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timofeeve [1]
3 years ago
15

How do hydrogen bonds between molecules explain why they are polar?​

Biology
1 answer:
valkas [14]3 years ago
6 0

Answer:

The attractive force between water molecules is a dipole interaction. The hydrogen atoms are bound to the highly electronegative oxygen atom (which also possesses two lone pair sets of electrons, making for a very polar bond. Hydrogen bonds are very strong compared to other dipole interactions.

Explanation:

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Of 2,872 persons who had received radiation treatment in childhood because of an enlarged thymus, cancer of the thyroid develope
Goryan [66]

Answer: People who have received radiation treatment are 15 times more likely to develop benign thyroid tumors relative to does who have not.

Explanation:

Relative risk of benign thyroid tumor = (52/2872)/(6/5055)

= 0.018/0.0012

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3 0
3 years ago
If a pea plant that is herterozygous for rounds, yellow peas is crossed with a pea plant that is homozygous for round peas but h
Keith_Richards [23]

Answer: There re two different types of phenotypes in the offsprings that is Round yellow and Round green.

Explanation-

As per the Mendelian inheritance, Round shape and yellow color of pea are dominant over wrinkled shape and green color of pea.

According to the question, genotypes of parents are- RrYy ( heterzygous for round and yellow) and RRYy ( homozygous for round and heterozygous for yellow).

The first parent can produce four different gametes that is RY, Ry, rY, ry whereas the second parent will produce only two types of gametes that is RY and Ry.

When they are crossed, they will produce two different phenotypes in the offsprings.

Refer punnett square.


7 0
3 years ago
A population ecologist determines the number of oak trees per square unit in a forest. What is he trying to infer by doing so?.
morpeh [17]

The answer is letter C. The distribution of oak trees in an area.

Population Ecologist would often measure the number distribution and density of the area. Trees are often measured by plots or by hectares. This is to know how many trees are situated in that area.

4 0
3 years ago
Read the section "Cells Make Up Plants And
marta [7]

Answer:

Due to cell wall.

Explanation:

Scientists were able to easily  identify the cells in plants first as compared to animal cell because the plant cell has cell wall while the animal cell has no cell wall only cell membrane. The structure of plant cell is just like the compartments and the cell wall provides the boundary between two cell which enable the scientist to see the plant cell first.

8 0
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the answer is f i think idk

7 0
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