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
Temka [501]
3 years ago
11

Which of the following is correct about a muscle contraction?

Biology
2 answers:
Lostsunrise [7]3 years ago
6 0
Which of the following is correct about a muscle contraction?  A.Sarcomeres produce actin and myosin.
B.(Correct Response) Myosin heads attach to sites on actin filaments.  C.Myofibrils attach to Z lines.  D. ATP causes fascicles to contract muscle fibers.

Which structure is composed of the filaments actin and myosin?
  A.fascicle
B.(Correct Response) myofibril
  C.muscle fiber
  D.sarcomere


Which statement is correct about how muscles move bones? A. The origin is where only flexors attach to move a nearby bone.
B. Extensors cause a bone to move initially.  C. Tendons connect extensors and flexors to each other.
D. (Correct Answer) The insertion is where a muscle attaches to the bone it wants to move.
julia-pushkina [17]3 years ago
3 0

Answer:

The correct answer would be "Myosin heads attach to sites on actin filaments".

The muscle cell or myofibril consists of two types of protein filaments namely; actin (thin filament) and myosin (thick filament).

The myosin heads attach to the binding sites on the actin filaments and pull it towards the M-line in order to produce contraction.

The hydrolysis of ATP provides energy for this contraction cycle.

You might be interested in
What structure in the female reproductive system produces eggs?
allochka39001 [22]
ovary

These oocytes are formed during the early development of the person, it is together formed in the embryonic stage of development.

In puberty, these oocytes have now been mature thus, the individual is ready for her first menstruation, it takes time before these oocytes are fully developed but they are formed as early as the state of the genitalia, brain, body was formed.
<span>Somehow, it is like the brain, the brain is slowly developing til the near age of puberty or late childhood. </span>
<span>Eyes are also an analogy to oocytes, during infancy these organs aren't developed yet and these years the child can only see vague and blurred vision and takes almost 2 years for the child to see clearly.</span>
3 0
3 years ago
What are the different shapes/forms dna can be in? ​
Svetradugi [14.3K]

Answer:

Three major forms of DNA are double stranded and connected by interactions between complementary base pairs. These are terms A-form, B-form,and Z-form DNA.

Hope this helps!

7 0
3 years ago
Read 2 more answers
Some environmental factors are studied by the use of:
Tresset [83]
Space satellites
Environmental
6 0
3 years ago
Why are some of carl linnaeus’s classifications of organisms incorrect?
madreJ [45]

Answer:

Some of Carl Linnaeus classifications of organisms are incorrect because he classified them base on their appearances and actions

Explanation:

Carolus Linnaeus is the father of taxonomy, which is a system of naming and classifying organisms. He classifies organisms base on their appearances and actions instead of their relationships. He invented a system of classification called hierarchical system of classifications. This system include 8 taxa, dormain, kingdom, phylum, class, order, family,genus and species.

3 0
2 years ago
I NEED HELP THIS IS VERY URGENT!!<br><br> What is the genotype and phenotype of this Punnett square?
Aleksandr [31]
2 co dominant and 2 recessive
6 0
2 years ago
Other questions:
  • Under identical atmospheric conditions, freshwater ________.
    12·1 answer
  • Inside a prokaryote, such as E. coli, an operon controls for the production of the amino acid tryptophan. What occurs in the cel
    12·2 answers
  • Which statement best describes the relationship of photosynthesis and energy?
    5·1 answer
  • Is it safe to go snow skiing in bright sunlight without eye protection in very cold temperatures?
    10·1 answer
  • Lotions applied during winter season moisturize the skin very quickly. What could be the reason for this?
    7·1 answer
  • Most respiration occours in organels is?
    12·1 answer
  • HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
    8·1 answer
  • Which countries is the maned wolf native to? Short answers, please!
    5·2 answers
  • Plz help asap! What is the best explanation of how the fluid mosaic model helps explain the selective permeability of cell membr
    7·1 answer
  • PLEASE DO A GOOD JOB IM USING A LOT OF POINTS
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!