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AlexFokin [52]
3 years ago
12

NASA has published a list of criteria for identifying fossil bacteria in samples from Mars, as part of a search for evidence of

life. Which of the following is good evidence for the presence of bacterial cells?
a. The cell size of 0.5 to 2 microns
b. Three-dimensional organization of cells in a starburst pattern
c. Absence of carbon in the material
d. No evidence of water in the surrounding mineral
Biology
1 answer:
il63 [147K]3 years ago
4 0

Answer:

The correct answer is - option A.

Explanation:

Among all of the given options the best character of the bacterial cell is the size of the cell which ranges in between 0.5 to 2 microns. The best evidence for the presence of bacterial cell is the smaller size of the cells.

Rest of the characters provided in the options does not matches with the characteristics of bacterial cells and not related to the bacteria.

Thus, the correct answer is option A.

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Answer:

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4 years ago
Phenotype is a cell-cycle phase distinct from the G1 phase of interphase; a cell in G0 is not preparing to divide. Is this true
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7 0
3 years ago
Drag the labels to their appropriate locations in the flowchart below, indicating the sequence of events in the production of fr
matrenka [14]

(Complete question attached)

Answer:

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Explanation:

Both strands of parental DNA acts as a template for the synthesis of new DNA. The site of synthesis is called replication fork because the daughter strands look similar to <em>two-pronged fork.</em> The strands formed from Okazaki fragments(short sequences of DNA nucleotides) is called the <u>lagging strands,</u> which is synthesized in short fragments and in the opposite direction. While the strand that is synthesized continuously and in the same direction as the movement of the replication fork is called the <u>leading strand.</u> Both strands are synthesized in a 5'→3' direction. DNA ligase join these fragments together.

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