accelerometry for remote monitoring of physical activity in amyotrophic lateral sclerosis: a longitudinal cohort study

Answer:

A. Lactic acid.

Explanation:

Answer:

Epithelial tissue is composed of cells laid together in sheets with the cells tightly connected to one another. Epithelial layers are avascular, but innervated.

Epithelial cells have two surfaces that differ in both structure and function.

The epithelial cells are nourished by substances diffusing from blood vessels in the underlying connective tissue. One side of the epithelial cell is oriented towards the surface of the tissue, body cavity, or external environment and the other surface is joined to a basement membrane. The basement layer is non-cellular in nature and helps to cement the epithelial tissue to the underlying structures.

Chromosome crossover increases genetic variability by giving offspring chromosomes that differ from those of their parents.

The degree of genetic variation in a population is significant because natural selection depends on different alleles to change their frequencies for the better or worse.

Crossover is a process that results in fresh allele combinations in the gametes (egg or sperm) produced, assuring genetic diversity in any offspring produced.

Meiosis, also known as crossing over or recombination, is a process in which nonsister chromatids swap chromosomal regions. Cross-pollination creates new gene combinations in the gametes that are not present in either parent, increasing genetic diversity.

A species' genetic diversity is largely a result of meiosis. Two processes—independent assortment and crossing over—are the main means by which it achieves this (recombination).

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Answer:

Learn vocabulary, terms, and more with flashcards, games, and other study tools. ... According to Mendel, what kinds of genes "disappear" in F1 pea plants? ... The allele for tall (D) is dominant to the allele for dwarf (d), and the allele for purple (P) ... A tall plant with purple flowers crossed with a dwarf plant with white flowers ...

Explanation:

If there is a cross between a tall, violet plant (DDWw) and a dwarf, white plant, the progeny would be 100% tall and 50% violet.

In genetics, complete dominance means that only one gene from the allele pair is expressed. If an organism has both the dominant and the recessive genes, the organisms is said to be heter--ozygous.

Thus if there is a cross between a tall, violet plant (DDWw) and a dwarf, white plant, the progeny would be 100% tall and 50% violet because the dominant gene is always expressed.

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Answer:

Most put it down to the hypnotic effect of watching fish swim back and forth in their tank; it's an innately calming movement, and one that can help to relax the mind and ease muscle tension.

Explanation:

Read it online

Answer: Most put it down to the hypnotic effect of watching fish swim back and forth in their tank; it's an innately calming movement, and one that can help to relax the mind and ease muscle tension.

Explanation:

Mitochondrial DNA can be traced for generations  best describes mitochondrial DNA (mtDNA).

Mitochondrial DNA is the circular chromosome found inside the cellular organelles called mitochondria. Located in the cytoplasm, mitochondria are the site of the cell's energy production and other metabolic functions. Offspring inherit mitochondria and as a result mitochondrial DNA from their mother.

The mitochondrial genome is circular, whereas the nuclear genome is linear. The mitochondrial genome is built of 16,569 DNA base pairs, whereas the nuclear genome is made of 3.3 billion DNA base pairs. Unlike the DNA inside the nucleus, it is not a mixture of our parent's DNA, and each person's mtDNA is nearly identical to his or her mother's mtDNA.

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Answer:

1. surface area
2. concentration
3.distance

Explanation:
more surface area means a faster rate, and smaller distance means faster rate

The molecular weight of the DNA determines how quickly it migrates through the gel.

What is DNA?

A polymer made of two polynucleotide chains that coil around one another to form a double helix is called deoxyribonucleic acid. All known organisms and many viruses have genetic information in the polymer that is necessary for their development, operation, growth, and reproduction. Nucleic acids include DNA and ribonucleic acid (RNA). Nucleic acids are one of the four main categories of macromolecules that are necessary for all known forms of life, along with proteins, lipids, and complex carbohydrates (polysaccharides). Because the two DNA strands are made up of simpler monomeric units termed nucleotides, they are referred to as polynucleotides.

