cycle.

Plants absorb carbon dioxide & sunlight in the middle of the photosynthesis process and create glucose (a type of sugar).

I hope this helps,

have a wonderful day. :)

Photosynthesis is part of the carbon cycle. Therefore option A is correct.

Photosynthesis is a vital process in the carbon cycle, which is the biogeochemical cycle that describes how carbon is exchanged and recycled between the atmosphere, living organisms, oceans, and the Earth's crust.

During photosynthesis, green plants, algae, and some bacteria convert carbon dioxide (CO2) from the atmosphere into organic compounds, such as glucose, using sunlight as an energy source.

This process removes CO2 from the atmosphere, reducing greenhouse gas levels and helping to regulate the Earth's climate.

It is an essential step in maintaining the balance of carbon in the biosphere and plays a significant role in sustaining life on our planet.

Therefore option A Photosynthesis is correct.

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Answer:

B

Explanation:

the nucleus has all the info and genes and stuff

Evolution is so important because it is the bases of genetics which evolves or changes in biological population over time.

What is evolution?

Evolution is defined as a phenomena when the characteristics of a particular species changes with time over generations to generations and go through the process of natural selection.

Importance of evolution:

1. Evolution is the process from which the formation of the earth can be defined with different theories.

2. Certain environmental and genetic changes can be the reason of evolution from one generation to another.

3.Evolution also make as aware that how different species are interconnected.

4. Biological population mostly evolves due to four main factors like natural selection, genetic drift, gene flow and mutation.

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Answer:

b respiration is breathing, the main goal of aerobic respiration has nothing to do with light energy

The bundle of nerve fibers attached to the brain is called the cranial nerves in the peripheral nervous system. The peripheral nervous system (PNS) is the division of the nervous system that is outside of the brain and spinal cord. It includes all of the nerves that go to and from the brain and spinal cord.

The PNS is made up of two main types of nerves: cranial nerves and spinal nerves.The cranial nerves are a group of twelve pairs of nerves that originate from the brainstem and reach the various parts of the head, neck, and trunk. They are called cranial nerves because they emerge from the brain and not the spinal cord.Each cranial nerve is named according to its function and its number. For example, the first cranial nerve is called the olfactory nerve, which is responsible for the sense of smell.

The second cranial nerve is called the optic nerve, which is responsible for vision. The other ten cranial nerves are responsible for a variety of functions, such as controlling the muscles of the face, regulating the heart rate, and controlling the movement of the eyes.The spinal nerves, on the other hand, are a group of thirty-one pairs of nerves that originate from the spinal cord and extend to the various parts of the body. They are named according to the region of the spinal cord from which they emerge, such as the cervical nerves, thoracic nerves, lumbar nerves, sacral nerves, and coccygeal nerves.

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Answer:

a -  horse

b - cow

c - cat

d - human

i think

Answer:

The number of adenine bases will be equal to the number of thymine bases.

Explanation:

A DNA molecule is a double-stranded molecule made up of nucleotide bases. There are four (4) nucleotide bases that make up the DNA viz: Adenine, Guanine, Cytosine, and Thymine.

According to Chargaff, who postulated the complementary base pairing rule that states that I the DNA molecule, Adenine base always hydrogen bond with Thymine base and Guanine base always hydrogen bond with Cytosine base i.e. A-T, G-C. Chargaff also found out that the amount of Pyrimidines (Cytosine and Thymine) are equal to one another, likewise the Purines(Adenine and Guanine).

According to Chargaff, the number of Adenine base equals the number of Thymine base that it pairs while the same occurs for Guanine and Cytosine pair. All bases total 1. Hence, the forensic scientists can assume that the number of Adenine base in the DNA is the same as the number of Thymine base.

Answer:

The number of adenine bases will be equal to the number of thymine bases.

Explanation:

Edge 2020, mark as brailiest please

The digestive systems of plants and animals are quite different. The primary difference is that plants are capable of producing their own food, while animals rely on outside sources. Plants take in carbon dioxide, water, and other nutrients and turn them into glucose and oxygen via photosynthesis.

