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3 years ago

Which atoms form ionic bond?

1 answer:

3 0

Ionic bonds form always form between a metal and a nonmetal, so the answer is D, Magnesium and Bromine.

Sodium is a metal, so a bond between two Sodium atoms will not be ionic.
Fluorine is a non-metal, so a bond between two will be covalent bond instead of an Ionic.
Magnesium and Lithium are both metals, so a bond will not be ionic.
On the other hand, Magnesium is a metal and Bromine is a non-metal, so a bond between them will be ionic.

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A musk ox and the Alstroemeria flower have physical structures and organs that have similar functions. Provide two examples of s

Levart [38]

Answer:

Multicellular organisms: Both the plant and the ox are made up of more than one cell.

Both the ox and the plant need to breath somehow (use air).

Explanation:

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2 years ago

Angiosperms do not need water for fertilization. Why? (3 points) Group of answer choices Flagellated sperm travel to the ovary i

astraxan [27]

Answer:

A pollen tube grows from the pollen grain into the ovary

Explanation:

Water is needed for fertilization in several plant groups because the sperm needs to swim to meet the non-motile eggs of the female organs.

<em>However in angiosperms, the pollen germinates and a structure known as pollen tube which contains the male gametophyte (sperm) grows into the ovary where the ovule is located and the male gametophyte is deposited in the ovule to initiate the fertilization process.</em>

<em>Hence, water is really not necessary for fertilization in the angiosperms.</em>

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3 years ago

Read 2 more answers

Some bacteria viruses parasites and fungi can cause an illness. these are known as?

yawa3891 [41]

Infectious diseases are disorders caused by organisms — such as bacteria, viruses, fungi or parasites.

<h3>What are viruses bacteria and parasites?</h3>

Viruses, bacteria, and parasites live organisms that are found all around us. they're in water and soil. they're on the surfaces of foods that we eat. they're also on surfaces that we touch, like Counter top in the bathroom or kitchen. Some bacteria sleep in and on our bodies and don't cause problems.

<h3>Which are infectious diseases?</h3>

The flu, measles, HIV, streptococcal sore throat , COVID-19 and salmonella are all samples of infectious diseases. Cancer, diabetes, congestive coronary failure and Alzheimer's disease are all examples of noninfectious diseases.

What are the causes of disease?

Similarly, diseases are caused by different microorganisms and may be classified as diseases caused by bacteria, fungi, viruses etc. Some diseases also are caused by multicellular organisms such as worms.

Learn more about infectious diseases :

brainly.com/question/14083398

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2 years ago

Addition, subtraction, multiplication, and division are all called ____.

Illusion [34]

Answer:

four basic operations of elementary arithmetic.

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3 years ago

WILL GET BRAINLIEST!!!

ICE Princess25 [194]

Answer:

<em>1. The characteristic thing about </em><em>adult frog breathing</em><em> is that </em><em>drawing in air by lowering their mouth floor</em><em> (option d).</em>

<em>2. The substance released by the </em><em>lung secretory cells </em><em>is the </em><em>surfactant </em><em>(option c).</em>

<em>3. The main divisions of the </em><em>peripheral nervous system</em><em> are the </em><em>somatic and autonomic systems</em><em>.</em>

Explanation:

<h3>1. Breathing of the adult frog</h3>

The adult frog - while out of the water - uses a nasal breath, propelling air into its throat and oral cavity. The air content in the frog's mouth causes the internal pressure of the cavity to increase, and the floor of the mouth is modified to allow the passage of air to the lungs.

Under water, the frog's breath is cutaneous, that is, through its skin.

Adult frogs do not have gills or respiratory muscles.

<h3 /><h3>2. Pulmonary surfactant </h3>

Pulmonary surfactant is a substance produced and secreted by the pulmonary epithelium, specifically by type II pneumonocytes. The function of the surfactant is to keep the pulmonary alveoli open to allow gas exchange.

The surfactant is a substance of a lipidic and proteic nature that helps reduce the surface tension of the water, which in the socket prevents closure when the air is exhaled.

Another function is to prevent the germs - viruses and bacteria - present in the air from passing from the alveolus to the bloodstream.

<h3 /><h3>3. Divisions of the peripheral nervous system</h3>

The peripheral nervous system is dependent on the central nervous system and is made up of all the nerves that go to each of the tissues and organs of the body. It is divided into somatic and autonomic nervous systems.

<u>Somatic nervous system</u> is composed of nerves that drive nerve impulses to skeletal muscles, being predominantly voluntary. The involuntary response in this system is due to the existence of reflex arcs, whose center of integration is the spinal cord.
<u>Autonomic nervous system</u> is responsible for the innervation of coughs the internal organs, allowing their function under the coordination of the central nervous system. It is an involuntary system and is subdivided into sympathetic and parasympathetic systems.

The integration of both systems, somatic and autonomic, allows a body to perform all its functions, including the function of relationship, alertness and maintenance of organic homeostasis.

Learn more:

Frog breath brainly.com/question/1341903

Pulmonary surfactant brainly.com/question/7303958

Central and peripheral nervous systems brainly.com/question/2156614

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3 years ago