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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.

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How are dogs and fish alike
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They are both Animals ?
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5. Norbert is going to be bred with another dragon that has brown scales and blue fire.
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Answer:

SS+SS=SS

Ff+ff=ff

Explanation:

Dominant alleles are capital

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20 POINTS PLEASE ANSWER QUICK
forsale [732]

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Their Cell walls

Explanation:

Bacteria has a cell made up of peptidoglycan

Archaebacteria has a cell wall made of various compounds)

Their rRNA is different, so different taht tehy are placed on different part of the evolutionary tree.

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The amount of biomass that is produced in an area during a given time would be referred to as?
sweet [91]

Answer:

Explanation:

The amount of biomass that is produced in an area during a given time is referred to as primary production/productivity.

<h3>What is biomass?</h3>
  • Renewable organic material obtained from plant and animal sources if referred to as biomass.
  • Primary productivity is the production of organic compounds through the process of photosynthesis, with the help of solar energy.
  • Primary productivity is measured as biomass produced per unit area over a give time period
  • It is usually expressed either in weight or energy.
  • There are two ways to express primary productivity:

a) Gross Primary Productivity(GPP): Takes into account the total energy produced in the ecosystem.

b) Net primary Productivity(NPP): Takes into account, solely the energy used by the producer for respiration.

To learn more about biomass, refer:

brainly.com/question/25876556

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6 0
2 years ago
An exocrine gland that has an unbranched duct would be classified as a __________.
Firdavs [7]

Answer:

B) Multicellular Simple gland

Explanation:

Exocrine Glands:Glands that secrete their products onto the apical(or epithelia) surface directly or via epithelial ducts or tubes that are connected to the apical surface. These Exocrine glands are composed of highly specialized epithelial cells..

Exocrine glands can either be branched or Unbranched based on the arrangement.

*Multicellular simple glands*:Glands that have an *unbranched duct* into which cells secrete. Each secretory portion empties separately on an epithelial surface.

6 0
3 years ago
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