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zalisa [80]
3 years ago
5

Which causes vasoconstriction? a. α-Adrenergic antagonist b. Calcium channel blocker c. Acetylcholine d. Norepinephrine

Biology
1 answer:
Softa [21]3 years ago
5 0

Answer: Option D) Norepinephrine

Explanation:

Norepinephrine, also known as noradrenaline acts as both a hormone and neurotransmitter.

Its effects is similar to epinephrine, in that during stress conditions epinephrine stimulates the heart to beat and pump blood faster, while norepinephrine helps to maintain blood pressure, causing the narrowing of the blood vessels, known as vasoconstriction.

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One calorie is the quantity of heat that raises the temperature of
Marat540 [252]

Answer:

1 gram of water by 1°C

Explanation:

Calorie is a unit of energy and one calorie is defined as -

"The total amount of heat energy that is required in order to increase the temperature of 1 gram of water by 1°C or 1 K at 1 ATM pressure is known as 1 calorie."

It is widely used unit of heat in the field of nutritional science.

Joule is the SI unit of heat energy and mathematically the relation between joule and calorie is -

1 cal = 4.184 joule.

5 0
4 years ago
If an organism that is homozygous dominant is crossed with a heterozygote for that trait, the offspring will be __________.
Darina [25.2K]

Answer:

all of the dominant phenotype

Explanation:

6 0
2 years ago
Two scientists are studying how different soils affect tree growth. The scientists take care to use exactly the same procedures
Contact [7]

Answer:

I think the answer is c, "Most living things are different from each other, so they may respond differently"

Explanation: This answer makes the most since. The others don't have a scientific explanation, so i'd go with C.

7 0
3 years ago
Identify the position on the graph that gives the carrying capacity of the population.
dolphi86 [110]

The carrying capacity of any individual biological species is the maximum size of the population which can sustain indefinitely in that environment provided the necessary requirements like food, water and other environmental conditions are available.

The carrying capacity in the graph is the point on the graph where the line of population is horizontal. The graph has the population in y-axis and time period on x-axis. Alternatively if in the carrying capacity graph the line becomes parallel to x axis then it gives the carrying capacity. Here, at the point 2000 on y-axis and starting from 15 months in x-axis is the point of carrying capacity is marked with red horizontal line and green border in the image attached.


7 0
4 years ago
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How would you know if your results from experiment 2 show that the traits were inherited through mendelian genetics?
Karolina [17]
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It shows that the genes are not on the same chromosome and they are not included.
8 0
3 years ago
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