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
AVprozaik [17]
3 years ago
13

Which muscles work in pairs? 1. cardiac muscles 2. skeletal muscles 3. smooth muscles

Biology
1 answer:
Tpy6a [65]3 years ago
5 0
Skeletal muscles work in pairs
You might be interested in
While examining a patient, the nurse notices that the patient has scales on the eyebrows. which condition would the nurse expect
deff fn [24]
Hello!

The correct answer is: Seborrhea. The nurse would expect the condition Seborrhea.


I hope this was helpful! c:
3 0
3 years ago
Read 2 more answers
DNA fingerprinting bands are also referred to as
Leni [432]
I am no expert but I think the correct answer is C.

3 0
3 years ago
Read 2 more answers
As an extensionist ,In what way you help the farmers or other people in the communinty?​
Shtirlitz [24]

Answer:

by extending taps near their home

4 0
3 years ago
you collect samples of soil from a nearby field and isolate and sequence the DNA of several microorganisms you find there. This
timama [110]

Answer:

Soil Microbiome

Explanation:

Soil Microbiome is the word used to describe all the micro-organisms that live inside the soil. This includes bacteria, viruses, amoeba, protozoans and fungus. When assessing the soil microbiome this will also give insight on the type of plants that can function well it this kind of soil as well as describing the type of interactions that are made in this area. A specific soil microbiome is in sense it's own complex eco-system.

7 0
3 years ago
Following antigenic stimulation, phosphorylation of _________ relieves inhibition of the transcription factor
Maru [420]

Answer: zap70, ITAM.

Explanation:

An antigen is any substance that is capable of stimulating an immune response by activating lymphocytes, which are the body’s infection-fighting white blood cells. Examples of antigens could be proteins that are part of bacteria or viruses or components of serum and red blood cells from other individuals, all of them are foreign antigens originated outside the body. However, there can also be autoantigens (which are self-antigens), originated within the body. In normal conditions, the body is able to distinguish self from nonself. <u>And the antigens that represent a danger induces an immune response by stimulating the lymphocytes to produce antibody or to attack the antigen directly</u>. This is called an antigenic stimulation of the immune system.

ZAP-70 (Zeta-chain-associated protein kinase 70) is a protein that is part of the T cell receptor, thereby it plays a critical role in T-cell signaling. When the TCR (receptor of T cells) is activated by the presentation of the specific antigen through the MHC, a protein called Lck acts to phosphorylate the intracellular CD3 chains and the ζ chains of the TCR complex, allowing the binding of the cytoplasmic tyrosine kinase, ZAP-70. Lck then phosphorylates and activates ZAP-70, which in turn phosphorylates another molecule in the signaling cascade called LAT (short for Linker of Activated T cells), a transmembrane protein that serves as an anchor site for several other proteins. The tyrosine phosphorylation cascade initiated by the Lck culminates in the intracellular mobilization of calcium ion (Ca2+) <u>and the activation of important signaling cascades within the lymphocytes.</u> These include the Ras-MEK-ERK pathway, which is based on activating certain transcription factors such as NFAT, NFκB and AP-1. These transcription factors regulate the production of of certain gene products, most notably cytokines such as interleukin-2 that promote the long-term proliferation and differentiation of activated lymphocytes.

The ITAM motifs (immunoreceptor tyrosine-based activation motif) are sequences of four amino acids present in the intracellular tails of certain proteins that serve as receptors within the immune system. Thus, <u>some receptors such as the TCR have ITAM sequences that, when activated, trigger an intracellular reaction based on consecutive phosphorylations</u>.  Kinases are recruited for this purpose.

So, ZAP-70 is a protein tyrosine kinase with a role in T-cell receptor signal transduction. During T-cell activation, ZAP-70 binds to ITAM and becomes tyrosine phosphorylated. The binding of ZAP-70 to the phosphorylated ITAM is able to activate its kinase activity, <u>and relieves the inhibition of the transcription factor which regulates genes that are involved in the immune reaction</u>.

6 0
3 years ago
Other questions:
  • Who painted the image seen below?<br> 4002-01-02-04-00_files/i0270000.jpg
    7·2 answers
  • Are plants autotrophs or heterotrophs? what does this mean?
    15·1 answer
  • The temperature of a city is 32°F, or 0°C. What form will the precipitation most likely take when it reaches the ground?
    13·1 answer
  • Producers are able to:
    5·2 answers
  • Which of the following is a nucleotide found in dna
    7·1 answer
  • Are mitochondria found in plant cells, animal cells, or both??<br> Please help:)
    14·2 answers
  • LOOK AT THE PICTURE!!
    13·1 answer
  • What determines the sex of an organism, the male sperm cell or the female egg cell? ______
    12·2 answers
  • What're the two body systems opossums use to fake their death?
    5·1 answer
  • Plz help
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!