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Fed [463]
4 years ago
10

Which cell organelle would NOT be found in a moneran/bacteria cell?

Biology
1 answer:
Katarina [22]4 years ago
7 0

Answer:The Monerans are unicellular organisms. They contain 70S ribosomes. The DNA is naked and is not bound by a nuclear membrane. It lacks organelles like mitochondria, lysosomes, plastids, Golgi bodies, endoplasmic reticulum, centrosome, etc.

Explanation:

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4 0
2 years ago
TLRs are Group of answer choices the coatings of pathogens by complement. present in intact skin, sebum, tears, etc. phagocyte r
densk [106]

Answer: Phagocyte receptors that detect PAMPs

Explanation:

TLRs or Toll-like receptors, are a family of proteins that are part of the innate immune system. TLRs are transmembranous and recognize pathogen-associated molecular patterns (PAMPs), which are groups of chemical characteristics common to certain types of pathogens. Patterns detected by TLRs include lipopolysaccharide, a compound found on the surfaces of Gram-negative bacteria, and double-stranded RNA, which is an integral part of the life cycles of many viruses. These PAMPs are generally important for the survival of the pathogen, so they are well preserved. <u>Activation of these receptors induces inflammatory responses in leukocytes of myeloid lineage, signaling via NF-κB, which is a transcription factor that activates pro-inflammatory genes</u>. Activated TLRs also increase the production of co-stimulatory molecules such as CD80, CD86 and CD40. These proteins, expressed on the surface of antigen-presenting cells, are necessary for the activation of T-lymphocytes by dentritic cells and macrophages already showing antigens in their MHC type II molecules (Major Histocompatibility Complex, they participate in the presentation of antigens to T lymphocytes)

<u>In addition, TLR-mediated signaling on antigen-presenting cells (APCs) plays an important role in linking the innate and adaptive immune responses</u>.

5 0
3 years ago
During photosynthesis, ________ is oxidized, while ________ is reduced.
zubka84 [21]
Glucose is oxidized and co2 is reduced
5 0
3 years ago
Why is the sky blue?
lisabon 2012 [21]

In addition the oxygen in the Earth's atmosphere absorbs wavelengths at the edge of the ultra-violet region of the spectrum. The resulting color, which appears like a pale blue, actually is a mixture of all the scattered colors, mainly blue and green.


Google

3 0
3 years ago
Read 2 more answers
Please sort each of the following statements as being either an external or internal factor that affects the growth of microorga
german

Answer:

External Factors:

*Temperature of food storage during processing.

*Humidity of the storage environment

*Presence of gases, such as CO2, during packaging

*Preservatives, such as salt and sugar

*Handling of food by manufacturers

Internal Factors:

*pH of the food

*Presence of antimicrobial compounds

*Nutrient content (Such as vitamins and minerals)

*Moisture content or water activity

*Protective structure of food, such as feathers, hide and skin

5 0
3 years ago
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