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Sindrei [870]
3 years ago
13

Which of the following statements is true?

Biology
1 answer:
brilliants [131]3 years ago
8 0

Answer:

The correct answer is: C) Membrane lipids diffuse within the plane of the membrane.

Explanation:

Membranes are mostly made from phospholipids that, in aqueous environments, are arranged forming two layers (the hydrophilic heads are in contact to both the intercellular and extracellular spaces, and the hydrophobic tails make contact to one another in amidst the layers). These lipids that make up the bilayer diffuse laterally within the plane of the membrane and thus constitute the <em>fluid mosaic model</em> of cell membranes.

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If they gave IVs of pure water in the emergency room to people who are dehydrated, what would happen?
Zigmanuir [339]

Answer:

The correct answer is: <em>B. blood cells would be in a hypotonic solution, so water would rush into the cell causing it to expand and eventually burst</em>.

Explanation:

Cells have a certain solute concentration that produces an osmotic pressure of aproximately 300 mOsm. For that reason, IVs solutions must have a solute concentration which equals the cell osmotic pressure. That is usually acomplished by using an aqueous solution of NaCl 0.9% w/v or 5% w/v Glucose.

If an IV of pure water is administrated to a person, the blood cells will be in a hypotonic solution. That is, with a concentration lesser than the concentration inside the cells. Due to the difference in concentration, a net flow of water will be produced from the exterior to the cell interior. As the volume of the cell is increased, the cell membrane is damaged and eventually the cell will collapse.

8 0
3 years ago
In a sectional view of the inner ear, which structure lies between a pair of perilymphatic chambers, which are interconnected at
zhenek [66]

Answer:

Cochlear duct.

Explanation:

The mammalian ear is divided into three parts- outer ear, middle ear and inner ear. Ear is an important organ of the body responsible for maintaining the body's equilibrium.

The cochlear duct is well known as scala media. The cochlear duct is present between the perilymphatic chambers. This duct is interconnected at tip of the cochlear spiral.

Thus, the answer is cochlear duct.

6 0
3 years ago
C) Sobre la base de la lectura "Los gases contaminantes", indaga en otras fuentes sobre la huella de carbono, escribe un pequeño
trapecia [35]

Answer:

Los gases que tienen huellas de carbono son dióxido de carbono, monóxido de carbono y gases de metano, etc.

Explicación:

Los gases contaminados que contienen huellas de carbono son dióxido de carbono, monóxido de carbono y metano, etc. Estos gases tienen un efecto negativo sobre el medio ambiente porque son responsables del calentamiento global de la atmósfera y disminuyen la calidad del aire que produce muchas enfermedades nocivas. Las principales causas de la emisión de gases contaminados son las actividades humanas como la quema de combustibles fósiles y el humo que producen las industrias, etc.

3 0
3 years ago
Which part of DNA is the actual genetic code? *
emmasim [6.3K]
Adenine, Guanine, Cytosine, Thymine?
5 0
3 years ago
Read 2 more answers
The cell junction that allows communication between cells, and provides a channel for small molecules up to 1000 daltons is a __
geniusboy [140]
It would be a GAP JUNCTION.
4 0
3 years ago
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