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olchik [2.2K]
3 years ago
13

A specific type of bacteria reproduces through binary fission every two hours. If there are seven bacteria to begin with, how ma

ny bacteria will there be after four hours? Thanks!
Biology
2 answers:
Lina20 [59]3 years ago
7 0
21 bacteria would be there after 4 hours
Luba_88 [7]3 years ago
6 0

Answer:

28 is your answer

Explanation:

i did it on edge

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The constancy of the chromosome number from one cell generation to the next is maintained through ________. cytokinesis meiosis
melomori [17]

The correct answer is mitosis.

Mitosis is a part of the cell cycle and it is actually a cell division. The mother cell is divided to produce two new genetically identical daughter cells. It is important that during the mitosis is that each daughter cell gets a full set of chromosomes.

3 0
3 years ago
Imagine a genomic researcher who is analyzing the genome of different types of cats. She finds that a particular sequence in the
egoroff_w [7]

Answers:

  1. The sequence encodes a gene that is critical for life and cannot be easily mutated while retaining function.
  2. The sequence is contained in a retrovirus that has infected both species.

1- Explanation:

6.8 million years is a considerable period of time and if the cats were evolved in two different specie then technically they should have substantially different sequences of gene. However, there are some genes that are critical for the survival of the organisms because they encode a function which is equally important for the organisms of a certain category, even if they are different specie.

For example, the essential genes that are involved in maintenance of metabolism, initiation of replication or translation of genes. Therefore, with the period of time, the mutation of even a single nucleotide can be lethal for these genes, and if it happens organism will simply die. So, if one organisms is died that cannot take part in the process of evolution and would clearly be cut off from the process, However, those who survive can undergo some other mutations and become separate specie.

2- Explanation:

A retro virus inserts itself in to the genome of host organisms and become a part of them. It is very difficult to detect the presence of the retro virus until the organism undergoes infection due to its attack. Cats are a favorable host for retroviruses - called lentiviruses which attack the cats to cause a critical syndrome Feline Immunodeficiency Virus or FIV. Therefore, it is possible that same retrovirus having a particular sequence has attacked both cats and the sequences were taken from those cats.

Hope it help!

8 0
3 years ago
Which of the following is not a function of the nervous system
Keith_Richards [23]
<span>The nervous system has numerous functions including the perception, reception and processing of sensory stimuli, control of the reflexes, voluntary and involuntary motor functions and responses, autonomic muscle functions, homeostatic mechanisms, and relay of motor responses to different parts of the body.</span>
4 0
3 years ago
The nucleus contains which are the hereditary material of the cell.
Kaylis [27]

Answer:

b chromosomes

Explanation:

It's in the middle of the cell, and the nucleus contains all of the cell's chromosomes, which encode the genetic material.

8 0
3 years ago
Pay for the right to use it.<br> 30.<br> How can Celera make a profit off of sequencing our DNA?
Shtirlitz [24]

Answer:

Charge us

Sell the info

Explanation:

They can first charge individuals to use the services. For example, similar to 23andme or Ancestry, who provide a service of telling you interesting things related to your health or ethnicity.

They could also sell that data to pharmaceutical companies or other research groups who can use the DNA information for research. The more samples of DNA we have sequenced, the more information scientists have to work with and design drugs and more.

4 0
4 years ago
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