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ludmilkaskok [199]
3 years ago
11

What creates a positive charge inside the cell during a nerve impulse?

Biology
1 answer:
sergejj [24]3 years ago
8 0

Answer:

a gated sodium channels open and sodium ions flood into the cell

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Please help with questions 9 and 10 !!!!!!!!!!
coldgirl [10]
Is this still needed
6 0
3 years ago
A lab technician is preparing agar medium. The medium requires 21 grams (g) of
docker41 [41]

Answer:

21.81grams

Explanation:

According to the question, an agar medium requires the following ingredients: 21 grams (g) of

agar, 500 mg of dextrose, 3 dg of sodium, and 1 cg of potassium per 1,000 milliliters (mL) of distilled water.

Hence, the dry ingredient contain 21grams (g) of agar, 500milligrams (mg) of dextrose, 3decigrams (dg) of Sodium, and 1centigrams (cg) of pottasium.

We need to convert all units (not in grams (g)) to grams.

1grams = 1000milligrams

500 milligrams = 500/1000

= 0.500grams.

1grams = 10decigrams

3decigrams = 3/10

= 0.3grams

1grams = 100centigrams

1centigrams = 1/100

= 0.01 grams

Therefore, we have 21g, 0.500g, 0.3g, and 0.01g

The total dry weight of the ingredients will be:

21 + 0.500 + 0.3 + 0.01

= 21.81grams

3 0
3 years ago
Which food component gives you the most energy? carbohydrate fat or protein
weqwewe [10]

Answer:  fat

Explanation:

Carbohydrates, fats and proteins are among the major nutrients in the food component.

  • Where proteins helps in growth of the body where as carbohydrates and fat provide energy. Protein has 4 calories per gram.
  • Carbohydrates are instant form of energy. All carbohydrates turn into glucose and raise our blood sugar. Carbohydrate has 4 calories per gram.
  • While fats are the slowest source of energy but provides most energy. Each gram of fat provides about 9 calories [ approximately more than twice that in proteins or carbohydrates].

Hence, fat gives you the most energy .

4 0
3 years ago
What are two traits required by molecules to support life?
vova2212 [387]

Answer:

Properties of Life. All living organisms share several key characteristics or functions: order, sensitivity or response to the environment, reproduction, growth and development, regulation, homeostasis, and energy processing. When viewed together, these characteristics serve to define life.

Explanation:

7 0
3 years ago
Identify the primary functions of the lymphatic system. A. Carry out immune responses.B. Drain excess interstitial fluid.C. Tran
emmasim [6.3K]

Answer:B- drains excess instertial fluid

Explanation:lymphatic system is a network of drainage that helps keep bodily fluid levels in balance.

Lymphatic system helps in conduct of lymph and also protect the body against infections.

It is made up of a network of lymphoid organs, lymph nodes, lymph ducts, lymph tissues, lymph capillaries

The lymphatic system, Functions by absorbing fluids that could leak from capillaries.

They also Absorb fatty acids and aid transport of fat to the circulatory system. Production of immune cells (such as lymphocytes, monocytes, and antibody producing cells called plasma cells)are done by lymophocytes

3 0
3 years ago
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