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Readme [11.4K]
3 years ago
6

PARTA

Biology
2 answers:
love history [14]3 years ago
8 0

Answer:

A The bacteria are breaking down sugars in the absence of oxygen

Explanation:

Bacteria use their own energy to break down sugar without the use of oxygen

erastovalidia [21]3 years ago
6 0

Answer:

A. The bacteria are breaking down sugars in the absence of oxygen.

Explanation:

Bacteria are microscopic single-celled organims. These organisms may produce their own source of chemical energy, or consume and absorb chemical energy made by producers.

They break down chemical energy like glucose through lactic acid fermentation in their cytoplasm, without the presence of oxygen.

In Glycolysis:

2 molecules of ATP are used to break up glucose into 2 molecules of pyruvate, 4 ATP and 2 electron carrying NADH molecules. Since 2 ATP are used, a net 2ATP are produced by this process.

Then, pyruvate is converted to lactic acid, producing 2 NAD+, used as electron carriers.

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Sergei Winogradsky Choose one: A. discovered microbial fermentation. B. developed a pure culturing system using agar. C. identif
NeX [460]

Answer:

D. Discovered chemolithotrophs in natural enviroments.

Explanation:

Sergei Winogradsky was a russian microbiologist. He observed in his research with genus of bacteria <em>Beggiatoa, </em>they were able to oxidize hydrogen sulfide as an energy source. Being the first example known of lithotrophs (organisms that use inorganic substrate in order to obtain energy).

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3 years ago
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Which pair of objects will have the greatestforce of gravity between them
disa [49]

Answer:

what objects? because a dresser and a feather the answer would be dresser

Explanation:

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3 years ago
What is the relationship between Microvilli of gut, epithelium, glucose, circulatory system, capillary fenestrations, glucose/AT
IgorLugansk [536]

All of these are the components of the catabolic pathway or using the nutrients to provide energy from it. The breakdown of food molecules begins in the mouth and continues to the small intestine. The nutrients are absorbed through the wall of the small intestine which. The surface of the intestine wall is specially modified (contains a huge number of hair-like structures-microvilli) which increase nutrient absorption. (more area for nutrients to be absorbed).  The digestive tract is lined with mucosa which consists of simple columnar epithelial cells. Monomer subunits of the food, like glucose are than absorbed and diffused down a concentration gradient into capillary blood. Glucose is converted into pyruvate molecules through the process of glycolysis. Catabolism ends in the major energy-converting organelle, the mitochondrion, where the ATP is produced.


8 0
3 years ago
When blood that is high in carbon dioxide exits the heart, it immediately enters which body system?
juin [17]

Answer:

The Circulatory System

Explanation:

When blood is rich in carbon dioxide it leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs. (All of which have to do with the circulatory system)

6 0
2 years ago
Which of the following could be a nucleotide of DNA?
loris [4]
A. deoxyribose + phosphate group + thymine 
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