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For nutrients like nitrogen or phosphorus are frequently a source of restriction for photosynthetic organisms (like kelp or phytoplankton).

While phosphorus (P) limitation typically occurs in tropical locations, nitrogen (N) is generally regarded as the primary limiting component in temperate regions. However, nutrient limitation in subtropical regions is little known.

Nitrogen (N), phosphorus (P), and potassium are the three main limiting nutrients in crop yield (K). These three nutrients are frequently added as parts of commercial fertiliser or manure to agricultural areas. You need to understand that the three limiting parameters for photosynthesis are light intensity, CO2 concentration, and temperature. Although a scarcity of water can slow down photosynthesis, other plant functions are typically affected before photosynthesis

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Answer: it must go through a period known as interphase.

Explanation:

Before a cell can enter the active phases of mitosis, however, it must go through a period known as interphase, during which it grows and produces the various proteins necessary for division.

Answer:

um the answer is theories

Explanation:

In sensory memory, auditory stimuli are to echoic memory as visual stimuli are to iconic memory.

After the initial stimulus has stopped, humans can still remember their impressions of sensory information thanks to sensory memory, which is a very short memory. It is frequently considered the first stage of memory, registering a huge amount of information about the surroundings for a very short time.

The information we get from our senses is stored in the sensory register and memory. Examples of sensory memory include smelling chicken noodle soup, feeling gum under a chair, and seeing a dog. These signals are sent to the brain by our eyes, noses, and nerves.

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Answer: 1. ostia, 2. osculum, 3. Choanocytes, 4.  The approximately 5,000 living sponge species are classified in the phylum Porifera, which is composed of three distinct groups, the Hexactinellida (glass sponges), the Demospongia, and the Calcarea (calcareous sponges).

Explanation:

Answer:

small bcz they had not fully evolved

Answer:

large

Explanation:

Answer:the answers is B

Explanation:

Because reproduction occurs between homologous a chromosome

During meiosis, a process known as crossing over occurs. Genetic information is removed from both chromosomes.

Meiosis is the process  where a single cell divides twice to produce four four haploid daughter cells which are otherwise called as gametes; It can occur in two substages such as meiosis I and meiosis II.

Humans have 46 chromosomes in every cell,  where 23 chromosomes t came from one of our parents and 23 very similar chromosomes that came from the other parents.

Meiosis I consist of substages like Prophase I where nuclear envelope disintegrates, Chromosomes begin to condense, Spindle fibres appear.

Secondly Prometaphase I where Spindle fibres attach to the  centromere followed by Metaphase I where The homologous chromosomes align at the equatorial plate, Anaphase I where he homologous chromosomes move towards the opposite poles.

Telophase I where Spindle fibres disappear, Cytokinesis I where the cytoplasm and the cell division result in 2 non-identical haploid daughter cells.

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The system of classification, first developed by Linnaeus in the 1700's, which is now used by biologists and paleontologists has modern humans and their near relation in the Genus Homo.

The genus Homo is a taxonomic classification that includes modern humans (Homo sapiens) and several extinct species that are closely related to humans. It is part of the family Hominidae, which also includes great apes such as chimpanzees, bonobos, gorillas, and orangutans. The genus Homo is characterized by certain distinctive traits that separate it from other hominin species. These traits include an upright bipedal posture, a larger brain size relative to body size, reduced facial and dental features, and the ability to create and use complex tools.

The earliest known species in the genus Homo is Homo habilis, which lived approximately 2.4 to 1.4 million years ago. Homo habilis is considered one of the earliest tool-makers and was likely capable of simple stone tool production. Another significant species is Homo erectus, which existed from around 1.9 million to 143,000 years ago. Homo erectus had a larger brain size and more advanced tool-making abilities than earlier hominin species.

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Answer: A natural disruption occurs when ice blocks a lake during the winter, resulting in a decreased food source for fish.

