Which of the following is NOT a living organism? A. a muscle cell B. an amoeba C. a rosebush D. an earthworm

Define histology<br><br> difference between carbon reduction and alumino thermite process

Fittoniya [83]

Answer:

The key difference between carbon reduction and thermite process is that in carbon reduction, we can extract a base metal from its ore via reduction of fused metal oxide using carbon whereas, in thermite process, we use aluminium powder instead of carbon. ... Thus, we can obtain free metal eventually

Explanation:

I barely got the answer

4 0

3 years ago

Classify each RNA post-transcription processing event according to whether it occurs in prokaryotes or eukaryotes.

tigry1 [53]

'RNA is transcribed and translated in the cytoplasm', 'transcription produces an mRNA ready for translation' and 'RNA is proofread for errors' occur in prokaryotes, whereas '5′ cap, 3' poly-(A) tail and RNA splicing' occur in eukaryotes.

The prokaryotic cells (e.g., bacterial cells) do not contain cell nuclei, thereby the messenger RNA (mRNA) must be transcribed and translated in the cytoplasm.

During prokaryotic transcription, the RNA transcript is proofread for errors. In bacteria, DNA polymerases proofread the transcript by using their 3’ → 5’ exonuclease activity.

In eukaryotic cells, RNA processing consists of several mechanisms:

A 7-methylguanosine cap (5′ cap) is added to the 5′ end of the precursor messenger RNA (pre-mRNA).

A 3' poly-Adenine (A) tail is added to the 3' end of the pre-mRNA.

Both the 5′ cap and 3' poly-(A) tail protect the RNA transcript from its degradation by exonucleases.

Eukaryotic RNA splicing consists of the removal of non-coding regions called 'introns' and subsequent splicing of the protein-coding regions called 'exons'.

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7 0

2 years ago

Why are shell of marine snails heavier than garden snails?

const2013 [10]

They have to have a higher density than water to have the ability to stay on the sea floor. Otherwise they would just float to the surface of the water

6 0

3 years ago

Which hypothesis most likely explains the results at 60°C and 70°C? O A. The substrate has been used up because of the high temp

Leni [432]

Answer: Option B

The enzyme has changed shape because of high temperature.

Explanation:

Enzymes are biological catalysts in living organisms that speed up the rate of chemical reactions.

High temperature changes the shape of enzymes.

Increase or high temperature lead to decrease in enzymes activities. This is due to enzyme protein been denatures by high temperature which is the breaking of molecular bonds within the enzyme protein. When the enzymes bonds are broken, the shape of the enzymes changes and they no longer act as catalysts.

5 0

3 years ago

3. How does the salinity in water change as you move from inland areas out towards the ocean? Be sure to include the phrase "bra

Len [333]

Answer:

Explanation below.

Explanation:

3. The salinity of water increases as the water moves from the inland area to the ocean. This is because the ocean has high salinity.

Salinity is the amount or concentration of salt in the water.

WAYS BY WHICH ESTUARIES PROTECT THE INLAND AREAS

1. The plant in estuaries prevent shoreline erosion.

2. Protect the inland areas from flooding.

3. Protect the inland areas from storm surges from hurricane.

IMPORTANCE OF ESTUARIES TO INLAND PEOPLE AND WILDLIFE.

1. They provide nesting and feeding habits for many aquatic plants and animals.

2. Provide goals and services that are economically and ecologically indispensable.

3. Prevent shoreline erosion

4. Protect the inland areas from flooding.

IMPACTS OF DREDGING ON FISH LIVING ESTUARIES.

Dredging have negative impacts on the organisms in estuaries. These are

1. Habitat degradation

2. Remobilization of contaminants

3. Increase rate of sedimentation.

4. Increased the concentration of suspended matter.

8 0

3 years ago