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3 years ago

Chemical formulas contain subscripts. What is the purpose of

1 answer:

5 0

A

It is used to represent the number of atoms in the element. H2O is 2 Hydrogen molecules and one oxygen molecule, however we don’t wright the 1.

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Which of the following is NOT a macromolecule used by cells;

nexus9112 [7]

Answer:

Monosaccharides

Explanation:

A monosaccharide is a monomer of a carbohydrate. Macromolecules are made up of monomers!

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3 years ago

Which of the following best describes how the RNA sequence specifies the production of an amino acid chain?

masha68 [24]

Answer:

The answer is B Each group of three RNA bases codes for an enzyme that connects amino acids.

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3 years ago

In which terrestrial biome would you find precipitation of 300 to 900 millimeters (mm) each year?

True [87]

Answer: B. coniferous forests.

Explanation:

Coniferous forests are the terrestrial biomes which receives an annually 300 to 900 millimeters precipitation. These forests exhibits trees which undergoes special adaptations in the scarcity of water. The forests exhibit coniferous trees which means instead of leaves they posses needles and instead of flowers they have cones. These adaptations helps in preventing the water loss through transpiration.

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3 years ago

What are the four characteristics of water?

Ksju [112]

1.It is a universal solvent.

2Pure water is transparent, colourless and odourless.

3.Pure water is a poor conductor of electricity.

4.Water in a pure form has a neutral ph i.e 7 which means it is neither acidic nor basic.

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3 years ago

Mom is A+. She has 2 children, one is O+ and the other is B-. (Note: Rh+ is RR or Rr, and Rh- is rr) What are the father’s possi

mezya [45]

Answer:

The blood group of the father must be B.
The genotype of blood group would be $I^{B}i$ .
The Rh factor of the father can either be positive or negative.
Thus, the genotype of Rh factor of father would be either Rr or rr.

Rh factor:

The phenotype of the mother Rh factor is positive. Thus, she can have Rr or RR as her genotype as positive is a dominant trait.

If the genotype of the mother is RR then all the offspring would be positive for Rh factor. However, one of the offspring is Rh negative, that means the mother must be heterozygous that is, Rr.

The genotype of the father can either be Rr or rr in order to produce offspring with positive as well as negative Rh.

Blood group:

The blood group of the mother is A. Thus, the genotype can either be $I^{A}I^{A}$ or $I^{A}i$ .

However, the blood groups of the children are O+ and B+.

Thus, the genotype of the mother must be heterozygous that is $I^{A}i$ .

The blood group of the father must be B with genotype $I^{B}i$ in order to produce offspring with blood group O and B.

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3 years ago