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Liula [17]
4 years ago
9

Molars and premolars of early archaic homo sapiens are reduced in size, while in some populations, front teeth may be increased

in size. how do anthropologists explain this observation
Biology
1 answer:
brilliants [131]4 years ago
6 0
The difference in tooth wearing according to anthropologists can explain feeding habits of early man. One explanation is the use of front teeth especially as tools (for cutting) also enabled evolution to favor their increased size. Teeth generally decreased in size as early man's brains became bigger and were able to process foods before eating.
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Non-steroidal anti-inflammatory drugs (NSAIDS) block the actions of the COX enzymes and their production of eicosanoids from ___
iVinArrow [24]

Answer:

Arachidonic acids

Explanation:

Non-steroidal anti-inflammatory drugs (NSAIDs) are drugs used due to their analgesic, anti-inflammatory effects.

It inhibit cyclooxygenase (COX) enzyme that takes part in the biosynthesis of prostaglandins (PGs) and thromboxane (TX) and the production of eicosanoids.

Eicosanoids are made by the enzymatic or non-enzymatic oxidation of arachidonic acid or from other polyunsaturated fatty acids (PUFAs) that are close to arachidonic acid which are 20 carbon units in length.

They are important cell signaling molecules that inhibit inflammation, allergy, fever,regulate abortion of pregnancy and normal childbirth, regulating cell growth.

6 0
3 years ago
Ileocecal sphincter tone decreases (relaxes) after distention of which structure?
stepan [7]
Ileocecal sphincter tone decreases after distention of colon. This sphincter separates ileum and cecum and is under the control of vagus nerve. 
6 0
3 years ago
In a hardy-weinberg population with two alleles, a and a, that are in equilibrium, the frequency of allele a is 0.2. what is the
Allushta [10]
The Hardy-Weinberg equation is as follows:
( {p + q})^{2}  = 1
{p}^{2}  +2pq +   {q}^{2}  = 1
Where:
(convert all % to decimals)

p= homozygous dominant
q= homozygous recessive
pq= heterozygous

While you did not specify whether the 0.2 frequency was for dominant or recessive, we can still figure out the answer.

Using the 1st equation, we can solve for the other dominant/recessive frequency:

1-0.2=0.8

Meaning that:

p= 0.8 & q=0.2

If the heterozygouz frequency is 2pq, then it becomes a simple "plug & chug" sort of approach.

2(0.8)(0.2)= 2(0.16)= 0.32

So, the heterozygous frequency would be:
0.32

Hope this helps!
8 0
3 years ago
Name the respiratory system
Aleonysh [2.5K]

Answer:

The respiratory system is made up of the organs involved in the interchanges of gases. It consists of the:

Nose

Mouth

Throat (pharynx)

Voice box (larynx)

Windpipe (trachea)

Airways (bronchi)

Lungs

8 0
3 years ago
Mold is made up of many fungi cells. Mold would be considered what type of organism?.
sweet-ann [11.9K]

Mold is considered a multicellular organism, made up of many fungi cells. Thus the correct answer is option (C) Multicellular Organism.

Multicellular organisms are made up of many cells thus it is different from unicellular organisms.

Some organisms, such as slime molds and social amoebae of the genus Dictyostelium, have both uni- and multicellular structures. These include every type of animal, as well as most fungi, terrestrial plants, and algae.

Colonies of identical individuals that come together to form organisms are called colonies. However, it can be difficult to distinguish between "colonial protists" and "real multicellular organisms" because the terms are interchangeable (colonial protists are occasionally referred to as "pluricellular").

A fungus with many cells is called mold. It is made up of hyphal filaments, which can group together to form mycelia. A mycelium is a collection of mycelia, and these structures make up the thallus, or body, of the mold.

The complete question is:

Mold is made up of many fungi cells. Mold would be considered what type of organism?

A. unicellular

B. prokaryotic

C. multicellular

To learn more about mold please click on the given link: brainly.com/question/3851425

#SPJ4

6 0
1 year ago
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