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Ne4ueva [31]
3 years ago
14

Sympathetic innervation of the heart a: increases the heart rate. b: decreases the heart rate. c: increases the force of contrac

tions. d: decreases the force of contractions. e: has no effect on contraction force.
Biology
1 answer:
MatroZZZ [7]3 years ago
7 0

Answer: Option A

Explanation: The cardiovascular system is the system of human body which circulates blood through the complete body to supply oxygen to the whole body.

It also carries nutrients along with the blood and carries waste materials from the body to the heart.

Heart rate can be defined as the number of times the heart beats per minute and it is related to the load the heart has.

The sympathetic nervous system of the body releases hormone like epinephrine, nor epinephrine which increases the heart rate. There are many other factors that increase the heart rate such as exercise, stress et cetera.

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In pea plants, purple flowers (P) are dominant over white flowers (p). If two heterozygous purple-flowered plants are crossed wi
jolli1 [7]
For this you would use a punnet square (ill try my best to show it while typing)
heterozygous means different, so with the purple flower youd get the gene shown as Pp and put it into the punnet square

     P     p
P  PP  Pp
p  Pp   pp

given the possibilities in the punnet square the genes with at least one P is going to be purple and the genes with 2 "p"s are going to be white

so you would have
25% Dominate Homozygous Purple
50% Dominate Heterozygous Purple
25% Recessive Homozygous White
5 0
3 years ago
Read 2 more answers
Lysozyme is frequently found in such extracellular bodily fluids
stich3 [128]

Answer:

Lysozyme in the body fluid protects us from bacterial infection by damaging the cell wall of bacteria which ultimately kills the bacteria.

The bacterial cell wall is made up of NAG and NAM units which is joined by β (1-4) glycosidic bond. Lysozyme attacks on this bond and breaks it causing the damage in the cell wall of bacteria which leads to the death of bacteria.

Archaeal cell wall do not contain β (1-4) glycosidic linkage, it contains β(1-3) glycosidic linkage in its cell wall between NAT and NAG unit and lysozyme do not able to break β(1-3) glycosidic linkage between them so lysozyme do not cause any harm to the archaeal invaders.

8 0
3 years ago
Define each of the following zones:
Misha Larkins [42]

Answer:

Benthic Zone-  bottom of ocean

Pelagic Zone- the open ocean that is not near the  coast.

Oceanic zone- Zone that is beyond the continental shelf

Neritic zone- Zone that exists over the continental shelf

Photic zone- Zone where sunlight pass through

Aphotic zone- Zone where sunlight cannot pass through

Explanation:

There two important zones of the  ocean that can be termed as Benthic Zone which lies at bottom of ocean or sea and Pelagic Zone that could be imagined as a cylinder or water column that goes from the surface of the sea or ocean to its bottom. At the very bottom of the sea there lies an ecological region termed as Benthic Zone.The pelagic zone can also be termed as the open-ocean zone and it is in contrast with water that is nearer to the coast or continental shelf.

There are different zones that lies within a Pelagic Zone. They are

Oceanic, Neritic, Photic, Aphotic. The zone that lies beyond the continental shelf comes under this oceanic zone and Photic and Aphotic as the name suggests it refers to light. It referes to the zones where sunlight can penetrate and can not penetrate respectively.

8 0
4 years ago
Which represents a deletion of a section of the DNA shown here? A—C—T—G—G—A—T A. A—C—T—C—C—G—G B. A—C—T—A—G—A—T C. A—T—C—G—A—T D
Pie
It is choice d because the original sequence is ACTGGAT whereas in choice d  it is AGGAT because you removed the second and third bases (CT)
5 0
4 years ago
The table shows moose populations in Bullwinkle National Park, over a 35 year period. What could have been responsible for the d
kondaur [170]
The answer is A, a disease epidemic
3 0
4 years ago
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