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Hunter-Best [27]
4 years ago
10

Ocean currents are caused by

Biology
1 answer:
son4ous [18]4 years ago
7 0
They are caused by wind
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A human pancreatic cell obtains O2 and necessary molecules such as glucose, as amino acids, and Cholesterol from its environment
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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
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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
Lysosomes are to damaged organelles, as garbage collectors are to *
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Explanation:

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Life as we know it depends on the genetic code: a set of codons, each made up of three bases in a DNA sequence and corresponding
slava [35]

Answer:

In the most general case of x bases and y bases per codon, the total number of possible codons is equal to xy . In the case of the hypothetical Martian life-forms, is the minimum codon length needed to specify 17 amino acids is 5 (25 = 32), with some redundancy (meaning that more than one codon could code for the same amino acid).  For life on Earth, x = 4 and y = 3; thus the number of codons is 43, or 64. Because there are only 20 amino acids, there is a lot of redundancy in the code (there are several codons for each amino acid).

Explanation:

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The height of the wave is the MOST affected by the
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B i think!! hope this helped
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Why would a study involving continuous handrail support, oxygen uptake, and heart rate in women during submaximal step treadmill
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