Animals, on the other hand, must consume food to survive. The digestive system of plants includes a few structures and processes that are not present in animals, such as chloroplasts, which contain chlorophyll, and stoma, which regulate gas exchange. Plant Digestive System The primary function of a plant's digestive system is to convert light energy into chemical energy that can be used to fuel the plant's cellular processes.

The resulting glucose and oxygen are then used by the plant to fuel cellular processes and support growth.

Animal Digestive System : The animal digestive system, unlike the plant digestive system, is specialized for the consumption and breakdown of food. The digestive system of animals begins in the mouth, where food is taken in and begins to be broken down by enzymes in the saliva. The food then moves through the esophagus to the stomach, where it is further broken down by stomach acid and enzymes. The nutrients are then absorbed in the small intestine, while the waste products are eliminated in the large intestine.

Conclusion : In conclusion, the digestive systems of plants and animals are quite different. While both systems involve the absorption and use of nutrients, plants are capable of producing their own food, while animals must consume food to survive. Additionally, the structures and processes involved in each system are unique.

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In plant cells, chloroplasts are the organelles that convert solar energy into chemical energy (sugars) through the process of photosynthesis.

Chloroplasts contain a pigment called chlorophyll, which captures light energy from the sun. This energy is then used to convert carbon dioxide and water into glucose (a sugar) and oxygen. Chloroplasts are responsible for the green coloration of plants due to the presence of chlorophyll. On the other hand, the rough endoplasmic reticulum is involved in protein synthesis, mitochondria are responsible for cellular respiration and energy production, and vacuoles play a role in storage and maintaining cell turgor pressure.

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The large lateral outgrowths that compose the telencephalon are the cerebral hemispheres.

The cerebellum, brainstem, and cerebrum make up the brain. The cerebrum occupies most of the cerebral volume. The cerebrum regulates somatosensory, motor, linguistic, cognitive, memory, emotional, auditory, and visual functions.

The corpus callosum keeps the left and right hemispheres in touch and in communication with one another despite the deep longitudinal fissure that separates the cerebrum's left and right hemispheres. The frontal, parietal, occipital, and temporal lobes are additional divisions of each hemisphere.

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It is statistically possible that every single base pair in the E. coli genome has experienced a mutation in a 5 ml E. coli overnight culture.

However, it is important to note that not all mutations will be beneficial or result in observable changes in the phenotype, and the frequency of mutations will depend on many factors, such as selection pressure and genetic drift.

The probability that every single base pair in the E. coli genome has experienced a mutation in a 5 ml overnight culture can be calculated using the following equation:

P = (mutation rate per base pair per DNA replication)^(number of replications per cell)^(number of cells)

The mutation rate of E. coli is \(10^{-9}\) per base pair per DNA replication. E. coli has a genome size of approximately 4.6 million base pairs. During each cell division, E. coli replicates its genome once. In an overnight culture, E. coli will undergo approximately 10 generations, or \(2^{10}\) = 1024 replications.

Using these values, we can calculate the probability of a mutation occurring in a single base pair in a single cell division as

P = \((10^{-9})^{(1)(1)} = 10^{-9}\)

The probability of a mutation occurring in a single base pair in all 10 generations of a single cell is:

P = \((10^{-9})^{(1024)}\) ≈ 0

However, in a population of \(10^{10}\) cells, the probability that at least one cell will experience a mutation in every single base pair is:

P = \(1 - (1 - 10^{-9})^{(4.6 million x 10^{10})}\)≈ 1

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The probability of a mutation occurring at a particular base pair in a single round of DNA replication in E. coli is 10^-9. In a 5 ml overnight culture, there are approximately 10^10 E. coli cells. Therefore, the probability that any single E. coli cell in the culture will acquire a mutation at a specific base pair in one round of DNA replication is 10^-9.

