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UNO [17]
2 years ago
11

Gases such as oxygen and carbon dioxide cross the plasma membrane by

Biology
2 answers:
grin007 [14]2 years ago
7 0

<em><u>mark as Brainliest</u></em>

Answer:

D) passive diffusion through the lipid bilayer.

Explanation:

The lipid bilayer is made up of phospholipids and these are an amphipathic molecule that contains hydrophilic as well as the hydrophobic region. The plasma membrane has 2 bilayers  packed together in the inside of membrane is hydrophobic, these structures make plasma membrane selectively permeable and allow flux of small non-polar material, and oxygen through simple diffusion.

USPshnik [31]2 years ago
3 0
Well, the cell membrane is full of a bunch of little holes. Sort of like a coffee filter.

What does a coffee filter do? Well, you put the coffee in it and run water through it. Then what?

The water is small enough to pass through the filter and bring some of the coffee with it. But the coffee grains are too big to pass through the filter. If we really wanted the coffee grains to get through the filter, we could force them through. Do you want chunks in your coffee? Eww. 

Now the cell membrane is the same way, the little things (water, carbon dioxide, oxygen, sugar) are all small enough to fit through the tiny holes in the cell membrane. This is called, "Passive Transport". Because the things can passively float their way in and out of the cell.

Now some other things are too big to fit through, so to make them fit, the cell has to use energy to open itself a little bit more to let them in. This is called, "Active Transport". Because the cell needs to be active and use energy to let those things in.

So to answer your question>>

The Gasses, such as Oxygen and Carbon Dioxide, cross the Cell Membrane(Plasma Membrane) by "Passive Transport".
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Waat phenotype has the greatest frequency in a trait that follows a normal distribution
Neporo4naja [7]

Answer:

A phenotype is the physical observations of anything, really. For example, lazuli bunting (a bird species) has feathers that range from dull brown to bright blue. the dull brown and bright blue birds are best at mating. adult males are aggressive toward the bluish-brown birds. The greatest frequency here is that 2 seperate colors are able to mate best, yet, the mixed birds are attacked.

Explanation:

I hope this helped,

have a great day.

5 0
2 years ago
many different types of mutations can occur within the body .cystic fibrosis is a genetic disorder that is caused by different m
denpristay [2]
<h3>Question from alternative source</h3>

Many different types of mutations can occur within the body. Cystic fibrosis is a genetic disorder that is caused by different mutations within the CFTR gene. One mutation in the CFTR gene that leads to cystic fibrosis causes translation to end earlier in the gene sequence. Which type of mutation causes this translation error that leads to cystic fibrosis?

  • silent
  • missense
  • nonsense
  • deletion

Answer:

Nonsense

Explanation:

Nonsense mutations describe mutations that produce a premature stop codon. The stop codons are UAG, UAA, and UGA. A way in which this could arise is, for example, if there was a substution of a nucleotide in the mRNA codon UAC (which codes for the amino acid Tyrosine) to the nucleotide UAG (which codes for a stop codon).

The translation machinery would reach this codon, which signals that translation should be terminated. This would mean that the mRNA would be released, and a truncated (shortened) version of the amino acid would be produced. This is likely to be non-functional, and may even be marked for destruction by the cell.

8 0
2 years ago
How does the author’s use of details convey her point of view about Eleanor Roosevelt’s life and legacy?
Vera_Pavlovna [14]

Author's use of details convey to Eleanor Rossevelt life and legacy are described below.

Explanation:

1.She advocated for expanded roles for women in the workplace, the civil rights of African Americans and Asian Americans, and the rights of World War II refugees. Following her husband's death in 1945, Roosevelt remained active in politics for the remaining 17 years of her life.

2.The fireside chats were a series of evening radio addresses given by U.S. President Franklin D. Roosevelt (known colloquially as "FDR") between 1933 and 1944.

3..President Theodore Roosevelt, an Oyster Bay Roosevelt, was the uncle of Eleanor Roosevelt later wife of Franklin Roosevelt. Despite political differences that caused family members to actively campaign against each other, the two branches generally remained friendly.

4.Champions of Human Rights. Eleanor Roosevelt (1884–1962)

  • Continuing her work on behalf of all people, she advocated equal rights for women, African-Americans and Depression-era workers, bringing inspiration and attention to their causes.

7 0
2 years ago
Which information on an autopsy report would be essential for evaluating a suspect's alibi?
3241004551 [841]

The answer to your question: cause of death.

3 0
2 years ago
Read 2 more answers
A forensic scientist wants to reveal hidden writings or alterations in a document. Which technique should he use?
timama [110]

Answer:

ultraviolet or infrared imaging- when you hold a paper up to light it may reveal  somthing that was'ent there if you wrote it in lemon juice. In a similar way, forsencic scientists use UV lights to reveal any alteration or hidden writings on a piece of paper.

6 0
2 years ago
Read 2 more answers
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