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kiruha [24]
3 years ago
5

What type of organism is a single cell, that is in warm water of a hot spring ?

Biology
2 answers:
Ronch [10]3 years ago
4 0
Either b or d hdhdisgsiwgwiegwjs
CaHeK987 [17]3 years ago
4 0
D.

This is because the bacteria archae can survive in extreme conditions.

Plants and animals are multicellular, while viruses are not considered living.
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Which statement best explains how mutations change the shape of flu virus antigens, preventing the attachment of antibodies?
Setler79 [48]

Answer:

A. Mutations change the nucleotide sequence of the gene, resulting in a different arrangement of amino acids.

Explanation:

Mutations alter the sequence of nucleotides in a molecule of DNA. DNA is used to create mRNA, which is used to create a chain of amino acids that make a protein. If the mutation changes the sequence of DNA, then the sequence of amino acids and the final protein will be different.

This can affect its structure and function. If the protein is a cell surface protein, and its structure is significantly altered, antibodies may no longer recognise and bind to the protein.  

4 0
2 years ago
Which of the following is true regarding cultivation and isolation of animal viruses? View Available Hint(s) Which of the follow
Studentka2010 [4]

completed question'

.....culturing viruses that requires a human host

Answer:

Diploid cell culture lines, developed from human embryos, are widely used for culturing viruses that require a human host

Explanation

Viruses can not thrive in a non-living host or artificial media.They  are intracelular parasites  which needed living host to replicate . Cultures lines from Human embryo  in are therefore used for culturing viruses of human host, so that its mode of replication and gene expression can be studied, and therefore its virulence can easily be studied.

This method have the advantage that;

1.there is no need to make use of the whole animal rather,on a tiny tissue needed can be isolated for culture.

2. the cells growth is continuous,and can be preserved in liquid Nitrogen and renew for future culture

3. cells can be grown in different containers,  with ability to decide the number of cells needed.

Temperature is kept at optimum for human in the culture at  37 degree centigrade, nutrients are provided, NaHC03 as buffers for C02, and  the medium is humidified.

3 0
3 years ago
Describe homeostasis?
Ann [662]

Answer:

Homeostasis is the process of maintaining a constant internal environment of the body with the help of certain mechanisms such as feedback loops.

Explanation:

Homeostasis refers to the maintenance of a relatively constant internal environment of the body. It includes maintaining several parameters such as acid-base balance, blood glucose level, body' temperature, etc. within the narrow range.

Homeostasis is mainly maintained with the help of negative feedback loops wherein the deviation of any parameter from the normal physiological range is counteracted and restored.

For example, the blood glucose level remains within the range of 70 and 110 milligrams of glucose per 100 milliliters of blood under normal physiological conditions. Any deviation from the range is restored with the help of pancreatic hormones insulin and glucagon.

6 0
3 years ago
Se efectúa un experimento en el que a la planta 1 se le suministra CO2 normal pero agua que contiene átomos de oxígeno radiactiv
algol [13]

Answer:

The Oxygen liberated in photosynthesis comes from photolysis of water.

The CHO formed from Calvin Cycle during photosynthesis comes from reduction of CO2 with H+ of photolysis of water.

Therefore,since Plant 1 contains labeled Oxygen(from water) it will give radioactive Oxygen as the byproduct of its photosynthesis. It CHO is normal.

However,Plant 2, will contain radioactive CHO,because its radioactive CO2 will be reduced by H+  from photolysis of water to form radioactive labeled  carbohydrate(CHO)

Explanation:

6 0
3 years ago
Why is it important for something to satisfy all six characteristics of life in order to be considered a living thing?
Paraphin [41]
We all know that all living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, growth and development, regulation, homeostasis, and energy processing. When viewed together, these characteristics serve to define life.
6 0
2 years ago
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