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LiRa [457]
3 years ago
11

Rickettsia are obligate intracellular parasites that are transmitted by arthropods. In which of the following places would you m

ost likely find the parasites living in the host organism during the course of infection?A. on the surface of heart cellsB. on the outer surface of the skinC. within the blood plasmaD. within macrophages
Biology
1 answer:
ss7ja [257]3 years ago
7 0

Answer:

Answer is C, within the blood plasma.

Explanation:

Note that, Rickettsia are transmitted by vectors that feed on blood, this means that the pathogen are residing in the bloodstream before transmission.

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Hydrocarbons...
nata0808 [166]

Answer:

Explanation:

All hydrocarbons are apolar

They contain covalent bond(s)

Hydrocarbons contain only carbon and hydrogen atoms

Hyrdrocarbons held by london forces

True answer is d

6 0
2 years ago
A “flight or fight” response occurs when the body perceives a type of threat. The hormone known as adrenaline is released which
kotykmax [81]

Answer:

It is the Endocrine System.

Explanation:

The Endocrine System controls and regulates almost all the hormones in your body.

Integumentary System = Skin Tissues

Excretory System = Release of Waste out of the Body

Digestive System = Breakdown of Food

7 0
3 years ago
If an animal cell is placed in plain water, It will swell and burst. The bursting of the cell is a result of which biological pr
densk [106]

Answer:

Osmosis is the process of having water pass from a low concentration medium to a high concentration one, given that the barrier (membrane) is semi-permeable.

Explanation

Cells encounter osmosis due to their semi-permeable membranes. Water can flow past cell membranes. A given cell placed into distilled water will have some water flow into it, causing it to burst. A given cell placed in a very concentrated water will have some water flow out of it, causing it to shrivel. A given cell placed in a solution with the same concentration of minerals as the cell will have an equilibrium of water flowing in and out. This is the case of IV (Intravenous therapy) when we want to deliver substances into a human blood. We want to make sure the liquid delivered is as concentrated as the blood to avoid cell shriveling or bursting.

This picture above sums up the 3 cases cells could face in a solution.

Good luck!

8 0
2 years ago
Which kind of ecosystem does the photograph most likely show?
solniwko [45]

Answer:

D. Swamp

Explanation:

The photograph shows an ecosystem that is saturated by water. The plant species shown in the photograph are mostly trees and wooden species. These are characteristics of a swamp ecosystem. A swamp ecosystem is a wetland characterized by trees and wooden species. Therefore, the photograph shows a swamp ecosystem.

7 0
3 years ago
2.The death of individuals reduces population size. If births outnumber deaths, the population grows.
valentinak56 [21]

Answer:

True

Explanation:

This would be like a birth to death ratio. If you have more deaths than births your population would decrease. See a similarity?

3 0
2 years ago
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