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inessss [21]
4 years ago
6

Each heart muscle cell is coupled to its neighbors electrically by tiny holes called:

Biology
1 answer:
Paladinen [302]4 years ago
3 0
The answer is <span>Gap Junction

Gap junction is a small gap between the cells that used to transmit signall to the cells. This gap will allow the heart muscle to be activated in unison. Coordinated contractions are important for heart muscle because it creates the force that needed to pump the blood.</span>
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Which of the following is best for representing a time period in which an organism could evolve (for evolution to happen)? A 3,0
CaHeK987 [17]

Answer:

C] 10,000 years

Explanation:

It usually takes a million or more years. The longer, the more identifiable.

6 0
3 years ago
Which process occurs as a zygote divides to form a multicellular embryo?
Snezhnost [94]

Answer: meiosis

Explanation:

7 0
3 years ago
María, Juana y Laura son amigas. María aprende inglés en su clase. Ella está aburrida y quiere jugar.
ohaa [14]

Answer:

juana es alta :)

Explanation:

3 0
3 years ago
Two students are given cubic boxes, measuring 10 cm on a side. Robert puts a single glass marble with a
Katyanochek1 [597]

Answer:

Both boxes have the same amount of empty space

Explanation:

Given

Cube Box

Length = 10cm

Robert:

1 glass marble

Diameter = 10cm

Susan:

1000 glass marble

Diameter = 1cm

Required

Whose box has more empty space?

First, we need to calculate the volume of the cubic box.

Volume = Length^3

Substitute 10cm for Length

Volume = 10^3

Volume = 1000cm^3

Next, calculate the volume of Robert's glass

Volume is calculated as:

Volume = \frac{4}{3}\pi r^3 ---- Volume of a sphere

Where

r = radius

r = \frac{1}{2} * Diameter

Diameter = 10cm --- Given

Substitute 10 for diameter

r = \frac{1}{2} * 10cm

r = 5cm

So:

Volume = \frac{4}{3}\pi r^3

Volume = \frac{4}{3} * \frac{22}{7} * 5^3

Volume = \frac{4}{3} * \frac{22}{7} * 125

Volume = 523.8cm^3

Next, we determine the volume of Susan's 1000 glasses

Volume is calculated as:

Volume = \frac{4}{3}\pi r^3 ---- Volume of a sphere

Where

r = radius

r = \frac{1}{2} * Diameter

Diameter = 1cm --- Given

Substitute 1cm for diameter

r = \frac{1}{2} * 1cm

r = 0.5cm

Substitute 0.5cm for radius in Volume = \frac{4}{3}\pi r^3

Volume = \frac{4}{3} * \frac{22}{7} * 0.5^3

Volume = \frac{4}{3} * \frac{22}{7} * 0.125

Volume = 0.5238

But there are 1000 glasses.

So, the volume of 1000 glasses is:

Volume = 0.5238 * 1000

Volume = 523.8cm^3

--------------------------------------------------------------------------------------------------------------

For Robert:

Volume = 523.8cm^3

For Susan:

Volume = 523.8cm^3

Since, they have the same volume.

Both boxes have the same amount of empty space

5 0
3 years ago
leukemia is the disease in which the body has less than the normal number of white blood cells what effect would leukemia have o
IgorC [24]

Answer:

The person would be more prone to illness

Explanation:

White blood cells are also known as Leukocytes. (which is where the name Leukemia came from) They help protect the body from illnesses and foreign invaders by engulfing and destroying them. If the body cannot create enough white blood cells, then there are less cells to fight off infection.

3 0
4 years ago
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