answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Schach [20]
1 year ago
11

Since each myofibril is attached at either end of the muscle fiber, when sarcomeres shorten, the muscle fiber

Biology
2 answers:
hammer [34]1 year ago
5 0

Answer: When sarcomeres shorten, the muscle fiber SHORTENS.

Explanation:

A muscle fiber is made up of many myofibrils that are attached at either end, which are composed of repeating subunits called sarcomeres that are responsible for muscle contraction. There are two types of filaments that makes up myofibrils they include;

- thick filaments and

- thin filaments

These filaments form the overlapping layers of sarcomeres. The contraction of muscle occurs through sliding- filaments model in the sarcomeres. The sarcomere and the muscle fibre shortens in length during muscle contraction ,due to the thick and thin filaments sliding over each other. I hope this helps, thanks.

zmey [24]1 year ago
3 0

Answer:

B. Shortens

Explanation:

Myofibrils are components of the animal skeletal muscles that are made up of sacromeres. They perform the muscular contraction and relaxation via the sliding filament model.

To produce motion, A cross-bridge forms between actin and the myosin heads triggering shortening of the sacromere. This shortening of the sacromere results in the contraction of the muscle fibers, which the net effect can be seen to be a shortening of the fibers

You might be interested in
The energy source for sperm to swim comes from
Rama09 [41]
The energy source of the sperm for them to swim is the protein breakdown by mitochondria in the midpiece of the sperm.

Mitochondria are double membrane-bound organelles found in the cells. It is said to be the "powerhouse of the cell". They provide ATP as a source of chemical energy for the cells.
5 0
1 year ago
When cells are metabolically active but not dividing, they are in the ________ phase. when cells are metabolically active but no
Mars2501 [29]
The answer is lag. The number of bacterial cells doubles at a constant, exponential rate during log phase, while growth rate and death rate are the same during stationary phase. The fourth phase is the death phase, when the rate of cell death is faster than the population growth. 
3 0
2 years ago
Read 2 more answers
On the real ocean floor alternating stripes of normal and reversed polarity are not al equal width. What do this tell you about
Tpy6a [65]

Varies

Explanation:

From the differences in the width of the alternating stripes, we can conclude that the lengths of time represented by this evidence varies.

Normal and reversed polarity do not have equal length of time when they occur.

  • The paleomagnetic field just like the earths geomagnetic field we have today varies from time to time.
  • During period of normal polarity, the north pole of the geomagnetic field is close to that of the earth.
  • At reversed polarity, the north of the magnet changes position.
  • Their is no regular interval to this
  • Magma that are getting magnetized during this period will have different variations in the width of the magnetic fields.
  • The width of the stripe shows the duration of the anomaly.
  • Since the geomagnetic field takes their root from the core, the intensity varies and it affects the extent of magnetization of magnetic minerals in rocks.

learn more:

Sea floor spreading brainly.com/question/9912731

#learnwithBrainly

7 0
2 years ago
What is the heart of the scientific process
azamat

Answer:

. Experimentation is the heart of science. Scientists ask questions, gather evidence, share ideas, and analyze data. In designing an experiment, the specific question (or questions) that the experiment is meant to answer must first be clearly identified.

Explanation:

5 0
2 years ago
Soil that is so rich in organic matter it can be burned is called what?
svetlana [45]
The answer for this is B
8 0
1 year ago
Read 2 more answers
Other questions:
  • In order to beat, the heart needs three types of cells. describe the cells and their function.
    14·1 answer
  • A gardener is concerned that her greenhouse is getting too hot from too much light, and seeks to shade her plants with colored t
    6·1 answer
  • Whale calves have a high survival rate, with most calves reaching adulthood. However, their aquatic ecosystem contains a limited
    7·2 answers
  • The only vertebrates in which blood flows directly from respiratory organs to body tissues without first returning to the heart
    14·1 answer
  • Regarding horizontal gene transfer between bacteria by conjugation, transduction, or transformation:
    8·1 answer
  • Chantal was eating raisins and a few of them fell into her glass of drinking water. She finished eating the rest of the raisins.
    5·1 answer
  • What is the best definition for biogeochemical cycles?
    8·2 answers
  • When Thomas Hunt Morgan crossed his red-eyed F1 generation flies to each other, the F2 generation included both red- and white-e
    6·1 answer
  • If bears find insects after they move decaying logs, they more frequently move decaying logs. This most clearly indicates that f
    9·1 answer
  • Please Answer Quick!!! 2. How are the three mutated strands similar to each other?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!