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morpeh [17]
2 years ago
8

Why was it impossible to know about bacteria 5,000 years ago

Biology
2 answers:
Alexxx [7]2 years ago
8 0

Answer:

Im assuming because microscopes hadnt been invented. Also the idea of communicable diseases wasnt around so people assumed it was things like god that caused illness

Cerrena [4.2K]2 years ago
3 0

Answer:

A true understanding of the physiology of these bacteria and their roles in ecology, host health, and natural product production requires their cultivation in the laboratory. Recent advances in growing these species include coculture with other bacteria, recreating the environment in the laboratory, and combining these approaches with microcultivation technology to increase throughput and access rare species. These studies are unraveling the molecular mechanisms of unculturability and are identifying growth factors that promote the growth of previously unculturable organisms. This minireview summarizes the recent discoveries in this area and discusses the potential future of the field.

Explanation:

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The cells involved in innate immunity, whose absence increases the chances of developing malignant tumors, are _____.
Alexeev081 [22]

Answer:

The correct option is B (natural killer cells).

Explanation:

Natural killer cells: They are defined as the type of cytotoxic lymphocyte which are critical to the innate immune system. The NK cells play an important role in to provide rapid response to tumor formation, virus infected cells, and acting after three days of infection.

While cancer cells die, they release some antigens, than these antigens are recognized by the immune system, and later they are presented on the immune cells which are known as antigen presenting cells. So, if these cells are absent than they increase the chances of developing malignant tumors.

4 0
3 years ago
Among the invertebrate phyla, phylum arthropoda is unique in possessing members that have.
Ostrovityanka [42]

Answer:

Wings

Explanation:

The most unique feature among phylum Arthropoda is that some of its members have wings. No other invertebrate has winged species!

3 0
2 years ago
How does natural selection cause a change in a population?
Sunny_sXe [5.5K]
The correct answer is C) only some survive because variation exists
5 0
2 years ago
Sidra has a baby that was born at 27 weeks. her baby is considered:
andreev551 [17]

The baby is considered as extremely preterm infant.

The babies that are born alive before the completion of a period of 37 weeks of pregnancy are the preterm babies. There are three categories into which preterm born babies are distinguished: moderate to late preterm for 32-37 weeks, very preterm for 28-32 weeks and extremely preterm for less than 28 weeks.

Premature births are one of the major causes of death of children under the age of 5 years. The babies that survive may have problems and may be  visual or hearing impaired, may have learning disabilities etc.

7 0
2 years ago
Read 2 more answers
PLEASE HELP DUE VERY SOOONNNN PLEASEEE HELPPP
FrozenT [24]

Answer:

how can I help u with.

I can't see any pictures

u post a question picture.

I can answer u

7 0
2 years ago
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