What is the difference between physical and topographic maps?

Biology

2 answers:

VashaNatasha [74]3 years ago

8 0

Explanation:

Physical map: Physical maps display the physical features of a place, including land and water features such as mountains, plains, rivers, and oceans. ... Topographic map: Topographic maps also display physical features, using contour lines instead of color to show changes in the landscape, such as elevation

Nikolay [14]3 years ago

4 0

Topographic maps are three-dimensional representations of landmass that use contour lines to depict elevation.
Geologic maps are special purposes maps that show the geological properties of land- rock types, rock age, bedding planes, folds, and faults.
Topographic maps are used for various purposes such as hiking or mining.

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The lactose (lac) operon in E. coli is an example of a repressed gene when lactose is not available in a cell. In 3-5 sentences

irakobra [83]

Answer:

Please find the detailed explanation of this statement below

Explanation:

Firstly, a repressed gene is a gene whose expression has been inhibited or repressed. The lac operon in E.coli bacteria is a regulatory unit containing structural genes, a single promoter and operator regions. The promoter is the region where the transcription enzyme (RNA polymerase) binds to in order to transcribe the genes in the lac operon. The structural genes in the lac operon can only be expressed in the presence of lactose sugar.

However, in the absence of lactose, LAC REPRESSOR, which is a transcription factor (protein), prevents the binding of RNA polymerase to the PROMOTER region by binding to the OPERATOR region of the lac operon. This inhibits the expression of the lactose genes in the operon.

Note that, the structural genes in the lac operon (lacZ, lacY, lacA) code for proteins that help break down lactose sugar for energy in the E.coli bacteria. Therefore, a bacteria cell with a repressed lac operon will be unable to degrade lactose sugar.

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3 years ago

Write a brief report about what causes cancer cells to develop.

a_sh-v [17]

In order to study the formation of cancer cells, you should study the life cycle of normal cells as cancer cells are abnormal cells.

Actually, Normal cells grow, divides and died after an interval of time. And when this process is break down, cancer cells begin to form. They are usually old cells which don't die after their life cycle.

Hope this helps!

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2 years ago

When the number of organisms increases in an ecosystem, the

Fudgin [204]

I believe B) I think because if there are more animals nothing is going to change but the supplys like food and shelter may decrease but that's not an option

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3 years ago

Read 2 more answers

Which process in eukaryotic cells will proceed normally whether oxygen (o2) is present or absent?

VLD [36.1K]

The correct answer is glycolysis.

Glycolysis is an anaerobic process of splitting a molecule of glucose (6 carbons) to 2 molecules of pyruvate (3 carbons each). Glycolysis does not require the presence of oxygen and will still produce energy, albeit lower than aerobic metabolism. In the absence of oxygen, fermentation can occur wherein pyruvate is further converted into lactate.

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In cats having hair is dominant (H) over not having hair (h). If a male cat that is heterozygous for hair is crossed with a hair

alexgriva [62]

A heterozygous cat has a genotype Hh
A hairless cat has a genotype hh
When crossed, the results could be any of the following:
Hh (with hair)
hh (hairless)
There is a 50:50 chance or 1: 1 ratio that the offspring will have hair.

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3 years ago