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enyata [817]
3 years ago
13

20 points

Biology
1 answer:
KonstantinChe [14]3 years ago
6 0

Answer:

Option C = No, when elements combine to form a new material, they have properties unique to the new materials.

Explanation:

When sodium contact with water it loses its one electron and thus gain positive charge. When there are more sodium atoms present and many atoms do this thus more positive ions are produced and these positive ions repeal each other at high speed and explosion occur.

But when it form compound with other material, it will not showed this behavior.

Example:

Consider the sodium chloride, when it dissolve in water sodium not showed explosion. In sodium chloride sodium already gives its electron to the chlorine and have stable electronic configuration. The sodium present in cationic form. When it dissolve, partial positive charge of water surrounds the Cl⁻ and partial negative charge of water surrounds the Na⁺ ion, ans sodium chloride gets dissolve into water without explosion.

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How does the circulatory system supply blood throughout the body​
sattari [20]

Answer:

The circulatory system delivers oxygen and nutrients to cells and takes away wastes. The heart pumps oxygenated and deoxygenated blood on different sides. The types of blood vessels include arteries, capillaries and veins.

Explanation:

8 0
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Describe the physiological events occurring in the heart muscle represented by each ECG component (the P wave, QRS complex, and
Sauron [17]

Explanation:

  • <em>The P wave</em><em> represents the atrial depolarization (sum of the right and left atriums) and the atrial contraction.</em> In normal circumstances, the P wave is smooth and rounded (<2.5 mm) and no more than 0.12 seconds in duration. It's the first positive deflection (you can see this in the image I added)
  • <em>QRS complex</em> can include the Q wave, R wave, and S wave, but there are exceptions. <em>It represents the electrical impulse through the ventricles causing the ventricular depolarization.</em> <em>Its amplitude is the largest because ventricles are the chambers with the largest mass in the heart </em>and it has a duration of 0.06-0.10 seconds in adults.
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3 0
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Which of the following characterizes the lag phase of the bacterial growth curve?
Zepler [3.9K]

Answer:

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The growth rate of bacteria in the lag phase is slow because the medium is new to the bacterial culture and it requires time for bacteria have to adapt to the new cultural environment and to synthesize enzymes required for substrate utilization.  

After getting adapt in their new environment bacteria starts to grow at an exponential rate. So little increase in cell number characterizes the lag phase.

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All of the following are true facts about enzymes EXCEPT
Lelechka [254]
I believe the answer is c
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3 years ago
Read 2 more answers
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