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just olya [345]
3 years ago
6

What is meant by cisternae

Biology
1 answer:
wlad13 [49]3 years ago
6 0

A cisternae is a flattened membrane disk that's in the endoplasmic reticulum and the Golgi apparatus.

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Why does weathering take so much time?
dsp73

Answer:

weathering has to change the soil not transport it

Explanation:

4 0
4 years ago
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Which of the following is/are required for the polymerization reaction catalyzed by DNA polymerase III?
Temka [501]

Answer:

D. I, IV, VI, and VII

Explanation:

DNA polymerase III has both 5' to 3' polymerization activity and 3' to 5' exonuclease activity (the proofreading). DNA pol III requires divalent magnesium ions for its polymerization and proofreading activities. Here, the magnesium ions serve as cofactor.

DNA polymerase III cannot start the process of synthesis of new DNA strand de novo and uses an RNA primer synthesized by primase enzyme. The polymerization activity of DNA polymerase III elongates the RNA primer in 5' to 3' direction. The primers are removed by 5' to 3' exonuclease activity of DNA polymerase I.

During polymerization, the DNA polymerase III uses existing DNA strand as a template. The four dNTPs namely deoxyadenosine triphosphate (dATP), deoxycytidine triphosphate (dCTP), deoxyguanosine triphosphate (dGTP) and deoxythymidine triphosphate (dTTP) are added to the RNA primer according to the sequence of DNA template.

8 0
4 years ago
For every one nadh molecule oxidized at complex i, how many total hydrogen ions are pumped across all of the complexes from the
erma4kov [3.2K]

For every one NADH molecule oxidized at complex I, 10 HYDROGEN IONS are pumped across all of the complexes from the mitochondrial matrix to the inner membrane space

Cellular respiration has three main stages: glycolysis, the Krebs cycle, and oxidative phosphorylation.

<h3>What is Oxidative phosphorylation ?</h3>

During oxidative phosphorylation, the reduced form of nicotinamide adenine dinucleotide (NADH) helps to carry electrons from one reaction to another across a series of molecular complexes.

  • The electron transport chain of oxidative phosphorylation is coupled to the generation of an electrochemical proton (H+) gradient across the mitochondrial inner membrane.
  • Subsequently, this proton H+ gradient is then used to produce ATP by an ATP synthetase.

Learn more about Oxidative phosphorylation here:

brainly.com/question/8562250

#SPJ4

5 0
2 years ago
Federigo uses up his family fortune by — a. spending it on hunting with his falcon b. spending it on foreign travel c. putting i
velikii [3]

Answer:

d. wasting it trying to impress Monna Giovanna

Explanation:

Federigo degli Alberighi happened to be in deep love and crush for a woman who was called Monna Giovanna. He spent everything (all of his family fortunes)including his entire money just to draw her attention and cause her to have feelings and direct her affection, love and interest to him but it failed as Monna imstead showed little or no interest in him. This resulted in Federigo predicament -a wealthy man turned to a poor man after spending all his family fortunes on trying to woe her. As a result, Federigo degli Alberighi decided to return to his farm to hawk as a means of livelihood and survival.

7 0
3 years ago
The epithelium lining the stomach, small intestine, and most of the large intestine is simple columnar; the epithelium in the or
Gemiola [76]

Answer:

Both statements are true.

Explanation:

The simple columnar epithelium is characterized by presenting a single layer of cylindrical cells, with the basal and oval nucleus. This type of epithelium is found throughout the entire digestive epithelium, mainly on surfaces with high absorption power such as the walls of the small intestine, but they are also found on secretory surfaces such as the stomach walls, in the gallbladder, in some sections of the collecting tubes of the kidney, in the uterine tube (where it is ciliated) and in the uterus itself.

Squamous Stratified Epithelium is made up of basal cells that are cuboidal or columnar and metabolically active and superficial cells are flattened (squamous). Its function is to protect the underlying tissues in areas subject to nuclei abrasion, this epithelium (not keratinized) forms the wet surfaces of the basal esophagus, oral cavity and vagina. The oropharynx and the pharynx itself are lined by a stratified squamous epithelium as well.

5 0
4 years ago
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