BIOLOGY COLLEGE

Cells responsible for histamine release

Answers

Answer 1
Answer:

Answer:

Mast Cells

Explanation:

Mast cells release histamine in the blood stream, when they detect a substance that triggers an allergic reaction, also called an allergen.

Related Questions

Which process do all organisms do when performing cellular respiration?
) You treat some cells with a proteolytic enzyme that is too large to penetrate the cell membrane (Set 1). Another group of cells is made permeable before treatment with the enzyme (Set 2). A third set of cells was not treated with the enzyme at all (controls). Proteins are then extracted from the three different sets of cells and applied to an SDS-PAGE gel. Protein W migrates to the same distance on a gel of proteins from Set 1 and Set 2; Protein W migrates a shorter distance on gels of proteins extracted from the control group than on gels of proteins extracted from Set 1 and Set 2 treated cells. Protein X migrates to the same distance on a gel of proteins from control cells and the gels of the proteins from Set 1 and Set 2. Protein Y migrates a longer distance when extracted from Set 1 cells than does protein Y in the controls; Protein Y moves an even larger distance in the gel of the extracts from Set 2. Protein Z migrates the same distance on gels of proteins from the controls and the proteins extracted from Set 1, but it migrates a longer distance in extracts from Set 2 cells. Which protein is exposed only on the exterior of the cell?
3. How many times can the nuclear DNA replicate during the life cycle of a cell? *AlwaysOnly onceTwiceMany times
Please help! will mark brainlist!!! Which object is hotter in terms of its kinetic energy: the cup of coffee or the iceberg? Explain the reason for your answer in terms of your understanding of the kinetic molecular theory of matter. ​
15 Points BrainliestWhich resource would be the best choice to learn more information about studying martial arts?Dance studioLocal bait shopPhone bookPublic Golf Course

Which statement describes DNA​

Answers

Answer:

DNA stores an organism’s genetic code.

Answer:

B

Explanation:

I did the test

List five item that can be found in a science portfolio

Answers

Answer:

  1. A letter to the reader outlining each portfolio item
  2. A list of term definitions that will be helpful to readers
  3. A collection of individual goals for the year, selected and updated by students monthly, quarterly, etc.
  4. Graphics—charts, concept diagrams, timelines, photographs, etc.—showing important data such as test scores
  5. Book excerpts or quotations chosen by the student
  6. A chart tracking every free-choice book a student has read that year
  7. Reading logs
  8. Photographs of students working
  9. Anecdotal notes from one-on-one or small group time with students (e.g. guided reading notes)
  10. Video recordings of readings or performances (for ePortfolios)
  11. A sample paragraph of writing featuring a few key writing techniques
  12. Sample essays of various types—descriptive, narrative, explanatory, expository, persuasive, cause and effect, and compare and contrast are all good options
  13. Technical writing such as a process analysis essay featuring student-drawn diagrams
  14. Creative writing samples, including stories, poems, songs, and scripts
  15. A collection of graded math quizzes showing performance trends

Actin, myosin, and troponin are:A) ligaments
B) tendons
C) muscle protein
D) bones
E) types of ligaments

The connective tissue holding bone to bone is a;
A) tendon
B) muscle
C) smooth muscle
D) ligament
E) A and D

Answers

Answer:

1. C: muscle protein

2. D: ligament

1. Actin and myosin are proteins that form contractile filaments of muscle cells.  Troponin regulates muscular contraction and is found in skeletal and cardiac muscle fibers.

2. Tendons connect muscle to bone.  Muscles provide movement.  Smooth muscles behave involuntarily.  Ligaments connect bone to bone.

Which of the following is TRUE about most newborns’ hearing and vision? Group of answer choices.a) Their hearing improves during the first four months.
b)Their vision is better than their hearing.
c)Their hearing and vision are about the same.
d)Their hearing is better than their vision.

Answers

It  is TRUE about most newborns’ hearing and vision that Their hearing is better than their vision. Correct Option is 4.

Most newborns have better hearing than vision. Newborn infants typically have a well-developed auditory system, allowing them to respond to sounds soon after birth. They can perceive a wide range of auditory stimuli and are sensitive to different frequencies and intensities of sound.

On the other hand, their visual system is not fully matured at birth, and newborns have limited visual acuity and color vision. Their ability to focus on objects and perceive details improves gradually over time as their visual system develops. Therefore, during the early stages, newborns generally have better hearing capabilities compared to their vision.

Try to know more about newborns:

brainly.com/question/30705506

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Answer:B

Explanation: At birth, a newborn's eyesight is between 20/200 and 20/400. Their eyes are sensitive to bright light, so they're more likely to open their eyes in low light.

The michaelis constant (km) is analogous to _______ that an enzyme has for its substrate. if the km drops then the enzyme has (gained / lost) affinity and if the km increases then the enzyme has (gained / gained) affinity.

Answers

The Michaelis menten constant (Km)

Is analogous to the affinity or the compatibility the particular enzyme has for its given substrate.

If the km drops, then the enzyme has reduced or lost affinity and likewise an increase in the affinity or gain is based on an increase in the value for km.

Which of the following relies on amolecule binding to the repressor to prevent the repressor from binding to the operator? a. repression
b. gene expression
c. an operon
d. induction

Answers

Answer:

d. induction

Explanation:

A repressor is a protein capable of inhibiting target gene expression by binding to both operator sites and gene silencers. A DNA-binding repressor inhibits the interaction between the RNA polymerase and the DNA promoter sequence, thereby suppressing transcription into RNA. Moreover, the RNA-binding repressor is a protein that binds to the messenger RNA (mRNA) molecule in order to prevent its translation into protein. An inducer can start transcription by interacting with the repressor, thereby separating it from the DNA operator sequence.
Other Questions
For each nonhuman species, what percent of its amino acids are identical to the human sequence of
A water strider sits on the surface of a pond. This occurs because
If you fertilize your houseplant too often, you may find that it looks wilted even when the soil is wet. Explain what has happened in terms of water potential?
You work in a laboratory that studies the molecular biology of tribbles. [Although tribbles are an alien life form, assume here that the molecular biology of tribbles is identical to that of eukaryotes on Earth.]Your lab has a genomic library of tribble DNA, as well as a cDNA library made with mRNA extracted from whole tribbles. The lab also has a collection of live tribbles that can be used to isolate RNA or DNA, and a supply of fixed tribbles that can be stained for gene expression.Your advisor provides you with a cloned 100 bp DNA fragment that represents part of the protein-coding region of a tribble gene. Using the tools described in the previous paragraph and the molecular biology techniques we have discussed in class, how would you accomplish each of the following aims? Note: try to come up with the simplest and modest direct approach that will give you the desired information.A. Determine the amino acid sequence of the complete protein produced by that gene.B. Determine whether or not the gene contains introns.C. Determine whether the RNA produced by that gene experiences alternative splicing.D. Determine the length of the mature mRNA(s) produced by the gene. This includes the UTRs and the poly-A tail.E. Determine which cells in the tribble body do and do not express mRNA from this gene.F. You discover a blood stain in the lab, and you want to determine whether it is human blood or tribble blood. How can you do this using the molecular biology tools described above?