Answer:
<em><u>H1: false, the observations of the molecules do not support the hypothesis...</u></em>
Explanation:
The cell membrane is comprised of a phospholipid bilayer, proteins, and cholesterol. These components help the membrane to maintain its selective permeability and concentration of solutes and water.
The lipid molecules have polar hydrophilic heads and hydrophobic tails. These only readily allow for the movement of small non polar molecules. Other substances, like charged ions and large molecules require transport proteins to move in and out of the cell. Hypothesis: H+ is small and should be able to move freely through the membrane, While glucose is large and cannot move freely
- Observing H+, despite being very small these cannot easily pass through the membrane. They require transport proteins called channels for their free movement or passive movement across the membrane.
- For glucose, these molecules pass through specialized channels in facilitated diffusion. They move down their concentration gradient into the cell. To move out of the cell against its concentration gradient glucose requires ATP for active transport.
- Cortisol, is a large steroid hormone, taken into the cell by simple diffusion across the lipid membrane, down its concentration gradient.
<span>mitochondrion is ur answer have a nice day
</span>
Myocardium
<span>The heart has
four chambers, four valves. It is composed of cardiac muscles which all
in all pumps blood throughout the human body through the blood vessels.
When something gets injured around the heart, well it will
automatically, in high possibility stop functioning. Take not of the
valves and the most important is the sinoatrial node which is the pace
maker of the heart. It is what triggers the heart to pump itself and the
valves then function and the blood travels and then gets cleansed out
of carbon dioxide in the alveoli.<span> </span></span>
Answer:
2 molecules of ATP
Explanation:
Glycolysis is the anaerobic process (no oxygen required) used in the breakdown of glucose to extract energy. It occurs in the cytoplasm of both prokaryotic and eukaryotic cells. It is the first step of cellular respiration.
Glycolysis is subdivided into two phases: the first phase uses energy (ATP), while the second phase produces it together with pyruvate and NADH.
Two molecules of ATP are required for the first stage of glycolysis, while 4 ATP molecules and 2 NADH molecules are formed in the second stage.
