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2 years ago

What can you learn about a sample from an sds-page analysis?

Biology

1 answer:

puteri [66]2 years ago

8 0

Option (c.) the purity of the protein, will be the right one.

Sodium Dodecyl Sulphate provides a negative charge to each protein as a function of their molecular size. It is an anionic detergent, as well as it is there to determine the relative abundance of major proteins.

After denaturing, proteins get unfolded and gets coated with SDS detergent molecules. The SDS-PAGE technique is used for the separation of protein based on their molecular size/weight/mass.

It is so because as it identifies the proteins by its molecular weight. Therefore, SDS is used in denaturing polyacrylamide gel electrophoresis for the determination of protein molecular weight, the SDS-PAGE is a technique.

To learn more about SDS-PAGE here

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10. Which process helps to preserve the genetic information stored in DNA during DNA replication?

Tems11 [23]

Nucleotides lining up along the template strand according to base pairing rules process helps to preserve the genetic information stored in DNA during DNA replication

Option D

<h3>Explanation:</h3>

The DNA is a semi conservative molecule from the genetic information storing point of view. The genetic information is stored there in form of the alignment and arrangement of the nitrogen bases. These nitrogen bases are replicated just in order to conserve the genetic information.

During protein synthesis, same nitrogen bases get denoted in the RNAs and this gives the particular protein which is required in the body. No molecule present in the body can destroy the DNA and its alignment. It’s conserved as long as no external molecule or force destroys it. So it’s conserved in a very safe way.

4 0

3 years ago

Part 1: Read each question carefully and choose the correct answer.

Vesna [10]

Answer:

1. d

Explanation:

The correct answer would be that the system of peer review is used to determine conclusively the conclusions of the paper.

The system of peer review refers to the process of evaluating a scientific report or paper by one or more independent scientists who have a similar background as the producer of the report or paper.

The reviewers evaluate the methodologies and various claims made by the original researcher and give feedback on their validity as well as make criticism of the paper in order to improve its quality before final publication. However, reviewers do not alter the claims or conclusions of papers, they can only query them.

Hence, options a, b, and c are correct as far as the peer review system is concerned.

The only incorrect option here is d.

2. There are 3 types of experiments, namely:

controlled experiment
field experiment
natural experiment

The controlled experiment involves the comparison of experimental group with control group. The two groups are subjected to the same conditions except for the variable whose effects are being researched.

The field experiment takes place outside the laboratory settings as opposed to other types of experiments. The subjects of the field experiment are studied in their natural environment outside the lab.

The natural experiment involves studying a phenomenon naturally without having control, unlike the controlled experiment. Observations are just recorded and are used to arrive at predictions or hypotheses.

Part 2:

Subject: 30 - 60 years old males

Control: Group B, the placebo group

Constant: Diet.

Independent variable: Administered drugs (choless and placebo)

Dependent variable: cholesterol level.

Part 3

Experiment 1:

a. Independent variable: types of detergent

b. dependent variable: height of foam

c. constant variables: amount of water, container type, temperature, period of agitation.

Experiment 2:

a. independent variable: amount of weight in each car

b. dependent variable: amount of gasoline left in each car

c. constant variable: car, type of gas, speed of car, distance covered by car.

Experiment 3

a. independent variable: amount of light

b. dependent variable: number of remnant bacterial cells after exposure to light

c. constant variable: initial number of bacteria, petri dish, type/amount of growth medium.

Experiment 4

a. independent variable: level of salinity

b. dependent variable: biomass of plant

c. constant variable: type of plant, period of growth, growth conditions.

5 0

3 years ago

Which type of tissue is particularly abundant in enzymes that engage in thermogenesis but don t accomplish any other work?

ale4655 [162]

The adipose tissue is the particular type of tissue that is abundant with enzymes that engage in thermogenesis and do not particularly accomplish any other work. These enzymes are only stimulated through locomation and intentional movement of the muscles and can be classified into three:

a. Exercise-associated thermogenesis (EAT)
b. Non-exercise activity thermogenesis (NEAT)
c. Diet-induced thermogenesist (DIT)

7 0

3 years ago

In a diploid individual, one chromosome carries A and B genes, and the homologous chromosome carries different forms (alleles) o

Helen [10]

Answer:

Explanation:

This involves a dihybrid inheritance I.e. two genes are being passed on. During meiosis, specifically, the Prophase stage, homologous chromosomes (similar but non-identical chromosomes received from each parent) line side by side. According to the question, one chromosome contains A and B alleles and its homologue, received by the other parent carries a and b alleles. This means that the diploid individual has a genotype AaBb for that gene.

According to Mendel's law of independent assortment, the alleles separate independently of one another into gametes. I.e. allele A and a separates into the gametes without affecting alleles B and b of the other gene.

Crossing-over, which is the exchange of chromosomal segment occurs between the two homologues. Hence, the exchange of chromosomal segments containing alleles in the individual will possibly produce four gametes with the genotypes: AB, Ab, aB, ab.

4 0

4 years ago

Need help with biology questions?

lakkis [162]

Answer:

this is the answer to number 2

Explanation:

the answer is nutrients and energy

8 0

3 years ago