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Nataly [62]
3 years ago
14

What is the process to determine the mass of a powdered substance using a weigh boat?

Biology
1 answer:
Arisa [49]3 years ago
5 0

Answer:

Explanation:

The mass of the substance is determined by subtracting the first reading from the second. A container holding the substance of interest is placed on the balance and weighed. This is the first reading. The substance to be used is removed from the container and the container weighed again.

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The process of phagocytosis involve all of the following except
evablogger [386]

Hello, I figured your question was missing its options so I went online to find them. Here they are:

The process of phagocytosis involves all of the following EXCEPT :

a. adhesion.

b. secretion of cytotoxins.

c. elimination.

d. vesicle fusion.

e. chemotaxis.

Answer:

The correct answer is: b) secretion of cytotoxins.

Explanation:

Phagocytosis is a mechanism performed by cells in which the plasma membrane engulfs a large particle. Phagocytosis is used by cells in the immune system to ingest pathogens like viruses and bacteria.

Phagocytosis consists of many steps:

  1. activation - the phagocytes that were resting are activated in the inflammatory response when a pathogen enters the body.
  2. chemotaxis  - this refers to the process in which the phagocyte moves to the pathogen by following the chemical factors released by these germs.
  3. adhesion - the phagocyte attaches to the pathogen.
  4. ingestion /vesicle fusion - the phagocyte sends pseudopods to engulf the pathogen, and places it in a phagosome, which is an endocytic vesicle. The phagosome and the phagocyte will fuse so the pathogen gets inside.
  5. elimination - the pathogen is destroyed in the phagocyte by the lysosomes present in it.

<u>The</u><u> secretion of cytotoxins</u><u> is not a part of the phagocytosis, and is a process exclusive to </u><u>T cells</u><u> (leukocytes that lack the ability to phagocyte).</u>

5 0
3 years ago
During which days of the menstrual cycle does the level of FSH increase?
Sophie [7]

Explanation:

During the first week after menses (in a 28 days cycle), FSH continues to increase, the follicles grow intensely and FSH increases the expression of its own receptor and of the LH receptor on the granulosa cells.

6 0
3 years ago
The amount of water retained by soil after drainage is : . نقطة واحدة gravitational capacity mineral water soil water field capa
KiRa [710]

Answer:

what does that mean

Explanation: I DO NOT SPEAK THAT LANGUAGE

8 0
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what is the process where rocks gas and dust collided to form the planets in our solar system including earth
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Outgassing<span> (sometimes called </span>offgassing<span>, particularly when in reference to </span>indoor air quality<span>) is the release of a </span>gas<span> that was dissolved, trapped, </span>frozen<span> or </span>absorbed<span> in some material. </span><span>Outgassing can include </span>sublimation<span> and </span>evaporation<span> which are </span>phase transitions<span> of a substance into a gas, as well as </span>desorption<span>, seepage from cracks or internal volumes and gaseous products of slow </span>chemical reactions<span>. </span>Boiling<span> is generally thought of as a separate phenomenon from outgassing because it consists of a phase transition of a liquid into a vapor made of the same substance.</span>
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The moon is thought to have formed when ____________________.
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A foreign object collided into Earth and a chunk fell off, forming the moon.
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