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Leviafan [203]
3 years ago
12

How did agriculture help build civilizations?

Biology
1 answer:
suter [353]3 years ago
3 0
<span>agriculture  led to civilization because people no longer had to move to get food. Before farming, people migrated with the animals and this caused a nomadic lifestyle. In addition, farming allowed for surplus to be made, and thus traded with other people. This allowed people to specialize in different occupations instead of doing everything for themselves. </span>
You might be interested in
The only cellular respiration process that can be considered anaerobic is _____.
Nesterboy [21]

The correct answer is fermentation.

The production of energy needs oxygen. The electron transport chain, where the most of ATP is produced, needs a huge input of oxygen. However, there are various species, which have produced methods to continue the metabolism in the absence of oxygen, or can move from aerobic to anaerobic cell respiration when oxygen is enough.

At the time of cellular respiration, some of the living species utilize an organic substance as the eventual electron acceptor. The procedures that utilize an organic molecule to reproduce NAD+ from NADH are in a combination known as fermentation.

In comparison, some of the living species utilize an inorganic substance as an ultimate electron acceptor. Both the procedures are known as anaerobic cellular respiration, where the species are obtaining energy for their application in the absence of oxygen.

7 0
3 years ago
The cAMP receptor protein (CRP) is said to be responsible for positive regulation of the lac operon because ________. (A) CRP bi
Blababa [14]

The cAMP receptor protein (CRP) is said to be responsible for positive regulation of the lac operon because (D) CRP bound to the CRP-binding site stimulates the transcription of the lac operon.

CRP is a regulatory protein. It binds to the cAMP and causes a conformational change. This allows the CRP to bind to a specific site at the promoter region of the DNA. This then activates the transcription process.

Lac operon is a group of genes that allow the uptake of glucose in bacteria. There are four components of lac operon:  regulator gene, promoter gene, operator gene and structural genes. The machinery of operon is turned on the lactose itself.

To know more about CRP, here

brainly.com/question/25387504

#SPJ4

4 0
2 years ago
Which of the following is not a biogenous sediment?
AleksandrR [38]
Biogenous sediment is sediment created from the shells of organisms that were once alive. These shells contain substances such as calcium, silicon and phosphorus. However, these shells do not contain manganese. Therefore, the answer is A. manganese nodules.
7 0
3 years ago
Read 2 more answers
Describe the difference between aerobic and anaerobic respiration;
Butoxors [25]

Answer:

aerobic respiration uses oxygen and the steps are: 1. glycolysis 2. Krebs cycle 3. oxidative phosphorylation

anaerobic respiration does not use oxygen and the steps are: 1. glycolysis 2. alcohol fermentation

Explanation:

I do not know the other 2

7 0
3 years ago
The light-independent reactions of photosynthesis, also known as the Calvin cycle, must repeat six times in order for a cell to
tensa zangetsu [6.8K]

Answer:

Molecules brought in: 3CO2, 9ATP, 6NADPH

Molecules Produced: 1G3P, 9ADP, 6NADP+ +H+

Molecules used and Regenerated: 3RuBP, 5G3P

Explanation:

1. Molecules brought in and utilized in the light-independent reaction or Calvin cycle:

-CO2 from outside the cell

-Molecules take energy from the light-dependent reactions

2. Molecules produced during the light-independent reaction or Calvin cycle that leave the cycle:

-Energy-carrier molecules that have lost some energy\

-3-carbon molecules that store energy

3. Molecules produced in the cytoplasm from the end products of the Calvin cycle:

-Organic molecules such as glucose

Thus, Molecules brought in: 3CO2, 9ATP, 6NADPH

Molecules Produced: 1G3P, 9ADP, 6NADP+ +H+

Molecules used and Regenerated: 3RuBP, 5G3P

7 0
3 years ago
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