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musickatia [10]
3 years ago
6

The infection-fighting cells that are produced by the immune system are manufactured in specific places around the body, for exa

mple, in the lymph nodes and the spleen. However, an infection can occur anywhere in the body. How do these infection-fighting cells manage to move around the body and get to the sites of infection? SC.6.L.14.5
A. There are lymph nodes every few millimeters all over the body.
B. They are excreted and float freely around the body, hunting infections.
C. They are carried around the body in the circulatory system.
D. They are moved around the body as muscles squeeze against them.
Biology
1 answer:
dezoksy [38]3 years ago
7 0
The correct answer is: C.They are carry around the body in the circulatory system.
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Suppose that when you examined your tubes (in this exercise) after incubating them, you noticed that the unsealed control contai
aivan3 [116]
The Oxidation-Fermentation Test is used to differentiate bacteria built on their capability to oxidize or ferment specific sugars.
Once microbes are inoculated,-One tube is sealed with a layer of sterile mineral oil to promote anaerobic growth and fermentation.-The other tube is left unsealed to allow aerobic growth and oxidation.
Organisms able to ferment the carbohydrate or ferment and oxidize the carbohydrate will turn the sealed and unsealed yellow throughout.
Organisms able only to oxidize the sugar will turn the unsealed yellow medium and leave the sealed medium green or blue.
Fragile fermenters will convert both tubes slightly yellow at the top.
Organisms not able to metabolize the sugar will either produce no color change or will turn the medium blue due to alkaline products from amino acids degradation.
Since Pair #1 showed complete yellowing for sealed and unsealed, these Organisms able to ferment the carbohydrate or ferment and oxidize the carbohydrate. So our interpretation will be that the organism has: Oxidation and fermentation OR fermentation only.
For tubes #2 and #3, the sealed tubes were green throughout suggests that they need oxygen for aerobic growth, and the fact that their unsealed tubes showed light yellowing is evidence for oxidation. Sealed - Green and Unseal - Yellow. Our interpretation for these pairs of tubes would be : Oxidation
Tube 1 can be either Oxidation and fermentation OR fermentation only. So reliability of this needs to be confirmed more with additional testing.
Tubes 2 and 3 are most reliable because they can only be oxidation only and no fermentation.
6 0
3 years ago
Drag each tile to the correct box.<br> Arrange the layers and faults from oldest to youngest.
kaheart [24]

The answers would be:

Layer D

Layer C

Layer B

Layer A

Layer E

Fault F

If you'd like to know why, here's more about the question:

The law of superpo sition states that the lower the layer, the older the rock is.

Looking at the layers alone, we can say that D is the oldest, and C would be next, so on and so forth.

The law of cross - cutt ing relationships, on the other hand, states that a geologic event, like a fault, is younger than the layer that it goes through.

So if we look at the figure given, the fault goes through all the layers, so we can say that it is younger than all the layers.

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6 0
3 years ago
True or false? The human skeleton is made up of less than 100 bones.
bulgar [2K]
False, the human skeleton has 206 bones as adults and 302 bones as a baby
6 0
3 years ago
Help please! Will give brainliest.
Serggg [28]

Answer:

the diagram shows the body structures that are similar though in different species due to common ancestry, this evidence is comparative anatomy.

8 0
3 years ago
Read 2 more answers
When you sneeze, air is forcefully exhaled from your nose. As the air exits the nose, what is the last structure the air will pa
inn [45]

The last structure the air will pass through will be External nares

<u>Explanation:</u>

The upper portion of the respiratory tract is the nasal cavity and the nose. The external nose forms the first and foremost respiratory tract area. Nose is the major part that is responsible in exchanging air with the atmosphere. It is responsible for the human survival.

There are two openings in a nose. These are called as nostrils. They are also called as exterior nares. The air from the atmosphere when inhaled it enters into the nostril. from there is is sent to the nasal cavity. Nasal cavity is the place where the air that is inhaled will be purified and it is transported to various human parts. thus, when air contains any dust or impurities it will make you to sneeze thereby the air gets out of the nose through  External nares

5 0
3 years ago
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