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Ilia_Sergeevich [38]
2 years ago
15

Which hormone is responsible for changes at puberty, particularly the development of the secondary sex characteristics in girls?

Biology
1 answer:
AlekseyPX2 years ago
6 0

The hormone responsible for secondary sex characteristics in females is estradiol. Also spelled oestradiol, it is one of three variations of the estrogen hormone found in a woman's body. It is a steroid hormone created by the body using cholesterol as a basic component. It is produced in the ovaries by granulose cells and is the predominant of the three estrogens for the majority of a woman's life.

Secondary sex characteristics are the physical characteristics caused by hormonal changes during puberty that are not directly related to reproduction despite being tangentially involved in the process. In women, this involves the growth of pubic hair, widening hips, breast development, and a change in the ratio of body fat to overall mass.

<h3>What is a Hormone ?</h3>

Hormones are chemical substances that act like messenger molecules in the body. After being made in one part of the body, they travel to other parts of the body where they help control how cells and organs do their work

Learn more about Hormones here:

brainly.com/question/28074452

#SPJ4

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What are some things that have contributed to increased global temperatures due to higher levels of carbon dioxide?
Arisa [49]
There are many lines of evidence which clearly show that the atmospheric CO2<span>increase is caused by humans.  The clearest of these is simple accounting - humans are emitting CO2 at a rate twice as fast as the atmospheric increase (natural sinks are absorbing the other half).  There is no question whatsoever that the CO2 increase is human-caused.  This is settled science.</span>
6 0
4 years ago
Which of the following are the reproductive parts of an angiosperm flower? A. anther and ovary B. sepal and anther C. vary and s
Simora [160]

The answer is A. anther and ovary.

The female part of an angiosperm flower is called a pistil and it consists of a style, stigma and ovary. The male part of an angiosperm flower is called a stamen and it consists of an anther and corolla. Thus, among all choices, choice A is the answer.

Choice B - anther is the male part of the flower, but sepal is a protective part of the flower and not reproductive.

Choice D - stigma is the female part of the flower, but sepal is a protective part of the flower and not reproductive.

Choice C - "vary" is not a word, but it is a mistake and it should be "ovary,"  the answers could be both choice A and C.


8 0
4 years ago
Reptiles are better suited to dry land than their amphibian ancestors because
Vaselesa [24]

Answer:

<u><em>All of the above.</em></u>

Explanation:

1. Their watertight skin minimizes moistures loss: <em>Reptiles have a reputation that they are “slimy” when we touch and hold them; however, they have dry skin, which has even fewer glands than mammals or amphibians. The main special feature of their skin is that the epidermis is heavily keratinized with a layer, which also prevents water loss.</em>

2. Amphibians must lay eggs in water or in moist soil to reduce moisture loss: <em>Because amphibian eggs don't have an amnion, the eggs would dry out if they were laid on the land, so amphibians lay their eggs in water.</em>

3. Reptile egg shells are harder than amphibians' eggs: <em>Reptile eggs are coated with a leathery or brittle coating, and the animals that hatch from them are miniature versions of the full-sized animal parent. In contrast, amphibian eggs are transparent and jelly-like. The animals that hatch from them still must go through metamorphosis.</em>

<u><em>Hope this helps you have a better understanding:) !!</em></u>

7 0
2 years ago
A reflex arc consists of
s2008m [1.1K]

Answer:

All of the above.

Explanation:

Reflex arc may be defined as the neural pathway that control the function of the reflex system of the body. Two main types of reflex arc are somatic reflex arc and autonomic reflex arc.

The afferent neuron carries signal from the receptors to the integrating center via the interneuron. The efferent neuron carries signal from the integrating center to the effector organ via the inter neuron.

Thus, the correct answer is option (e).

3 0
3 years ago
4. What other word from paragraph 2 most
sesenic [268]

Answer:

d

Explanation:

5 0
3 years ago
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