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Lera25 [3.4K]
3 years ago
9

The plasma membrane is mostly made of molecules that have hydrophilic heads and hydrophobic tails. these molecules are called __

_______.
Biology
1 answer:
Sladkaya [172]3 years ago
7 0
Lipid Bilayer.A plasma membrane is made up of Lipid Bilayers, which consists of polar phosphate heads, which are hydrophilic or water loving, and non-polar fatty acid tails, which are hydrophobic. Proteins are embedded in the membrane as well.Cell membranes are known to have holes, or selective permeable.
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Please help i'm stuck on this and it's due soon, questions are in the images, will give brainliest!
UkoKoshka [18]

From the photographs presented, investigation reveals that the gender and age of the victim are:

  • Age: Elderly, at least 40 years old;
  • Gender; Female. This is clear from the hip and the shoe type discovered as the scene.

<h3>What is the preliminary hypothesis on the cause and manner of death?</h3>

The hypothesis or cause of death is a gun shot to the head. This is evidenced by the exhibit 23 - a bullet shell and the hole in the skull of the victim.

The databases that can help with these kind of investigations are:

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3 0
1 year ago
The primary function of kinases in signal transduction is to
mylen [45]

Answer:

a kinase is an enzyme that catalyzes the transfer of phosphate groups from high-energy, phosphate-donating molecules to specific substrates.

The body's use of signal transduction is to ultimately result in a cellular function.

3 0
3 years ago
A species has homologus chromosomes. what does this say about the species?
34kurt
It has pairs of matching chromosomes

I hope this helps!
4 0
3 years ago
Indicate whether each of the following occurs mainly in G1 phase (G), S phase (S), or G2 phase (H) of the cell cycle. Your answe
Ronch [10]

Answer:

Correct choice should be:

"SGSG"

Explanation:

The cell cycle consists of G1, S, G2 and M phase. The former three phases include the interphase and M phase is the dividing phase of cell . G1 prepares cell for DNA synthesis. S phase is the phase where DNA replication takes place. G2 phase prepares cell for cell division or M phase.

G1 phase preceeds replication or S phase and G1 phase licences DNA replication.

During other phases of cell cycle, ORC complex masks origin of replication. ORC phosphorylation takes place at S phase, which removes this omplex and unmasks origin of repication site so that replication machinery can bind to it.

DNA helicase activation: S phase

DNA helicase deposition on DNA at the replication origins: G phase (actually G1)

ORC phosphorylation: S phase

Licensing of replication origins : G phase (actually G1)

Hence correct choice should be:

SGSG

5 0
3 years ago
Evolutionary change in observable time scales.
Ierofanga [76]
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2 years ago
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