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mr_godi [17]
1 year ago
13

The presence of ________ dramatically increases the speed at which an action potential moves along an axon.

Biology
1 answer:
wlad13 [49]1 year ago
8 0

Answer:

Myelin

Explanation:

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Which of the following statements about a typical plasma membrane is correct?a. Phospholipids are the primary component that det
nordsb [41]

Answer:

B

Explanation:

The fatty acid tails of phospholipids are hydrophobic – meaning they are ‘water-hating’. This is why they are in the middle of the bi-lipid layer of the cell membrane 'hiding' from the 'watery' environment of a cell. This poses a challenge in the diffusion of large and charged molecules across the membrane -such as sodium ions. Such molecules need transmembrane protein channels to help them cross the membrane. These are called integral proteins because they are part and parcel of the cell membrane. The cell membrane, in addition, also has glycolipids and glycoproteins on its surface that are significant in the identification of the cell by other cells.

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3 years ago
Which part of cell theory is the diagram to the right
navik [9.2K]
This is mitosis: the cell does steps before it splits in two
G1 - synthesis - G2 - M(mitosis) in mitosis is PMAT
Prophase
Metaphase
Anaphase
Telophase
Then the last step is cell division or what its called is cytokinesis
5 0
3 years ago
Which organisms appeared on earth first
STatiana [176]

The organisms which appeared on earth first was bacteria.

<u>Explanation:</u>

  • The first-ever living organism on Earth was a bacteria known as cyanobacteria. It is believed by scientists that it first formed around 3 billion years ago.
  • When the Earth was first formed, it was inhospitable for a long time until 3.8 billion years ago approximately, the core cooled down and the level of oxygen had risen. This, along with photosynthesis resulted in the formation of Cyanobacteria.
  • These organisms were capable of carrying out the process of photosynthesis by which they prepared their food. These were known as common ancestors. All the living organisms thereafter are known to be their descendants.
6 0
3 years ago
Read 2 more answers
You want to determine if the source of fecal contamination is from dairy cows or wild deer. Which antibiotic would give you the
victus00 [196]

Answer:

Piperacillin and tazobactam, imipenem and cilastatin, or meropenem may be used.

Explanation:

Antibiotics such as piperacillin and tazobactam, imipenem and cilastatin, or meropenem can be used for the treatment of Fecal coliform bacteria that causes fecal contamination. There are some other methods also used to avoid Fecal contamination i.e. boiling of water, treating water with chlorine, or UV disinfection are the methods that are used to reduce Fecal coliform bacterial infection.

6 0
3 years ago
"Meghan was driving home when she heard a tire explode on the car right next to her. As a result, her heart started pounding and
Aliun [14]

Answer:

Sympathetic nervous system

Explanation:

The sympathetic nervous system of the autonomic division prepares the body for stress or emergency conditions by generating the “fight-or-flight” responses. The sympathetic nervous system triggers the release of stress hormones from the adrenal medulla to generate the set of physiological responses.

There is dilation of the pupil, and an increased rate of heartbeat and increased blood pressure. Other responses include dilation of airways and dilation of blood vessels that supply blood to skeletal muscles, heart muscles, liver, etc. Under the given emergency condition, the sympathetic nervous system of Meghan was activated to generate the fight or flight response.

8 0
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