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pishuonlain [190]
3 years ago
8

DESCRIBE THE FUNCTION OF A CELL MEMBRANE AND ITS RELATIONSHIP TO WHAT HAPPENS INSIDE A CELL

Biology
1 answer:
Anna007 [38]3 years ago
6 0

Answer:

cell membrane's main function is to act as a selectively permeable barrier to the transport of materials across it. Membrane is made up of phospholipids arranged in a bilayer fashion. The phospholipids are amphipathic in nature, that is, contain both a hydrophobic and a hydrophilic end.

Explanation:

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Early ideas on the classification of life recognized all organisms as belonging to one of two fundamental lineages−prokaryotes o
Maksim231197 [3]
I think this view is NOT compatible with either of these hypothesis illustrated above. This is because each hypothesis presents prokaryotes as two separate groups. Prokaryotes are unicellular organism that lacks a membrane-bound nucleus, mitochondria, or any other membrane bound organelle unlike the eukaryotes which has the membrane bound nucleus and other organelles. 
4 0
3 years ago
"Generally describe the series of events via which pyruvate is further processed after glycolysis (assume that this is in the pr
kobusy [5.1K]

Answer:

The product of glycolysis is two molecules of pyruvate. It is a three-carbon compound. This pyruvate again undergoes oxidation in the cytoplasm. This process is called pyruvate oxidation which produces Acetyl CoA. The Acetyl CoA is a two-carbon molecule.

Acetyl CoA again used for the citric acid cycle. This is also called as Kreb's cycle / TCA cycle. Because citric acid has 3 carboxylic groups. The acetyl coenzyme produces NADH, FADH2, ATP. The citric acid cycle occurs in the mitochondrial membrane. This is an 8 step process. The first product is citric acid. The other products of each step are isocitrate, alpha-ketoglutarate, succinyl CoA, succinate, Fumarate, L - malate, and Oxaloacetate (OAA).

Another process of aerobic respiration is the electron transport chain ( ETS). Here the energy stored in NADH, FADH2 in the citric acid cycle are utilized. It is a chain of electron carriers. ETS occurs in the inner membrane of mitochondria.  

In short, the glucose splits by glycolysis and produces ATP, NADPH, and final product pyruvate. The pyruvate is oxidized and forms acetyle coenzyme. This is used in the TCA / citric acid cycle. In this process also NADH, FADH2 which forms electrons are produced. Theses electrons are carried by different electron carriers and accepted by oxygen.

In the process of pyruvate oxidation 6 ATP, and in Kreb's cycle 18 ATPs, in ETS, 4 ATPs are produced. In addition to this in glycolysis produces 4 ATPs. The total number of ATP in aerobic respiration is 32 ATP.  

8 0
3 years ago
Some fungi are unicellular organisms which feed off human tissues making a person ill. How do these fungi compare with bacteria
RUDIKE [14]

Answer:

Fungi are unicellular organisms  eukaryotic organisms that includes microorganisms such as mushrooms, yeast, and molds.

Bacteria are group of  single-cell microorganisms present in different shapes such as spirals, rods or spheres.

<em>Some of the fungi can causes disease and infection to humans same as bacteria.</em>

Fungi infects humans primarily through their skin. As fungi reproduce through spore formation often present in the air and soil and come in contact with human body surface which further multiply at body surface and infects human. Some of the fungal infections include ringworm,  athlete's foot and jock itch.

Same as Fungi bacteria also enters into human body and multiply within the human cell causing human diseases such as tuberculosis, typhoid fever and cholera.

7 0
3 years ago
Why would an athlete need to be concerned about a twitch or sustained contraction​
prisoha [69]

Answer:

why an athlete would need to be concerned about twitches or contractions is because, whenever they perform, and such thing happens, it will most likely distract the athlete, and cause the athlete doing his/her performance to not be as good, and may lead to failure, for example, when someone is running very fast for a sprinting race, and he has a contraction in his leg it will cause him to react by showing signs of pain by slowing down or even tripping and falling, causing him to lose the race.

Hope this Helped!

5 0
2 years ago
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Which of the following cell types is haploid
wolverine [178]
Haploid cells are sex cells or gametes.
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3 years ago
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