Bruhhhhh im so stuck!!!

Answer:

I have 2 answers. Not sure which one you were looking for.

Explanation:

1.Mutations in the HBB gene cause sickle cell disease. The HBB gene provides instructions for making one part of hemoglobin. Hemoglobin consists of four protein subunits, typically, two subunits called alpha-globin and two subunits called beta-globin. The HBB gene provides instructions for making beta-globin.

or

Sickle-cell anemia is the result of a change in a single nucleotide, and it represents just one class of mutations called point mutations.

Supernovas are tremendously luminous explosions that occur in a star when it is about to die releasing huge amount of energy, particles and radiation.

A supernova is an extremely bright explosion of a star which occurs when a star has reached the end of its life and after the intensity gradually dims and the star dies.

Explosions that occur in supernovas release very huge amounts of radio waves, X-rays, gamma rays and also cosmic rays.

There are two main types of supernovae; the type I and the type II supernovas.

Therefore, supernovas are tremendously luminous explosions that occur in a star when it is about to die.

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Answer:

D.

Explanation:

The independent variable is the variable that goes unchanged by the others

The evolutionary tree is not observed here but it is possible to answer this question by observing which nucleotide is found in the root of the node. It indicates the first substitution.

A phylogenetic evolutionary tree is a diagram used to show the evolution of a given taxonomic group (for example, a group of species).

It is possible to trace the evolution of a given taxon by tracing the nucleotide substitution observed from a common ancestor.

In an evolutionary tree, the root of the node is represented by the common ancestor and therefore the presence of a particular nucleotide (either T or C) in that position can be considered as the ancestral character.

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According to the mechanism of natural selection, explain how the change you described in Part A will occur. Thus, option "B" is correct.

"Adaptation of Insects"

The following that is an adaptation that would promote insect herbivory is the Insects evolve new taste receptors that trigger an avoidance reaction to the toxin.

Plants are regularly fed upon herbivorous creepy crawlies. to get security against such assaults plant has created a few instruments like generation of poisons and unstable substance that either slaughter the bother or pull in the normal adversaries of the creepy crawlies respectively.

Thus, the correct answer is B.

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Answer

ABA

Explanation:

It is believed that this mechanism, in situations of hydric stress, is controlled mainly by abscisic acid, a plant hormone known as ABA. This hormone binds to receptors in the membrane of the guard cells and promotes the entry of calcium ions (CA2+), which function as messengers when opening ionic channels. When these channels are opened, the chlorine(Cl-) and malate2- ions pass from the inside of the cell to the wall and open the K+ channels, causing the exit of this ion as well. This process causes the water to come out and the stomach closure occurs. When the ABA is released from the receiver, the ions that came out of the cytoplasm, together with the water, return to the inside of the cell, making it turgid. At this moment, the stomach opens.

Therefore, it is perceived that the ABA causes the stomatum to close, thus guaranteeing water savings. In environments with water stress, this mechanism guarantees the survival of the plant.

In addition to water stress, several factors directly affect the opening and closing of the ostyolus, such as the concentration of carbon dioxide, light, temperature and water loss. It is also worth mentioning that the stomata also open and close at circadian rhythms, that is, according to daily rhythms.

Answer:

carbon dioxide is what the plants take from the air to make glucose or sugar

The molecules that the plants pull from the air that is used to make sugar are carbon dioxide. The correct option is D.

Carbon dioxide is a gas that is present in the atmosphere at 0.03 %. This gas is a greenhouse gas. This gas warms the environment. The chemical formula of carbon dioxide is CO₂.

Carbon dioxide is released by animals as they respire. This is the gas they expelled out in respiration. But plants absorb this gas because plants perform photosynthesis and in photosynthesis, carbon dioxide is used.

This gas is pulled from the environment to perform photosynthesis by plants. Carbon dioxide reacts with water to form glucose.

The chemical reaction of photosynthesis

[tex]\rm CO_2 + 6H_2O \rightarrow C_6H_1_2O_6 + 6O_2.[/tex]

Thus, the correct option is D. Carbon dioxide.

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The chemical equation should be written in latex.

Answer: The correct answer is

No, because NaCl is Ionic

Explanation:

NaCl can pass through the cell membrane because it is Ionic and separates into Ionic components Na+ Cl+.

Cell membrane are phospholipids bilayers and have hydrophobic tails and face inside of the cells . The fatty acids tails are non polar and only non polar substances can pass through it but salts is a polar molecules because it is an ion and cannot pass.

Answer:

The rise and fall of the tides, which are driven by the gravitational attraction of the Sun and Moon on Earth's ocean are another cause of currents. ... The speed and direction of tidal currents are predictable. Tidal currents are the only type of current affected by the interactions of Earth, the Sun, and the Moon.

