BIOLOGY HIGH SCHOOL

Ep-19 class "b" fire extinguishers are best suited to fight what kind of fires?

Answers

Answer 1
Answer: Fire extinguishers are classified according to the type of fire. jThe A, B, and C ratings define what kind of burning materials each fire extinguisher is designed to quench.

Class B fire extinguishers are effective against flammable liquid-form fires. Examples of which are cooking oils, gasoline, kerosene and the like. There are two commonly used effective fire-fighting chemicals used in these types of fire namely monoammonium phosphate and sodium bicarbonate. The monoammonium phosphate can effectively smother the fire from these liquid combustibles while the sodium bicarbonate induces a chemical reaction to extinguish the fire.

Therefore, the Class B fire extinguishers are suitable for liquid form combustibles such as cooking oil, gasoline, kerosene or paint.

Related Questions

Mr. h's diagnostic report gives results of a procedure called laparoscopy, which is the ___.
what causes a protein to migrate on SDS-PAGE in such a way that it appears to be a protein that is much bigger
The classification levels of a human are listed below from largest to smallest. Eukarya Animalia Chordata Mammalia Primates Hominidae Homo sapiens Which level of biological classification do Mammalia and Hominidae represent, respectively? A)class and family B)order and class C)family and species D)species and kingdom
A population of mammals originally lived in a certain area surrounded by land then some of the organisms were taken to an island these two populations remain separated for hundreds of years
Who first identified nucleic acids, and where were they discovered

Which of the following best describes the structure of the sides of the DNA molecule? a double helix b alternating c single helix d twisted

Answers

a double helix best describes the structure of the sides of the DNA molecule. The correct option is A.

Thus, Deoxyribonucleic acid, or DNA, has a double helix-like structure. It is made up of two lengthy nucleotide strands that are spirally coiled around one another.

The complementary nitrogenous bases adenine (A) and thymine (T) and cytosine (C) and guanine (G) form hydrogen bonds that hold the two strands together.

This double helix structure is frequently compared to a spiral staircase or a twisted ladder.

Thus, a double helix best describes the structure of the sides of the DNA molecule. The correct option is A.

Learn more about Double helix, refer to the link:

brainly.com/question/28493914

#SPJ6
The structure of a DNA molecule is
A.Double Helix

What part of the paramecium functions as the food entry?a. oral grove
b. eye spot
c. pseudopods
d. food vacuole

Answers

Food enters through the oral groove.

Minerals are micronutrients required by the body for various key functions. The mineral _____ (a. calcium; b. iron; c. sodium) is required to carry oxygen in the blood to all body tissues, and _____ (a. vegetable oil; b. red meat; c. milk) is a rich source of this mineral.Minerals are micronutrients required by the body for various key functions. The mineral is required to carry oxygen in the blood to all body tissues, and is a rich source of this mineral.

Answers

Answer: 1) Iron, 2) Red meat

Explanation:

Minerals are micronutrients required by the body for various key functions. The mineral iron is required to carry oxygen in the blood to all body tissues, and red meatis a rich source of this mineral. Minerals are micronutrients required by the body for various key functions. The mineral is required to carry oxygen in the blood to all body tissues and is a rich source of this mineral.

Final answer:

The mineral iron is necessary for carrying oxygen in the blood to all body tissues. A rich source of iron isred meat. It's important to consume iron as the body cannot synthesize it.

Options B and B are Correct

Explanation:

Minerals are indeed micronutrients that aid in various key functions of the body. In this context, the mineral 'iron' plays an intrinsic role in the body as it helps carry oxygen in our blood to all the body's tissues. Red meat, amongst others, is considered a rich source of iron.

Iron ions are crucial to the formation of hemoglobin, a protein in red blood cells that transports oxygen from the lungs to the tissues in the body. A lack of iron can lead to iron deficiency anemia, a common type of anemia that causes fatigue and weakness because the body cannot produce enough healthy red blood cells to carry oxygen.

Moreover, it's important to know that minerals cannot be synthesized by the body; hence, they must be sourced from our diet.

Learn more about Iron and Red Meat here:

brainly.com/question/32031754

#SPJ11

Which form of cell transport allows small molecules to move from an area of higher concentration to an area of lower concentration without energy being required from the cell?a. osmosis
b. pinocytosis
c. phagocytosis
d. simple diffusion

Answers

Osmosis is the movement of small molecules from an area of higherconcentration to an area of lower concentration without energy being requiredfrom the cell. It only uses the difference in concentration of the surroundingmolecule. The answer is letter A. It is not a simple diffusion because thestatement above is in the form of cellular transport. It is not phagocytosis becausephagocytosis is the process by which a protest or phagocyte engulfs a solidparticle to form phagosome. It is not pinocytosis beacasue it is a form of celldrinking wherein small particles are brought into the cell and then suspendedwithin the vesicle.

that answer is wrong

Which statement about DDT best shows how science has been impacted by society? A.DDT led to insect resistance.
B.DDT was considered harmful and was replaced by other pesticides.
C.DDT was the first modern insecticide.
D.DDT was used in WWII to control malaria and typhus.

Answers

The correct answer is B. DDT was considered harmful and was replaced by other pesticides
D is wrong!! and i need the answer 

What part of the amniotic egg provides food for the embryo?a. the amniotic membrane
b. oxygen
c. the yolk
d. the shell

Answers

Answer:

c. the yolk is the correct answer.

Explanation:

The yolk part of the amniotic egg provides food for the embryo.

The yolk sac is present inside the egg and it provides nutrients to the developing embryo.

The yolk is the main source of nourishment for the embryo and carries all the fat.

The yolk part provides protein, energy, and water to the embryo.

yolk part becomes the umbilical cord through which food reaches the fetus and waste substances are removed.

it would be C the yolk because


Other Questions
Another method of _____ is to partially cut a stem and keep it moist until roots form.layeringcuttinggrafting
Name two ways water travels from land to enter the ocean
a typical human cell contains 46 chromosomes. after mitosis and cytokinesis, each of the two new cells formed from the original cell
LeeAnn wants to organize her data from researching the effect of hours of sunlight on plant growth to see if there is a trend in the data. Which would be the best way for LeeAnn to display her data for analysis so she can make predictions about the amount of light needed for maximum growth?in a line graphin a data tablein an area graphin a pie graph