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
9966 [12]
3 years ago
7

The first cells activated by the antigens are called ?

Biology
1 answer:
juin [17]3 years ago
8 0

Answer:

Effector B- cells.

Explanation:

These are also known as plasma B cells- and are pretty much the cells that secrete antibodies against the antigen in question. They also, through a cascade of events, produce activated T-cells (T-helper and T-cytotoxic cells). The latter cells organize cell-mediated immune response against the antigen.

You might be interested in
Durairajanayagam D, Agarwal A, Ong C. Causes, effects and molecular mechanisms of testicular heat stress. Reproductive biomedici
harkovskaia [24]

Temperature affects spermatogenesis, which functions best at body temperatures just a little lower than those.

<h3>Abstract:</h3>

To keep testicular temperatures below those of the body core, adequate thermoregulation is essential. The process of mammalian spermatogenesis and the resulting spermatozoa are negatively impacted by elevated testicular temperature. Therefore, sperm quality can be affected and the likelihood of infertility is increased by thermoregulatory dysfunction resulting in heat stress. This article reviews a variety of internal and external factors that may lead to testicular heat stress. We go into more detail on how heat stress affects the spermatogenesis process, the resulting epididymal spermatozoa, germ cells, and the alterations that result in the testis.

We also go over the chemical reactions of germ cells to heat exposure and potential processes, such as apoptosis, DNA damage, and autophagy, that could lead to heat-induced germ cell damage. Further explanation is provided for the intrinsic and extrinsic processes involved in the complex mechanism of germ cell death. These intricate apoptotic pathways ultimately result in the demise of germ cells.

Learn more about spermatogenesis here:

brainly.com/question/1594056

#SPJ4

3 0
2 years ago
Who created the lightbulb?
Nimfa-mama [501]

Answer:

Thomas Eddison

Explanation:

Well there are 8 but the one who created it by hand was Thomas Edison

3 0
2 years ago
Read 2 more answers
Making products from recycled materials __________.
Travka [436]
The answer is A. Uses too much energy.
4 0
3 years ago
Maria is researching a family of elements for her high school chemistry class. She is using her text book for information about
Sati [7]
B because the periodic table tells you the groups of the elements
3 0
3 years ago
One of the most important scientific discoveries was penicillin. Research the discovery of penicillin, what produces this drug,
artcher [175]

Answer:

It is essentially a broth culture filtrate of the penicillium mould.

Explanation:

  • Alexander Fleming invented penicillin an antibiotic in 1928. These have been rated as the most important scientific discovery, being among the first antibiotics to be effective against bacterial infection.
  • Penicillin belongs to different families that are selective against a large variety of bacteria.
  • In fact, this antibiotic was discovered by fleming and accident in which he left a platter containing staphylococci open and was contaminated by green mould. There was an area of inhibited bacterial growth around the mould from which he inferred that the mould produced a material that inhibited bacterial growth. This was found to be a penicillium mould through further study.
  • I assume penicillin is the most significant discovery so far because it was the first antibiotic ever discovered against bacterial infection in the absence of any drug.

4 0
3 years ago
Other questions:
  • In exocytosis, the membrane package fuses with _____.
    6·1 answer
  • Humans must depend on the environment for their survival
    15·1 answer
  • Strawberries can reproduce by means of runners, which are stems that grow horizontally along the ground. At the region of the ru
    10·1 answer
  • Which type of organelle or structure is primarily involved in the synthesis of proteins, lipids, phospholipids, and steroids? Qu
    11·1 answer
  • Is umbrellaology a science?
    11·1 answer
  • ___ have many angiosperm-like features
    15·1 answer
  • Type in another hypothesis for the question Does Lactaid break down the lactose in milk into glucose and galactose?
    12·1 answer
  • Which best describes the structure of dna
    8·2 answers
  • After watching the video on flooding, what would be a major change that can
    6·1 answer
  • PLEASE HELP!!! (I will mark brainliest)
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!