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AnnyKZ [126]
3 years ago
10

Which of the following is/are important features of a weight system? The ability to quickly and reliably jettison at least enoug

h weight to make the wearer positively buoyant at the surface or at depth. The ability to carry a minimum of at least 25 kg/55 lbs of weight. The ability to easily adjust the amount of weight used. Both the first and third answers are correct.
Biology
1 answer:
Svetradugi [14.3K]3 years ago
4 0

Answer:

Both the first and the third answers are correct

Explanation:

Weighting systems are worn by divers to help balance the buoyant or upward thrust movement of the water on equipment such as the diving cylinders carried along with the diver during the dive,

A quick release mechanism can aid in the emergency rescue of a diver by dropping the weight to increase the diver's buoyancy so as to rapidly rise to the surface

The weighting system arrangement is such that part or all of the weight could be  removed to allow an immediate increase in the divers buoyancy

Therefore, both the first and the third answers are correct.

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30 POINTS
Anika [276]
The answer is 9 because to find the amount of neutrons you have to take away the atomic number from the mass
7 0
3 years ago
Which of the following is an example of post-transcriptional control of gene expression?
konstantin123 [22]

Answer:

Option (c).

Explanation:

Transcription may be defined as the process of formation of RNA molecule from the template DNA with the help of enzymes and transcription factors. The transcription occurs in 5' to 3' direction.

Post trancriptional modification occurs in the RNA molecule that plays an important role in transcription as well as translation. The introns are removed from the RNA transcript and exons joined together is known as splicing. The alternative splicing occurs in which different protein isoforms are formed by the single exons.

Thus, the correct answer is option (c).

5 0
3 years ago
A person with type A blood (AO) is crossed with
riadik2000 [5.3K]

Answer:

25% type A, 25% type B, 25% type AB, 25% type O

If you put it into a punnett square:

          B                  O

A        AB                 AO

O       BO                 OO

you get 25% for each phenotype

7 0
2 years ago
List the four steps needed to extract Dna
dalvyx [7]
As an example I will tell you how to extract DNA from peas

1. Blender insanity 
<span>The blender separates the pea cells from each other, so you now have a really thin pea-cell soup
</span>2. Soapy peas

3. Enzyme Power

4. Alcohol Seperation 
5 0
3 years ago
The major organs which control acids and bases in the body are:
sertanlavr [38]

Answer:

1. kidneys 2. Lungs 5. Pancreas

Explanation:

The body's balance between acidity and alkalinity in the human body is regarded as the acid-base balance which is measured on the basis of the pH and the concentration of carbon dioxide and bicarbonate in the blood. The organs that controls acid-base balance are lungs, kidneys and pancreas. Theses organs control blood pH by releasing carbon dioxide from the lungs because it is a waste product slightly acidic in nature and excreting excess of acids and bases from the body.

7 0
3 years ago
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