A symptom of peripheral vascular disease is intermittent claudication in the

Why enzymes are necessary for many cellular reactions?

solmaris [256]

They catalyze a reaction, making it operate at several orders of magnitude faster than it would otherwise, and don't change the end products

Think of it this way, if someone were to perform surgery sure they could probably do it alone... but things go much faster if there's an assistant (enzyme) there handing them the stuff they need

6 0

3 years ago

The daughter of a 79-year-old woman asks the nurse why her mother gets so many infections. the daughter states, "my mother has a

oksano4ka [1.4K]

She is dying? Like idk if there is something specific you want to say

3 0

3 years ago

Contrast the genetic content and the origin of sister versus nonsister chromatids during their earliest appearance in prophase I

11111nata11111 [884]

Complete question:

Question: Contrast the genetic content and the origin of sister versus nonsister chromatids during their earliest appearance in prophase I of meiosis.

a) Sister chromatids are genetically similar, except where mutations may have occurred during DNA replication. Nonsister chromatids are genetically dissimilar.

b. Sister chromatids are genetically identical, except where mutations may have occurred during DNA replication. Nonsister chromatids are genetically similar if on homologous chromosomes and genetically dissimilar if on nonhomologous chromosomes.

c. Sister chromatids are genetically identical, except where mutations may have occurred during DNA replication. Nonsister chromatids are genetically similar.

d. Sister chromatids are not genetically similar, except where mutations may have occured during DNA replication. Nonsister chromatids are genetically similar if on homologous chromosomes and genetically dissimilar if on nonhomologous chromosomes.

Answer:

b. Sister chromatids are genetically identical, except where mutations may have occurred during DNA replication. Nonsister chromatids are genetically similar if on homologous chromosomes and genetically dissimilar if on nonhomologous chromosomes.

Explanation:

A chromosome has two chromatids after the S phase of the cell cycle. The replicated DNA molecules are accommodated in the sister chromatids. Therefore, two chromatids of a chromosome carry the identical DNA molecule and are genetically identical to each other. The sister chromatids may carry different genes if one or more mutation occurs in their DNA.

Two chromatids of two different chromosomes are called non-sister chromatids. Homologous chromosomes are the chromosomes that are similar in morphology and genetic constitution. Therefore, two chromatids of a homologous pair are also non-sister chromatids but have genetically identical sequences. For example, the two non-sister chromatids of the pair of chromosome 21 in humans carry the alleles for the same genes.

However, the non-sister chromatids that belong to nonhomologous chromosomes carry different genes and are not genetically identical.

7 0

4 years ago

According to Chargaff's rules, which of the following are possible base compositions for doublestranded DNA.

mr Goodwill [35]

Answer:

A) %A=5 %G= 45 %C=45 %T=5 %U= 0 .

Explanation:

DNA is the genetic material and transfer from one generation to the generation. The DNA composed of the nitrogenous bases, pentose sugar and the phosphate group.

The base pairing of DNA follows the Chargaff's rule. According to this, the purines an pyrimidine ratio is equal to 1. The number of adenine is equal with that of thymine and number of cytosine is equal to the guanosine. In option (A) this criteria is follows.

Thus, the correct answer is option (A).

4 0

3 years ago

is the following statement true or false only eukaryotic cells are capable of photosynthesis because photosynthesis requires chl

Ivan

Answer:

False

Explanation:

Eukaryotes along with some prokaryotes also perform the process of photosynthesis. Photosynthesis needs chloroplast and it is also found in some of the prokaryotes.

5 0

4 years ago