Which of the following regions acts an an autonomic reflex center of the brain? -medulla oblongata -cerebellum -midbrain -pons

Dominant character:are always expressed when the connected allele is dominant,even if only one copy of the dominant trait exits.

Recessive character:are expressed only if both the connected allele are recessive.

Answer:

Dominant and recessive traits exist when a trait has two different forms at the gene level. The trait that first appears or is visibly expressed in the organism is called the dominant trait. The trait that is present at the gene level but is masked and does not show itself in the organism is called the recessive trait.

Explanation:

If some traits are absent or not expressed, but found in the parent, then the allele is said to be recessive.

Difference Between Recessive and Dominant Traits

DOMINANT

Dominant Trait Recessive Trait

Dominant allele is denoted by a capital letter

RECESSIVE

Recessive allele is denoted by a small letter

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Answer:

B.

Explanation:

assuming the egg doesn't have a shell, only a membrane, the water inside of the egg would diffuse outside via osmosis to the lower concentration of water. hope this helps

92% water in beaker, 99% water in egg in this situation egg will shrink.

Osmosis is the Latinized version of the now-outdated word osmose. Osmotic, which means "pertaining to or of the character of osmosis," is a derived word. Osmotic pressure, for example, is a pressure that results from or is associated with osmosis.

As a rule, water molecules flow downward, from an area with a high concentration of water (or fewer solutes) to one with a low concentration (or greater solutes). Osmosis cannot be used if there is no net water flow. A semipermeable membrane should be included for movement.

Water molecules require channel proteins to move down their concentration gradient because they are polar molecules. These channel proteins create a hydrophilic channel for water to pass through that is embedded in the cell membrane.

Therefore, 92% water in beaker, 99% water in egg in this situation egg will shrink.

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Answer:

The female part of the flower is called gynoecium or pistil

Explanation:

The female part of a flower is called the gynoecium or pistil. The pistil is located in the center of the flower and consists of three parts: the stigma, style, and ovary.

The stigma is a sticky knob-like structure located  at the top of the pistil. It is covered with a sticky substance so pollen grains will stick to it. It is attached to the long, tubelike structure called the style.

The style is a long  long tubelike structure which connects the stigma to the ovary. The style provides the pathway through which the pollen grains will travel to the ovary in order to fertilize the eggs or ovule

The ovary is the enlarged portion of the pistil found at the base of the pistil. It contains the eggs or ovules.  After fertilization, the ovary develops into the fruit and the ovules become seeds. Based on where the ovary of a plant is located, a plant can be classified as having a superior ovary, an inferior ovary or a half-inferior ovary.

Answer:

Constante de resorte, k = 19.745 N/m

Explanation:

Dados los siguientes datos;

Masa, m = 2 kg

Periodo, T = 2 segundos

Para encontrar la constante del resorte, k;

\( Period, \; T = 2 \pi \sqrt {\frac {m}{k}} \)

Dónde;

Haciendo k el tema de la fórmula, tenemos;

\( k = \frac {(2 \pi )^{2}m}{T^{2}} \)

Sustituyendo en la fórmula, tenemos;

\( k = \frac {(2 * 3.142)^{2} * 2}{2^{2}} \)

\( k = \frac {6.284^{2} * 2}{4} \)

\( k = \frac {39.49 * 2}{4} \)

\( k = \frac {78.98}{4} \)

Constante de resorte, k = 19.745 N/m

The following are the differences of human and frog digestive systems:

1. Humans possess stable teeth which they use for chewing while frogs do not possess stable teeth to grip their prey.

2. Chewing for humans is an automatic digestion while frogs do not chew their prey but swallow it instead.

3. Humans possess only a set of teeth while frogs possess two sets of teeth.

4. Human's tongue is inclined behind the mouth while the frog's tongue is inclined to the opening of the mouth.

5. Humans possess a lengthy small intestine while the frog possess a more concise small intestine.

6. The expulsion of undigested food in human is through the rectum while in frog, it is through the cloaca.

When hair gets wet, the hydrogen bonds between keratin molecules in the hair are broken. These bonds are weak and temporary, but they help to maintain the shape and structure of the hair.

Other types of bonds between keratin molecules, such as disulfide bonds and salt bonds, are not typically affected by water. Disulfide bonds are strong and permanent, and they give hair its strength and elasticity. Salt bonds are also relatively strong, and they help to maintain the shape of the hair.

