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ryzh [129]
3 years ago
12

What sort of fossils would be expected to be found in Antarctica from about the time of Pangaea (250 MYA)?

Biology
1 answer:
poizon [28]3 years ago
8 0

Answer:

Lystrosaurus as known as or translates to 'shovel reptile'.

Lystrosaurus is the only fossils of this creature have only been found in anatartica, India and south Africa.

Explanation:

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In which type of cell must a mutation occur in order for an entire organism to show the mutation?
nignag [31]
For mutations to affect an organism's descendants, they must: 1) occur in cells that produce the next generation, and 2) affect the hereditary material. Ultimately, the interplay between inherited mutations and environmental pressures generates diversity among species.
4 0
3 years ago
Snake venom contains a mixture of enzymes, which include phospholipase that break down cell membranes, proteinases that destroy
Alik [6]

Answer:

The correct answer is - Venom enzyme inhibitors.

Explanation:

The snake venoms are the complex mixtures of phospholipase A2s, disintegrins, serine proteases, C-lectins, and metalloproteases, and others. The snake venom phospholipase A2s (svPLA2s) enzymes found in most of the families of venomous snakes that cause anticoagulant effects, cardiotoxicity, neurotoxicity, and cytotoxicity, and other effects.

In antivenom, there are Venom enzyme inhibitors other than antibodies that help in neutralizing these enzymes by weakening or inhibiting these toxic actions.

3 0
3 years ago
A protein isolated from a thermophilic bacterium shows a molecular weight of 160 kD when eluted from a size-exclusion chromatogr
Amiraneli [1.4K]

Answer:

as a dimer consisting of two identical monomers (80 kDa subunits) that are packed together via hydrophobic interactions

Explanation:

SDS-PAGE (sodium dodecyl sulphate–polyacrylamide gel electrophoresis), is an electrophoretic methodology used to separate proteins that have a molecular weight between 5 to 250 kDa. SDS is a well-known ionic detergent that is able to break hydrophobic interactions and hydrogen bonds. Moreover, size-exclusion chromatography is a filtration technique that separates molecules in solution according to their molecular size. In this case, SDS-PAGE showed that the target protein is composed of two identical subunits (monomers) of 80 kDa each, which were separated by the detergent and formed one single band in the SDS-PAGE gel.

4 0
3 years ago
Why does photosynthesis require water? a. because water provides oxygen atoms. b. because water provides electrons . c. because
katovenus [111]

Answer:

The correct answer would be b. because water provides electrons.

During the light reaction of the photosynthesis, the water is photolysed into high energy electrons, hydrogen ions, and oxygen.

The overall reaction can be written as:

2 H₂O + sunlight → 4 H⁺ + 4 e⁻ + O₂

It takes in water-splitting complex associated with photo-system II rooted in the thylakoid membrane of chloroplast.

The oxygen is released as the byproduct of photosynthesis.

The hydrogen ions help in the formation chemiosmotic potential across the thyllakoid membrane which help in the formation of ATP (adenosine triphosphate).

The electrons are used to replace the electrons lost from chlorophyll a of reaction centre associated with photo-system II. The electrons are lost due to the photo-excitation of chlorophyll a.

The electrons lost from chlorophyll a help in the production of ATP and are used to reduce NADP⁺ into NADPH.

The ATP and NADPH are used in light-independent reaction of the photosynthesis to produce glucose or food.

4 0
3 years ago
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Which term names a property or mineral
Assoli18 [71]

Answer:

hiii

Explanation:

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3 years ago
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