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garri49 [273]
3 years ago
13

What is the relationship between organisms that have blood?

Biology
1 answer:
True [87]3 years ago
6 0

Answer:

There are three general types of symbiosis: <em>mutualism, commensalism, and parasitism.</em> Based on the nature of the interaction between organisms, symbiotic relationships are loosely grouped into one of these types. Mutualism is a mutually beneficial relationship in which both organisms benefit.

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Howard is constructing a model of the tree of life. Which strategy would most likely ensure that all of Earth's organisms are re
scZoUnD [109]

Answer:

The answer is A. Draw branches for the domains: Bacteria, Archaea and Eukarya

Explanation:

Three Domains of Life:

Bacteria, Archaea and eukarya are the three principal branches or domains of the tree of life that explains the evolutionary relationship between all living organisms.

The first two domains, bacteria and archaea comprise the prokaryotic unicellular organisms. The third domain, eukarya includes all eukaryotic organisms.

All other organisms have evolved from these three principal domains.

3 0
3 years ago
Which of the following statements is true?
Tcecarenko [31]
Stress can cause a virus to switch from the lysogenic cycle to the lytic cycle.
8 0
3 years ago
G protein‑coupled receptors (GPCRs) and receptor tyrosine kinases (RTKs) are two basic receptor types by which cells transduce s
weqwewe [10]
<h2>GPCRs and RTKs</h2>

Explanation:

1) Phosphorylation of receptor can terminate signal or desensitize receptor: GPCRs because when signal persists a protein kinase receptor is activated,this further catalyse the phosphorylation of several serine residue at cytosolic phase of 7 transmembrane

Phosphorylated transmembrane recognized by arrestin protein blocks interaction between trimeric G protein and receptor thus blocks signal transduction

2) Autophosphorylation of receptor can initiate signal: RTKs because receptor dimerization activates intrinsic tyrosine kinase activity by which they phosphorylate its own tyrosine residue on cytosolic phase

3) Structure contains seven transmembrane helices: GPCRs because it consists of single polypeptide and spans the membrane 7 times hence called 7 transmembrane;it recognizes external signal and activates trimeric G protein

4) Ligand binding induces conformational change in receptor: RTKs because normally RTK exist in monomeric form in absence of any ligand molecule but when any ligand molecule binds receptor starts to dimerize

5) Receptor activation causes phosphorylation of its cytosolic subunits: RTKs because when receptor gets activates the intrinsic tyrosine kinase activity by which they phosphorylate its cytosolic subunits

6) An example is the insulin receptor: Insulin receptor is present on plasma membrane and belongs to RTK family and always exist in dimeric form

7) Transports some ligands through the membrane: Neither GPCR nor RTK;ligand gets transported through the membrane through ligand gated channel

8) An example is the epinephrine receptor: Epinephrine is an endocrine  hormone produced by adrenal glands in stress condition and prepare body for fight and flight;Epinephrine uses GPCR signalling pathway by four different types of membrane receptors in different tissues

9) Activate heterotrimeric G proteins directly: Transmembrane protein of GPCR recognizes the external signal and activates G protein,activated G protein binds with effector enzyme and activate it which further produce or destroy secondary messenger that carry message from cell surface to cell interior

7 0
3 years ago
PLEASE HELP PLEASE!!!! DOES ANYONE SOMEONE NAMED HIROJABAMI!?!?!? PLEASE HELP!!!!.....
Svetach [21]

Answer:

well I dnt know

btw thanks for ur points I really needed that.

4 0
3 years ago
Just a few hours after the birth of a baby, the mammary glands start producing milk. Which hormone stimulates this event?
77julia77 [94]
Just a few hours after the birth of a baby, the mammary glands start producing milk.

Prolactin is the hormone that stimulates this event!
4 0
3 years ago
Read 2 more answers
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