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omeli [17]
3 years ago
9

"He was awakened in the middle of the night by a low growling that sounded as if it was coming from just outside his tent. In re

sponse, the cells of his adrenal medulla began to secrete epinephrine, causing his palms to sweat, his heart to race, and his hair to stand on end." Epinephrine is involved in what type of signaling as described in this passage
Biology
1 answer:
Nutka1998 [239]3 years ago
3 0

Answer: Adrenaline, also known as epinephrine, is a hormone and medication. Adrenaline is normally produced by both the adrenal glands and a small number of neurons in the medulla oblongata, where it acts as a neurotransmitter involved in regulating visceral functions (e.g., respiration).It plays an important role in the fight-or-flight response by increasing blood flow to muscles, output of the heart, pupil dilation response and blood sugar level. It does this by binding to alpha and beta receptors.[

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Which characteristic distinguishes fungal cells from plant cells
sertanlavr [38]

Answer: Feeding behaviors, trophic levels, cell wall composition, and their organelles distinguish fungi from plants.

Explanation:

While plants and fungi are both eukaryotes, they differ in terms of feeding behaviors, trophic levels, cell wall composition, and their organelles.

  • Cell walls: both are non-chain polysaccharides (sugars) that function as structural support; yet fungal cell walls are composed of chitin while plant cell walls are made up of cellulose

  • Feeding: fungi secrete compounds that digest their food sources before they can take in nutrients and they store food as <em>glycogen; </em>while plants do not require a means of pre-digesting food and store their food as <em>starch.</em>

  • Organelles: plant cells contain <em>chloroplasts</em>, small green structures with chlorophyll that causes their characteristic coloration. Unlike plants, fungi do not photosynthesize to make their own food or contain chloroplasts.

  • Trophic level: are strictly <em>heterotrophs or decomposers, </em>depending on other organisms for survival. Their chloroplasts enable them to carry out photosynthesis, thus they are <em>autotrophs or producers. </em>

5 0
3 years ago
Classify each of the following as homozygous dominant, heterozygous, or homozygous recessive.
mario62 [17]
First, we will elaborate the terms that are being used.

Heterozygous:
This means that the organism has a set of alleles which are different from one another. One copy may be for the dominant trait and the other for the recessive one.

Homozygous: 
The organism has two copies of the same allele

Dominant:
An allele that will express itself even if only one copy of it is present. These are usually represented by capital letters.

Recessive:
An allele that requires both copies to be expressed. These are usually represented by lower-case letters.


A: Heterozygous

B: homozygous recessive

C: Homozygous dominant

D: Homozygous recessive

E: Homozygous dominant
7 0
3 years ago
Using no more than 13 propositions, compare and contrast the effects of the autonomic divisions.
Leviafan [203]
Using no more than 13 propositions<span>, create a Concept Map to </span>compare and contrast<span> the motor neurons in the somatic and </span>autonomic<span> nervous systems. </span>
3 0
3 years ago
Anyone please help me with this
kati45 [8]
I believe it’s d. 5-Carbon sugar.

3 0
3 years ago
1. Why are these moths called "peppered moths?"
riadik2000 [5.3K]

Answer:

they got black dot on their white wings.

Explanation:

And black pepper moths dont but they are natural selected from the white pepper moths.

8 0
3 years ago
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