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Musya8 [376]
2 years ago
11

A gas-like mixture with no definite volume or shape that is made up of positively and negatively charged particles is a ____. Qu

estion 8 options: gas liquid plasma solid
Biology
1 answer:
sesenic [268]2 years ago
6 0

Answer:

Gas

Explanation:

Gas has no definite shape and all.

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A human pancreatic cell obtains O2 and necessary molecules such as glucose, as amino acids, and Cholesterol from its environment
MatroZZZ [7]

Answer:

Cellular membranes or plasma membranes has many functions. Some of these include regulation of cellular transport, and responding to cellular signals or hormones.

<h2>Cellular Transport</h2>

The plasma membrane is made up of the <u>phospholipid bilayer with embedded transmembrane proteins</u>. This makes the cell membrane <u>semi-permeable</u>. Movements of substances depend on the composition of the molecules e.g. glucose and amino acids, as needed by the pancreatic cells. These are larger and uncharged molecules and can't pass freely through the membrane so they utilize the transmembrane proteins via attaching to carrier proteins. This is called <em>passive transport</em>. On the other hand, in <em>active transport</em>, <u>ATP is used</u> to transfer molecules, like Hydrogen, from a low to high electrochemical gradient.

Other kinds of cellular transport are:

  • Osmosis and diffusion
  • Endocytosis
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<h2>Cellular Signalling</h2>

The cell membrane is able to signal other neighboring cells by utilizing complex proteins. These proteins may take form as receptors or markers.

<h3>Membrane Receptors</h3>

They act as receivers of extracellular signals and spark intracellular processes. These receive signals from hormones, growth factors, etc.

<h3> Membrane Markers </h3>

These allow the cells to identify each other and respond if this cell is needs further development as in organ development, or a foreign body to the system.

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3 years ago
In a living organism, what is a tissue?
poizon [28]

the answer should be (.A.)

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3 years ago
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1. Which of the following is NOT a true property of water? * 1 point
GREYUIT [131]

The answer is B.

I think its safe to assume we all have had a cup of ice water. The ice always floats at the surface of the water.

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Which part of the cell theory most aligns with the process of Mitosis?
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Many species are introduced into new areas every day through ballast water and international shipping; however, not all of these
erica [24]

For a introduced species to be invasive species, there needs to be certain characteristics of the species.

<h3><u>Explanation</u>:</h3>

Invasive species are the species that belong to some other place and are introduced to a new place by means of any human interference. But many species are often transferred from one place to another. But not all of them remain there as an invasive species. This is because for being an invasive species, they need to have certain characteristics:

A. They need to have high rate of reproduction.

B. They need to have short dormancy periods.

C. They need to have high generic variability.

D. They need to be polyphagous and gregarious.

E. They need to have high dispersal rate and great adaptability.

F. They need to have phenotypic plasticity.

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