How are eukaryotic genes regulated?.

Answer:

This question is incomplete and lacks options, the whole question is:

Plant hormones serve as chemical messengers between cells and tissues. Auxin is a plant hormone that causes the cells on the shady side of a plant shoot to elongate. The response enabled by auxin is known as -

Options are:

A. geotropism

B. transpiration

C. phototropism

D. photosynthesis  

The correct answer is c.

Explanation:

Phototropism is known as a natural and organic movement of a plant towards the light. This is due to the natural ability of a plant to change direction based on changes in lighting in the environment. But external stimulus is not enough. It must generate some changes inside the plant that make it react in this way: hormones. A hormone is a chemical substance produced in one tissue and transported to another, in which it exerts one or more highly specific effects.Auxins are members of a group of plant hormones that are more beneficial to stimulate plant growth, it is the responsible mechanism of the response to phototropism in plants, which tends to be concentrated in the region of the stem and leaves, when a plant lacks this, it can be noted since the bending towards the light source is little or no, that is, auxins make the cells of the stem growth region (rhizomes and stems) lengthen.

Answer:

40% of adenine is present

Explanation:

Answer:B

Explanation:

Answer:

3.2.1 Mitosis - Both A and B

3.2.2 Chromosome - Both A and B

3.2.3 Phases in the cell cycle - Both A and B

3.2.4 Tumor - Both A and B

3.2.5 Bone cancer - B only

Explanation:

1. Mitosis is a process of cell replication , in which one cell divides into two identical daughter cells having the same number of chromosomes. In mitosis, the two new cells are genetically identical. Copies of the chromosome (containing the DNA) are made and distributed equally to each cell. Some organisms such as bacteria reproduce entirely by mitosis.

In cloning, an organism that is genetically identical to another organism is made from that original organism. Cloning can occur naturally or may be done by man artificially. In nature, many organisms produce clones through asexual reproduction for example bacteria produces clones by mitotic binary fission.

Therefore, the phrase mitosis, applies to both A and B.

2. Chromosomes are structures found within the nucleus of cells that contain the genetic material of the organism. The chromosomes are composed two identical structures called chromatids thar are joined together to at a constricted point known as centromere.

During cell division, long fibres extend from the centroiles at the ends of the cell to the centromere of the nucleus in order to pull them apart. These long fibres are known as spindle fibres.

Therefore, the phrase, Chromosome, applies to both A and B

3. The phases in the cell cycle are divided into two major stages : interphase and Mitosis. In interphase, the cell grows and makes a copy of its DNA.

In mitotis, the cell DNA divides into two sets, the cytoplasm divides, forming two new cells.

Thus, phases of cell cycle applies to both A and B

4. Tumours are abnormal growths occurring in any part of the body which may be benign or malignant.

Benign tumours are harmless growth which do not have spread out to other tissues to form various cancers.

Malignant tumors spread out from their point of growth to other tissues leading to cancer in these other tissues and organs.

Therefore, tumors applies to both benign and malignant.

5. Bone cancer refers to abnormal growth of bone cells.

Carcinomas are cancers of the skin and tissue lining of organs.

Leukaemia are cancers affecting the bone marrow, whereby the bone marrow makes abnormal white blood cells, red blood cells and platelets.

Thus, bone cancer only applies to B.

The endoplasmic reticulum forms the nuclear membrane around the collections of daughter chromosomes during the telophase.

The cell's nucleus, which houses the chromosomes, is encased by the double-layered nuclear membrane. The nuclear membrane serves to keep the chromosomes apart from the cytoplasm and other components of the cell. Certain substances, including nucleic acids and proteins, can selectively flow between the nucleus and cytoplasm thanks to a variety of tiny holes or pores in the nuclear membrane.

Two bilayers of phospholipids make up the nuclear membrane. The outer nuclear membrane (ONM), which faces the cytoplasm, is known as such, and the inner nuclear membrane (INM), which faces the nucleoplasm. The ONM and Endoplasmic reticulum (ER) are permanently connected, and both have ribosomes as surface decorations.

During cell division, a membrane remodeling process called nuclear membrane formation occurs around daughter chromosomes.

A tubular Endoplasmic Reticulum (ER) network is where the nuclear membrane arises. DNA-binding proteins in the ER carry out the entire process. The endoplasmic reticulum is actively reshaped by chromatin during the development of the nuclear membrane.

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Answer:

groundwater refers to the water present underground, in the spaces and cracks in the sand, soil, and rock.

Explanation:

Answer: Your welcome!

Explanation:

Osmosis is the process by which water moves from an area of low salt concentration to an area of high salt concentration. When you drink salt water, the water in your body has a lower salt concentration than the salt water you are consuming. The salt water will then try to move into your cells, attempting to balance out the salt concentrations. This process causes your cells to swell as they become filled with water, and too much of this can cause cells to rupture. Additionally, salt water causes dehydration because the body can’t process the salt, and the body will expel water to try to dilute the salt. So drinking salt water can be extremely dangerous because it can lead to dehydration and can cause cells to rupture.

