The original ancestor of all life on earth was a(n) ______. flagellate microbe arthropod cyanobacteria

What effects do mutations have? Check all that apply.

Schach [20]

Answer:

By changing a gene's instructions for making a protein, a mutation can cause the protein to malfunction or to be missing entirely. When a mutation alters a protein that plays a critical role in the body, it can disrupt normal development or cause a medical condition

8 0

3 years ago

What pervasive theme in Northern Renaissance culture is implicit in Albrecht Altdorfer's The Battle of Issus

Andrews [41]

I believe that the pervasive theme in Northern Renaissance culture that is implicit in Albrecht Altdorfer's The Battle of Issus is humanist interest in ancient history and culture.
The painting depicts events of 333 BC battle between Alexander the Great and Darius III of Persia.

7 0

3 years ago

What is a climatic table?

earnstyle [38]

Answer:

A climate graph displays yearly temperature and precipitation statistics for a particular location. Temperature (oC) is measured using the numbers on the left hand side of the chart. The average temperature for each month is plotted on the graph with a red dot and the dots are then connected in a smooth, red line.

4 0

3 years ago

Learning Task 2 Write the word true or false if the statement is correct and if false change the underline word or words to make

EastWind [94]

Complete question:

Write the word TRUE if the statement is correct and if FALSE change the underlined word or words to make the statement correct.

_______1. A molecular group consisting of a sugar molecule, a phosphate group and a nitrogenous base is a nucleic acid.

_______ 2. In a DNA molecule, a base pair would be composed of adenine and guanine.

_______ 3. Cytosine and adenine are purines.

_______ 4. During the replication of DNA, bonds are broken between the phosphate groups.

_______ 5. RNA contains the nitrogenous base uracil.

_______ 6. There are 20 different amino acids in a cell.

_______ 7. The coded message carried by messenger RNA is translated into polypeptides at organelles called chloroplasts.

_______ 8. The decoding of a messenger RNA message into a polypeptide chain is known as translation

_______ 9. A severe mutation may lead to cell death and may have no effect on the body.

_______ 10. Most mutation are harmful.

Answer:

False
False
False
False
True
True
False
True
True
False

Explanation:

_False_1. A molecular group consisting of a sugar molecule, a phosphate group, and a nitrogenous base is a nucleic acid.

Nucleotides: subunits or monomers composed of a sugar molecule, joined with a phosphate group and a nitrogenated base. The chain or sequence of nucleotides composes the polymer. Different nucleotides joined by their extremes compose the nucleic acid: DNA or RNA.

A molecular group consisting of a sugar molecule, a phosphate group, and a nitrogenous base is a nucleotide.

_False_ 2. In a DNA molecule, a base pair would be composed of adenine and guanine.

In the DNA molecule, Adenine (Purine) always pairs with Timine (Pyrimidine), while Guanine (Purin) pairs with Cytosine. A-T pair is united by 2 hydrogen bonds, and the G-C pair is united by 3 hydrogen bonds.

In a DNA molecule, a base pair would be composed of adenine and timine, or In a DNA molecule, a base pair would be composed of cytosine and guanine.

_False_ 3. Cytosine and adenine are purines.

Nitrogenated bases that form nucleic acids correspond to purines and pyrimidines. Adenine and guanine derive from purines, while Thymine and Citocine derive from Pyrimidines.

Guanine and adenine are purines.

_False_ 4. During the replication of DNA, bonds are broken between the phosphate groups.

During the replication of DNA, bonds are broken between the hydrogen groups.

_True_ 5. RNA contains the nitrogenous base uracil.

Instead of Timine, RNA contains uracil that pairs with adenine.

_True_ 6. There are 20 different amino acids in a cell.

_False_ 7. The coded message carried by messenger RNA is translated into polypeptides at organelles called chloroplasts.

When mRNA leaves the nucleus, meets a free ribosome in the cytosol. Into this organelle, it starts the protein building. Ribosomes read the mRNA code and begin protein synthesis by adding the correct amino acid using transference RNA.

The coded message carried by messenger RNA is translated into polypeptides at organelles called ribosomes.

__True__ 8. The decoding of a messenger RNA message into a polypeptide chain is known as translation

__True__ 9. A severe mutation may lead to cell death and may have no effect on the body.

_False_ 10. Most mutation are harmful.

A mutation is a change or alteration in DNI sequences that introduce new variants. Many of these are eliminated, but most of them might succeed and be incorporated into each individual. These mutations are the ones that have been selected by natural selection, leading to evolution.

Most mutation are not harmful

5 0

3 years ago

Explain what maria and craters are and how they formed. best answer will be marked as brainlest plz help. with an honest answer

kolbaska11 [484]

Lunar maria (plural form of the Latin word mare, which means sea) are dark surfaces that can be found all over the moon (17% of the Moon is covered in them) that have been created as a result of volcanic eruptions. These areas are made up of basalt, and given that they seemed almost waterlike, the astronomers in the distant past mistook them for seas, whence their name comes.
When it comes to craters, their origin is quite similar - volcanic eruptions created them. When lava starts erupting from a volcano, it has to get out from somewhere - and thus craters are created. If you are referring to lunar craters, however, there are many speculations as to how they were created: due to volcanic eruptions, meteoric impact, or glacier activity.

3 0

3 years ago