What processes are required of all life to exist. Even prokaryotes carry these out.

A Punnett square is used to determine the __________. A. Probable outcome of a genetic cross B. Different forms of a gene C. Res

castortr0y [4]

A Punnett square is used to determine the __________.

A) Probable outcome of a genetic cross

B) Different forms of a gene

C) Result of a gene mutation

D) Actual outcome of a genetic cross.

4 0

2 years ago

One of the grand challenges in biology is understanding how the first cells formed on Earth. Since all cells are bound by a cell

coldgirl [10]

<h2>Answer is option "A"</h2>

Explanation:

Oils and fats, which in science are called lipids, are known as amphipathic molecules. These molecules have two distinct ends to them: a water-loving (hydrophilic) side and a water-fearing (hydrophobic) side. While the hydrophilic sides of a lipid will associate with the water in a solution, the hydrophobic sides of the lipid all cluster together to 'hide' from the water. Lipids therefore cluster together and form spheres where the hydrophobic sides are in the center away from the water while the hydrophilic sides are on the outside, associating with the water.
The ability of the atoms within a group to form hydrogen bonds with the water molecules around them makes them hydrophilic. Oxygen and nitrogen atoms readily form hydrogen bonds with water molecules, so any organic molecules that have oxygen or nitrogen atoms bound to their carbon skeletons will be hydrophilic.
For example, if we take the molecule for cholesterol, we see the OH group on the left is hydrophilic and will form hydrogen bonds with water, while the ring structures, which only consist of hydrogen and carbon atoms, are hydrophobic and will not associate with the water.
There are many different kinds of lipids with different functions. Lets start by examining phospholipids, which compose the cell membranes of animals. They form lipid bilayers, with one set of hydrophilic heads facing the exterior of the cell membrane and the other set facing the interior (as you can see on the diagram on screen). The hydrophobic portions of the lipid bilayer - the lipid tails - face towards one another, which allows them to hide away from the water inside and outside of the cell.
So,the right answer is option A "amphipathic molecules".

5 0

3 years ago

How does light intensity affect the rate of photosynthesis?

Mazyrski [523]

If all other resources are in adequate supply, then the light intensity will increase the rate of photosynthesis. To balance it out, other things then usually start becoming short in supply, so things often don't change.

3 0

3 years ago

Andida albicans is part of our normal oral flora. Under certain conditions, it can overgrow, leading to oral thrush. Typically,

LekaFEV [45]

Answer:

Opportunistic, endogenous pathogen

Explanation:

Opportunistic infection is an infection that is caused by the microbes that are otherwise the component of one's own normal microbiota. Under particular conditions, the microbes become pathogenic and cause infection. The pathogen-derived from one's own microbiota is called endogenous pathogen.

According to the given information, <em>Candida albicans </em>is a part of the microflora of mouth but becomes pathogenic under certain conditions. In healthy individuals, they do not produce disease as their overgrowth is suppressed by other microbiota and other host resistance mechanisms. The infection occurs only in those individuals with predisposing factors such as weakened immune system or after consumption of antibacterial medications that disturb the normal microbiota and immune competency. This makes it an opportunistic, endogenous pathogen.

6 0

3 years ago

Breakdown of glucose to chemical energy for the cells to do work is an example of

uysha [10]

Catabolism/destructive metabolism. Both terms are used to describe the process of breaking down complex molecules for its stored energy.

7 0

3 years ago