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aivan3 [116]
3 years ago
13

Why don't cyanobacteria and bacteria reproduce by mitosis? Because:

Biology
1 answer:
AVprozaik [17]3 years ago
7 0

Answer:

They do not contain chromosomes. (Ans.C).

Explanation:

Cyanobacteria also known as blue-green algae, they are heterogeneous group of photosynthetic prokaryotic organisms. Like prokaryotes such as bacteria, cyanobacteria lack endoplasmic reticulum, mitochondria, membrane bound nucleus, and Golgi apparatus. Bacteria are simpler than other organisms, and single celled microbes.

Both bacteria and cyanobacteria reproduce through the asexual method either by binary fission in unicellular, multiple fission in colonial form or by spore formation, and fragmentation in filamentous species.

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The operon model of the regulation of gene expression in bacteria was proposed by _____.
AlladinOne [14]

Answer: D. Jacob and Monod

Explanation:

An operon is a region of DNA that consists of a single gene regulated by more than one promoter. An operon is a region of RNA that consists of the coding regions of more than one gene. RNA polymerase is the enzyme that binds to promoters and transcribes the coding regions of genes into RNA.

Jacques Monod was the first to demonstrate the preference for certain substrates over others through his studies of E. coli’s growth when cultured in the presence of two different substrates simultaneously.

6 0
3 years ago
This is an organ of digestion. It continues the process of mechanical digestion; it secretes gastric juices that continue the pr
VladimirAG [237]
I think the answer will be a heart
6 0
2 years ago
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ii. True or False: Estimates of body composition obtained with dual-energy x-ray absorptiometry need to be interpreted with part
Bogdan [553]

Answer: True

 

Explanation:

The dual energy x-ray absorptimetry is a technique that is used for measuring the bone mineral density. This technique utilizes the two X-ray beams with different levels of energy. The soft tissues are subtracted in this procedure and the beam is absorbed by the bone. This technique is useful for diagnosis of osteoporosis, to check and diagnose the infected, fractured and healing bones.

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Discolored skin, aches and tenderness in the limbs, stiffness in joints and weight gain.

The retained excess fluid may react with the X-ray beam hence, will interfere in the process of diagnosis. Thus caution should be taken for such individuals.

7 0
2 years ago
What types of individuals in a population are represented by the two ends of a bell curve?
Kitty [74]
<span>The individuals with extreme variations of a trait.</span>
4 0
2 years ago
Refer to the food web above to answer the following: hunting has significantly reduced the snake population. Explain at least tw
frutty [35]

Answer:

I would need to see the food web to provide accurate answers; but,

mouse, rat, small animals, herbivores population would increase.

Anything that the snake eats would increase in population.

Explanation:

Anything that eats the snake would decrease.

4 0
3 years ago
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