HI, can someone help me plz.

Answer:

its 8

Explanation:

because if you have 9 apples a you eat on you are left whith 8

Protein are the vital part of any organisms as it helps in growth and repair. The statement that best describes the molecular structure of a protein is option B, i.e., It is a complex, folded chain that helps regulate cell processes.

Protein has four main structures, namely primary, secondary, tertiary and quaternary structure. It is a complex, folded chain that helps regulate cell processes.

Each structure differ from each other in the way of folding.

The folding of protein makes the protein active to determine its main functions.

Thus, the correct option is B.

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Answer:

Energy flow in an ecosystem is unidirectional. It means that energy which is absorbed by the producers from sun and is converted into chemical energy, always flow from a lower trophic level to a higher trophic level as in a food chain when herbivore consumes producers the energy is transferred from producers to consumers and so on. Some of this energy is assimilated some is used by the organism and some is dessipated in the environment but the flow of energy is never reverted, that is obviously a producer can not consume a consumer.

Answer:

The direct purpose of moving electrons down the electron transport chain is to pump protons (hydrogen ions) into the intermembrane space. This creates a chemiosmotic gradient that the cell uses to generate ATP by selectively allowing hydrogen ions to move back into the mitochondrial matrix.

Explanation:

If one took DNA samples from two strangers on a street, the two DNA samples will be 99.9% the same (option C).

DNA is the part of a living organism that carries or stores genetic information.

The DNA molecule is made up of four nucleotide bases namely;

However, the DNA of every living organism is the same with the difference lying in the arrangement of the nucleotide sequence.

Therefore, if one took DNA samples from two strangers on a street, the two DNA samples will be 99.9% the same.

The 0.1% difference is attributed to the mutations that might have occured in the genome.

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Answer

H2O

Explanation:

Water is made up of hydrogen atom ,valency 1 and oxygen atom , valency 2

On combining , they exchange their valencies giving H2O where 2 is a subscript

False When species come into contact with closely related species, they interbreed and become one species again.

What process lead to the speciation of the Galapagos finches on the different islands?

All of them grew  from one progenitor species, which inhabitated the islands only a few million years ago.

This process, whereby species develop rapidly to use empty ecospace, is called as adaptive radiation.

Thus, its false, When species come into contact with closely related species, they interbreed and become one species again since its an example of evolution.

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Answer:

nucleus

Explanation:

*please mark brainliest *

Answer:

D.) All of the above

Explanation:

Bacteria has become a major component in the processing of dairy products because of various factors. The distribution of bacteria aids factors like ripening and flavor development of cheese and curd and also aids fermentation.

Curd, cheese and butter production all involve the use of bacteria.

The bacteria commonly used to make curd is lactobacillus bacteria.

The bacteria commonly used to make cheese are lactococcus, lactobacillus and streptococcus genera

The bacteria commonly used to make butter are lactococcus and leuconostoc .

Answer:

probably a big spider

Explanation:

Explanation:

Carrier. Btw I don't need brainiest lol

Answer:

In North America, around June 21, Earth tilts on its axis toward the sun, which is Summer Solstice and when the Northern Hemisphere has the most daylight of any time of year. Winter solstice the Northern Hemisphere tilts the farthest away from the sun and when we have the least amount of daylight of any time of the year.

Explanation:

As Earth revolves around the Sun, it rotates on its axis. Sometimes Earth tilts toward the Sun which is when Summer occurs. In the Winter Earth tilts away from the Sun.

In the northern hemisphere summer solstice occurs when the earth north pole is tilted towards the sun, longest day and winter solstice when the earth north pole is tilted away from the sun shortest day . Thus both the option a and c are correct.

Solstices occurs when earth is pointed directly towards the sun. This incident happens twice a year during earth's orbit.

On June 21 the north pole is tilted 23.5 degree towards sun and the northern hemisphere experience summer solstices which is known as longest day of the northern hemisphere year.

On 21 June, the southern hemisphere is tilted 23.5 degree away from sun and southern regions of earth experience the shortest day of the year which is known as winter solstices.

Therefore In the northern hemisphere summer solstice occurs when the earth north pole is tilted towards the sun, longest day and winter solstice when the earth north pole is tilted away from the sun shortest day . Thus both the option a and c are correct.

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Answer:

Since strong sun exposure damages the body, the solution was to evolve skin that was permanently dark so as to protect against the sun's more damaging rays. Melanin, the skin's brown pigment, is a natural sunscreen that protects tropical peoples from the many harmful effects of ultraviolet (UV) rays.

Explanation:

Answer:

Self discipline

Explanation:

Answer:

Inside the brain, dopamine plays important roles in executive functions, motor control, motivation, arousal, reinforcement, and reward, as well as lower-level functions including lactation, sexual gratification, and nausea. The dopaminergic cell groups and pathways make up the dopamine system which is neuromodulatory.

Explanation:

Striatal dopamine release is mediated by vesicular exocytosis. Active zone-like sites are required for rapid and efficient dopamine secretion. Localized dopamine release generates signaling hotspots and is powerfully regulated. Some striatal dopamine release is independent of ascending action potentials.

Answer:

A gene is a section of a double-stranded molecule known as DNA. This molecule is found within the nucleus of the cell, contained in threadlike structures called chromatin. The two strands form a double helix linked by a series of paired bases. The base adenine is always linked to thymine and the base cytosine is always linked to guanine.

Answer:

The tourist strolled casually along the beach in bare feet

Explanation:

Answer:b

Explanation:

Answer:

A. They include a set number of steps to follow in order

Homologous structures

Answer:

Resources from the ocean are found i many regions, but the majority of all resources are located in which of the following regions? continental shelf.

Explanation:

Answer:

3!

Explanation:

Answer:

A. lipids

Explanation:

Answer:

Male with attached earlobes

Answer:

i  can't  the pic that well

Explanation:

Answer:b

Explanation: because if u look at its face it’s his system in his body