I believe your answer would be Echinoderms and Chordates. I hope this helps!
Answer:
b. a semi-permeable double layer of phospholipids that have hydrophilic heads and hydrophobic tails
Explanation:
B is correct as the cell membrane is selectively semi-permeable. It is selectively semi-permeable because this quality allows it to control what can and can't enter the cell, and how it does so.
The cell membrane also has a phospholipid bi-layer comprised of a double layer of phospholipids which have hydrophilic head and hydrophobic tails. This is because the heads are made of phosphate and are polar and are therefore attracted to water (hydrophilic), while the tails are made of lipids (i.e. fats, oils) which do not mix with water and are therefore hydrophobic.
The properties of each phospholipid is also why they form the double layer structure, the hydrophilic heads naturally face outwards into the water and protect the hydrophobic tails on the inside.
Hope this helped!
A eukaryotic chromosome consists of histones.
<h3>
Properties of eukaryotic chromosome</h3>
Eukaryotes posses pairs of linear of chromosomes and they are all contained in the nucleus of the cell, possessing characteristic forms.
Eukaryotic chromosomes consists of histones which are condensed and DNA surrounding nuclear proteins.
Therefore, a eukaryotic chromosome consists of histones.
Learn more about eukaryotic chromsomes here:
brainly.com/question/19661895
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The LEFT VENTRICLE of the heart supplies oxygenated blood to the aorta.
Aorta is the main artery that supplies oxygenated blood from the heart to other organs and tissues (except lungs, lungs are for gas exchange instead) so that they get enough oxygen and nutrients.
Meanwhile, the heart has 4 chambers, left and right atrium, and left and right ventricles. Atrium are for receiving blood from different vessels, and ventricles are for pumping blood out of the heart.
Since only the left ventricle is connected to the aorta, so, the answer should be left ventricle.
Reference picture by amac training.