1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Burka [1]
3 years ago
11

Help please 20 points i mark u as brainlist

Biology
1 answer:
Artyom0805 [142]3 years ago
5 0

Answer:

a. Mastication process and formation of bolus in the oral cavity

b. The contraction in the stomach breaks the food down into smaller pieces. These pieces are then moved to the small intestine.

c. In the small intestine, food particles are broken down into nutrients, fat, protein and carbohydrates which are absorbed into the bloodstream.

Explanation:

a. First step of digestive system functioning is the mastication process and formation of bolus in the oral cavity.

b. The contraction in stomach, with the help of digestive enzymes and acids, break the food down into smaller pieces. The small pieces of food are then released into the first part of the small intestine (duodenum).

c. In the small intestine, two enzymes released from pancreas and gall bladder break down the food particles into fats, proteins, and carbohydrates. Thereon, nutrients and carbohydrates, proteins and fats are absorbed into the bloodstream.

You might be interested in
Which is a nonrenewable resource? soil fish wood coal
zimovet [89]
The Answer Is Coal Because Once We Use It All Up Its Gone
Hope This Helps !
- TyyBenjii
5 0
3 years ago
Read 2 more answers
Scurvy is a disease that until the nineteenth century was common among sailors and others whose diets were deficient in vitamin
alina1380 [7]
<h2>Scurvy </h2>

Explanation:

(a) Collagen is the major structural component of cartilage,bones and tendons

  • The basic unit of collagen is tropocollagen and each tropocollagen consists of three coiled left handed polypeptide chains called α chains
  • Generally each α chain consists of a repeating tripeptide sequence called: G-X-Y
  • Here G represents glycine; X represents proline and Y represents hydroxyproline
  • Rigidity of collagen molecule is due to presence of proline and hydroxyproline
  • Hydroxylation of proline is catalysed by prolyl hydroxylase enzyme which use ascorbate,α ketoglutarate and oxygen
  • α ketoglutarate is oxidatively decarboxylated to form carbon dioxide and succinate
  • Sequence of events leading from a dietary vitamin C deficiency to symptoms such as bruising and breakdown of supporting tissues includes: tissue levels of ascorbic acid is low;  enzyme prolyl hydroxylase is inactive;  proline is not hydroxylated;  the triple helix is inadequately stabilized; collagen breaks down;  defects in tissues that depend on collagen ; tissues that depend on collagen are subject to breakdown and bruising

(b) Sailors are no longer susceptible to scurvy because fresh fruits which are the source of vitamin C source are available now

British sailors called "limeys" to this day,this term reflects the British navy's use of limes

5 0
3 years ago
Select the two correct statements. Select the two correct statements. All proteins will show different degrees of divergence bec
nalin [4]

Complete question:

Comparisons of amino acid sequences can shed light on the evolutionary divergence of related species. If you were comparing two living species, would you expect all proteins to show the same degree of divergence? Select the two correct statements.

  1. All proteins will show the same degree of divergence because they are modified with the same rate of evolution.    
  2. All proteins will show the same degree of divergence because different species experience the same selection pressure.
  3. All proteins will show different degrees of divergence because different species live in different habitats and experience different selection pressure.
  4. All proteins will show different degrees of divergence because different species exhibit different patterns of behavior and have different metabolic pathways.
  5. All proteins will show the same degree of divergence because all cellular functions are essential to the survival of the organism.
  6. All proteins will show different degrees of divergence because some cellular functions are more essential than others to the survival of the organism.

Answer:

3) All proteins will show different degrees of divergence because different species live in different habitats and experience different selection pressure.

4) All proteins will show different degrees of divergence because different species exhibit different patterns of behavior and have different metabolic pathways.

Explanation:

  1. All proteins will show the same degree of divergence because they are modified with the same rate of evolution. FALSE.  
  2. All proteins will show the same degree of divergence because different species experience the same selection pressure. FALSE
  3. All proteins will show different degrees of divergence because different species live in different habitats and experience different selection pressure. TRUE  
  4. All proteins will show different degrees of divergence because different species exhibit different patterns of behavior and have different metabolic pathways. TRUE
  5. All proteins will show the same degree of divergence because all cellular functions are essential to the survival of the organism. FALSE
  6. All proteins will show different degrees of divergence because some cellular functions are more essential than others to the survival of the organism. FALSE.    

In this example, we are comparing different species, although we do not know how different they are. Changes in the proteins reflect the divergence between groups during evolution. Among different animals and plants, changes in proteins and their following maintenance can be associated with a group divergence and evolution.

The same proteins amino acid sequences in different species provide information about the divergence point between both species. Probably, the origin of genes and protein changes and the subsequent fixation of those changes by natural selection is the cause of most of the phenotypic variation observed between species. So, genes and proteins are subdued to selective pressures that vary according to the environment and the species.

In populations of the same species inhabiting different places with different environmental characteristics suffer changes that respond to their life habits. Proteins evolve in different degrees and take different routes, influenced by the selective pressures of the environment surrounding them. Ecological, behavioral, reproductive pressures, among others, vary between populations according to their own needs and produce changes that "model" the organisms when fixating. These changes are inherited generation after generation, leading to a divergence in the species.

3 0
3 years ago
. What is a negative impact that bioengineered plants may have on the environment?
4vir4ik [10]
Enable plants to produce a wide range of recombinant proteins on a rapid timescale.
3 0
3 years ago
Which of these is actually a large ring of cartilage?
SOVA2 [1]
The answer is Adams Apple
3 0
3 years ago
Read 2 more answers
Other questions:
  • The hydrilla plant was introduced to freshwater habitats, like ponds and streams, in Georgia. Scientists found out that it crowd
    14·2 answers
  • Which of the following climates is a high-latitude climate?
    6·1 answer
  • Match each organ or function with its body system. Skin excretes waste nails kidneys bladder provides exterior barrier
    7·1 answer
  • What are the advantages and disadvantages of genetic engineering?
    8·1 answer
  • Can someone help me?
    12·1 answer
  • Two solutions will be prepared with the mixture of distilled water and stock solution of KMnO4 (10 mM). Give the correct volumes
    14·1 answer
  • Which of the following is NOT a reason for asexual reproduction in somatic cells? A growth B replacement of dead cells С repair
    15·1 answer
  • How are community population and ecosystem similar?
    9·1 answer
  • <img src="https://tex.z-dn.net/?f=%20%7B%20%5Cqquad%7B%20%5Cunderline%20%7B%7D%7B%5Csf%7B1.What%20%20%5C%3A%20is%20%20%5C%3A%20C
    14·2 answers
  • Rhonda has severe thrush, a fungal infection of her mouth and throat. How should the fungicide be administered
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!