Does a carbon monoxide detector go off continuously

1 answer:

7 0

Answer: CO alarms have a life expectancy of around seven years. The CO alarm will beep every 30 seconds or display ERR or END. If a CO alarm is at its end-of-life, replacing the battery will not stop the beep. Most detectors will beep 4 or 5 times in a row about every 4 seconds. Do not mistake dangerous levels of poisonous gas for a detector with low battery.

Explanation: (credits to the internet) Hope this helped! :D

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What process in the hydrological cycle occurs when water vapor in the air changes to liquid water? (A) Condensation (B)Evaporati

Anna007 [38]

Answer:

option A is correct

Explanation:

condensation is the process by which water vapors in the air are converted to liquid water

7 0

3 years ago

The cells and signaling molecules involved in the initial stages of the inflammatory response are ________.

navik [9.2K]

Answer:

Mast cells and histamines

Explanation:

Mast cells release several chemicals like histamine, cytokines, and other compounds that dilate blood vessels in the affected area. During the inflammatory reaction, mast cells release substances such as histamine. Histamine is a vasodilator and dilates blood vessels and increases their permeability.

The increased permeability of vessels makes the tissue fluid leak from the vessel. The swelling in the area stimulates pain receptors. This is followed by the arrival of neutrophils and monocytes (which become macrophages) through the capillary wall and phagocytosis of pathogens.

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3 years ago

Scientists have noticed that the entire DNA molecule has the same width, despite the fact that the four nucleotides are NOT the

const2013 [10]

I don't have access to your model, although I'm sure it's beautiful. Fortunately, this question can be answered without one.

A strand of DNA is a polymer consisting of monomeric nucleotide units. The nucleotides that are found in DNA are distinguished by their nucleobases: adenine (A), thymine (T), guanine (G), and cytosine (C). Each nucleotide in DNA is made up of a single nucleobase, a sugar (deoxyribose), and a phosphate group. These nucleotides form extremely long chains comprising phosphate-sugar linkages (covalent, phosphodiester bonds).

In native, double-stranded DNA, you have of these chains (or strands) arranged side-by-side such that the nucleobases on one chain are faced directly across <em>corresponding nucleobases </em>on the other chain, which enables hydrogen bonding between the bases.

There is a "rule" regarding which bases form hydrogen bonds with one another (Chargaff's rule): adenine with thymine and guanine with cytosine.

What does this have to do with the width of the DNA molecule?

The four nucleotides can be structurally classified into two categories: pyrimidines and purines. For our purposes, we only need to know that pyrimidines are six-membered rings and purines are a fusion of a six- and five-membered ring (basically, purines are pyrimidines attached to a five-membered ring). Thymine and cytosine are pyrimidines, and adenine and guanine are purines.

So, geometrically, adenine and guanine are larger (and, thus, "wider") than thymine and cytosine since adenine and guanine contain an extra ring. But remember our base-pairing rules: In native DNA, adenine (two rings) on one strand pairs up with thymine (one ring) on the other strand, and guanine (two rings) pairs up with cytosine (one ring) on the other strand.

Because there's a 1:1 ratio between A:T and G:C in double-stranded DNA, the DNA molecule consists of complementary base pairs that, in any given composition of, has equivalent widths. Put simply, the A=T pair has the same width as a G≡C pair because both base pairs are between one pyrimidine and one purine.

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3 years ago

Explain molecules in your own words

kramer

Answer:

A molecule is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. Molecules are made up of atoms that are held together by chemical bonds. These bonds form as a result of the sharing or exchange of electrons among atoms.

Explanation:

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2 years ago

Drosophila eye color is an X-linked trait. Red eye color is dominant, and white eye color is recessive. Which Punnett square sho

Anestetic [448]

The genotype of the mother must be heterozygous.

<h3>Punnet' square</h3>

In order to obtain a probability of 25% red-eyed males from the offspring, the mother must be heterozygous for the trait. The father can be of any genotype.

Thus, the likely genotype combination that will result in 25% red-eyed males are: