BIOLOGY HIGH SCHOOL

Nutrients are brought to compact bone through which mechanism?A. diffusion through the bony matrix
B. diffusion through canaliculi
C. transport through Haversian Canals
D. transport through collagen fibers

Answers

Answer 1
Answer: The correct answer of the given question above would be option B. DIFFUSION THROUGH CANALICULI. Nutrients are brought to compact bone through the mechanism of diffusion through the canaliculi. Canaliculi are tiny channels between lacunae that allow for osteocyte communication. Hope this answer helps. 
Answer 2
Answer: B
The canaliculi are small channels embedded in the bone through which useful substances diffuse to the bone.

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What happens when the lungs recoil? A. Expiration occurs.
B. Internal respiration occurs.
C. Ribs and diaphragm muscles contract.
D. Inspiration occurs.

Answers

Answer:

The correct answer is option A.

Explanation:

Breathing is the exchange of air through the involved passages in between the atmosphere and the lungs. Inspiration is a process where we take air into the lungs from the atmosphere also known as inhalation.

Expiration is releasing air out of the lungs to the atmosphere. In expiration, the diaphragm relaxation and elastic recoil of tissue decrease the thoracic volume of lungs. That results in an increase the intraalveolar pressure in the lungs.

Thus, the correct answer is option A.
Expiration occurs when the lungs recoil.

A substance that carries sound waves is called

Answers

A substance that carries sound waves is called Fulcrum
It is called a Fulcrum

Carl Linnaeus developed a two word system for naming organism. It was called

Answers

The two-word system that was developed by Carl Linnaeus for naming an organism is called binomial nomenclature. Carl is also known as "Father of Taxonomy".  This system names species by giving them a two-part name. Both of the names of the living species are of Latin grammatical forms. Carl lived from 1707 until his death is 1778. He published a book called "Philosophia Botanica" in 1751. The book showed his way to keep up a botanical garden and his taxonomy system. 

Answer:

binomial nomenclature

Explanation:

You see a television commercial for a new antibiotic. The ad includes someone claiming that the antibiotic helped cure them of the flu. What are two reasons why you might question this claim?? EXPLAIN.

Answers

the flu cannot be "Cured" but can oly be surpressed so it in inactive. only the body white blood cells can kill and fully remove the virus. 
this is questiponed because it is true that it is limited to only one person, but this person may not of even had the flue to begin with. the the second question is which flue did the person have. swine flu is deadly and cannot be removed with antibodies or antibiotics. which is a pain because this flue kills the body. 
the second things that is questioned is, is the antibiotic stable enough for everyone?
everyone has a different immune structured in different ways. some antibiotics will not help certain people because of the lack of lipids and enzymes in the hosts blood. this can be fatal because the body has a natural buffer in the blood that the antibiotic can easily damage and kill the host. 
The sample is limited to one person so it doesn't provide a wide view of the product.
There is no expert opinion so it is not as believable.

Which of these animal groups was NOT present by the end of the Cambrian? bryozoans arthropods chordates mollusks

Answers

Only phylum bryozoans were not present during Cambrian period. It is an extensive fossil that did not appear in Cambrian nor pre-cambrian rocks. Bryozoans are found in the early Ordovician period. It could have probably existed during the Cambrian period but were soft-bodied or not preserved.

Brothers, Patrick and Michael, do not look very much alike. Patrick has green eyes and blond, curly hair like his mother. Michael has blue eyes and dark brown, straight hair like his father. These directly observable characteristics are a) phenotypes. b) genotypes. c) chromosomes.d) DNA.

Answers

The correct answer is A. Phenotypes

Explanation:

In genetics, the observable traits of an organism that includes behavior, physical traits, biochemical properties, etc. are known as phenotypes. These traits depend on both the genes of the organism (genotype) and the influence of the environment. Due to this, organisms of the same species with a similar genotype can display different phenotypes. This occurs in the case of Patrick and Michael as their observable traits or phenotype is different despite they are brothers. Thus, the observable characteristics are the phenotypes of an organism.

Answer:

a

Explanation:
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