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STatiana [176]
2 years ago
13

Basophils of the blood help to get defensive leukocytes to the site quickly by releasing an anticoagulant called __________ and

a vasodilator called __________. a. selectin; prostaglandin b. histamine; heparin c. heparin; histamine d. prostaglandins; selectin
Biology
1 answer:
Alex2 years ago
4 0

Answer:

Basophils of the blood help to get defensive leukocytes to the site quickly by releasing an anticoagulant called ___heparin_______ and a vasodilator called _____histamine_____

Explanation:

Basophils are a type of white blood cell containing specific granules that release histamine (vasodilator) and heparin (a substance with anticoagulant action) and azurophilic granules that contain lysosomes. They are important in allergic and anaphylactic processes.

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Which two cellular organelles in eukaryotes have both electron transport systems and chemiosmotic mechanisms?
aalyn [17]

Answer:

Mitochondria and the chloroplast

Explanation:

Electron transport refers to the transfer of of electrons from electron donors to electron acceptors via a reduction-oxidation reaction.  

In the mitochondria the process is called Oxidative phosphorylation whereas in the Chloroplast it is called Photo-phosphorylation since it utilizes light.

Chemiosmotic mechanisms allow the movement of ions across a semi-permeable membrane down their electrochemical gradient.

In both mitochondria and chloroplast,have these mechanisms for the production of ATP .

7 0
2 years ago
All of the following are characteristics of modern amphibians except:
Tom [10]

Answer:

Endothermic

Explanation:

Amphibians are ectothermic organisms. Ectothermic animals are coldblooded animals. From the options above, the correct answer is endothermic because amphibians are not hot blooded and are never endothermic.

4 0
2 years ago
Explain why the farmer in the scenario below failed to grow crops.
shtirl [24]

hydroponic farming is when you try to grow plants without soil, Terrestrial plants may be grown with only their roots exposed to the mineral solution, or the roots may be supported by an inert medium, such as perlite or gravel. The Farmers plants could have been daying at the same rate because some plant need dirt, or mabye the root were just to long.

If I am right please mark brainest, if not tell me what I did wrong

and feel free to ask me anymore question. Have a nice day!

4 0
2 years ago
Cephlochordates have a backbone that extends from their tail to where? their gills their anus their heart their head
Lostsunrise [7]
Pretty sure it’s to their neck.
5 0
2 years ago
After the completion of meiosis in humans, a diploid germ cell has produced cells with half the original chromosome number, gene
Andreas93 [3]

Answer: 23

Explanation:

After the completion of meiosis in humans, a diploid germ cell has produced cells with half the original chromosome number, generating 23 haploid nuclei.

Meiosis is cell division that reduces chromosome number by half. Hence, a diploid germ cell with 46 chromosomes (23 pairs) is halved to 23 nuclei at the end of meiosis, the 23 nuclei will be carried by the sex gamete

7 0
2 years ago
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