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photoshop1234 [79]

2 years ago

6

Which of these would most likely cause a mutation? A the placement of ribosomes on the endoplasmic reticulum B the insertion of

a nucleotide into DNA C the movement of transfer RNA out of the nucleus D the release of messenger RNA from DNA

1 answer:

astra-53 [7]2 years ago

7 0

the insertion of a nucleotide into DNA would most likely cause a mutation.

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A gel electrophoresis migration pattern displaying polymerase chain reaction (PCR) products shows four strong bands. The lengths

dangina [55]

Answer:

D) The encoded protein contains four repeats of a specific sequence.

Explanation:

The polymerase chain reaction is a technique used to replicate or amplify the amount of DNA sample.

The technique employs running the DNA samples on the gel through which the DNA samples run based on their sizes.

The large-sized DNA fragment runs to a less distance whereas the small-sized DNA run to a large distance.

In the given question, four sizes of DNA bands are formed in the ratio of 1:2:3:4 which shows that the proteins encoded by this DNA have four repeats of a specific sequence of the template strand. This was confirmed when the largest band sample was again used as a sample of PCR and the PCR resulted in the four bands in similar 1:2:3:4.

Thus, Option-D is the correct answer.

3 0

2 years ago

Single strands of nucleic acids are directional, meaning that there are two different ends. What functional groups define the tw

worty [1.4K]

Answer:

The 5' end has free phosphate group while the 3' end has free OH group.

Explanation:

Each DNA strand has two ends that differ from each other with respect to the functional group. The nucleotide present at the 5' end of a DNA strand has a free phosphate group. This phosphate group of other nucleotides of the DNA strand is bonded in phosphodiester bonds. Likewise, the 3' end of a DNA has a free OH group. This makes the two ends of a DNA strand quite different from each other. A DNA new nucleotide can be added to the 3' end due to the presence of a free OH group.

7 0

2 years ago

Which factors determine whether a cell enters G0?

Delvig [45]

The appropriate answer for this one is C. Cancer cells divide uncontrollably and therefore the cell cycle would be continuously divide. To add, there is a term known as terminally differentiated cells. These cells that never enter the cell cycle again, meaning they stay in G0 and never divide. However, some cells can be triggered to depart G0 and re-enter G1, which permits them to divide again.

here is the awnsers hope it helps you...

3 0

2 years ago

What environmental factor does the pyramid of energy incorporate that prevents it from inverting? a. population size b. species

svetoff [14.1K]

The correct answer is (C) biomass at each trophic level

Pyramid of energy is a graphic representation of amount of energy trapped per unit time and area in different trophic levels of a food chain with producers forming the base and top carnivores the tip. As the biomass of producers are always greater than the carnivores, the pyramid of energy can't be inverted.

6 0

2 years ago

Read 2 more answers

The slide image shows epithelium tissue found in the bladder. What is the function of the tissue indicated by the arrow?

Ede4ka [16]

Epithelial cells are mainly used for protection; in the urinary tract, these tissue cells are used to protect the bladder from toxic urine. The tissue can also expand to hold larger quantities of urine.

8 0

2 years ago