Answer:

26%

Explanation:

Adenine and Thymine are pairs. Therefore, they must have the same amount.

It must always equal 100% and base pairs always have the same amount.  So in this case Adenine and Thymine would be 26% and Guanine and Cytosine would be 24%.

Test question: If a DNA strand has 10% Guanine how much Adenine would there be?

Answer: G-10, C-10, A-40, T-40= 100%

I hope this helps! :)

Answer:the answer is presence of worms and growth of plants

Explanation: got it right on edg

Answer: Ornaments is the odd one out.

Explanation:

When the blood glucose level rises after a meal, the first organ to respond is the pancreas.

Insulin is a hormone produced by the body to regulate blood sugar levels. When the glucose level rises in the blood, the insulin secreted causes glucose to be transported to the cells from the blood. In the cells, the extra glucose is used accordingly and the cells of the liver and muscles can store it as glucagon.

Hence, when the blood glucose level rises after a meal, the pancreas makes insulin to balance the blood sugar levels.

Other options, such as the stomach, is not correct as the stomach is involved in the digestion of food and does not lower blood sugar levels.

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Explanation:

1.(from Latin: carbo "coal") is a chemical element with the symbol C and atomic number6. It is nonmetallic and tetravalent—making fourelectrons available to form covalent chemical bonds. It belongs to group 14 of the periodic table.[13] Carbon makes up only about 0.025 percent of Earth's crust.[14] Three isotopesoccur naturally, 12C and 13C being stable, while14C is a radionuclide, decaying with a half-lifeof about 5,730 years.[15] Carbon is one of thefew elements known since antiquity.[16]

2.

In an adult, C. Anterior iliac crest and tibia are the two best areas for obtaining active bone marrow by aspiration.

In adults, the two most common and recommended areas for obtaining active bone marrow by aspiration are the anterior iliac crest (located in the pelvic region) and the tibia (shinbone). These sites are chosen for their accessibility and the abundance of active bone marrow.

The anterior iliac crest is a preferred site for bone marrow aspiration due to its relatively easy accessibility and the presence of a substantial amount of active bone marrow. The iliac crest is the curved ridge at the top of the hip bone, and the anterior portion refers to the front side of this ridge.

The tibia, or shinbone, is another site commonly used for bone marrow aspiration. It is a long bone located in the lower leg and offers a relatively accessible location for the procedure.

Both the anterior iliac crest and the tibia provide a sufficient amount of active bone marrow, which contains stem cells and various blood cell precursors. These sites are commonly utilized for diagnostic and therapeutic purposes, such as in the assessment and treatment of hematological disorders or bone marrow transplantation.

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Answer:

Hi, there

1. Double

2. sugar and phosphate

3. nitrogen bases

4. Guanine

Explanation:

Hope this helps

Also, they go in order it starts off with double and ends in Guanine

Answer:

Evolution

Explanation:

It appears that there is a general trend of higher chlorophyll levels in the Gulf of California during the summer months and lower chlorophyll levels during the winter months. This is likely due to the influence of seasonal factors such as temperature, sunlight, and ocean currents.

For example, during the summer months, the Gulf of California experiences warmer temperatures and more direct sunlight, which can promote the growth of phytoplankton and increase chlorophyll levels. In contrast, during the winter months, the Gulf of California may experience cooler temperatures and reduced sunlight, which can limit phytoplankton growth and decrease chlorophyll levels.

Additionally, the animation shows that there are occasional spikes in chlorophyll levels that occur at specific times of year. It is not clear from the animation what causes these spikes, but they may be related to localized factors such as upwelling events or changes in ocean currents that bring nutrients to the surface.

Overall, the variation in chlorophyll levels in the Gulf of California during the two-year period covered by the animation is likely due to a combination of seasonal and localized factors that influence phytoplankton growth and distribution.

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Answer:

a surface of contact between two groups of unconformable strata.

When an organism is homozygous, it contains two copies of the same allele for a gene. When an organism possesses two copies of the same dominant allele.

If the chinchilla rabbit breeds exclusively, all of the offspring would be chinchilla; however, if any other alleles, such as the Himalayan or albino allele, are present, there will be offspring with various colors in the phenotypic ratio of 1 chinchilla: 1 Himalayan/albino.

You have a 25% (1 in 4) chance of inheriting the faulty gene from both parents and getting the condition if you are born to parents who share the same autosomal recessive gene. One faulty gene can be inherited with a 50% (1 in 2) risk. You would then become a carrier.

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A handful of dried apricots would be a nutritious low-fat, high-carbohydrate pre-event snack for an athlete because dried apricots are a source of carbohydrates. Option A.

Dried apricots provide a good source of carbohydrates, which are important for providing energy to fuel athletic performance. They are low in fat, making them a healthier choice compared to options such as peanut butter on celery, sausage pizza, or French fries, which are higher in fat content. Hence, option A is correct.

While peanut butter on celery does contain some protein and healthy fats, it is not as high in carbohydrates as dried apricots. Sausage pizza and French fries are high in fat and not as beneficial for providing the immediate energy needed before athletic activities.

