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Darya [45]
3 years ago
9

Please help me help with some of my Botany questions!

Biology
1 answer:
Orlov [11]3 years ago
4 0

Answer:

for 7

Explanation:

7.If the leptons of mosses were found to contain a protein whose gene had the same nucleotide sequence as the gene that codes for P-protein, would that be significant evidence for either the homo-logy or analogy of leptons and phloem?

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What is the proper name for the electrical system in the heart?
borishaifa [10]

Answer:

SA node

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The SA node (called the pacemaker of the heart) sends out an electrical impulse. The upper heart chambers (atria) contract. The AV node sends an impulse into the ventricles. The lower heart chambers (ventricles) contract or pump.

7 0
2 years ago
What is the term for the two upper chambers of the heart?
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Carbon and fluorine combine covalently to form a binary compound. What is the formula of the compound with the name carbon tetra
Cerrena [4.2K]

Carbon and fluorine combine covalently to form a binary compound. the formula of the compound with the name carbon tetrafluoride is CF4.

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3 years ago
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Which biological scenario(s) best describes phenotypic plasticity for a trait?
DIA [1.3K]

Answer:

C) II and III only

Explanation:

Option 1 is not an example of phenotypic plasticity because each person is born with their own blood type and this doesn't change based on their environment and behavior.

Option 2 is an example of phenotypic plasticity because a person's red blood cell counts can increase based on their environment, i.e. moving to Denver, CO from Death Valley, CA. The higher elevation and decreased oxygen causes your body to produce more red blood cells.

Option 3 is an example of phenotypic plasticity because one twin can be taller than another because of differing behaviors, environments, etc.

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2 years ago
The chemical equation shown below represents photosynthesis. What is the role of substance A in photosynthesis?
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