Explanation:

Events or processes known as "natural disturbances" take place in the natural world without human interference and have a big influence on ecosystems. In this instance, the lake's capacity to support fish is constrained by the creation of ice throughout the winter. As a barrier, the ice keeps sunlight from penetrating the water and reduces photosynthesis, and this in turn has an impact on the development of algae and other main producers. As a result, the lake's food chain is thrown off, which has an effect on the number of fish and their capacity to locate enough food.

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Answer:

true

Explanation:

Answer:

true

Explanation:

The processes that occur in an ecosystem include biomass increasing in each successive trophic level, inorganic nutrients being recycled, and chemical energy being stored in carbon compounds.

The processes that occur in an ecosystem include biomass increasing in each successive trophic level, inorganic nutrients being recycled, and chemical energy being stored in carbon compounds.

This means that organisms at higher trophic levels consume those at lower levels, resulting in an increase in biomass as energy is transferred. Inorganic nutrients, such as nitrogen and phosphorus, are cycled through the ecosystem as they are used by organisms and returned to the soil through decomposition.

Chemical energy is stored in carbon compounds, such as glucose, through photosynthesis and is used by organisms for energy.



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Answer:

Explanation: Your blood sugar won't fall too low thanks to glucagon.

Your pancreas' alpha cells produce glucagon, which is then released in reaction to a reduction in blood sugar, prolonged fasting, physical activity, and meals high in protein.

There is a hormone called glucagon that prevents your blood sugar from dropping too low. Alpha cells in your pancreas produce glucagon. This is released when the blood sugar drops when you fast for a prolonged period of time when you exercise, and when you eat a protein-rich meal.

Hope this helps :)

Answer:

an increase or decrease in temperature

Explanation:

it the only that makes since

Answer:

the ability to perceive the relative distance of objects in one's visual field.

Explanation:

The stratigraphy drawing can be used to determine the relative ages of the different layers. Radiocarbon dating can be used to date layer B containing an unfossilized bone.

The layer at the bottom of the stratigraphy drawing is the oldest, indicated by the letter "A." The layer at the top of the stratigraphy drawing is the youngest, indicated by the letter "E."

To date layer B contains an unfossilized bone, one could use radiocarbon dating, also known as carbon-14 dating. This dating method relies on the radioactive decay of carbon-14, which is found in organic materials, such as bone. Carbon-14 dating can be used to determine the age of the bone up to approximately 50,000 years ago, which makes it an appropriate dating method for layer B in the stratigraphy drawing.

To determine a chronometric date for the fossilized bone found in layer D, a combination of different dating methods could be used. Since layers C and E are made of volcanic rock, it is possible to use radiometric dating techniques, such as potassium-argon dating or argon-argon dating, which rely on the decay of radioactive isotopes of potassium to argon, to date these layers.

Once the dates for layers C and E have been determined, it would be possible to bracket the age of layer D. Additionally, other dating methods, such as paleomagnetism, which uses changes in the earth's magnetic field to date rock formations, could be used to further refine the age range of layer D. Ultimately, a combination of dating methods would be necessary to determine a reliable chronometric date for layer D.

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A cell membrane, also known as a plasma membrane, is a thin, semipermeable barrier that surrounds the cytoplasm of a cell and separates the cell from its environment.

What do you mean by cytoplasm?

Cytoplasm is the fluid-like substance found in the interior of a cell, excluding the nucleus. It is composed primarily of water and contains a variety of organic and inorganic molecules, ions, and organelles. It functions as the cell’s metabolic center and plays important roles in many cell processes, such as energy production, protein synthesis, and cell division.

Five important key features of the cell membrane:

1. Phospholipid Bilayer:  The phospholipid bilayer is important for regulating the flow of substances both into and out of the cell, allowing the cell to acquire the nutrients it needs and expel waste.

