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insens350 [35]
3 years ago
11

Digestive system immune response

Biology
1 answer:
jekas [21]3 years ago
6 0
<span>Your immune system must determine whether or not to develop a tolerance to everything you put into your mouth. Whenever you try a new food, it must decide, “Do I like this or do I attack and kill it?” You are always ingesting bacteria and other substances with your food, no matter how fresh and clean it is, so these must be screened out. While your immune system will “okay” most foods, genetic and other issues may affect its decision. Recent studies also suggest that your immune system’s ability to develop correct tolerances depends a great deal on the balance of good bacteria inside your intestinal tract</span>
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A 0.2 M solution of NaCl contains ________ g of NaCl in 1 l of ________.
Maksim231197 [3]

Answer:

11.7 g in 1 L of water.

Explanation:

Molarity (M) or Molar concentration is a measure used in chemistry for solutes in a solution.

It is defined as mol/ L (number of moles per litre).

0,2 M means we have 0,2 mol/ L

In order to know how many grams this means we need to look up the molecular weight of the solute. In this case NaCl: 58.443 g/mol

\frac{1 mol NaCl}{58.443 g} = \frac{0.2 mol}{X g}

X= \frac{(0.2 mol x 58.433 g}{1 mol}

X= 11.69 g

The solution has 11.69 g of NaCl in 1 L of water since its an adequate polar solvent for NaCl dissolution.

8 0
3 years ago
Anyone help? im having trouble
Marysya12 [62]

Your missing some function/description.

Answer/Explanation:

Cytoplasm: [H] Jelly-like substance within the plasma membrane

Lysosome: [E] Sac filled with digestive chemicals

Mitochondria: [F] Structures that converts nutrients to energy

Centriole: [A} Structure that organizes motion of chromosomes

Endoplasmic reticulum: [G] passageways where chemicals are made

Vacuole: Sacs that store water, nutrients, or waste products

Cell membrane: [D]  Membrane that surrounds and protects the cell

Nucleus: [J] Structure that contain DNA and regulates genes

Cytoskeleton:  framework of protein fibers that guides organelle movement in the cell and help shapes the cell

Ribosome:[I] Structures that manufactures ribosomes

Nuclear membrane: [C] Membrane that protects the Nucleus
Golgi apparatus: [B] Stack of membranes that packages chemicals

Vesicle: [K] Package created by Golgi appaaratus

Nucleolus:[L] Small structure that synthesizes proteins

[RevyBreeze]

6 0
2 years ago
Which of the following is not a way that sexual reproduction increases genetic diversity?
cricket20 [7]

Answer:

Combined parenting leads to faster reproduction

Explanation:

Genetic diversity or variations in the physical appearance of organisms is caused by genetic or environmental factors. Reproduction brings about variation through gamete formation, fertilization and mutations.

During prophase 1 of meiosis, homologous chromosomes pair to form bivalents. The crossing over at the chiasmata results in new gene combination and variations.

Fertilization permits parental genes to be brought together. This causes variations in members of the same family.

Mutation is the spontaneous change in genetic make-up. These changes may be inherited by offspring bringing variations. However, combining parenting does not increase genetic diversity.

5 0
2 years ago
Commercial fishing in certain parts of the ocean decreases the number of small fish. As a result, large fish and sharks...
likoan [24]
It’s negative because the small fish provide food for the bigger fish
6 0
3 years ago
The region in the nucleus that is involved in ribosome production. *
Mumz [18]

Answer:

nucleolus

Explanation:

The nucleus contains the cell 's DNA and directs the synthesis of ribosomes and proteins. Found within the nucleoplasm, the nucleolus is a condensed region of chromatin where ribosome synthesis occurs.

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