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MakcuM [25]
3 years ago
12

When plaque becomes heavy and hardened, it is called dental calculus or _________.

Biology
1 answer:
djverab [1.8K]3 years ago
3 0

Answer:

Tartar.

Explanation:

Dental plaque may be defined as the development of mass or biofilm of bacteria that grows on teeth surface. This plaque may present on teeth, between the teeth and on teeth front.

The plaque is first colorless but when it changes to dental calculus or tartar, the color of plaque becomes yellow or pale brown. This causes dental problem and different dental disease.

Thus, the answer is plaque.

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Hello I need help!!! did I get this right ​
alexandr1967 [171]

Answer:

Yeah it is correct.

Explanation:

Things enter the cell through the cell membrane through either active or passive transport which can tell you that the cell membrane controls what goes in and out.

8 0
2 years ago
Read 2 more answers
Which statement describes the condition of the heart at the point indicated in the electrocardiogram?
wariber [46]

Answer:

I think it's B

Explanation:

During QRS that's when the depolarization happens and when that happens the ventricles contract and push blood to the lungs and body.  

5 0
3 years ago
Instructions: Using what you have learned in the lesson and additional research, describe how the theory of evolution is support
olya-2409 [2.1K]

Answer:

fossils depict how our bones have changed from past year to today.

Explanation:

for example, wisdom teeth were use to eat raw meat and crush bones as shown in fossils like Lucy. Another example would be extinct animals preserved, they were not able to survive and adapt to the earths changing conditions.

7 0
3 years ago
A man has extra digits (six fingers on each hand and six toes on each foot). His wife and their daughter have the normal number
Mnenie [13.5K]

Answer:

The correct answer is - option D. 1/2

Explanation:

Extra digits on hands and feet mean an individual has six fingers in each hand and feet, this is known as polydactyly. Polydactyly shows an autosomal dominant type of inheritance pattern.

In this case, the mother is normal so she must be recessive alleles and the first daughter is normal so the father must have a recessive allele which means he is heterozygous.

Cross:

Man = Dd

Woman = dd

Their children :

    D      d

d   Dd    dd  

d  Dd    dd

Probability of polydactyl child = 2/4 or 1/2 or 50%

6 0
3 years ago
Some of the chemicals that make up living organism have only few structures (like DNA) other have many different structures (lik
elixir [45]

Answer:Proteins have many different functions, while DNA has limited functions.

Explanation:

Chemicals that make up the living organisms consists of more protein than DNA. This is because proteins have different functions while the function of DNA are limited. Excluding water and fat, the human body is made up almost entirely of protein. Most of the structural framework of the body such as bones, muscle, organs, skin and nails are made up of protein.

Protein are responsible to do most of the work in cells by acting as enzymes, hormones and carriers. Proteins are largely required for the structure, function, and regulation of the body's tissues and organs.

7 0
3 years ago
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