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ira [324]
3 years ago
9

Is grasshopper separation of oxygenated/Deoxygenated blood yes or no

Biology
1 answer:
MissTica3 years ago
4 0

no because Separation of oxygenated and deoxygenated blood in the heart of three types of animals. The three-chambered frog heart mixes oxygenated and deoxygenated blood in the ventricle. Therefore, the body never receives fully oxygen-rich blood.

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Why are the interactions and tissues in the menstural cycle considered to be feedback mechanisms
mamaluj [8]

it is considered feedback mechanisms because the menstrual cycle only happens when the hormone is released, it causes the target tissues to react, that reaction is the feedback.

7 0
3 years ago
The Neanderthal skeleton known as the "old man" showed evidence of many injuries over a long life. Several broken bones had heal
UNO [17]

Answer:

It has been suggested that these kinds of lesions may be indicative of  fighting with other members of its species or the attacks of predators

Explanation:

The Neandertals were exposed to very hard environmental conditions, thereby these lesions may be indicative of such conditions to which this species was exposed.

5 0
3 years ago
What are two things found in each of the two layers of the skin
amm1812
<span>The epidermis is mainly a composition of cells called keratinocytes. Defensive cells are known as Langerhans cells and are one of the three types of specialized epidermal cells, The epidermis is bonded to the dermis. Hairs grow in the dermis and up to the epidermis. So, the dermis and the epidermis both have cells and hair. </span>
7 0
2 years ago
How do chromosomes carry information
likoan [24]

Answer:

DNA.

Explanation:

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6 0
3 years ago
Read 2 more answers
g protein-activated inwardly rectifying potassium channels mediate depotentiation of long-term potentiation
Svetlanka [38]

Long-term potentiation (LTP) is considered a cellular correlate of learning and memory. The presence of G protein-activated inwardly rectifying K(+) (GIRK) channels near excitatory synapses on dendritic spines suggests their possible involvement in synaptic plasticity. However, whether activity-dependent regulation of  channels affects excitatory synaptic plasticity is unknown. In a companion article we have reported activity-dependent regulation of GIRK channel density in cultured hippocampal neurons that requires activity oF receptors (NMDAR) and protein phosphatase-1 (PP1) and takes place within 15 min. In this study, we performed whole-cell recordings of cultured hippocampal neurons and found that NMDAR activation increases basal GIRK current and GIRK channel activation mediated by adenosine A(1) receptors, but not GABA(B) receptors. Given the similar involvement of NMDARs, adenosine  receptors, and PP1 in depotentiation of LTP caused by low-frequency stimulation that immediately follows LTP-inducing high-frequency stimulation, we wondered whether NMDAR-induced increase in GIRK channel surface density and current may contribute to the molecular mechanisms underlying this specific depotentiation. Remarkably, GIRK2 null mutation or GIRK channel blockade abolishes depotentiation of LTP, demonstrating that GIRK channels are critical for depotentiation, one form of excitatory synaptic plasticity.

Learn more about receptors here:

brainly.com/question/11985070

#SPJ4

8 0
1 year ago
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