However, both types of bonds can be broken down by chemical treatments, such as hair relaxers or perms. In contrast, the hydrogen bonds broken by water can be re-formed when the hair dries, which is why hair often returns to its original shape after it has been wet.

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The complete question is:

What types of keratin links or bridges are altered when hair gets wet?

Answer:

4: DNA is found in the nucleus of the cell

5: cell

6: A person has 23 pairs of chromosomes

7: Chromosomes, genes, DNA are different names for different parts of THE SAME thing

8: the genes that determine what you look like came from your PARENTS

9: the reproductive cells called SPERM AND EGGS each contain only 1/2 of the genes needed to make a person

10: All living things have the same genetic CODE

11: ATCG combine in different patterns to form different CHEMICALS

12: Each species has a different BLUEPRINT, but the same kind of DNA molecule

13: A(n) HORSE has 64 chromosomes

14: A chromosome can only be seen by using a MICROSCOPE

Answer:

The chemical formula for carbohydrate is carbon, oxygen and hydrogen, the number of atoms varies on what carbohydrate. Carbohydrate general formula is CnH2nOn" e.g: Glucose - C6H12O6. Carbohydrates consist of the elements carbon, hydrogen and oxygen with a ratio of hydrogen twice that of carbon and oxygen...

Explanation:

Answer:

The second choice.

Explanation:

The river moves faster which brings in more soil and dirt from the banks which is where A is located.

Answer:

A

Explanation:becasue the water is faster ,so ebertyime there’s an explosion the Easter just carries the particles away.

Answer:

A genome is a complete set of dna(genetic information) and contains all of an organisms genes.It is found in the nucleus.

see the file attached!o(〃＾▽＾〃)o

The follicle ruptures which releases the ovum into the fallopian tubes. The follicle then turns into a corpus luteum.

Answer:

Most precious stones are pure substances. Simply, a pure substance is a substance which is composed by molecules or directly by atoms of only one kind.

Explanation:

Diamond is a pure substance because it is directly made up of carbon atoms. Salt water is not because it contains sodium chloride and water.Jan 3, 2013

The two cell types that primarily depend on glucose for ATP generation are neurons in the brain and erythrocytes.

Glucose serves as a vital source of energy for various cells in the body. However, neurons in the brain and erythrocytes rely heavily on glucose for ATP generation.

Neurons in the brain require a constant supply of energy to maintain their essential functions, such as transmitting electrical impulses and supporting synaptic connections. While neurons can use other energy sources, such as ketone bodies during periods of fasting or starvation, glucose remains their primary fuel source. Glucose is efficiently metabolized through glycolysis and oxidative phosphorylation in neurons, generating ATP to power their high energy demands.

Erythrocytes, or red blood cells, lack mitochondria, which are responsible for ATP production through oxidative phosphorylation. As a result, they rely solely on anaerobic glycolysis to generate ATP. Glucose is metabolized in the cytoplasm of erythrocytes to produce ATP, which is crucial for maintaining their membrane integrity, facilitating gas exchange, and ensuring proper oxygen delivery to tissues.

Neurons in the brain are highly specialized cells that require a constant supply of energy to carry out their complex functions. Glucose is the preferred fuel source for neurons due to its efficient metabolism and availability in the bloodstream. While neurons can use other energy substrates, such as ketone bodies derived from fatty acids, glucose remains their primary choice for ATP generation.

Erythrocytes, on the other hand, lack mitochondria, which are the primary sites for oxidative phosphorylation and ATP synthesis. Without this energy production machinery, erythrocytes rely solely on anaerobic glycolysis to meet their energy demands. Glucose is metabolized through glycolytic pathways within the cytoplasm of erythrocytes, leading to the production of ATP. This ATP is crucial for maintaining the structural integrity of erythrocytes and enabling them to carry out their essential functions, such as oxygen transport and carbon dioxide removal.

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Answer:

Because glucose is used by plants for energy and to make other substances like cellulose and starch. Cellulose is used in building cell walls. Starch is stored in seeds and other plant parts as a food source. That's why some foods that we eat, like rice and grains, are packed with starch.

