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Ne4ueva [31]
3 years ago
11

What is the thing that pumps blood to your heart?​

Biology
1 answer:
Alecsey [184]3 years ago
6 0

Answer:

Blood vessel

Explanation:

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Put the items in the correct order. Below is a sequence of events. Place them in the order they should occur, number 1 being the
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<u>ANSWER:</u>

The correct order is-  Zygote, Blastula, Gastrula, Fetus.

<u>EXPLANATION:</u>

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  • The zygote undergoes cell division to form blastula which is a "ball of cells".
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AVprozaik [17]

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natita [175]

Answer:

Gated ion-channels

Explanation:

These ion channels are protein molecules that act as a passageway which span across the cell membrane allowing the movement of ions from one side of the membrane to the other. They possess the ability to open and close in response to either chemical or mechanical signals.They possess a fluidic pore, which becomes available to ions after a conformational change in the protein structure has been activated causing the ion channel to open.  Based on the stimulus to which they respond, ion channels are divided into three groups: voltage-gated, ligand-gated and mechano-sensitive ion channels. Channels responding to electrical (voltage-dependent ion channels), mechanical, or chemical (ligand-gated ion channels) stimuli open and allow rapid ion movement into or out of the cell, and this movement creates an electrical signals.

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Which two of these characteristics does an organism with bilateral symmetry possess?
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<span>Choices (b) and (c) are the most correct. Bilateral symmetry requires a central axis for there to be two halves. In addition, this type of symmetry requires a head, which will encounter the environment before any other part of the body and move in the direction of travel. Most animals exhibit this characteristic.</span>
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The answer is other people assuming that you are in a gang

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