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Aleks [24]
2 years ago
9

16. Many tiny plants can be seen developing asexually along the edge of the mother-of-thousands plant leaf, as shown in the

Biology
1 answer:
Kay [80]2 years ago
4 0
ITS C NWKQNQOQMLQMQPoiioqoqoqnowq
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Noradrenaline facts tysm​
Amiraneli [1.4K]

Answer:

it is a catecholamine that stimulates alpha1 adrenergic receptors and, slightly, beta1 adrenergic receptors, without beta2 effect. It is the vasoconstrictor drug par excellence.

3 0
3 years ago
A forest has two groups of plants that appear to be very similar both phenotypically and genotypically. The major difference is
Gennadij [26K]
The basics would be that you'd need to find out if they could exchange genetic information. If not, they couldn't be considered part of one species. Set-up 2 artificial environments so both groups would produce pollen at the same time. Fertilise both plants with the other's pollen. Then fertilise the plants with pollen from their own group. 
Count the number of offspring each plant produces. 
If the plants which were fertilised by the opposite group produce offspring, they are of the same species. You can then take this further if they are of the same species by analysing if there is any difference between the number (and health) of offspring produced by the crossed progeny and by the pure progeny. You'd have to take into account that some of them would want to grow at different times, so a study of the progeny from their first sprout until death (whilst emulating the seasons in your ideal controlled environment). Their success could then be compared to that of the pure-bred individuals. 
Make sure to repeat this a few times, or have a number of plants to make sure your results are accurate. 
Or if you couldn't do the controlled environment thing, just keep some pollen one year and use it to fertilise the other group. 
I'd also put a hypothesis in there somewhere too. 
The independent variable would be the number of plants pollinated. The dependant variable would be the number of progeny (offspring) produced. 
5 0
3 years ago
Certain mental problems are thought to be caused by not having enough neutrotransmitters why would a lack of neurotransmitters c
vekshin1

Because neurones will not function properly neither will neuroreceptors if a person lacks neurotransmitters, these two parts (transmiters and receptors) all work together and depend on eachother.

Neurones are resposible for transmitting informations trought the body, and if neurotransmitters are no-existent, information may not be able to get to some body parts since neurotransmitters transmit the information.

Hope it helped,

Happy homework/ study/ exam!

3 0
3 years ago
Read 2 more answers
Select all the most common elements which bond to carbon. 1. Hydrogen 2. Nitrogen 3. Sulfur 4. Sodium 5. Potassium 6. Magnesium
Fantom [35]
Hydrogen as in hydrocarbons
nitrogen as in cyanides
sulphur as in carbon di sulphides
oxygen as in combustion of carbon

the rest i left out needs a third party element to bond to carbon
8 0
3 years ago
Read 2 more answers
If a pea plants alleles for height are tt what is true of it’s parents? Both parents were tall parents were short both parents c
makkiz [27]
Both parents contributed a recessive allele and were short.
7 0
3 years ago
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