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Margaret [11]
3 years ago
11

Anyone know the answer for these two plzzzzz tell me

Biology
1 answer:
stepan [7]3 years ago
4 0

Answer:

The components of he respiratory system conduct air to the lungs ,such as the trachea (windpipe) which branches into smaller structures called Bronchi . The process of breathing (respiration) is divided into two distinct phases , inspiration (inhalation) and expiration (exhalation).

Explanation:

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Which of these physical factors most shapes the characteristics of a ecosystem? A) soil type B) longitude C) temperature and rai
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I believe it is temperature or rainfall. All of the factors are improtant but temperature comes first, cuz the temperature can also determine the air, and soil doesn't make a difference. Longitude doesn't have to do with an ecosystem.
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(03.05 hc) the base pairs in a dna strand are held together with hydrogen bonds. if the two nitrogenous bases in each pair were
asambeis [7]

The cell would have to take in and use more energy in order to break the covalent bonds.

The correct option is B

Hydrogen bonds :

are the chemical mechanism that governs the complementarity of the bases of DNA. This correspondence is unique thanks to the geometry of the hydrogen donor atoms and the acceptors that form the bases.

The (hydrophobic) bases are stacked inside the double helix of DNA; their plane is perpendicular to the axis of the double helix. The outside (phosphate and sugar) is hydrophilic.

The hydrogen bonds between the bases of one strand and the bases of the other strand keep the 2 strands united.

One purine on one strand necessarily binds to a pyrimidine on the other strand. As a corollary, the number of purine residues is equal to the number of pyrimidine residues.

* A binds to T (by 2 hydrogen bonds).

* G binds to C (via 3 hydrogen bonds: more stable bond: 5.5 kcal vs 3.5 kcal).

What part of the DNA strand do hydrogen bonds hold together?

hydrogen. Covalent bonds occur within each linear strand and strongly bond the bases, sugars, and phosphate groups (both within each component and between components). Hydrogen bonds occur between the two strands and involve a base from one strand with a base from the second in complementary pairing.

Learn more about DNA strand:

brainly.com/question/26466656

#SPJ4

7 0
2 years ago
Indicate if the given direction of lymph flow is correct or incorrect.A) Lymphatic capillaries to collecting vessels B) Lymph no
solniwko [45]
<h3><u>Answer;</u></h3>

A) Lymphatic capillaries to collecting vessels -Correct

B) Lymph nodes to lymph capillaries - Incorrect

C) Collecting vessels to lymphatic trunks- Correct  

D) Collecting ducts to collecting vessels- Incorrect  

E) Thoracic duct to cisterna chyli - Incorrect

F) Right sub-clavian trunk to thoracic duct - Incorrect

G) Intestinal trunk to right lymphatic duct - Incorrect  

H) Left lumbar trunk to thoracic duct - Correct

I) Lower extremity lymph to thoracic duct - Correct  

J) Right head lymph to thoracic duct - Incorrect

4 0
3 years ago
Which of the follow species is not a mammal?
svetlana [45]
<span>C. Gallus Gallus. The red junglefowl (Gallus gallus) is a tropical member of the family Phasianidae. It is the primary progenitor of the domestic chicken (though genetic evidence strongly suggests some past hybridisation with the grey junglefowl as well).</span>
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