gibberellin stimulates the production of α-amylase in germinating seeds, an enzyme that converts ______ into ______.

In each of the two daughter cells, cell division resumes during telophase II, resulting in the building of four daughter cells. Each of these four daughter cells is haploid because it has 23 chromosomes. None of the four cells are identical.

The two forms of HIV resistance that exist are caused by a genetic mutation known as CCR5-delta 32. CCR5-delta 32 hampers HIV's capacity to invade resistant cells. The change influences the CCR5 co-receptor outwardly of cells to create more modest than expected and never again sit beyond the cell.

Homozygous transporters of the Delta32 change are impervious to HIV-1 disease in light of the fact that the change forestalls practical articulation of the CCR5 chemokine receptor ordinarily utilized by HIV-1 to enter CD4+ White blood cells

The CCR5 is a chemokine receptor that fills in as a co-receptor for HIV-1 connection and passage to T lymphocytes. A 32bp cancellation (∆32) in this quality is accepted to be related to protection from contamination and postponing illness movement.

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Answer:

Wind, water, and ice erode can shape the land.

Explanation:

Volcanic activity and earthquakes alter the landscape in a dramatic and often violent manner. And on a much longer timescale, the movement of earth's plates slowly reconfigured oceans and continents. Each one of these processes plays a role in the Arctic and Antarctica.

Besides temperature change in the atmosphere, here are three additional evidences that the climate is currently changing:

1. Changing precipitation patterns: Climate change is causing shifts in rainfall and snowfall patterns. Some regions are experiencing increased rainfall and more intense storms, leading to flooding and increased risk of landslides.

Other areas are facing more frequent and severe droughts, resulting in water scarcity and negative impacts on agriculture.

2. Rising sea levels: As a result of global warming, melting glaciers and ice sheets, along with the thermal expansion of seawater, are causing sea levels to rise.

This phenomenon poses significant threats to coastal communities, leading to increased coastal erosion, saltwater intrusion into freshwater sources, and heightened vulnerability to storm surges and flooding.

3. Melting ice and shrinking glaciers: The warming climate is causing significant ice loss in polar regions and mountainous areas. Arctic sea ice extent has been decreasing over the years, impacting ecosystems and the habitats of various species.

Similarly, glaciers worldwide are retreating at an accelerating rate, affecting water supply in regions dependent on glacial meltwater.

These are just three examples of the numerous observable changes occurring as a result of climate change.

Other evidence includes shifts in ecosystems and biodiversity patterns, changes in ocean acidity, and alterations in the timing of natural events such as flowering and migration patterns.

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Answer: true

Explanation: Sometimes, a subset of muscle fibers is activated, depending on how much force is needed. When the muscle is stimulated, calcium ions are released from its store inside the sarcoplasmic reticulum, into the sarcoplasm (muscle ). ... The SR is smaller and less elaborate, and stores less calcium ions.

One important experimental strategy in deciphering the genetic code is analyzing the sequence of RNAs produced from known DNA sequences.

To decipher the genetic code, scientists have employed various experimental strategies. One of these strategies involves analyzing the sequence of RNAs produced from known DNA sequences. This approach allows researchers to examine the RNA molecules that are synthesized based on the DNA template.

By comparing the RNA sequences with the corresponding DNA sequences, scientists can identify the specific codons that code for different amino acids. This process helps in understanding the relationship between the genetic information stored in DNA and the resulting proteins.

By analyzing the RNA sequences, researchers can deduce the rules governing the genetic code and decipher the specific codons that correspond to each amino acid.

This experimental strategy has played a crucial role in unraveling the fundamental principles of molecular biology and has contributed to our understanding of how genetic information is translated into functional proteins.

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18. b

19. c

20. f

21. e

22. d

23. c

24. f

25. a

Answer:

Kreb cycle is the sequence of reactions by which most living cells generate energy during the process of aerobic respiration. It takes place in the mitochondria, using up oxygen and producing carbon dioxide and water as waste products, and ADP is converted to energy-rich ATP.

Explanation:

Definition:

A cycle of reactions catalyzed by enzymes in which the pyruvate derived from nutrients and converted to Acetyl Coenzyme A is completely oxidized and broken down into carbon dioxide and water to produce high-energy phosphate compounds, which are the source of cellular energy.

In eukaryotes, the Krebs cycle reactions take place in the mitochondrial matrix, a dense solution that surrounds the mitochondria crests: in addition to water, the matrix contains all the enzymes necessary for the biochemical reactions of the cycle, coenzymes, and phosphates.

