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eduard
3 years ago
8

If a DNA molecule is compared to a spiral staircase what parts make up the steps

Biology
1 answer:
blondinia [14]3 years ago
5 0
The steps or rungs of the DNA molecule are composed of respective nitrogenous bases, complementary base pairing by forming respective hydrogen bonds with other nitrogenous bases of the other nucleotides that make up the second polynucleotide strand of DNA. The sides of the DNA molecule are composed of sugar and phosphate making up the sugar phosphate backbone.
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What is the role of auxin in tropic responses?
Verizon [17]

Auxin is a hormone of a plant. It is produced in the stem. This is what causes phototropism. This also helps the plant maintain apical dominance.

6 0
3 years ago
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8- Most gymnosperms have reproductive structure called cones<br> true<br> false
Alla [95]

┏─━─━─━─━∞◆∞━─━─━─━─┓

      ✭✮Here is your Answer✭✮

┗─━─━─━─━∞◆∞━─━─━─━─┛

Answer:

<u><em>True</em></u>

Explanation:

<u><em>Most gymnosperms have reproductive structures called cones. Male cones produce pollen. Female cones contain at least one ovule. An ovule is a structure that contains an egg cell. After being fertilized, the ovule develops into a seed.</em></u>

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3 years ago
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7. Scrie metoda corectă de separare a substanțelor corespunzătoare următoarelor
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Answer:

por favor, ingles para bio

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5 0
3 years ago
In which statements regarding medications taken by a client diagnosed with copd do the the drug name and the drug category corre
emmainna [20.7K]
There are choices for this question namely:

a) Ciprofloxacin is an antibiotic.
b) Decadron is an antibiotic.
c) Bactrim is a bronchodilator.
d) Albuterol is a bronchodilator.
<span>e) Prednisone is a corticosteroid.
</span>
The correct answers are "ciprofloxacin is an antibiotic", "albuterol is a bronchodilator", and "prednisone is a corticosteroid". Ciprofloxacin is an antibiotic in the class of fluoroquinolones, effective against respiratory infections since patients with COPD has mucus hypersecretion which predisposes the patient to respiratory infections. Other antibiotics include respiratory fluoroquinolones such as levofloxacin and moxifloxacin, cephalosporins such as cefuroxime and ceftriaxone, and beta-lactams such as co-amoxiclav. Albuterol is a short acting beta-agonist (SABA) which actions as a bronchodilator by relaxing bronchial smooth muscles. Other popular SABA is salbutamol. Prednisone is a corticosteroid which actions to prevent inflammation by blocking the arachidonic acid pathway and therefore block the formation of inflammatory mediators. 

Decadron is dexamethasone which is a steroid. Bactrim is TMP/SMX which is an antibiotic.
3 0
3 years ago
Due to the constant random motion of its atoms and molecules, a substance will exhibit net movement from a region where it has a
LenaWriter [7]

Answer: The net movement is called diffusion.

Explanation:

Diffusion is the net movement of substance from region of higher concentration to a region of lower concentration.

The movement is due to constant and random motion characteristics of atoms ,ions and molecules due to kinetic energy. It continues until the concentration of substance is uniform.

4 0
4 years ago
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