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Cellssssssssssssssssss

Answer:

The following sentence is true regarding the triplet code of DNA: Each amino acid is coded for by three DNA bases.

Explanation:

The genetic code is a set of rules that specify the correspondence between the three-letter codons in DNA and the twenty standard amino acids used to build proteins. Each codon codes for a single amino acid, except for three "stop" codons that signal the end of the protein sequence. Therefore, a sequence of three DNA bases (a triplet) corresponds to a specific amino acid, and the order of the triplets determines the order of amino acids in the protein sequence.

Answer: woooow

Explanation:

The buffalo sinew was converted by the people of the plains into thread and bowstrings. Here option 1 is the correct answer.

Sinew is a strong, fibrous tissue found in the back and legs of animals, including buffalo, that connects muscle to bone. It is made up of long, collagen fibers that are naturally flexible, strong, and elastic, making it ideal for use as bowstring material.

The plains people harvested the sinew from buffalo and other animals, such as deer and elk, and treated it to make it durable and resistant to moisture.

They would scrape off the outer layer of the sinew, leaving behind the strong, white fibers, which they would then twist into strong and durable threads. These threads were used to make bowstrings, fishing lines, snares, and other equipment that required strength and durability.

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An open wound is a type of injury that causes an external or internal break in the body's tissue. It is commonly caused by accidents involving sharp or rough objects that cut through the skin and leave some form of trauma. If left alone, it exposes the body to harmful bacteria, making it at risk of infection.

Answer: Falling down on the asphalt

The one surprising exception to the favorable pattern of decreased midlife mortality rates in developed countries since 1990 is the United States.

According to a study published in the British Medical Journal in 2018, while other developed countries have seen a steady decrease in midlife mortality rates since 1990, the midlife mortality rate in the United States has actually increased. The study found that the midlife mortality rate for Americans aged 25-64 increased from 381.5 per 100,000 in 1999 to 442.8 per 100,000 in 2017. This increase translates to approximately 32,000 excess midlife deaths in 2016 alone.

The increase in midlife mortality rates in the United States is a surprising exception to the overall trend in other developed countries. The reasons for this increase are multifactorial and complex. Factors contributing to this increase include the opioid epidemic, inadequate access to quality healthcare, and socio-economic disparities. Addressing these issues would require a multifaceted, coordinated effort including policy and treatment interventions, social and cultural changes, and support for comprehensive preventive healthcare strategies.

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Answer:biotic factors

Explanation:

They are living

Food availability, places to live, and water availability are all Abiotic Factors of an Ecosystem.

Biotic and abiotic factors make up ecosystems in which biotic factors are living things within an ecosystem such as plants, animals and bacteria, while abiotic are non-living components such as water, soil and atmosphere.

An abiotic factor is a non-living part of an ecosystem that shapes its environment. In a terrestrial ecosystem, the abiotic factors are temperature, light, and water. In a marine ecosystem, the abiotic factors are salinity and ocean currents. Abiotic and biotic factors work together to form a unique ecosystem.

Biotic components are living things that have a direct or indirect effect on other organisms in the environment such as animals, and microorganisms and their waste materials.

Thus, food availability, places to live, and water availability are all Abiotic Factors of an Ecosystem.

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Given what we know about the way energy moves through the Earth, we can confirm that the vulture uses the hot air currents that result from this movement of energy to soar above the cliff.

The energy from the sun travels through the atmosphere, then into the soil where it is absorbed. The soil then radiates the heat back out into the atmosphere.

Given that hot air rises, this radiated heat causes the formation of hot air currents that the vulture then uses to glide upwards in a circular motion.

The vulture planes over the hot air currents with its wings at an angle to climb, it goes higher the further it wishes to travel given that once at the desired height, it glides downward towards its destination.

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This error occur at the sixth position of Beta Globin Chain of Haemoglobin molecule.

Amino acids are natural compounds that include both amino and carboxylic acid functional agencies. Even though masses of amino acids exist in nature, by way of far the most important are the alpha-amino acids, which incorporate proteins.

Foods that comprise all nine critical amino acids are known as entire proteins. Those ingredients consist of beef, fowl, fish, eggs, dairy, soy, quinoa and buckwheat. ingredients that comprise a few but not all of the essential amino acids are known as incomplete proteins, those meals consist of nuts, seeds, beans and a few grains.

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The Proteinaceous structure of the virus can mutate over time and lead to the development of new strains.

The mutation may be defined as the phenomenon of altering the sudden, stable, and inheritable genomic sequences of the organisms.

The outer layer of the virus is made of proteins and is hence known as a capsid. This layer is responsible for the allocation of mutations over time and leads to the development of new strains with respect to protein structures.

The changes in protein structures alter the whole physiology, metabolic, and anatomy of viruses accordingly.

Therefore, it is well described above.

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C cells of the thyroid gland secrete calcitonin.

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Disclaimer: The question was given incomplete on the portal. Here is the complete question.

Question: The C cells of the thyroid gland secrete

a) TSH.

b) parathormone.

c) thyroxine.

d) triiodothyronine.

e) calcitonin