Answer:
They were not around at that time or either from it being so hot they just disappeared/melted.
Explanation:
Carrier and channel proteins in the plasma membrane
are similar because they are both transport membrane proteins that allow
molecules to flow in and out of the membrane. Meanwhile, carrier protein can
further be classify as active or passive transport. These two transport
proteins makes cell’s ability to perform their functions well by maintaining a
difference between the intracellular and extracellular environment.
Answer:
The oxygen dissociation curve represents the percentage saturation of Hb with oxygen at different partial pressure of oxygen. The different partial pressures gives sigmoid shapes to the curve. When this curves shifts to right, it indicates low affinity or binding of oxygen by the Hb. it also indicates the unloading or releases of Oxygen by Hb molecules at condition of low pressure. e,g in the muscles during strenuous exercise.However, when the curve shifts to the left, this indicate high affinity for oxygen, great binding, at high partial pressure of oxygen.e,g in the lungs to take oxygen and releases CO2.
Therefore in this scenario, the statement -. <u>During strenuous exercise, the oxygen-hemoglobin dissociation curve shifts to the right.</u> is correct. because oxygen is needed by the muscles therefore ,oxygen should be less binded by Hb, decrease affinity and easily unloaded to muscles.
<u>The statement </u>This rightward shift reflects an increase in the affinity of hemoglobin for oxygen and favors loading of O2 into hemoglobin in the lungs is wrong.
As explained above the rightwards shift indicated low affinity of Hb for oxygen(unloading)and favours unloading at the muscles because during strenuous exercise the partial pressure of oxygen is very low(but that of CO2 high) in the muscles which favours low oxygen molecules binding by Hb, and easy release to respiring cells.
Explanation:
The question is in another language so, English translation for the given question is as follows:
It is made up mostly of water; different organic molecules, such as carbohydrates; and inorganic molecules, such as mineral salts. It carries out most of the chemical reactions of the synthesis of molecules and obtaining energy. To which of the following cell structures does the above description correspond?
a) Nucleus. b) Genetic material. c) Cytoplasm. d) Cell membrane.
Answer:
c) Cytoplasm
Explanation:
The Cytoplasm is defined as a thick solution filled inside each cell and all the organelles float in the cytoplasm.
The Cytoplasm is majorly made up of water, carbohydrates, salts, and proteins. Cytoplasm contains different molecules and enzymes that carries out most of the chemical reactions and obtain energy. Cytoplasm also helps in providing shape to the cell.
Hence, the correct option is c) Cytoplasm.
It’s a false because there is different types of family structures like nuclear family structure family structure so it’s a false.
Hope this helps