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SSSSS [86.1K]
3 years ago
13

The sides of the DNA ladder are made of two molecules that alternate. The alternating molecules are __?__ and __?__.

Biology
1 answer:
Rudik [331]3 years ago
3 0

Answer:

Sugar and phosphate

Explanation:

sugar and p h o s p h a t e

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The ___________ propel debris-laden mucus away from lower respiratory system structures.
Aliun [14]

The cilia propel debris-laden mucus away from lower respiratory system structures.

<h3>What is function of mucous membrane?</h3>
  • Another general defense against possible infections is provided by the mucous membranes that line the digestive, urinary, and respiratory tracts, as well as the nose, mouth, and lungs.
  • In order to cover and protect the more delicate cell layers underneath it and to trap waste and particle matter, including microorganisms, mucous membranes are made up of a layer of epithelial cells connected by tight junctions.
  • Because they feature ciliated appendages, which resemble hairs, the epithelial cells lining the upper portions of the respiratory tract are known as ciliated epithelial cells.
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8 0
2 years ago
What general trend does electronegativity follow on the periodic table? A It increases from left to right. O Bit varies randomly
irina [24]

answer: it increases from left to right

explanation:

the electronegativity of atoms increases from left to right across a period in the periodic table; it also decreases as you move from top to bottom down a group in the periodic table

3 0
3 years ago
Describe a continental rise
Alik [6]

Answer: Continental rise is an underwater sediment feature found between the continental slope and the abyssal plain. This feature can be found all over the world and represents the final stage at the boundary between the continents and the deepest part of the ocean.

Explanation:

El ascenso continental es una característica de sedimento submarino que se encuentra entre el talud continental y la llanura abisal. Esta característica se puede encontrar en todo el mundo y representa la etapa final en el límite entre los continentes y la parte más profunda del océano.

4 0
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The structural and functional unit of skeletal muscle is called a/an . The connective tissue covering around a fascicle is the .
Ainat [17]

Answer:

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The connective tissue covering around a fascicle is the perimysium

The part of a muscle fiber that contracts is called the myofibril

The connective tissue covering on the outside of a whole muscle is the Epimysium

Explanation:

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If a black guinea pig Bb were crossed with a white guinea pig bb, what would be the resulting phenotypic ratio?
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The phenotypic ratio would be 1:1 because there would be 1 black to every 1 white
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3 years ago
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