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sdas [7]
3 years ago
15

What is a covalent bond

Biology
2 answers:
Klio2033 [76]3 years ago
8 0

Covalent bond is a s bond in which the electrons are shared between each other.

Answer: Option D

<u>Explanation:</u>

The elements when they form molecules, they satisfy their valence needs and form certain bonds that make them stable. The presence of 8 electrons in the outer most orbital of an element makes the element stable.

Thereby to balance this need the elements either transfer the electrons between each other, gain electrons or share electrons in case of which  formation of a covalent bond happens.

Verdich [7]3 years ago
6 0
Answer: A bond in which electrons are shared.
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What would happen if more forests are cut down?
Vikentia [17]

Answer:

Life could get harder

Explanation:

Forests are habitats for animals and also food for both humans and animals so if they were to get cut down it could take some time for everyone to find what they need and forests also produce oxygen as well so without enough forests or trees to produce oxygen bad things could happen.

4 0
3 years ago
Read 2 more answers
An exocrine gland that has an unbranched duct would be classified as a __________.
Firdavs [7]

Answer:

B) Multicellular Simple gland

Explanation:

Exocrine Glands:Glands that secrete their products onto the apical(or epithelia) surface directly or via epithelial ducts or tubes that are connected to the apical surface. These Exocrine glands are composed of highly specialized epithelial cells..

Exocrine glands can either be branched or Unbranched based on the arrangement.

*Multicellular simple glands*:Glands that have an *unbranched duct* into which cells secrete. Each secretory portion empties separately on an epithelial surface.

6 0
3 years ago
How would an x-ray technician position the camera to produce a frontal view of a patient's abdominal cavity?
leva [86]

Answer: Option A. "In front of the patient, pointing at his navel"

Explanation:

The X-ray of abdominal cavity is known as Abdominal x-ray. It has same principle as X-ray and uses ionizing radiation to take pictures of inner parts of abdominal cavity such as intestine, stomach, liver and spleen. it is used to diagnose patients with vomiting, unexplained pain, and nausea.

While diagnosing  patient's abdominal cavity, x-ray technician position the camera in front of the patient, pointing at his navel in order to produce a frontal view of abdominal cavity.

Talking about a x-ray machine, it is a compact apparatus which can be taken to the patient in a hospital bed or the emergency room. The x-ray tube connects flexible arm which further extends towards the patient and an x-ray film holder (image recording) plate is placed under the patient.

The technologist will ask the patient to take position on the x-ray table or bed and will position x-ray machine over the abdominal area of the patient, in order to take the frontal view of abdominal cavity. The patient will be asked to hold their breathe to get a clear picture. The technician will turn on the x-ray machine that allows  x-ray machine  to produce a small burst of radiation which passes through the abdominal area and records the frontal view of  patient's abdominal cavity. As a result, soft tissue shows up in shades of gray and air appears black while bones appear white on the x-ray, through which patient can be diagnosed.

Hence, the correct option is A "In front of the patient, pointing at his navel".

8 0
3 years ago
What is the functional unit of the nervous system
Serga [27]
The neuron, or nerve cell, is the basic functional unit of the nervous system
5 0
3 years ago
(This is about DNA)
n200080 [17]

Answer:

B. 20%

Explanation:

The complementary base-pairing rule states that Adenine always pairs with Thymine (A with T), and Cytosine with Guanine (C with G).

Because of this, the amount of Adenine present must be the same as the amount of Thymine present, and the same for Cytosine and Guanine.

This means that if there is 30% Adenine, there is also 30% Thymine as each A base is paired to a T base. This adds to 60%, so Cytosine amounts and Guanine amounts must add to 40% to make 100%.

Since they are equal in amount, there must be 20% of each.

Therefore the answer is B. 20%

There is 30% Adenine, 30% Thymine, 20% Guanine and 20% Cytosine.

Hope this helped!

6 0
2 years ago
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