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
IRINA_888 [86]
3 years ago
13

Is this single cell or multicellular ​

Biology
1 answer:
Verdich [7]3 years ago
5 0

Answer:

single celled

Explanation:

because i asked a teacher

You might be interested in
Is blood clotting an example of a positive or negative feedback mechanism? Explain your answer based on the description of the m
serg [7]

Answer:

Blood clothing is an example of positive feedback.

This type of feedback mechanism is useful to the body because it multiplies the factor that intervenes in clotting accelerating the process.

If a toxin affects the molecules that signal for platelets the feedback will not be effective enough to produce clotting and the body will keep bleeding.

Explanation:

Blood clotting is an example of positive feedback due to the fact that when the vascular endothelium is damaged  platelets will go to this area and activate themselves once they are in contact with the collagen fibers of the damaged structure. When the platelets are activated they will release the contents that is stored in their granules. One of the contents is a Gq-linked protein receptor cascade,  that will increase the concentration of calcium in the platelets. Calcium activates protein kinase C, which, in turn, activates phospholipase A2 (PLA2). PLA2  will modifies  an  integrin membrane  increasing its affinity to bind fibrinogen. The activated platelets change their  shape , and the fibrinogen cross-links with the integrin membrane aiding  in  the aggregation of adjacent platelets. After this the coagulation cascade takes place. there are two pathways the extrinsic  and the extrinsic one.

The extrinsic pathway will be activated due to tissular factor released  by the platelets and the intrinsic pathway will be activated due to endothelial collagen. The final product of both pathways is factor x.

Factor x will transform prothrombin into thrombin will activate the conversion of fibrinogen into fibrin. Thrombin will form a net of fibrin that will the clot.

A cascade reaction is useful because every component of the cascade are related making a quick reaction once that one of then is activated and can activate other or more factors.

If a toxin affects the molecules that signals for platelets, platelets will not go to the damaged area and in consequence there will not be thrombin and fibrin to form the clot together with platelets.

7 0
3 years ago
What is the flow of molecules in active transport?
professor190 [17]
Active transport is the movement of dissolved molecules into or out of a cell through the cell membrane, from a region of lower concentration to a region of higher concentration. The particles move against the concentration gradient , using energy released during respiration .
6 0
3 years ago
What are the six reasons a bone must be continually remodeled
Eduardwww [97]
Below are the 6 reasons a bone must be continually remodeled:

1.new cancellous bone must be remodeled into compact bone tissue.
2.bones increase and decrease in mass based on the stress they experience.
3.reshape the bone.
4.rapair the bone.
5.remodeled to replace worn collagen and hydroxyapatite.
<span>6.regualate calcium levels in the blood.</span>
4 0
3 years ago
A colleague has used computer modeling to design an improved enzyme. To produce this enzyme, the next step is to:___________.
Effectus [21]

Answer:

C) determine the nucleotide sequence for the improved enzyme.

Explanation:

Computational enzyme design (CED) can be defined as a bioinformatic <em>in silico </em>approach used to model, construct, and enhance enzyme catalysis. CED uses complex optimization algorithms that enable to direct evolution by using computational systems. As a further step, after the modelization of optimal enzymatic activity, bioinformaticians require to determine the nucleotide sequences which will be subsequently used to synthesize the corresponding enzymes.

5 0
3 years ago
Mark as brainiest<br> answer correctly
JulsSmile [24]

Answer:

○ acid rain

○ Secondary Consumers

Explanation:

Coal plant contains one of the following contaminants besides carbon dioxide: sulfur dioxide, which results in acid rain.

__________________________________________________________

This is the order of how a food chain looks:

Producers → Primary Consumers → Secondary Consumers → Tertiary Consumers...

It continues on for as long as it can.

I am joyous to assist you anytime.

7 0
3 years ago
Other questions:
  • Wyatt and Darnell are designing an experiment to study water mold reproduction. Water mold is an example of a protist that repro
    9·2 answers
  • Columns on the periodic table are called
    7·1 answer
  • At what pH values is pepsin likely to be denatured?
    8·1 answer
  • Once a substance is separated from the blood supply by the nephron, it is excreted in the urine. true
    12·1 answer
  • Protonema have large surface area to volume ratio you can predict that
    5·1 answer
  • Biology can help you to understand patterns of inheritance in your family. true or false
    12·1 answer
  • Science is concerned with ________ phenomena.
    14·1 answer
  • Heeeeelp <br> and thanks :)
    12·1 answer
  • PLEASE ANSWER FAST THIS IS FOR A TEST!!! ILL GIVE BRAINLIEST!!!!! Based on the weather map, what weather conditions would you pr
    7·1 answer
  • Please help :)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!