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.
A species is a group of individual organisms that interbreed and produce fertile, viable offspring. According to this definition, one species is distinguished from another when, in nature, it is not possible for matings between individuals from each species to produce fertile offspring.
plates lead and lead oxide, electrolyte liquid sulphuric acid
Answer:
a) Dehydration
b) water (H2O)
Explanation:
Polymers are large complex substances that arise from the joining of smaller simpler units called Monomers. A monomer is joined together by a covalent bond, to form a polymer molecule. However, this process usually accompanies the loss of a water molecule due to the hydrogen (H+) and hydroxyll (OH-) ions that is contributed by each monomer unit. Hence, this process is called a DEHYDRATION REACTION.
For example, glucose moleculea as monomer units combine together in a dehydration reaction to form larger polymers such as starch, glucose etc.
Answer:
The yellow form can exist in both the "live yellow" and "heat-killed purple" forms.
Explanation:
To carry out these transformation tests; for example change of purple structure form into the yellow structure; DNA, RNA, and proteins will be confined from the yellow structure and infused to heat-killed purple structure each in turn in singular examinations. At the point when DNA will be changed into heat-killed purple structure form, it is changed over and converted to the yellow structure form. In this way, the yellow structure form can be acquired from live yellow just as heat-killed purple structure (changed with DNA or changing guideline from the yellow structure).