2. Glycoproteins: They are important for cell-to-cell communication, as they bind to specific receptors on other cells to facilitate communication between the cells. They also act as recognition sites for hormones and other molecules that enter the cell.

3. Cholesterol: Cholesterol is a fatty molecule that helps stabilize the cell membrane and prevents it from becoming too rigid or too fluid. It also helps regulate the movement of substances across the cell membrane.

4. Integral Proteins: They are important for transporting molecules across the membrane, as well as for recognizing and interacting with other molecules.

5. Peripheral Proteins: They play an important role in cell signaling and regulation, as they can interact with other proteins or molecules on the cytoplasmic side of the cell membrane. They are also important for anchoring the membrane to the cytoskeleton.

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Answer:

Explanation:

If you don't have functioning intestinal villi, you can become malnourished or even starve, regardless of how much food you eat, because your body simply isn't able to absorb and make use of that food

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Yes. Even if we eat food while hanging upside down, it will go through the alimentary canal because of the process of peristalsis. The muscles of the oesophagus will push the food downwards in a wave like action throughout the alimentary canal.

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I think potato chips

Answer:

To visualize the cell membrane using the fluorescent microscope.

Explanation:

Researchers may be able to track membrane proteins in living animals using the labeling technique. To get rid of dye molecules that aren't attached to the protein when a scientist uses a dye to label a membrane protein, she must repeatedly wash the cells.

Thank you.

When ischemia happens, there is C. Increase in cytosolic calcium is predicted to occur in ischemic tissue during ischemia.

Ischemia is a condition that happens when blood flow to an area of the body is blocked. It might happen as a result of a blood clot, narrow arteries, or any other condition that results in reduced blood flow. Oxygen and nutrients are carried by the blood, and when the supply is cut off, the tissues start to deteriorate and become damaged, which can have long-term consequences.

When ischemia occurs, the oxygen and nutrient supply to the tissue are drastically reduced. This results in a metabolic shift, with anaerobic respiration becoming the primary source of energy. This leads to an increase in cytosolic calcium since it activates calcium channels, which contributes to cell death via several mechanisms. The calcium overload also causes an increase in reactive oxygen species, which further exacerbates cell death. Glycogen breakdown is also increased as a result of ischemia, which results in the production of lactic acid, contributing to acidosis. Cytosolic sodium, on the other hand, decreases due to the activation of Na+/H+ exchangers.

Hence, the correct answer is option C, increase in cytosolic calcium.

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Lustre and hardness are the two mineral characteristics that can be utilised to identify the minerals in the rock. Lustre, which refers to the way light reflects off a mineral's surface, can be metallic, glassy, or drab.

On the Mohs scale of hardness, hardness is a measurement of how easily a mineral may be scratched.

It is possible to determine the minerals present by comparing the rock's lustre and hardness to those of recognised minerals and learning about their properties.

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Answer:

Yes.

Explanation:

This is because fatigue itself is a brain-derived emotion that regulates the Exercise Behavior. Hence, this is to ensure the protection of Whole Body Homeostasis.

Hope this helps mate.

Answer:

ozone oxygen nitrogen are the answers

The fish produce waste called ammonia which is converted by bacteria into nitrite which is then converted into nitrate that can be used by the plants.

Fish excrete ammonia as a waste product, primarily through their gills. This ammonia is toxic to fish in high concentrations. However, beneficial bacteria called nitrifying bacteria in the aquatic environment convert ammonia into nitrite through a process called nitrification. Nitrite is still toxic to fish but is further processed by another group of bacteria called nitrite-oxidizing bacteria into nitrate, a much less toxic form.

Nitrate is then available as a nutrient for plants. Through a process called assimilation, plants take up nitrate from the water or soil through their roots and use it to synthesize proteins, nucleic acids, and other essential compounds for their growth and development.

This cycle, known as the nitrogen cycle, is crucial for maintaining the balance of nutrients in aquatic ecosystems and the availability of essential nitrogen compounds for plant growth.

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