1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
White raven [17]
1 year ago
11

An atom with an electrical charge is a(n) ______. ion isotope radioisotope compound molecule

Biology
1 answer:
madam [21]1 year ago
4 0

Answer: An atom with an electrical charge is an <u>a. ion</u>.

You might be interested in
Under which circumstances should we try to control the population numbers of Pfiesteria?
zvonat [6]

Answer:

Pfiesteria species generally found in estuaries, the population of which are needed to be controlled only when they becomes toxic. Presence of large of fish triggers toxicity in Pfiesteria.

Explanation:

Pfiesteria are known to be associated with fish kills as for example large fish kill in the seas of North Carolina. It also causes blooming of algae in enormous numbers thus make the water bodies, hostile for survival of fishes and other marine lives. It affects human too by release of toxins in air and water often resulting in respiratory problems, infections of gastrointestinal system, headaches and fatigue. In this type of grave circumstances, leading to outburst of population of Pfiesteria, there is an urgent need to control.

8 0
3 years ago
Schools are looking for a balanced food option to serve their students.
denis-greek [22]

Schools have to give proper meals and carbohydrates to students.

<h3>What is a balanced diet?</h3>

A balanced diet is one that includes a variety of foods in the right amounts and ratios to meet the body's needs for calories, proteins, minerals, vitamins, and other nutrients. A small portion of the diet is also set aside for extra nutrients to last through the brief period of leanness. In this situation, we must choose a unique menu that offers the

In this context, we have to first prepare the list of the number of carbohydrates, lipids, and proteins and then we have to identify the maximum amount required in the meal. then observe the common food in the school.

Learn more about a balanced diet here:

brainly.com/question/10669660

#SPJ1

6 0
1 year ago
A) Compare and contrast diffusion, passive transport (diffusion &amp; facilitated), primary active transport and secondary activ
zheka24 [161]

Answer:

<u>Passive transport</u>: It does not need any energy to occur. Happens in favor of an electrochemical gradient. Simple diffusion and facilitated diffusion are kinds of passive transport.

<u>Simple diffusion</u>: molecules freely moves through the membrane.

<u>Facilitated diffusion</u>: molecules are carried through the membrane by channel proteins or carrier proteins.

<u>Active transport</u> needs energy, which can be taken from the ATP molecule (<u>Primary active transport</u>) or from a membrane electrical potential (<u>Secondary active transport</u>).

Explanation:

  • <u>Diffusion</u>: This is a pathway for some <em>small polar hydrophilic molecules</em> that can<em> freely move through the membrane</em>. Membrane´s permeability <em>depends</em> on the <em>size of the molecule</em>, the bigger the molecule is, the less capacity to cross the membrane it has. Diffusion is a very slow process and to be efficient requires short distances and <em>pronounced concentration gradients</em>. An example of diffusion is <em>osmosis</em> where water is the transported molecule.
  • <u>Facilitated diffusion</u>: Refers to the transport of <em>hydrophilic molecules</em> that <em>are not able to freely cross the membrane</em>. <em>Channel protein</em> and many <em>carrier proteins</em> are in charge of this <em>passive transport</em>. If uncharged molecules need to be carried this process depends on <em>concentration gradients</em> and molecules are transported from a higher concentration side to a lower concentration side. If ions need to be transported this process depends on an <em>electrochemical gradient</em>. The <em>glucose</em> is an example of a hydrophilic protein that gets into the cell by facilitated diffusion.

<em>Simple diffusion</em> and <em>facilitated diffusion</em> are <u>passive transport</u> processes because the cell <u><em>does not need any energy</em></u> to make it happen.

  • <u>Active transport</u> occurs <em>against the electrochemical gradient</em>, so <u><em>it does need energy to happen</em></u>. Molecules go from a high concentration side to a lower concentration side. This process is always in charge of <em>carrier proteins</em>. In <u>primary active transport</u> the <em>energy</em> needed <em>comes from</em> the <em>ATP</em> molecule. An example of primary active transport is the <em>Na-K bomb</em>. In <u>secondary active transport</u>, the<em> energy comes from</em> the <em>membrane electric potential</em>.  Examples of secondary active transport are the carriage of <em>Na, K, Mg metallic ions</em>.
7 0
3 years ago
__________________ are the first organisms to live in an uninhabited area.
Alla [95]
Pioneer species are the first organisms to live in an uninhabited area.
8 0
3 years ago
Read 2 more answers
The moth species Biston betularia has two color morphs, or variants. One has a speckled white and black color, while the other i
Oksana_A [137]

Answer:

D. Changes in the environment changed each morph's ability to evade predation in different ways.

Explanation:

The moth species<em> Biston betularia</em> has two color morphs, or variants. One has a speckled white and black color, while the other is all black. Over the period of time, the distribution of moths dramatically changed between 1900 and 1950 in such a way that black morph became dominant but speckled morphs became very much declined in abundance. The reasons behind this change was heavy industrial pollution in UK between 1900 and 1950.

When the environment became very polluted, dark and blackish, the speckled moth had more chanced of getting eaten by predators thats why they declined in number  as compared to black morphs. On the other hand, backgrounds of grime and soot made black morphs less visible to the predators and they survived well. This is an excellent example of natural selection that only those specie better survive that have the ability to cope better with adverse environmental fluctuations.

Therefore, option D is best option.

Hope it help!

8 0
3 years ago
Other questions:
  • The more oxygen the muscles receive, the more energy you have.
    13·1 answer
  • Is mRNA a carbohydrate gene or chromosome
    9·1 answer
  • Give three reasons how ionic and covalent bonds are different
    9·2 answers
  • A research team needs an antibody that binds to a protein of interest so that protein expression can be monitored. They use epit
    14·1 answer
  • What is the role of photosynthesis and respiration not gases in our atmosphere
    10·1 answer
  • Which part of a fungus releases digestive chemicals and then absorbs pieces of food?
    5·2 answers
  • Which of the following types of information is most closely associated with the concept of "Labeled Line Code."
    8·1 answer
  • A molecule that can be used as a molecular clock has a neutral mutation rate of one mutation per 20 million years. How many year
    15·2 answers
  • Amy gets up from this her seat on a train to move closer to the front just as she begins to walk forward the train stops at a st
    9·1 answer
  • Gentoo penguins present a potential mate with a pebble. Emperor penguins have a specific call and movement that they make to att
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!