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VashaNatasha [74]
3 years ago
14

A solution that is a 4 on the pH scale is a _____. a. weak acid b. strong acid c. weak base d. strong base

Biology
2 answers:
marissa [1.9K]3 years ago
4 0
Ans : It is a. weak acid
DochEvi [55]3 years ago
4 0

Answer: A solution that is a 4 on the pH scale is a (a) weak acid.

The pH scale is a universal measure of how much acidic or basic any substance is. The scale of pH ranges from 0 to 14 with 7 in middle being neutral i.e. neither acidic nor basic. Substances with pH less than 7 are considered to be acidic and more than 7 are considered to be basic. Strong acids have pH less than weak acid while strong bases have higher pH than weak bases.

Substances or solutions that have pH 0-3 are highly acidic, 4-6 are weakly acidic and pH of 7 is neutral solution while pH of 8-11 are weakly basic and 12-14 are highly basic.

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A mutation that causes production of a defective pilus in a bacterium will prevent __________.
daser333 [38]

Answer:

The correct answer is: Attachment.

Explanation:

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  • Pilus also mediate the process of conjugation in some bacterial cells.
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7 0
3 years ago
A plant cell placed in a solution with a lower (more negative) water potential will _____. view available hint(s) a plant cell p
nlexa [21]

Answer:

Lose water and plasmolyze

Explanation:

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Cystic fibrosis (CF) is a recessive trait that causes a fatal lung disorder, with symptoms beginning in early childhood. A healt
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Answer:

1/4

Explanation:

Cystic fibrosis is a recessive disorder and therefore, is expressed only in homozygous recessive genotype. Let's assume that the allele "c" is responsible for the disease in the homozygous state. Since the couple already has a child with cystic fibrosis (cc), they both are heterozygous carriers for the disease.

The genotype of male and female each is "Cc". A cross between Cc x Cc gives progeny in the following phenotype ratio=1/4 diseased: 1/2 normal carriers: 1/4 normal. Therefore, the probability of getting a diseased child for them is 1/4.

6 0
3 years ago
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