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stellarik [79]
3 years ago
14

Which type of pacemaker discharges impulses at a single, steady rate, regardless of the heart's own electrical activity?

Biology
1 answer:
svlad2 [7]3 years ago
8 0
<span>Fixed rate peacemaker discharges electrical impulses at a single and steady rate regardless of the underlying electrical activity of the heart. Different peacemakers are stimulated in different areas of the heart. This peacemaker impulse is implanted next to the collarbone, the surgery is done under local anesthesia.</span>
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Glucose labeled with 14C in C-3 and C-4 is completely converted to acetyl-CoA via glycolysis and the pyruvate dehydrogenase comp
Morgarella [4.7K]

Answer:

The correct answer is option d.

Explanation:

The production of Acetyl-CoA takes place by the dissociation of both carbohydrates and lipids in the process of glycolysis and beta-oxidation. It then moves into the TCA cycle in the mitochondria and combines with oxaloacetate to give rise to citrate.  

In the given case, no labeling will be found in the acetyl-CoA. The labeled C3 and C4 carbon of glucose signify the carboxyl carbon of pyruvate. In the succeeding reactions of the transformation of pyruvate to acetyl-CoA, the carboxyl carbon gets lost in the form of carbon dioxide. Thus, acetyl-CoA does not comprise any labeled C3 and C4 of glucose.  

5 0
3 years ago
Why can't blue whales get cancer?
Brut [27]

Answer:

Because it is so big the mutated cell is harmless to them because of teir cell count

Explanation:

6 0
2 years ago
Read 2 more answers
NEED BIO HELP ASAP 30 POINTS !!!!!!!!!!!!!!!!!!!!!!
alexandr402 [8]

1. Cell starts into mitosis phase of the cell cycle.

2. Helicase begins to break the hydrogen bonds between the nitrogen bases. (The double helix has to be unwound in order to expose the nucleotides)

3. DNA polymerase attach the free-floating nucleotides to the exposed nitrogen bases. (this allows a new DNA strand to be made on the existing one)

4. Free floating nucleotides pair up with exposed nitrogen bases (this is what really builds the new strand, based around the template strand)

5. Two new molecules of DNA are created

Statements:

Adenine

Cytosine (Car in the Garage, Apple in a Tree is a good trick to know how they pair)

DNA

Replication

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4 0
3 years ago
. Cuando la célula madre se divide varias veces de forma consecutiva y los núcleos se rodean del citoplasma dentro de ella, es u
AfilCa [17]

Answer:

Cuando la célula madre se divide varias veces de forma consecutiva y los núcleos se rodean del citoplasma dentro de ella, es una reproducción tipo: <u>esporulación</u>.

Explanation:

En la reproducción asexual, un solo ser origina nuevos individuos iguales entre si e iguales a su progenitor. Este tipo de reproducción es común en ciertos invertebrados, en las bacterias y en los protozoarios. La esporulación es uno de los tipos de reproducción asexual, esta consiste en varias divisiones del núcleo que se envuelve de fragmentos citoplasmáticos, originando muchos descendientes genéricamente idénticos. Dicha reproducción permite la formación de esporas y la liberación de las mismas cuando las paredes de la célula se rompen. Se observa en ciertas especies de protozoarios.

8 0
2 years ago
In the reaction 3H2 + Blank Space __________N2 → 2 NH3, what coefficient should be placed in front of N2 to balance the reaction
Helga [31]
Count the number of same elements before and after →
Make sure number of same elements on both sides are equal
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