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3 years ago

PLEASE HELP 20 POINTS

Biology

1 answer:

Natasha_Volkova [10]3 years ago

6 0

Answer:

When the meteor hit a caused a chain reaction which caused all that and made some cloud that was toxic.

Explanation:

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Looking at the Punnett square, list the possible phenotypes and frequencies of

liubo4ka [24]

Answer:

Phenotypes:

Aa with a frequency of 2

aa with a frequency of 2

The children have equal chances of having aa or Aa

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3 years ago

Explain the biological structure hierarchy of the human body and the role of homeostasis in maintaining the body. Include the fo

Nuetrik [128]

Answer:

1. Biological structure of the human body

The human body is organized in different levels according to their complexity.

The levels are the folowing (increasing complexity).

1. Atom (N, O, C,..)

2. Molecule (Protein, lipids, water...)

3. Organelle (mitochondria, golgi apparatus,...)

4. Cell (blood cells, bone cell,..)

5. Tissue (connective tissue, epithelial tissue,..)

6. Organ (lungs, kidney,..)

7. Organ system (skeletal system, muscuar system,...)

8. Organism (the human body)

Each of the levels is formed by an agrupation of the previous level. For example, cells are formed by a number of organelles, and a group of cells form a tissue.

Cells are the basic units of structure of the body, and there are different types of them.

2. Homeostasis

Homeostasis is a process of the body by which the organism works to maintain a stable internal environment, while adjusting to changes in the external environment.

This process is possible because of the work of both the nervous system and the endocrine system. While the first controles the body's activities and detects the necesity of adjustments, the second regulates the activities by using hormones.

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1 year ago

The end result of meiosis is to produce either an egg or a(n)

11Alexandr11 [23.1K]

Answer:

Sperm ?

Explanation:

I think i'm right.

5 0

2 years ago

What is allele frequency

Art [367]

It is the fraction of all chromosomes in the population that carry that allele.

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3 years ago

Read 2 more answers

Glucose travels in the plasma or liquid part of

djverab [1.8K]

Answer:

Explanation:

Glucose is a sugar, highly soluble in water because it has lots of polar hydroxyl groups (-OH) which can form hydrogen-bonds with water molecules. These types of bonds are intermolecular forces which are present in other macromolecules like the DNA or proteins.

Cholesterol and triglycerids are lipids. These have long chains of hydrocarbons, which are non polar and therefore insoluble in water.

Blood is made of a solid and a liquid part. <u>The solid part contains cells</u>. <u>The liquid part (plasma), is made of water, salts, and proteins</u>. Glucose and cholesterol/triglycerids travel in the liquid part of the blood, in an aqueous environment. Because the lipids are not soluble, they need to travel with a carrier protein that keeps them protected from the surrounding water.

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3 years ago