Equation:

The overall reaction for the citric acid cycle is as follows: acetyl-CoA + 3 NAD+ + FAD + GDP + P + 2H2O = CoA-SH + 3NADH + FADH2 + 3H+ + GTP + 2CO2.

Hope this helps you.

Answer:

-47

Explanation:

Answer:

if humidity increases, the space in air will be less and so the transpiration rate will decrease and vice versa, as they are inversely proportional.

Answer:

We do not let it happen we always end stopping the process.

Explanation:

Answer:

Balanced

Explanation:

Since the person is going at a constant speed (not disturbed by an unbalanced force), and the movement does not stop this is an example of a balanced force.

Answer:

El Niño refers to the above-average sea-surface temperatures that periodically develop across the east-central equatorial Pacific. It represents the warm phase of the ENSO cycle. La Niña refers to the periodic cooling of sea-surface temperatures across the east-central equatorial Pacific.

Explanation:

Answer: charge

Explanation: because once the charge is there it takes over for the rest of them

Native species are species that are native to a particular ecosystem. Indicator species are tools for understanding and managing the health of ecosystem. Invasive species are non-native species that have been introduced to a new environment.

Examples of native species in a tropical rainforest include the red maple tree, which is native to eastern North America and is an important source of food and shelter for many species of animals, and the eastern gray squirrel, which is native to North America and is an important seed disperser in many forests. All other examples also given below.

These species have evolved in response to the specific environmental conditions of the ecosystem and have developed unique adaptations to survive in that environment.  When discussing species in a tropical rainforest, it is important to consider whether they are invasive, indicator, or native species.

Invasive species are non-native species that have been introduced to a new environment and have the ability to outcompete native species for resources. Invasive species can cause significant harm to the ecosystem by altering the balance of species and disrupting the natural processes that maintain the ecosystem.

Some examples of invasive species in a tropical rainforest include lionfish, which are native to the Indo-Pacific but were introduced to the Atlantic Ocean and have become a invasive species there, and kudzu, which is native to Japan but was introduced to the United States.

Indicator species are species that can be used to indicate the health of an ecosystem. These species can be used to monitor changes in the ecosystem over time and to identify potential threats to the ecosystem. For example, the tiger swallowtail butterfly is an indicator species in a tropical rainforest because it is sensitive to changes in the environment and can be used to monitor the health of the ecosystem.

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If bacteria were completely removed from soil plants would not be able to produce sufficient proteins and is denoted as option C.

This is referred to a type of micro organism which are present in the soil and help in the fixation of nitrogen so a to enable plants absorb them.

They are referred to as nitrogen fixing bacteria and an example is Rhizobium. Nitrogen is  a key component of protein which is why its absence will lead to plants not produce sufficient proteins.

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The following are indications of a rupturing aortic aneurysm:

a) Constant, intense back pain

c) Decreasing blood pressure

d) Increasing hematocrit

Rupturing of an aortic aneurysm can lead to severe symptoms and potentially life-threatening complications. Constant, intense back pain is often reported by individuals experiencing a rupturing aortic aneurysm. This pain may radiate to the abdomen or groin.

A rupturing aortic aneurysm can cause a sudden drop in blood pressure (hypotension), which is characterized by a decreasing blood pressure reading. This can be due to internal bleeding and loss of blood volume.

In response tob, there may be an increase in hematocrit, which is the percentage of red blood cells in the blood. Increasing hematocrit indicates a higher concentration of red blood cells due to blood loss.

Therefore, the correct answers are:

a) Constant, intense back pain

c) Decreasing blood pressure

d) Increasing hematocrit

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The inheritance pattern of pods color in pea plants is complete dominance. H0m0zyg0us dominant and heter0zyg0us plants have green pods. Option C) A, C, and D.

When the dominant allele completely masks the recessive allele, we talk about complete dominance.

This is the case of individuals that are heter0zyg0us for a particular gene and express the dominant trait. The dominant allele is hiding the expression of the recessive allele.

When you cross an individual who is h0m0zyg0us dominant with an individual who is h0m0zyg0us recessive, the whole progeny among the first generation -F1- will express the dominant phenotype since they are heter0zyg0us for this trait.

However, if you let individuals from the F1 cross with each other, the second generation -F2- will be composed of individuals expressing the dominant and the recessive phenotypes. This is because some individuals are h0m0zyg0us recessive and can express the recessive trait.

