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3 years ago

4. Molecules that pass through cell membranes by facilitated diffusion include

Biology

1 answer:

nata0808 [166]3 years ago

7 0

Answer:

E. Large molecules

Explanation:

Large molecules cannot pass through the membrane without help they are too big. This is because the membrane is very selective with what it let enters.

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What kind of atom tends to lose one electron?

Arturiano [62]

<span>an atom with a single electron in its outermost shell</span>

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1.Identify the role of endocrine glands in growth/development, and in regulation of metabolism.

DIA [1.3K]

In this question we are going to answer a series of questions about the human endocrine system, hormone release and homeostasis.

<h3>What is human endocrine system, hormone release and homeostasis?</h3>

1. Endocrine glands produce hormones and release them directly into the bloodstream.

Hormones are the products of secretion from the endocrine glands. They control various activities in the human body, hence the importance of these glands.

2. It is through the feedback mechanism that, for example, the regulation of hormone secretion and the control of temperature and blood pressure occur.

Thanks to this control, it is possible to guarantee the harmony of the systems and, consequently, the homeostasis (balance of the internal environment).

3. Hormones can be divided into four groups, based on their chemical structure,form of synthesis and storage, solubility, half-life, form of transport, receptors on cell and mechanism of action:

Peptides
Steroids
Amines
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Both positive and negative feedback are extremely important for our body to function properly. However, these two mechanisms have differences. In negative feedback, the body produces a response that reduces the initial stimulus, while in positive feedback, the response reinforces the stimulus.

Learn more about Hormones in brainly.com/question/13020697

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2 years ago

When an atom that has no change loses two electrons, it becomes a ?

densk [106]

Question: When an atom that has no charge loses two electrons, it becomes a:

A: positive ion.

B: negative ion.

C: positive isotope.

D: negative isotope.

Answer:

When an atom that has no change loses two electrons, it becomes "positive ion".

Explanation:

It is known that electrons hold a negative charge. So, when the negative charge that is electrons are taken out an atom then the number of electrons become less in number as compared to the number of protons. Hence, the atom attains a positive charge.An isotope is formed when an atom shows same number of protons and different number of neutrons. So, when an atom loses 2 electrons there will be no change in the number of neutrons. Therefore, an isotope will not form.Thus, it is concluded that when an atom with no charge loses two electrons, it becomes a positive ion.

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3 years ago

How can electron transport be described

mario62 [17]

The electron transport chain is a chemical reaction where electrons are transferred from a high-energy molecule to a low-energy molecule. These reactions can be used to convert energy from sunlight in photosynthesis or extract energy from sugars in respiration.

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3 years ago

Identify one possible air pressure at the center of the low-pressure system.

sineoko [7]

High in the atmosphere, air pressure decreases. ... A low pressure system has lower pressure at its center than the areas around it. Winds blow towards the low pressure, and the air rises in the atmosphere where they meet. As the air rises, the water vapor within it condenses, forming clouds and often precipitation.

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