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ziro4ka [17]
3 years ago
6

How do veins differ from arteries

Biology
1 answer:
Elan Coil [88]3 years ago
3 0

Answer: Veins carry deoxygenated blood (oxygen poor blood) from other parts of the body to the heart while arteries carry oxygenated blood (oxygen rich blood) away from the heart to other parts of the body.

Explanation: Arteries carry oxygenated blood with the exception of pulmonary artery while veins carry oxygen poor blood with the exception of pulmonary vein.

Arteries carry blood away from the heart while veins carry blood towards the heart.

Arteries have thick, elastic, mucscular walls while veins have thin, less elastic walls.

Arteries have smaller holes inside through which blood passes while veins have wider holes.

Blood flows through the arteries at high pressure while blood flows through the veins at low pressure.

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The organisms native to an area will impact the types of soil found in that area.
7nadin3 [17]

Answer:

True!

Explanation:

The development of soils can be significantly affected by vegetation, animal inhabitants, and human populations. Hope this helps!

5 0
3 years ago
Living things are composed only of organic elements, whereas nonliving things are made up of inorganic elementsa. Trueb. False
Scilla [17]

Answer: option B) Statement is false

Explanation:

Living things are NOT composed only of organic elements. Organic elements refers to compounds of Carbon, whereas living things such as Vertebrates (man, shark, lion etc) possess bones, teeth with INORGANIC components like phosphorus, magnesium, calcium.

Also, nonliving things are NOT made up of only inorganic elements. A good example is the air we breathe, it is non-living, yet contains carbon in the form of Carbiondioxide.

7 0
3 years ago
explain how repressible and inducible operons differ and how those differences reflect differences in the pathways they control
Sonja [21]

Answer

Operons are cluster of coordinated genes, including structural genes, an operator gene, and a regulatory gene.

Explanation:

In the The repressible operons, The transcription is usually on and repressor is in inactive form, So the specific genes are transcribed. While a regulatory molecule act as corepressor and binds to repressor protein to activate it. The repressor protein cause the inactivation of repressible operon (as the name indicate). E.g., Tryptophan Repress the trp operon.

A high level of product act as regulatory molecule (Corepressor) and turn off the operon, So anabolic pathways or synthesis of essential components are controlled by repressible operon.

In the Inducible operons, the transcription is usually off and repressor is in active form. So there is no transcription of genes. Specific Metabolite cause the activation of operon  e.g lactose cause the induction of lac operon.

As a metabolite induces the operon, So they control the Metabolic pathways or breakdown of a neutrient.

7 0
3 years ago
In the electron transport system
antoniya [11.8K]

Answer:

A. NADH and FADH2 both donate electrons at the same location.

Explanation:

In the respiratory chain, four large protein complexes inserted into the mitochondrial inner membrane transport NADH and FADH₂ electrons (formed in glycolysis and the Krebs cycle) to oxygen gas, reducing them to NAD⁺ and FAD, respectively.

These electrons have great affinity for oxygen gas and, when combined with it, reduce it to water molecules at the end of the reaction.

Oxygen gas effectively participates in cellular respiration at this stage, so its absence would imply interruption of the process.

NADH and FADH₂ electrons, when attracted to oxygen, travel a path through protein complexes, releasing energy in this process.

The energy released by the NADH and FADH₂ electrons in the respiratory chain in theory yields <u>34</u> <u>ATP</u>, however, under normal conditions an average of 26 ATP molecules is formed.

If we consider that these 26 molecules are added to the two ATP formed in glycolysis and two ATP formed in the Krebs cycle, it can be said that cellular respiration reaches a maximum yield of 30 ATP per glucose molecule, although theoretically this number was 38 ATP per glucose molecule.

5 0
3 years ago
Stuart is listing the changes to matter and energy that occur during the process of photosynthesis. Which of these examples shou
Morgarella [4.7K]

Answer:

C. Changes that convert light energy into chemical energy stored in carbohydrates

Explanation:

Just had this question on a bio assignment.

3 0
2 years ago
Read 2 more answers
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