The evolution of new organs usually builds on preexisting structures that are modified in form and sometimes function. The embryos of fish, amphibians, reptiles, birds, and mammals all have pharyngeal pouches or gill slits. These pouches develop into gills in adult fish and they are used to absorb oxygen from their watery environment. These same pouches become parts of the in_________ humans. a) eyes and lungs
b) ear and throat
c) eyes and nose
d) lungs and heart

Answers

Answer 1
Answer:

Answer:

lungs and heart

Explanation:

lungs and heart is the answer because human lungs is use for gas exchange during respiration or while you breathe. When humans breathe, the lungs absorb oxygen from the inhaled sir into the blood and carbondioxide leaves the blood when we breathe out. The heart pumps the blood, and oxygenated blood are carried in the blood when air is inhaled and carbondioxide leaves the blood when you exhale. The blood carries nutrients and oxygenated blood. Therefore, lungs and heart work hand in hand in absorbtion of oxygen from it's environment.


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15. The complex carbohydrates pictured below are made by linkingmolecules of glucose. In all three complex carbohydrates, the subunits of
glucose are bonded together differently. Because they have different
structures, they most likely - *
Starch
Cellulose
Glycogen

Answers

The complex carbohydrates pictured below are made by linking

molecules of glucose is Starch. Option A

What are carbohydrates?

Starch is formed through a process called photosynthesis in plants. Photosynthesis is the biochemical process by which plants, algae, and some bacteria convert light energy from the sun into chemical energy stored in the form of glucose and other sugars. Starch serves as a primary storage form of this glucose in plants.

The linking together of the carbohydrates is what would lead to the starch formation.

Learn more about carbohydrates:brainly.com/question/13665181

#SPJ3

Answer:

they perform different functions

What difference between heterozygous and homozygous?

Answers

A heterozygous individual is if a mutation occurs in just one copy of the gene.
If both copies of the gene are mutated than the individual is homozygous

Discuss one of the major issues in toxicology from any perspective.

Answers

A controversial issue of toxicology is the use of chemical additives in food.

Food additives are substances intentionally added to foods for the purpose of preserving, enhancing or modifying their physical, chemical, biological or sensory properties without impairing their nutritional value. However, it is necessary to control the use of these substances, as ingestion of these substances may pose health risks.

Additives are found in most processed foods, such as cookies, breakfast cereals, soft drinks, jellies, artificial juices, candies and a host of other foods in the diet of Brazilians, especially children.

Thus, its consumption should be controlled, as the health risk is confirmed by a sum of scientific studies. The three main ills associated with excessive consumption of these substances are cancer, food hypersensitivity and attention deficit hyperactivity disorder.

Some audiences are even more vulnerable to consumption, such as pregnant women, the elderly, people with little food and children under three years. In the case of children the attention should be greater because the digestive and urinary systems are not yet fully prepared to process these substances.

The more industrialized the product, the more chemical additives it will have. The ideal is to prepare fresh products at home. However, as is often not possible, it is important that you read the label and choose the products with the least additives.

A particular function performed by an arrangement of similar cells is characteristic of .

Answers

The answer would be tissues.

What are the threadlike proteins that attach to platelets in blood clotting?

Answers

Answer:

fibrin

Explanation:

Fibrin is a protein that acts as a first response whenever your body is injured in order to play an important role in the blood clotting process. When any type of injury that causes blood leakage occurs and coagulation begins, an alert is then sent to the body to start producing fibrin.

In the form of long strands, each fibrin molecule intertwines to form a thin mesh around the lesion. As a result, this mesh stops the blood by capturing red blood cells, leukocytes and platelets, generating a clot and forming a kind of tampon at the injured site.

In summary, we can say that fibrin is a yarn-like protein that binds to platelets in blood clotting.

DNA (Deoxyribonucleic Acid)

The spinal cord is surrounded by the bones of the

Answers

The spinal cord is surrounded by bones (vertebrae), extends downward from the base.