However, since each E. coli cell undergoes multiple rounds of DNA replication during the overnight culture, the probability of at least one mutation occurring at a specific base pair in a single E. coli cell is much higher. Assuming each cell undergoes 5 rounds of replication, the probability that a single E. coli cell in the culture will acquire a mutation at a specific base pair in any one of the 5 rounds is approximately 5 x 10^-9.

Given that there are 10^10 E. coli cells in the culture, the probability that at least one E. coli cell in the culture has a mutation at a specific base pair is approximately 1 - (1 - 5 x 10^-9)^10^10, which is about 40%. Therefore, it is possible statistically that every single base pair in the E. coli genome has experienced a mutation in a 5 ml E. coli overnight culture, although the probability is relatively low.

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Answer:

Nope

Explanation:

A robot cannot be living if it doesn't have a heart or a brain

Answer:

A self-supporting robot is not living, because it is not self-replicating. A robot is non-living until it is self-replicating and self-supporting. A self-replicating program is not living, because it is not self-supporting. A remarkable combination of artificial intelligence (AI) and biology has produced the world's first “living robots”. ... One of the researchers described the creation as “neither a traditional robot nor a known species of animal”, but a “new class of artifact: a living, programmable organism”:

(So, unknown.)

Answer:

Actually, organelle replication, occurs during the G2 stage of the cell cycle. During this stage, organelles are replicated and proteins are synthesized. The G2 phase follows DNA replication which occurs during the S-phase.

Explanation:

organelle replication, occurs during the G2 stage of the cell cycle. During this stage, organelles are replicated and proteins are synthesized. The G2 phase follows DNA replication which occurs during the S-phase.

DON'T COPY AND PASTE THAT!! You will get a bad score because l looked it up.

Answer:

#2

Explanation:

Group of similar cells that perform a particular function.

Answer:

They face vary of things such as asexual reproduction

Explanation:

Answer:

its a

Explanation:

trust

Answer:

Interstitial fluid

Explanation:

Neurons in the LGN have center-surround receptive fields. center-surround side-by-side columnar ill-defined ambiguous.

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Answer:

In chemosynthesis, bacteria grow in mineral-rich water, harnessing chemical energy to make organic material. Chemosynthesis can sustain life in absolute darkness. The most extensive ecosystem based on chemosynthesis lives around undersea hot springs.

Explanation:

Hope it helps! =D

Of the available options, the first one states that cellulose is a structural part of the hair, this is not correct for several reasons, first cellulose is a biopolymer characteristic of cellular walls in plants, and it's not present in animal cells, secondly human hair is formed mainly of keratin a protein, therefore their basic units are amino acids, not carbohydrates. Therefore taking this into consideration, the correct answer is option 1.

The planet did that student represent is Neptune

balloon outside and students will pace off the distance to each planet, using this scale as a guide. Sam's teacher has

told the class to use the idea of a "pace" as a unit of measure for the activity. A pace is two steps-one with each foot.

One pace is about 1 meter. The students predicted how many paces it would take to reach each planet. It takes 6

paces to reach Mercury and Pluto was 592 paces from the start.

When  they had completed the activity, one student

had stopped at 287 paces. The student represent the planet Neptune.

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A collection of extracellular collagen fibers all running the same direction to join one bone to another bone is called "ligament".

Ligaments are fibrous connective tissues that play a vital role in connecting bones to other bones in the body. They are composed of specialized cells called fibroblasts and a dense arrangement of collagen fibers.

The primary structural component of ligaments is collagen, a strong and flexible protein that provides tensile strength. Collagen fibers in ligaments are arranged in parallel and aligned in the same direction. This alignment allows the ligament to resist forces applied in a specific direction, providing stability and support to the joints.

The collagen fibers within ligaments are organized in bundles or fascicles. These bundles run parallel to each other, creating a fibrous structure that resembles a rope or cable. The alignment of collagen fibers in a ligament is crucial for its function, as it enables the ligament to effectively transmit forces between bones and maintain joint stability.

When two bones are connected by a ligament, it acts as a strong band, holding the bones together while allowing controlled movement at the joint. Ligaments are responsible for limiting excessive joint movement, preventing dislocation, and providing stability during physical activities.

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