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Anton [14]
3 years ago
14

The first line of defense involves which structure(s)? T-cells skin blood B-cells

Biology
2 answers:
WINSTONCH [101]3 years ago
4 0
The first line of defense is skin, since it is the epidermis (top layer of skin) that protects all internal fluids and structures.
Gemiola [76]3 years ago
3 0
Skin.
The first being the outer barrier like skin, the second being non-specific immune cells like macrophages and dendritic cells, and the third line of defense being the specific immune system made of lymphocytes like B- and T- cells.
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The cytoplasm divides during this segment of mitosis _____.
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Answer:

<em>The correct option is D) cytokinesis</em>

Explanation:

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Cytokinesis can be described as the last stage of cell division for both prokaryotes and eukaryotes. During this stage, the cytoplasm eventually divides and the cell splits into two with equal portions of cytoplasm in each side. Although the mechanism of cytokinesis is different for both plants and animals yet it is the final stage for both the cell type in which the cytoplasm splits.

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What microscope do you use to examine the internal structure of a nucleolus?
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8 0
3 years ago
In pea plants, purple flowers (P) are dominant over white flowers (p). If two heterozygous purple-flowered plants are crossed wi
jolli1 [7]
For this you would use a punnet square (ill try my best to show it while typing)
heterozygous means different, so with the purple flower youd get the gene shown as Pp and put it into the punnet square

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so you would have
25% Dominate Homozygous Purple
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25% Recessive Homozygous White
5 0
3 years ago
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