How did the oceans form over time?

1 answer:

8 0

The ocean formed billions of years ago. Over vast periods of time, our primitiveoceans formed. Water remained a gas until the Earth cooled below 212 degrees Fahrenheit . At this time, about 3.8 billion years ago, the water condensed into rain which filled the basins that are now our oceans. (asteroids too)

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The chain termination method of sequencing:

Cloud [144]

Answer:

Labeled ddNTPs

Explanation:

The chain termination method or sanger method consist in 4 synthetis reaction at the same time. Each of them with a different labeled ddNTPs (ddATP, ddCTP, ddGTP and ddTTP) as part of it sythesis sustract. As the reaction goes on, if a ddNTP is added to the new DNA chain, it will stop the elongation becouse DNA polymerase activity depends on the presence of -OH extremes which are miss on ddNTPs.

5 0

3 years ago

What helps plant cells remain rigid?

Sergeeva-Olga [200]

Withstand turgor pressure-turgor pressure is the force exerted against the cell wall as the contents of the cell push the plasma membrane against the cell wall.

7 0

3 years ago

Jason wanted to find out how he could increase the number of popcorn kernels that pop when cooked. He hypothesized that more ker

Ghella [55]

Answer:

This question is incomplete, it is asking to identify the following variables in the question:

Independent Variable: DIFFERENT AMOUNTS OF OIL

Dependent Variables: NUMBER OF KERNELS THAT POPPED

Controlled Variables: TIME FOR POPPING, SAME BRAND OF KERNEL, SAME COOKING TIME

Explanation:

The independent variable of an experiment refers to the variable that the experimenter intentionally manipulates or changes for the purpose of effecting a measurable response in another variable (dependent variable). In this experiment, the independent variable is DIFFERENT AMOUNTS OF OIL used because this is what Jason changes in the experiment.

Contrarily, the dependent variable is the variable that the experimenter measures in response to the independent variable. In this experiment, Jason measures the NUMBER OF KERNELS THAT POPPED from using different amounts of oil. Hence, the NUMBER OF KERNELS THAT POPPED is the dependent variable.

Controlled variables or constants are those variables that must be kept constant or unchanged throughout the experiment in order not to influence the findings of the experiment. In this case, the following variables were kept constant for all the groups: TIME FOR POPPING , SAME BRAND OF KERNEL (Pop rite), SAME COOKING TIME (4 mins).

7 0

3 years ago

relationship between lactobacillus bulgaricus and streptococcus thermophilus under whey conditions: focus on amino acid formatio

fredd [130]

The discussion of relationship between lactobacillus bulgaricus and streptococcus thermophilus under whey conditions: focus on amino acid formation is given in the below paragraph-

In this study, we used Lactobacillus delbrueckii subsp. bulgaricus 2038 grown with or without Streptococcus thermophilus in whey medium to conduct microarray experiments to examine how these two strains use nitrogen since Lb. bulgaricus 2038 uses whey as its nitrogen before casein. Because S. thermophilus primarily preferred different types of peptides than L. bulgaricus, but has lost the ability to prioritize the use of free branched-chain amino acids, L. bulgaricus 2038 was better able to import the types of peptides required for growth compared to monoculture.

In order to stop Lb. bulgaricus 2038 from converting aspartate into intermediates that form the carbon skeleton, which is catalyzed by phosphoenolpyruvate carboxykinase, the ratio of nitrogen to carbon was reduced during co-culture.

<h3>What is an amino acid?</h3>

Organic substances known as amino acids have both functional groups for amino and carboxylic acids. Alpha-amino acids, which make up proteins, are by far the most common amino acids in nature despite the fact that there are hundreds of them. The genetic coding only contains 22 alpha amino acids.

The locations of the primary structural functional groups in amino acids can be categorized as alpha, beta, gamma, or delta amino acids; further classifications relate to polarity, ionization, and the type of side chain group (aliphatic, acyclic, aromatic, containing hydroxyl or sulfur, etc.).

To learn more about amino acid with the help of given link:

brainly.com/question/2526971

#SPJ4

6 0

2 years ago

A theoretical protein, blue2, is coded for by the blu2 gene. This protein codes for a blue pigment used by the organism to prote

Reika [66]

The question is:
What may be observed as a result of the described mutation in an individual?

1) Skin cancer due to UV rays 
2) Darker blue pigmentation 
3) A lack of alterase for other functions it may serve 
4) The release of a different pigment color

The correct answer is B.
In this theoretical molecular cascade, we have three key parts, the blue2 gene, the blue2 operator and the enzyme alterase.
The enzyme alterase stops the expression of the blue2 gene by binding to its operator, and therefore the blue pigment protein.
The blue2 operator has a specific binding spot for alterase. If this binding spot is changed due to a conformational change, the alterase would not be able to bind to the operator and the blue2 gene could express undisturbedly, resulting in increased concentration of the blue pigment protein.

4 0

4 years ago