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Nonamiya [84]
3 years ago
13

33. Why is the amniotic egg such an important derived characteristic of amniotes? Be sure to give 3 characteristics of an amniot

ic egg and fully explain their importance.
Biology
1 answer:
katovenus [111]3 years ago
4 0

The another are differentiated from the anamniotes by the presence of their terrestrially adapted eggs. These eggs are protected by amniotic membranes. Development of these membranes have provided another with their own aquatic environment needed for development.

The development of amniotic membrane is a characteric of amniotic eggs. These membranes include: chorion' facilitating the exchange of gases between the embryo and the mother; amnion, protection the embryo from injuries and shock and also aiding hydration; allantois, excretion of nitrogenous waste such as urea and uric acid etc and also help in respiration.

Another characteristics is waterproof skin due to the presence of lipids.

Another is the existence of costal rib ventilation of the lungs: enables of loss of CO2 through the lungs rather than buccal pumping as foumd in anamniotes.

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PLSSSS HELP ASAP
Nastasia [14]

Answer:

Reproductive System

All the body systems have one role or the other to play in digestion and absorption. Even the excretory system removes waste and toxins from the body, leaving the useful materials.

However, the reproductive system is not actively involved in digestion.

8 0
3 years ago
Which of the following statements about biological membranes is FALSE? Which of the following statements about biological membra
Brrunno [24]

Answer:

Option (1).

Explanation:

Biological membrane mainly composed of lipids and proteins with the small amount of carbohydrate exposed on the outer surface of the membrane. This membrane plays an important role as it separates the cellular environment and facilitate the transport of the selected molecule.

The flippase enzyme is required to transport the molecules from one side of the membrane to the other membrane. Lipids and proteins can undergo lateral motion but at the different rate within the membrane.

Thus, the correct answer is option (1).

5 0
3 years ago
What average speed, most nearly, is required to run a 4 minute mile? (1 mile = 1.609 km), (1 min = 60 seconds), (Av Speed = Dist
Rasek [7]

Answer:

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4 0
3 years ago
Describe the Watson and Crick model of DNA structure. How did it fit the data provided by Chargaff and the X-ray diffraction pat
icang [17]

DNA model given by Watson and Creek in the year of 1953 gave a very detailed study regarding the structure of B DNA which is valid till date and is essentially corroborating with Chargaff's data and Xray diffraction pattern.

<h3><u>Explanation:</u></h3>

The DNA is the most common nucleic acid found in the living organisms as a genetic material. As stated by Watson and Creek, this DNA contains a double helical structure with two sugar phosphate backbones and the nitrogen bases getting projected from it inwards. The backbones are formed of ribose sugar and phosphate and joined together with a phosphodiester bond. The ribose sugar is attached to phosphates at its 3' and 5' Carbon atoms. The nitrogen bases found in DNA are Adenine, Guanine, Thymine and Cytosine. The Adenine has two hydrogen bonds with thymine and guanine has 3 hydrogen bonds with cytosine.

Each full turn of a helix is 34A and each base pair is 3.4A apart. The distance between two strands of DNA is 20A.

Chargaff's rule regarding the equal amount of adenine and thymine as well as guanine and cytosine is matching with this structure. All the other rules also do match with this DNA structure.

3 0
3 years ago
1. Which type of compound is found in every DNA molecule?
Anit [1.1K]

Answer:

nucleotides

Explanation:

7 0
3 years ago
Read 2 more answers
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