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
Galina-37 [17]
4 years ago
12

Smooth muscle is characterized by all of the following EXCEPT ________. a) it appears to lack troponin b) there are noncontracti

le intermediate filaments that attach to dense bodies within the cell c) there are no sarcomeres d) there are more thick filaments than thin filaments.
Biology
1 answer:
larisa86 [58]4 years ago
8 0

Answer:

There are more thick filaments than thin filaments. (Ans. D)

Explanation:

Smooth muscle doesn't contain the calcium binding protein troponin. In smooth muscle, contraction is initiated by a calcium regulated phosphorylation of myosin, rather than a calcium activated troponin system.

The intermediate filaments are connected to each other with the help of dense bodies, which are attached to adherens junction in the cell membrane of the smooth muscle cells which are known as sarcolemma.

Smooth muscle cell lack sarcomeres because their filaments occur as a spiral and actin, myosin filaments are not regularly arrayed along the length of the cell.

In smooth muscle thin filaments occurs more than thick filaments.

So, the answer is D.

You might be interested in
Which type of cell has the function of expanding and contracting to allow organisms to move?
atroni [7]
The muscle cell has that function.
6 0
3 years ago
Read 2 more answers
If a treatment suddenly lowered your serotonin level ___
Natalija [7]
<span>If a treatment suddenly lowers your serotonin level you may feel sluggish and should consult a doctor immediately. There are prescription drugs which can stabilize serotonin levels, but must be prescribed by a doctor.</span>
5 0
3 years ago
What is a difference between a waxing crescent and a waning gibbous
slega [8]

Answer:

But what does “waxing and waning gibbous” mean? Rob says crescent is when you can see less than half of the moon illuminated. “Gibbous, you attach that to either waxing or waning when you see more than half of the moon illuminated,” he said. Waxing means it's getting bigger while waning means it's getting smaller.

3 0
3 years ago
Read 2 more answers
What is biotechnology?
S_A_V [24]

Answer:

Put in simple terms, biotechnology is a technology that involves the use of living organisms.

You use biotechnology to create useful chemicals and products or to perform an industrial task.

Hope this helped

:)

8 0
3 years ago
Read 2 more answers
Which of the following organisms is most likely to spoil a food such as salted fish? Choose one: A. Cenarchaeum symbiosum B. The
Lubov Fominskaja [6]

Answer:

C Halobacterium species

Explanation:

ThIs is because this species of bacteria thrive well in high salt concentrations; and will  be inactive in a low  salt concentration medium.They are known  as Hallophilic Organisms. (salt organism)s

They are  rod-shaped, motile organisms , which  reproduced by binary fission,live in saline lakes, with  the cell bounded by a single layer of  plasma membranes.They  contain beta-caroteen pigments. it is this that is responsible for their red coloration.When this pigment is extracted, is  used in food dye. giving food red coloration.

In addition, Halo. Bacteria contain some  enzymes that can break dowm organic  molecules to simplest forms. These are  Degredative enzymes.(e.g Lipase , Amylases). it is this  feature that aids their application    for aiding  the  process of  fermentatio<u>n of salty foods</u>, and also aiding  of <u>coffee processing during production. </u>

<u>Since this is called a salty bacterium, and its enzymes will be most active in high salty concentrations, then option C is the correct answer.</u>

8 0
3 years ago
Other questions:
  • Which two groups of organisms were commonly found during the jurassic period?
    9·2 answers
  • What do you know about an organism's parents if it is homozygous for a
    13·1 answer
  • What is gravity?
    14·2 answers
  • Which statement is true about the scientific method? a.It follows one prescribed sequence of steps.b. It begins and ends with an
    7·2 answers
  • Kernels of corn or heat it and become popcorn why is this a chemical change the size and color of the corn have changed the kern
    10·2 answers
  • Whats the difference from products and reactants
    8·2 answers
  • Which kind of trait (dominant or recessive) mask, or hide, the other?
    10·2 answers
  • Describe the region or states affected by the occluded front?
    9·2 answers
  • स्कैरिस क्या है<br>scariest kya hai ​
    14·1 answer
  • Rainforests are not found in
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!