Explanation:

The potential benefit that beavers contribute to the ecosystem include sources of food and habitat for some animals.

This consists of all the organisms and the physical environment with which they interact.

The removal of the beavers will allow for more oxygen to be present within the ecosystem as a result of increased plant population.

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Answer:

it is A from the top

Explanation:

it on the top

Answer:

are a type of pluripotent stem cell that can be generated directly from a somatic cell.

Explanation:

Answer: A conjugated protein is a protein that functions in interaction with other chemical groups attached by covalent bonding or weak interactions.

Explanation:

Answer:

conjugate protein stands from protein molecule which combine with non-protein components known as prosthetic group.For an example,metalloprotein where the protein combined with metal and lipoproteins where the protein combines with lipid

Answer:

Plant and animal cells both undergo mitotic cell divisions. Their main difference is how they form the daughter cells during cytokinesis. … Plant cells don't have centrioles. Lastly, animal cells divide everywhere and all the time while plant cells divide in a specialized region called the meristems.

Answer:

It changes your life .

Explanation:

Puberty is when a child's body begins to develop and change as they become an adult. Girls develop breasts and start their periods. Boys develop a deeper voice and facial hair will start to appear. The average age for girls to begin puberty is 11, while for boys the average age is 12.

Answer:

the raven

Explanation:

octopus - intelligent but very antisocial with a short life span, meaning they most likely will not work with other octopuses to improve while also living in the ocean making it harder to build. (but could probably evolve to walk on land)

dolphin - smart but does not have thumbs to make tools and lives in the ocean meaning they have a disadvantage.

raven - intelligent, works with other ravens and sometimes even wolves, and has shown to make tools.

Answer:

The raven because it's ability to craft tools, social life involving hunting groups, intelligence, and wide variety of sounds (allowing potential language) give it the potential to evolve very well.  

Explanation:

Answer:

Organisms that are more adapted to their environment are more likely to survive and pass on the genes that aided their success.

Explanation:

hope this helps

Answer:

Peptide bonds

Within a protein, multiple amino acids are linked together by peptide bonds, thereby forming a long chain. Peptide bonds are formed by a biochemical reaction that extracts a water molecule as it joins the amino group of one amino acid to the carboxyl group of a neighboring amino acid.

Answer:

1- the sun

2-Plants performing photosynthesis convert carbon dioxide to organic carbon compounds using sunlight as a source of energy; these compounds go on to fuel nearly all other organisms in the ecosystem, from bacteria to animals.

3-The amount of energy at each trophic level decreases as it moves through an ecosystem. As little as 10 percent of the energy at any trophic level is transferred to the next level; the rest is lost largely through metabolic processes as heat.

Explanation:

1-Energy is all around us and comes from many sources. One of the most important sources of energy is the sun. The energy of the sun is the original source of most of the energy found on earth. We get solar heat energy from the sun, and sunlight can also be used to produce electricity from solar (photovoltaic) cells.

Hope this helps!

Answer:

1: it provides us with crops 2: gives more job opportunities

Answer:

well the caterpillar first digest it's self turning the soup into eyes, wings, antenna and other adult structures i'm sorry if i get it wrong for you

Explanation:

The reproductive cycle of the virus is lytic, because of the quick onset of symptoms after infection.

The reproductive cycle of a virus is the process that is used by a virus to replicate in order to be able to cause harm to a host after invasion.

There are two types of reproductive cycles and they include:

A virus that uses lytic reproductive cycle, has the ability to use the host cells to quickly manufacture more viruses which burst out of the cells leading to rapid onset of signs and symptoms of disease.

Therefore, the reproductive cycle of the virus is lytic, because of the quick onset of symptoms after infection.

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Answer:

Not sure the sequence can mean anything

Explanation:

Here is the sequence spaced out ATG CCA TGG CAT TGA

here it is translated to the mRNA sequence UAC GGU ACC GUA ACU

than a protein sequence TYR GLY THR VAL THR

Answer:

Yes.

Explanation:

There are two components to water potential: solute concentration and pressure. ... Can a solution with a molarity of 0.2 be in equilibrium with a solution with a molarity of 0.4? Two solutions will be at equilibrium when the water potential is the same in both solutions.

Answer:

I think other nourishment?

Explanation:

Answer:

1). Photosynthesis begins with light reactions. It is during these reactions that the energy from sunlight is absorbed by the pigment chlorophyll in the thylakoid membranes of the chloroplast.

2). The dark reactions of photosynthesis occur in the stroma of the chloroplast where they utilize the products of the light reaction. In the dark reaction, plants use carbon dioxide with ATP and NADPH from the light reactions to produce glucose.

3). The main factors affecting the rate of photosynthesis are light intensity, carbon dioxide concentration, and temperature.

Explanation:

Hope this helps

Answer:

They have no nucleus.