According to this information, and based on the attached flowchart, we can assume that,

Since the F1 is completely gray, we can assume this color identifies the dominant phenotype (green pods).

The cross was performed between plants with yellow and green pods, so they must be h0m0zyg0us individuals (dominant and recessive) and the whole F1 must be heter0zyg0us for the trait. So,

A ⇒ h0m0zyg0us dominant because it is gray ⇒ green pods

B ⇒ h0m0zyg0us recessive because it is white ⇒ yellow pods

C ⇒ heter0zyg0us because it is gray and the product of A x B ⇒ green pods

Now, the F2 is composed of D and E which represent plants with yellow and green pods. This means that there are h0m0zyg0us recessive individuals, and the recessive trait -yellow pods- can be expressed again among the second generation.

D ⇒ h0m0zyg0us dominant and heter0zyg0us ⇒ green pods (gray square)

E ⇒ h0m0zyg0us recessive ⇒ yellow pods (white square)

Now,  the phrase "Green pods" should appear i all gray squares. These are A, C, and D.

Option C is correct. A, C, and D only.

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Answer:

C) A, C, and D.

Explanation:

Two major group of vascular seed plants are considered as gymnosperms and angiosperm have differences in their evolution time and formation.

Angiosperm evolved after gymnosperm and considered as largest group which has most diversity within plantae kingdom.

Gymnosperm are more ancient and smaller as compared to angiosperm.

Angiosperm consist of plants that produce seeds that are protected by fruit whereas in gymnosperm seeds are not covered by fruits.

Major differences found in their evolution of seeds in angiosperm and gymnosperm. Seed are developed from ovaries of flower and protected by fruit in case of angiosperm. Whereas in plants of gymnosperm lack in fruit and flower formation.

Flower can be different in angiosperm but gymnosperm usually formed cones called strobili.

In angiosperm enormous variety of body type or form is found from annual herbs to climbing vines and massive trees. Whereas in gymnosperm consist of woody trees and shrubs.

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The presence of water in large amounts and distance from the sun are the properties beneficial to supporting life on Earth.

It is useful to classify the requirements for life on Earth as four items i.e. energy, carbon, liquid water, and different other elements. These are listed in along with the event of these factors in the Solar System. Earth and Life science accept the singleness. Earth is the only planet in the Solar system with properties.

Earth may be the only planet in the solar system which supports life. It is the mixture of life forms and their interactions with each other and with the rest of the environment that has made Earth unique.

So we can conclude that Earth supplies food, fuel, and fiber which provides shelter, and building materials.

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Matter can be moved from one ecosystem to another. In ecosystems, matter is constantly being cycled through various living organisms and their environments. This process involves the transfer of matter between different ecosystems.

The matter transfers through several means, such as migration of animals, water transport, or wind dispersal of seeds and spores. As animals migrate, they carry nutrients and elements within their bodies from one ecosystem to another, effectively transferring matter between locations. Similarly, water currents can transport nutrients and sediments from one aquatic environment to another, redistributing matter within ecosystems.

Wind plays a vital role in dispersing seeds and spores of plants and fungi, enabling them to spread and colonize new areas. This dispersal helps to move matter, as the seeds and spores contain the necessary nutrients and elements for the growth and development of new organisms.

Overall, the movement of matter from one ecosystem to another is an essential component of the dynamic nature of ecosystems, enabling the continuous cycling of nutrients and supporting the diversity of life on Earth.

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Answer:

Photosynthesis

Explanation:

yuh

The statement is true about epinephrine:

Epinephrine is a drug to treat very serious allergic reactions (anaphylaxis) due to insect bites, consumption of food or drugs, or exposure to other substances.

Pharmacologically, epinephrine or adrenaline works by stimulating the sympathetic nerves via alpha and beta-adrenergic receptors. This drug has a rapid onset and short duration of action when administered parenterally or intraocularly.

Its action on alpha-1 receptors causes vasoconstriction making it the drug of choice when hypotension due to septic shock occurs, especially because of its rapid onset (less than 5 minutes). Meanwhile, its action on beta receptors causes relaxation of bronchial smooth muscles, so this drug can also overcome tightness, wheezing, and bronchospasm in anaphylaxis.

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Answer:

B is the correct answer

Explanation:

4x10=40

Answer:

ions?

