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Viktor [21]
3 years ago
9

The human menstrual cycle is controlled by hormones produced and secreted by the

Biology
1 answer:
alexgriva [62]3 years ago
5 0
Answer: pituitary gland
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Someone pls help me ill give out brainliest pls don’t answer if you don’t know
musickatia [10]
What do you need help on
4 0
3 years ago
During the process of photosynthesis,
TEA [102]

Answer:

d. less than 100% of the energy captured from sunlight is transformed into potential energy in the form of a hydrogen ion gradient and then into potential energy in the form of covalent bonds

Explanation:

Photosynthesis is process utilized by plants, several bacteria and protists to convert the light energy to chemical energy. So they utilize the photosynthesis as the powerhouse for the energy production. Heterotrophs like human that cannot synthesize their own food, use this converted form of energy by autotrophs.

During the light reaction of photosynthesis the photons from light are absorbed by photosystem I and II. These photons excites the electrons which flow through the electron transport chain from higher potential to lower potential. These electrons release the energy while moving from higher potential to lower potential which is utilized by H+ pump to pump the H+ to lumen of plastids from stroma and of course not the 100% energy is utilized some of the energy dissipates. . So this process causes the accumulation of high potential H+ ions across the membrane. These H+ ions are utilized for the production of ATP by ATP synthase complex when they flow back to lower potential across the membrane through ATP synthase complex.

The ATP and NADPH produced from light reaction are utilized to combine carbon molecules during dark reaction. The covalent bond is used to combine the carbon molecules and we know that combining carbon molecules stores energy in the form of covalent bond.

8 0
3 years ago
Read 2 more answers
Phosphorus (P) often occurs as a waxy solid in its natural state. Ifyou subdivide a piece of phosphorus until you have the small
ANTONII [103]

Answer:

An atom

Explanation:

An atom is defined as the smallest, indivisible unit of a substance.

Elements are defined as the simplest part of a substance that can no longer be broken down in a reaction.

<em>Elemental phosphorus is a substance and when a piece is subdivided until it becomes physically impossible to divide further, then it becomes an atom of phosphorus.</em>

The correct answer is atom.

4 0
3 years ago
why was the apple red in light? it has to include one of these words Reflection Refraction Waves Amplitude Frequency Energy Wave
gayaneshka [121]

Answer:

This happens due to both refraction and reflection. You're able to see the "red" on the apple because the light reflects off of it and into your eyes thus making the color visible.

5 0
3 years ago
The Competitive Exclusion Principle states that: Group of answer choices a. When two species occur together, competition is alwa
Reika [66]

Answer:

b. Two species that use a limited resource in the same way cannot coexist indefinitely

Explanation:

The competitive exclusion principle establishes that two or more species that share the same niche requirements,  in the same habitat, and are in biological competition for the same resources, won´t be able to coexist indefinitely in the same space if the other ecological factors are constant. This is because species with identical niches have the same necessities, which means that they will compete for the same resources. If these species have the same requirements, they can not coexist. When the superior competitor occupies the inferior competitor´s fundamental niche, the first species has advantages over the second species and <em>monopolizes all the resources</em>. From that moment, the inferior species is displaced and must adapt to use other resources changing its behavior, or must migrate to another area where it can get access to its needs or get extinct.

When <em>two competing species coexist</em>, this is because of niche partitioning or niche differentiation. One of the species uses a <em>different resource, occupies another area, or uses the resources at different times during the day</em>. If there is not any differentiation between them, the dominant species displaces the weak species.

Niche specialization might produce genotypic separation. Subpopulations of a species diverge into new species.    

So, <em>competitive exclusion refers to the exclusion of the inferior competitor by the superior competitor when there is not habitat differentiation, and both species can not share the same niche.    </em>

4 0
3 years ago
Read 2 more answers
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