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gulaghasi [49]
3 years ago
13

Many exergonic reactions fail to happen at a reasonable rate (e.g. conversion of diamonds to charcoal). This is due to the fact

that their activation energy may be too high to overcome. Which of the following correctly describes the reason for this?
A. The free energy of the transition state is much lower than the free energy of the reactants.

B. The free energy of the transition state is much higher than the free energy of the reactants.

C. The enzyme that catalyzes the reaction needs time to interact chemically with the substrate(s).

D. The interaction between the enzyme and substrate(s) involve a decrease in entropy, which can’t happen without an input of energy.
Biology
1 answer:
just olya [345]3 years ago
5 0

Answer: Option b

Explanation:In chemistry,

before any reaction would occurs, reactat must be able to overcome some certain amount of energy which is called the activation. The activation energy is usually the heat that is suppled.it is also refered to as the minimum energy needed before any reaction can take place. For reaction to take place, there must be an equilibrium( at constant temperature and pressure.

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Which of the three things provide evidence that South America, Africa, Antarctica, and Australia were once together as one super
bazaltina [42]

Answer:

- Glacial deposits and scratches in the bedrock from an ice sheet match in distant regions

- Fossils of marsupials were originally the same across South America and Australia

- Cratons match across the edges of continents

Explanation:

South America, Africa, Antarctica, and Australia were all once part of one super-continent. This super-continent has been named Gondwanaland. As the geological processes got more intensive though and Gondwanaland separated into smaller land masses, continents, which we now know as the continents on the Southern Hemisphere. There are numerous clues that confirm that these continents were once connected. Some of the clues are the matching cratons on the edges of the continents, the glacial deposits and scratches in the bedrock are also matching, lot of fossilized flora and fauna from the same species have been found in several of these continents, the marsupials in South America and Australia  etc.

8 0
3 years ago
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Which type of rock is formed from cooling molten rock?
Sholpan [36]
Igneous. Igneous forms when lava cools off. :)
7 0
2 years ago
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The image is an aerial photograph. What is the geological feature shown? A) a large fault on Earth’s crust B) the dry bed of an
valina [46]

sand dunes

because it is and sand dunes get deposited


7 0
3 years ago
Large predators are found at higher trophic levels, what does this mean in terms of energy loss ?
VARVARA [1.3K]

Large predators are found at higher trophic levels because specialized bodies are needed to extract the small energy that gets to them.

The energy that gets to successive trophic levels decreases progressively because much of it is lost as heat. This means that a small percentage of the energy from the producers that form the bases of trophic levels to the predators that are somewhat at the top of trophic levels.

With big body size, the bodies of predators are organized into systems that work together to efficiently extract the small energy that gets to them from immediate lower trophic level.

More on the energy from trophic levels can be found here: brainly.com/question/13375401?

6 0
2 years ago
Consider the DNA sequence. 5' C C G T A A C A G T C G A C G A G C A C A T A G C T T C A G C A T A C A G C A G A T A G 3' 3' G G
umka2103 [35]

Answer:

Primers should be:

3 'ACGTATGTCGCTTAGT 5'

5 'ACGTTCCAGTCAATGA 3'

Explanation:

DNA replication occurs with the need for the presence of primers that are a small sequence of nitrogenous bases that will allow the initiation of replication.

Primers are extremely important in PCR and are represented as small pieces of single-stranded DNA that specify the region of DNA that should be replicated during PCR. These primers attach to the single strand of DNA by pairing the nitrogenous bases allowing the DNA polymerase to recognize where replication begins.

Regarding the question above, the primers should be:

3 'ACGTATGTCGCTTAGT 5'

5 'ACGTTCCAGTCAATGA 3'

6 0
3 years ago
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