Explanation:

If it picks up or loses an electron, it becomes electrically charged and highly reactive. Such electrically charged atoms are known as ions. ... In an effort to achieve equilibrium, the atom emits particles in the form of radiation until the nucleus is stable. Such unstable atoms are said to be radioactive.

In order to calculate the chance of two parents heterozygous for 3 traits (rryytt) giving rise to an offspring that is homozygous dominant for all 3 traits, we need to understand the principles of Mendelian genetics.

Mendelian genetics describes how traits are passed down from parents to offspring through the transmission of genes. Each gene exists in two forms, called alleles, which can be either dominant or recessive. When an individual has two different alleles for a particular gene, they are said to be heterozygous for that trait. Conversely, when an individual has two identical alleles, they are homozygous for that trait.

In the given scenario, both parents are heterozygous for three different traits (rryytt). This means that for each trait, they possess both a dominant allele (represented by the capital letter) and a recessive allele (represented by the lowercase letter).

To determine the chance of the parents giving rise to an offspring that is homozygous dominant for all 3 traits, we need to calculate the probability of the specific combinations of alleles being passed on to the offspring.

Since both parents are heterozygous, there are multiple possible ways their alleles can combine to form the offspring's genotype. For each trait, there are two possible alleles the offspring can receive from each parent—either the dominant allele or the recessive allele.

The probability of the offspring being homozygous dominant for a single trait can be determined by using the Punnett square method, which is a graphical representation of the possible combinations of alleles from both parents. Since we have three different traits, we would need to create a Punnett square for each trait and then multiply the probabilities together to obtain the overall chance.

For simplicity, let's assume that each trait is independent and unrelated to the others. This assumption allows us to multiply the probabilities together. If this is not the case, then the probabilities calculated may not accurately reflect the real-world situation.

In each trait's Punnett square, the chances of getting the desired homozygous dominant offspring are as follows:

Trait 1 (rr):

- Parent 1: Rr

- Parent 2: Rr

- Possible offspring genotypes: RR, Rr, Rr, rr

- Chance of homozygous dominant offspring: 1/4 or 25%

Trait 2 (yy):

- Parent 1: Yy

- Parent 2: Yy

- Possible offspring genotypes: YY, Yy, Yy, yy

- Chance of homozygous dominant offspring: 1/4 or 25%

Trait 3 (tt):

- Parent 1: Tt

- Parent 2: Tt

- Possible offspring genotypes: TT, Tt, Tt, tt

- Chance of homozygous dominant offspring: 1/4 or 25%

To calculate the overall probability, we multiply the probabilities of each trait together:

Probability = Chance of Trait 1 * Chance of Trait 2 * Chance of Trait 3

= 1/4 * 1/4 * 1/4

= 1/64

Therefore, the chance of two parents heterozygous for 3 traits (rryytt) giving rise to an offspring that is homozygous dominant for all 3 traits is 1 in 64 or 1.56%.

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Answer:

It is B

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According to Chargaff's first rule, the number on guanine units roughly equals the amount of cytosine units, and the value of adenine units roughly matches the value of thymine units.

The ultimate ratio is 28% cytosine, 28% guanine, 22% adenine, and 22% thymine. Only RNA has uracil.

Watch your pronunciation. A chemical molecule that is utilized to create one of DNA and RNA's building components. It belongs to the pyrimidine class.

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explanation:

Cohesion enables the droplets to form, and bonding also called adhesion keeps the droplets on the needle .

Adhesion allows the droplets to form, and cohesion keeps the droplets on the needle.

so as you know Cohesion allows droplets to form and capillary action keeps the droplets on the needles where as Adhesion allows droplets to form, and capillary action keeps the droplets on the needles.

After an enzyme-catalyzed reaction has been completed, the products are released and the active site on the enzyme will return to its original shape.

Enzyme-catalyzed reactions are reactions that are catalyzed by enzymes. The rate of an enzyme-catalyzed reaction can be affected by the amount of enzyme present, the concentration of substrate, the presence of inhibitors or activators, temperature, and pH.

Enzymes are a type of protein that acts as a catalyst, which speeds up chemical reactions. Enzymes are highly specific, meaning that they will only catalyze one type of reaction. Enzymes have a specific shape called the active site, which binds to the substrate (the reactant in the reaction).

Once the reaction is complete, the products are released, and the enzyme returns to its original shape. This means that the active site is available to catalyze another reaction.

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Answer:

The reason that crickets chirp faster when it's warmer has to do with muscle contractions.