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Leno4ka [110]
2 years ago
5

14. Cells in heart require large amounts of energy because the heart never stops beating. Because of this, the cells in heart re

quire a larger number of –
A nuclei B mitochondria C vacuoles D lysosomes
Biology
1 answer:
olga55 [171]2 years ago
8 0

Answer:

B. Mitochondria

Explanation:

Mitochondria is the cell’s powerhouse, these organelles are the main suppliers of energy without these organelles; nutrients are unable to be converted to usable ATP which is needed for many vital jobs including cAMP mediated transport. In addition, when looking at histology, tissues with many mitochondria organelles, which looks like spots, will most likely be muscle tissues.

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in order to draw the food web correctly, which organisms should have two arrows pointing toward them?​
Tpy6a [65]

Answer:

Explanation:

A fox (for example), has more than two arrows pointed towards it.

Because the mouse, rabbit, squirrel, and bird get eaten by the fox.

3 0
3 years ago
The body uses two types of amino acids: essential and nonessential. Which of the following statements about essential and noness
zlopas [31]

Answer:There are 11 nonessential amino acids.

Explanation:amino acids are monomers of proteins.proteins are made up of carbon,hydrogen, oxygen and nitrogen.there are 20 amino acids found in proteins.

Plants cam produce all the amino acids they need but animals cannot.

Essential amino acids are those that animals cannot produce by themselves and so need to obtain from their diet.there are 9 in numbers.

Non-essential amino acids are produced by the animals.they are not necessarily non-essential as the name indicates.they are 11 in numbers.

7 0
3 years ago
Consider the factors that affect muscular strength. Read each scenario and identify whether each would result in a stronger or w
nlexa [21]

Muscles are required in breathing, talking, running, walking, and any body movement. Actin and myosins are protein filaments present in muscle cells that help to contract and relax or change the shape of muscles. Muscles are responsible for the movement or motion of organisms. Joints are the connection between two or more bones. Most joints are mobile.

Muscle strength is determined by several factors. Some of those are the physical shape, size, and innervation of the muscles.  

Weak contraction

  • Potassium accumulates in the sarcoplasm.
  • Contracted lower sarcoplasm pH.
  • Begin contraction with muscle already 50%.
  • The circular arrangement of muscle fascicles.

Stronger contraction

  • Increase in muscle belly circumference.
  • A lesser proportion of motor neurons to muscle fibers.
  • Increased recruitment.
  • Increased stimulus frequency.

7 0
2 years ago
Which of the following is an example of extrusive rock that has cooled too quickly for grains to form?
andrey2020 [161]
I believe the answer is Volcanic glass
5 0
3 years ago
A student added a solution to the plant cell shown in image 1 which resulted in the plant cell undergoing changes, as shown in i
Ymorist [56]

Answer:

Plasmolysis

Explanation:

In the image 1 the cell is having sufficient quantity of water leading to a turgid cell.

The image 1 plant cell is in a dilute solution in which water enters into cell from external medium.

The image 2 plant cell is exposed to a solution which is high concentrated solution.

Due to this high concentrated  solution the water present in  the cell is send out by exosmosis.

Due to loss of water from plant cells the protoplasm in plant cell shrinks in which cell membrane gets separated from  cell wall.

This shrinkage of protoplasm by loss of water is called plasmolysis.

3 0
3 years ago
Read 2 more answers
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