Explanation:

Sugars facilitate the assimilation of nutrient elements and their transport by the plant since they reduce osmotic pressure, thus improving their entry into plant tissues. During vegetative development, transport takes place towards the stem and root tips.

Answer:

the sympathetic nervous system

Explanation:

Sedimentary rock materializes as a geological formation arising from the aggregation of sediments, comprising fragments of rock, minerals, and organic substances.

Igneous rock, on the other hand, emerges as a geological specimen crafted through the process of cooling and crystallization of molten rock, referred to as magma or lava.

Magma lurks beneath the Earth's crust, while lava represents the molten rock that has spewed onto the surface. The classification of igneous rocks depends on their texture, elucidated by the dimensions of the crystals embedded within the rock.

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Complete question:

Define:

First 1 sedimentary

second 1 is igneous

Answer:

Betrayal - Judas Iscariot, one of Jesus' disciples, betrayed Jesus by leading the Roman authorities to him in exchange for 30 pieces of silver.

Crucifixion - The Roman method of execution in which the condemned person is nailed or tied to a cross and left to die.

Redemption - Jesus' death on the cross is believed by Christians to have paid the price for the redemption of humanity's sins.

Sacrifice - Jesus' death is seen as a sacrifice for the sins of humanity.

Atonement - Through his death, Jesus is believed to have made atonement for the sins of humanity.

Forgiveness - Jesus' death is seen as a means of obtaining forgiveness for sins.

Victory - Christians believe that through his death and resurrection, Jesus achieved victory over sin and death.

Suffering - Jesus suffered a great deal of physical and emotional pain during the events leading up to and including his crucifixion.

Triumph - Jesus' resurrection is seen as a triumph over death.

Salvation - Jesus' death is believed to have made salvation possible for humanity.

The central idea of the passage is focused on the potential devastation caused by mountain pine beetles on lodgepole pine forests, and the urgent need for collaboration among multiple organizations to prevent the infestation from wiping out the trees. Option C is correct.

The passage does not mention the Wilder-Highlands project (option A) or entomologist Amy Lockner's experience (option B). Option D mentions the efforts of the Colorado Forest Service and the Forest Service to remove trees, but it does not capture the central idea of the passage as comprehensively as option C, which highlights the threat to lodgepole pine forests and the importance of collaborative action to address the infestation quickly.

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Complete Question:

Select the correct answer. What is the central idea of the passage?

OA. The Wilder-Highlands project will continue to be a successful model of stewardship for all other forest health projects in the country.

OB. Entomologist Amy Lockner has years of experience studying and identifying the damaging impact of the mountain pine beetles on forests.

OC. The lodgepole pine will be wiped out by the mountain pine beetles unless multiple organizations work together to stop the infestation quickly.

OD. The Colorado Forest Service and the Forest Service are trying to remove the dead, dying, and at-risk trees from the outbreak areas in Gunnison.

The factor that may have caused this competition is the scarcity of food.

Natural selection has to do with the idea that species that are better adapted to their habitat live longer and have the opportunity to reproduce and transfer these favorable traits.

The factor that may have caused this competition is the scarcity of food. The original ground-dwelling frogs have different genetic make up which allowed then to live in different conditions ultimately making it possible for them to adapt to various conditions.

Different species of frogs developed as they lived in different niches because the organisms had to develop traits that enable them to survive in new niches which were passed on to offspring ultimately leading to the emergence of new species.

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Answer:

Homeostasis

Explanation:

we learned this in class last year hope it helped!!

The ability to preserve a consistent internal environment throughout the face of changing external variables would be known as Homeostasis.

Homeostasis would be any identity-regulating mechanism throughout which an item or identity preserves consistency whilst also changing to the optimal circumstances for survival.

Whenever homeostasis seems to be effective, things will continue; since it is not, this same creature suffers a calamity as well as dies.

Thus the above approach is correct.

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Answer:

Acute disease develop suddenly and last a short time while chronic disease develop slowly and last for an extended period of time.

Explanation:

Acute disease come rapidly and are accompanied by symptoms that require short term care and therefore get better once treated.

chronic disease are slower to develop and may progress over time hence have many warning signs or no signs .

The DNA repair system that is affected in patients with xeroderma pigmentosum is nucleotide excision repair (NER), option C.

