All categories

3 years ago

Why is the smooth muscle cell shaped the way it is? ...?

1 answer:

8 0

Smooth muscle cells are contractile and will contract from many different agents such as hormones travelling in the blood and neurotransmitters from the autonomic nervous system. The smooth muscle cells are coupled together so that when one cell contracts, the contraction is relayed to the next. This contractile ability is important in the vascular system as it helps regulate blood pressure by changing the size of the lumen of the vessel.
This contractile feature also enables the movement of food through the digestive tract. Rhythmic contractions of smooth muscle cells, called peristalsis, moves the food along.

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!

You might be interested in

It is virtually impossible to locate the genetic factors involved in most psychological characteristics because of:_________

Lina20 [59]

It is virtually impossible to locate the genetic factors involved in most psychological characteristics because of polygenic inheritance.

Multiple genes, or polygenes, generate features in polygenic inheritance. Numerous diverse phenotypes, or displayed qualities, may be expressed through polygenic traits. When phenotypes were expressed, a variety of inherited qualities are mixed together due to polygenic inheritance, a kind of incomplete dominant inheritance.

The phenotypic, such as the color of one's hair or skin, is produced by polygenes working together. Polygenic traits don't inherit in the same ways as Mendelian traits do. Multifactorial traits will be many polygenic qualities that have been additionally influenced through the environment.

To learn more about polygenic inheritance, here

brainly.com/question/14801080

#SPJ4

8 0

2 years ago

The CRISPR system

Rzqust [24]

Answer:

The correct answer is b. recognizes foreign DNA sequences that have previously entered the cell and directs the Cas proteins to destroy them.

Explanation:

Clustered regularly interspaced short palindromic repeats (CRISPER) is the sequences of DNA found in the genome of prokaryotes and archaea. These sequences are added at a crisper locus in DNA by bacteria through capturing bacteriophage DNA during infection.

Then this sequence is used to detect a similar sequence of bacteriophage during subsequent infection and destroy them by Cas9 enzyme. Cas 9 enzyme uses a crisper sequence as a template to destroy similar phage DNA.

So the CRISPER Cas system provides an adaptive defense mechanism to bacteria against foreign DNA coming from bacteriophage. Therefore the correct answer is b.

3 0

4 years ago

Genetic engineering can be used to create more productive strains of farm animals. By adding genes to an animal’s DNA, the anima

professor190 [17]

Answer:no its wrong to give an animal new genes it can cause many defects and illness for the cattle however it does provide us new nutrients

6 0

3 years ago

A) What type of cells express pattern recognition receptors (PRRs)? B) What is the primary role of PRRs in early host defense?

dimulka [17.4K]

Answer:

A) Dendritic cells and macrophages, although they are also found in other cells that belong, or not, to the immune system.

B) The innate immune response

Explanation:

The immune system is equipped with specialized receptors for the detection of pathogens such as bacteria or viruses, which are called receptors that recognize patterns (PRRs). These proteins are a key element in the innate system and are expressed primarily in antigen presenting cells, such as dendritic cells and macrophages, although they are also found in other cells that belong, or not, to the immune system.

The innate immune response begins with the recognition of highly conserved molecular structures and present in large groups of microorganisms called 'molecular patterns associated with pathogens' (PAMP). This recognition is done by the 'pattern recognition receptors' (RRP) of the host.

The best known bacterial PAMPs are:

Lipopolysaccharides (LPS)

Peptidoglucan

Lipoteic Acids

Mananas (Mannose )

Bacterial DNA

Double stranded RNA

Glucans

These PAMP are essential for the survival and pathogenicity of bacteria.

3 0

3 years ago

If a plant cell is placed in water, how does its central vacuole typically respond?

Mama L [17]

C) it absorbs water hope that helps

6 0

3 years ago