Which of the following is correct regarding the pH scale?

A. A substance with a pH of 3 is two times more alkaline than a substance with a pH of 4

B. A substance with a pH of 3 is 10 times more acidic than a substance with a pH of 4

C. A substance with a pH of 3 is two times more acidic than a substance with a pH of 4

D. A substance with pH of 3 is 10 times more alkaline than a substance with a pH of 4

Answer Explanation:

The pH scale is logarithmic, indicating that each whole number change on the pH scale represents a tenfold change in acidity or alkalinity. Therefore, a substance with a pH of 3 is 10 times more acidic than a substance with a pH of 4.

Therefore, the Correct Answer is B.

Q #1: Which of the following is the term given to the sequence of nucleotides that contains the information to make a specific protein molecule?

A. Locus

B. Promoter

C. Operator

D. Gene

Answer Explanation

A gene is a segment of DNA that codes for a specific protein or polypeptide.
Q #2: in pea plants, green pod color (6) is dominant to yellow pod color ( A cross was done between a plant with green pods and a plant with yellow pods. Of the resulting offspring 50% had green pods and 50% had yellow pods. Which of the following were the genotypes of both parent plants?

A. Ggx Gg

B. GG x gg

C. Gg x gg

D. gg x gg

Answer Explanation

G

g

g

Gg

gg

g

Gg

gg
Q #3: Which of the following substances is excreted by sweat glands in response to the breakdown of proteins and the formation of ammonia?

A. Sebum

B. Water

C. Lysozymes

D. Urea

Answer Explanation

Urea is a nitrogenous waste product that is produced when the liver breaks down proteins and amino acids. It is then excreted from the body via sweat.

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Which of the following is correct regarding the pH scale?

More Questions on TEAS 7 Science

Q #1: Which of the following is the term given to the sequence of nucleotides that contains the information to make a specific protein molecule?

Answer Explanation

Q #2: in pea plants, green pod color (6) is dominant to yellow pod color ( A cross was done between a plant with green pods and a plant with yellow pods. Of the resulting offspring 50% had green pods and 50% had yellow pods. Which of the following were the genotypes of both parent plants?

Answer Explanation

Q #3: Which of the following substances is excreted by sweat glands in response to the breakdown of proteins and the formation of ammonia?

Answer Explanation

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