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spayn [35]
3 years ago
5

During which of these stages are the pulmonary and aortic valves open? relationships between the ecg and left chamber pressures

during the cardiac cycle. phase 1 phase 2a phase 2b phase 3
Biology
1 answer:
Aloiza [94]3 years ago
4 0
Phase 2b.......................................................................................
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Plz do all 4 boxes thanks in advance
Alenkinab [10]

Answer:

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Explanation:

Definition- he breakdown of glucose by enzymes, releasing energy and pyruvic acid.

Reactants-  ATP and NADH are the products of the Glycolysis reaction.

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7 0
3 years ago
An organism that produces its food by photosynthesis _____.
HACTEHA [7]

Answer: The correct answer for the fill in the blank is- May be placed in the Plantae kingdom.

An organism that produces food by photosynthesis can belong to three kingdoms that are Monera ( example- cynobacteria) , Protista ( example- algae) and Plantae ( example- green plants).

Thus, it is not necessary that the organism must be placed in Plantae kingdom as it may belong to any of these three.

Organisms belonging to Animalia kingdom do not perform photosynthesis.

Thus, second option is the right answer.

7 0
4 years ago
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one of possibly several forms of the nucleus of an element, differing from other forms only in the number of neutrons is called
Setler79 [48]
This is called an isotope.
3 0
3 years ago
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If a DNA molecule is found to be composed of 40% thymine, what percentage of guanine would be expected.
Likurg_2 [28]

Answer:

10%

Explanation:

Chargaff postulated the complementary base pairing rule, where he stated that in the DNA molecule, Adenine (A) will always pair with Thymine (T) and Guanine (G) with Cytosine (C) i.e. A-T, G-C

Chargaff stated that the concentration of purines (Adenine and Guanine) is always equal to that of pyrimidines (Thymine and Cytosine) i.e. {A} + {G} = {C} + {T}

These equal concentration equals 100% in totality i.e. A+G+C+T= 100%

Thymine pairs with Adenine, if there is 40% of Thymine in the DNA molecule, it means there will be 40% of Adenine also. 40 + 40 = 80%. This leaves us with 100-80 = 20% for Guanine and Cytosine.

Since there will be an equal amount of Guanine and Cytosine too, Guanine will therefore, be 20/2 = 10%.

That is, 10% Guanine, 10% Cytosine.

8 0
3 years ago
Water is warmed by the sun and evaporates because
Nady [450]

Answer:

cuz fam when liquids reach above boilin point they melt

Explanation:

7 0
3 years ago
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