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Debora [2.8K]
2 years ago
15

Need help with this

Biology
1 answer:
dexar [7]2 years ago
3 0
Dendritic cells are the body’s first line of defence, not second !
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Please help and no wrong answers.
nataly862011 [7]
False. Pure substances that cannot be broken down into simpler substances by ordinary chemical means are called Elements.
3 0
3 years ago
Why is the lower epidermis of zebrina a complex tissue
NemiM [27]
This is just an educated guess. As the purple pigment, caused by anthocyanins, are on the bottom side of the plant, their purpose could probably be to direct the light. Specifically, a purple pigment on the bottom of the plant would absorb certain wavelengths near the purple spectrum, and reflect other wavelengths back toward the portion of the plant with chlorophyll. In this way, light does not simply pass through the leaf, instead it is reflected back in towards the chlorophyll to maximize the amount of light being used for photosynthesis.
3 0
3 years ago
Transport proteins in the cell membrane play an important role in cell transport by
Kaylis [27]

Answer:    Membrane transport proteins are specific and selective for the molecules they move, and they often use energy to catalyze passage. Also, these proteins transport some nutrients against the concentration gradient, which requires additional energy.

Explanation:

6 0
3 years ago
Which would most likely be biochemical evidence of evolution?
frez [133]

There are so many examples for that in different areas, like biology experiment carried out in our lab recently.

Here's one link : https://www.creative-biogene.com/Services/Biosimilar-Cell-Line-Development.html


5 0
4 years ago
Select all cell structures that are found in both prokaryotes and eukaryotes A plasma membrane B ribosoomes C nucleus cutoplasm​
saul85 [17]

Answer:

D. Plasma membrane.

Explanation:

The structure which is present in both of those cells is:

D. Plasma membrane.

Hope it helps!

5 0
4 years ago
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