1answer.
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
ASHA 777 [7]
2 years ago
12

When a skeletal muscle fiber contracts during an isotonic concentric contraction, the distance between the Z bands of a sarcomer

e increases.True / False.
Biology
2 answers:
Orlov [11]2 years ago
8 0

Answer: False

Explanation: as the muscles shortens due to contraction, the actin filaments from opposite ends of the sarcomere approach each other. So the two Z bands come closer with reduction in length of the sarcomere

jonny [76]2 years ago
3 0

Answer:

False

Explanation:

The Z-line is a structure formed between adjacent sarcomeres and is found at each end of the sarcomere in striated muscle and defines the lateral boundaries of the sarcomere, its function is to give anchorage to titin and to the outer ends of the thin filaments.  Due to this anchoring function, the Z-lines are responsible for force of transmission and during contraction, as the sarcomere shortens, the distance between Z lines lessens

You might be interested in
Which statement describes surface wave
Novosadov [1.4K]

Answer:

A surface wave is a wave that moves along the interface of two different materials, like air and water.

Explanation:

4 0
3 years ago
Does any landform on Earth’s surface look the same as it did 5 million years ago? explain why or why not.
Sophie [7]

Answer:

Earth's surface didn't look much different. With few exceptions.

The global climate is cooler and drier, and seasonal, similar to modern climates. As the climate began to cool down grasslands continued to expand and forests started to dwindle in extent. In the seas, kelp forests made their first appearance and soon became one of Earth's most productive ecosystems. Water from the Atlantic Ocean poured in through the Strait of Gibraltar to deluge the Mediterranean Basin. The event is called the Zanclean flood. Parts of of southern Norway and southern Sweden that had been near sea level rose to form the Hardangervidda plateau and the South Swedish highlands.

Shorty after, the glaciations, uplift of the Rocky mountains and Panama seaway closure began to reshape the Earth.

Explanation:

4 0
3 years ago
A neutral pH of 7 and normal organism temperature is needed for a certain enzyme to be effective. What would happen to the enzym
lakkis [162]
If the pH/temperature fluctuates, the enzyme conditions would no longer be favorable, meaning the enzyme would no longer be able to perform its assigned function. If the conditions become too unfavorable, the enzyme would change shape (denature).
6 0
2 years ago
Read 2 more answers
A. 1. Which of the following is not a function of the circulatory system?
soldi70 [24.7K]

Answer: C. It manufactures red blood cells.

Brainliest please if it is correct!

3 0
2 years ago
In an isolated population of 10,000 rabbits, 900 are homozygous for a recessive mutant Sp1 allele. Assuming the population is in
Nonamiya [84]

42% of rabbits in the population are heterozygous for the mutant Sp1 allele

Hardy-Weinberg equilibrium

  • Assume that p is the frequency of the dominant allele
  • p² is the frequency of the organisms with homozygous dominant genotype
  • Assume that q is the frequency of the recessive allele
  • q² is the frequency of the organisms with homozygous recessive genotype
  • 2pq is the frequency of the organisms with heterozygous genotype
  • p+q = 1

According to the question, 900 out of 10000 rabbits are homozygous recessive

  • This implies that q² = 900/10000= 9/100= 0.09
  • So, q = 0.3
  • The frequency of the recessive allele is 0.3
  • p = 1-q = 1-0.3= 0.7

For organisms with heterogenous genotype, their frequency is 2pq

2pq= 2 x 0.3 x 0.7 = 0.42

In terms of percentage, 0.42x 100% = 42%

Therefore, 42% of rabbits in the population are heterozygous for the mutant Sp1 allele.

Learn more about Hardy-Weinberg equilibrium here:

brainly.com/question/10482905

#SPJ10

4 0
2 years ago
Other questions:
  • Drag the below phrases, which relate to photosynthesis, to the reaction category to which they best fit. each label can be used
    6·1 answer
  • Major consequence of ozone depletion is that
    10·2 answers
  • Which membrane contains atp synthases in gram positive or in gram negative bacteria?
    7·1 answer
  • How does organization play a role in homeostasis
    13·1 answer
  • In a rainforest what might be a limiting factor for the toucan population
    15·1 answer
  • The image depicts the anatomical structure of the forelimb of a dolphin and a bat, both mammals. Which hypotheses are consistent
    6·1 answer
  • In cells, hydrogen proxide is converted to water and oxygen through the activity of ____
    14·1 answer
  • Question 10 of 10
    6·2 answers
  • I need the answer for question 4 please and thank you
    14·2 answers
  • Somebody help me so I can give y’all some points
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!