Xeroderma pigmentosum is a rare genetic disorder characterized by extreme sensitivity to ultraviolet (UV) radiation from sunlight. Individuals with this condition have mutations in genes involved in the NER pathway, which is responsible for repairing UV-induced DNA damage.

NER is specifically involved in the removal of bulky DNA lesions, such as those caused by UV radiation. Defects in NER result in the accumulation of DNA damage and an increased risk of skin cancers and other UV-induced abnormalities in affected individuals.

So, option C is the correct answer.

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Answer:

hydrogen

Explanation:

True statement 1: Adults with chronic kidney disease often experience wasting and protein-energy malnutrition (PEM). Chronic kidney disease can lead to inadequate nutrient intake, impaired nutrient absorption, and increased nutrient losses, resulting in weight loss and malnutrition.

True statement 2: Dialysis is a treatment for kidney failure, and it does remove excess fluids and waste products from the blood through the process of diffusion, osmosis, and ultrafiltration. These principles allow for the removal of waste molecules and excess fluid by creating concentration gradients and utilizing semi-permeable membranes.

True statement 3: Insufficient oxygen and nutrients reaching the heart muscle can cause a myocardial infarction, commonly known as a heart attack. Blockage or reduced blood flow to the coronary arteries can lead to ischemia, resulting in damage or death of heart tissue.

True statement 4: Recovery from kidney injury may involve a period of increased urine production called diuresis. During this phase, careful monitoring of the patient's fluid status is important to prevent dehydration or fluid overload, as the kidneys may temporarily have altered fluid regulation.

All four statements are true and provide accurate information about chronic kidney disease, dialysis, myocardial infarction, and kidney injury recovery.

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Because organisms absorb pesticides at a rate greater than that at which the chemical is lost, human use of pesticides to control insect pests introduces toxic chemicals into the food chain. The term pesticide pollution can be used to describe this situation

Soil, water, turf, and other vegetation can be tainted by pesticides. Pesticides can be harmful to a wide range of other organisms, including fish, beneficial insects, non-target plants, and insects and weeds. Pesticide drift occurs when pesticide particles that are suspended in the air are carried by the wind to other locations and may contaminate them.

Pesticides can significantly reduce, alter the behavior of, or eradicate populations of plants and animals, in addition to their direct toxicity. A trophic cascade, also known as a cascade up and down food chains, can result from these effects. One easily understood example of ecosystem-mediated pesticide effects is a trophic cascade.

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Answer: I think It is bacteria

The modification that is most likely to alter the rate at which a DNA fragment moves through a gel during electrophoresis is increasing the length of the DNA fragment, option C is correct.

During electrophoresis, DNA fragments migrate through a gel matrix based on their size and charge. Longer DNA fragments experience more resistance from the gel matrix and migrate slower than shorter fragments.

Altering the nucleotide sequence without changing the length, is less likely to affect the migration rate significantly as the charge and size of the fragment remain the same. Radioactively labeling specific bases, does not directly affect the fragment's size or charge and is unlikely to impact the migration rate. Leaving the length of the DNA fragment the same, would maintain the original migration rate, assuming other factors remain constant, option C is correct.

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The complete question is:

Which of the following modifications is most likely to alter the rate at which a DNA fragment moves through a gel during electrophoresis?

A. altering the nucleotide sequence of the DNA fragment without adding or removing nucleotides

B. radioactively labeling the cytosine bases within the DNA fragment

C. increasing the length of the DNA fragment

D. leaving the length of the DNA fragment the same

Epidermis or dermis related descriptions and their matches are: Connective tissue -Dermis Skin pigmentation -Epidermis Basal cells -Epidermis, Blood vessels -Dermis, Keratinocytes -Epidermis, Elastic and collagen fibers -Dermis, Sweat glands -Dermis, Arrector pili muscles -Dermis

The skin is an organ with two major layers: the epidermis and the dermis. The epidermis is the top layer of skin, whereas the dermis is the lower layer of skin. These two layers work together to protect the body from external influences and keep it hydrated.

Here are the matches between the descriptions and the layers: Connective tissue - Dermis, Skin pigmentation - Epidermis, Basal cells - Epidermis, Blood vessels - Dermis, Keratinocytes - Epidermis, Elastic and collagen fibers - Dermis, Sweat glands - Dermis, Arrector pili muscles - Dermis.

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