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Goshia [24]
4 years ago
14

What does a round cross-section of a long bone suggest?

Biology
1 answer:
Alex73 [517]4 years ago
3 0
It suggests that the bone will have equal strength in all directions.
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What type of cells did Theodore Schwann study?
murzikaleks [220]

Answer:

peripheral nerve cells

Explanation:

in doing so he discovered a new type of cell surrounding the axons and neurons of nerve fibers – the cells he discovered are now called Schwann cells.

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4 years ago
Question 2 of 25
Kitty [74]

Answer:

The structure labeled X in the diagram is a membrane protein.

Explanation:

Membrane proteins are integral parts of the cell membrane that enable the transfer of ions like sodium, potassium and chlorine and small molecules like glucose through the lipid bilayer. They differ from other types of cell proteins by their structure. As you can see on the diagram, hey form channels that enable specific ions or molecules to pass to the other side of the membrane.

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2 years ago
What are the levels of organization in ecosystems from most basic to most complex?.
lys-0071 [83]

Answer:

The biological levels of organization of living things arranged from the simplest to most complex are: Organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere

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2 years ago
mitochondria or submitochondrial particles can carry out the following coupled reaction: 2 cyt c (red) 1/2 o2 adp pi -> 2 cyt
shutvik [7]

Answer: Complex IV, also known as cytochrome c oxidase, oxidizes cytochrome c and transfers the electrons to oxygen, the final electron carrier in aerobic cellular respiration. The cytochrome proteins a and a3, in addition to heme and copper groups in complex IV transfer the donated electrons to the bound dioxygen species, converting it into molecules of water. The free energy from the electron transfer causes 4 protons to move into the intermembrane space contributing to the proton gradient. Oxygen reduces via the following reaction:

2 cytochrome c(red) + ½O2 + 4 H+(matrix) -> 2 cytochrome c(ox) + 1 H2O + 2 H+(intermembrane)

Explanation:

In the electron transport chain (ETC), the electrons go through a chain of proteins that increases its reduction potential and causes a release in energy. Most of this energy is dissipated as heat or utilized to pump hydrogen ions (H+) from the mitochondrial matrix to the intermembrane space and create a proton gradient. This gradient increases the acidity in the intermembrane space and creates an electrical difference with a positive charge outside and a negative charge inside. The ETC proteins in a general order are complex I, complex II, coenzyme Q, complex III, cytochrome C, and complex IV.

7 0
2 years ago
As precipitation infiltrates into the subsurface soil, it generally forms an unsaturated zone and a saturated zone. In the unsat
Yakvenalex [24]

Answer:

d

Explanation:

4 0
3 years ago
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