BIOLOGY COLLEGE

Describe 3 characteristics of life that archea bacteria have

Answers

Answer 1
Answer:

methanogens, halophiles, and thermophiles. The methanogens are anaerobic bacteria that produce methane. They are found in sewage treatment plants, bogs, and the intestinal tracts of ruminants.

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Which type of molecule that can be found in living things lacks carbon atoms? protein
carbohydrate
fat
water

Answers

Answer:

hope it helps...

Explanation:

water..(C)

Answer:

Water

Explanation:

Both animal and plant cells are eukaryotic cells. What is the difference between animal and plant cells?OA
Plant cells have cell walls and chloroplasts, but animal cells do not
Animal cells have nuclei and mitochondria, but plant cells do not
OB
OC. Plant cells have nuclei and mitochondria, but animal cells do not
OD. Animal cells have cell walls and chloroplasts, but plant cells do not

Answers

Answer:

A. Plant cells have cell walls and chloroplasts, Animal cells do not.

Explanation:
The correct answer is a,

You are given a sample of unknown cells to examine. Analysis of their nuclei reveals that each cell contains 23 chromosomes. What types of cells might these be?a. Ova
b. skin cells
c. liver cells
d. white blood cells

Answers

Answer: Ova

Explanation: When an egg cell and sperm cell join together, the fertilised egg cell contains 23 pairs of chromosomes. One chromosome in each pair comes from the mother, the other from the father.

In some states, the highway patrol uses planes carrying radar devices to monitor traffic. As the plane flies over traffic, the radar device can tell the officers how fast each car is moving at that moment in time. The radar device determines the car's

Answers

Answer: Radar is a highly upgraded electromagnetic device or technology that helps in determining where an object is located, at what distance it is, and also determines the speed and direction at which an object is moving, and at what angle it is.

It is generally used by the traffic police, for controlling the speed limit of a vehicle or motorbikes in any countries.
It determines the car's velocity, commonly known as speed.

Which of the following would be the last step in the process of DNA fingerprinting? A DNA sample is obtained.
B. Restriction fragments are separated.
C. Restriction enzymes are used to cut DNA into fragments.
D. DNA fragments containing repeats are labeled with radioactive probes.

Answers

Answer:

(D). DNA fragments containing repeats are labeled with radioactive probes.

Explanation:

DNA fingerprinting can be defined as a process, which involves identification of DNA characteristics of an organism as unique in all organisms as fingerprints.

There are total five steps in DNA fingerprinting, which includeisolation of DNA from the cells, digestion of DNA with restriction enzymes, separation of DNA fragments in agarose gel, transfer of DNA fragments to a blotting paper, and labeling of DNA fragments with radioactive probes of specific sequence to see the results.

Thus, the correct answer is option (D) as represents that last step of DNA fingerprinting.

D. Fingerprinting involves binding radioactive probes to label DNA that has been digested by an endonuclease and separated out

Compare epidemic and murine typhus.

Answers

Answer:

The major differences between murine and epidemic typhus are their infection mode.

Explanation:

Typhus is a fever disorder that can be endemic or epidemic in nature. Both disorders are pathological and sociologically similar. Endemic typhus is also called as murine typhus.

murine typhus includes several symptoms such as high fever, rashes on the trunk of the body, nausea, diarrhea, and vomiting and infects by the flea feces contact to cut or open wound.

Epidemic typhus is a similar disorder but with more serious symptoms, including hypotension, bleeding into the skin, delirium, and death and spread by infected body lice.

Thus, the major differences between murine and epidemic typhus are their infection mode.
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