Which of the following statements about DNA isolation from E. coli is not correct?a. chemical extraction using phenol removes proteins from the DNA
b. RNA is removed from the sample by RNase treatment
c. detergent is used to break apart plant cells to extract DNA
d. lysozyme digest peptidoglycan in the bacterial cell wall
e. centrifugation separates cellular components based on size

Answers

Answer 1
Answer:

Answer:

The correct answer is c. detergent is used to break apart plant cells to extract DNA.

Explanation:

Here we are talking about DNA isolation in E.coli and detergent is used to break apart the bacterial cell membrane by destabilizing the cell membrane. Detergent disintegrates the proteins present in the cell membrane which causes the rupture of membrane releasing the cell extract outside the cell.  

Detergent is not able to break plant cell because it is made up of cellulose and require blending or mashing. Detergent can only be used to disintegrate the cell membrane because only cell membranes contain lipids and proteins.

Hence, the correct answer is c.  detergent is used to break apart plant cells to extract DNA.


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In many polygynous songbird species, such as wrens or red winged blackbirds, a single male holds a territory and mates with several females on that territory. In monogamous species, such as cardinals and blue jays, mated pairs typically hold a territory and males mate with only one female. In comparably sized populations, do you expect drift to have a stronger effect in polygynous species or monogamous species? Explain your choice.
An individual’s mother has blond hair and blue eyes. That individual’s father has brown hair and brown eyes. The individual, however, has brown hair and blue eyes. How did that individual inherit a "mixture" of traits rather than either maternal (blonde hair and blue eyes) OR paternal (brown hair and brown eyes) traits?·maternal and paternal chromosomes sort independently·maternal chromosomes and paternal chromosomes remain together·one of the gametes was missing a chromosome

When THC binds to its receptor, how are the levels of cAMP affected in the post synaptic cells?

Answers

Cannabinoid receptors, located throughout the body, are part of the Endocannabinoid system which is involved in a variety of physiological processes including appetite, pain-sensation, mood, and memory.[1]

Cannabinoid receptors are of a class of cell membrane receptors under the G protein-coupled receptor superfamily. As is typical of G protein-coupled receptors, the cannabinoid receptors contain seven transmembrane spanning domains.[5] Cannabinoid receptors are activated by three major groups of ligands: endocannabinoids, produced by the mammillary body; plant cannabinoids (such as Cannabidiol, produced by the cannabis plant); and synthetic cannabinoids (such as HU-210). All of the endocannabinoids and plant cannabinoids are lipophilic, such as fat soluble compounds.

Sister chromatids present during mitosis are a. duplicated chromosomes.
b. identical copies.
c. separated during mitosis.
d. made during the S phase.
e. All of the above.

Answers

Answer:

The correct answer is e. All of the above.

Explanation:

Sister chromatids are made during the synthesis phase of the cell cycle. In the synthesis phase, the homologous chromosomes get replicated and sister chromatids are produced so they are produced by duplication of chromosomes.  

As sister chromatids are produced by replication, therefore, they are identical copies of parent chromosomes. These sister chromatids are joined to each other at centromere. They get separated during the anaphase of mitosis and moves to the opposite pole.

Therefore the right answer is e.

State two functions of blood plasma​

Answers

Answer:

"The main role of plasma is to take nutrients, hormones, and proteins to the parts of the body that need it. Cells also put their waste products into the plasma."

Stereoscopic vision, grasping hands and flat nails rather than claws seem to be good adaptations to living in trees. However, some scientists have hypothesized that these traits were more likely selected for catching small prey. Why?

Answers

Answer:

This is due to the general nature of the body's features.

Explanation:

The traits are important in the survival of the creatures. For example, a keen vision is needed to spot prey that is several meters or kilometers away. In addition, the claws serve different functions. For example, the claws are there to rest on the patch of the tree and hold firmly. In addition, the claws are for tearing prey. Further, the claws are for holding and lifting prey and suffocating it if necessary.

Describe the process of pollination and fertilization in flowering plants?
Please

Answers

Answer:

Pollination is the transfer of pollen from the male part of the flower, known as the anther, to the female part of the flower, known as the stigma. This can occur through a variety of methods, including wind, water, or through the action of animals. Once the pollen lands on the stigma, it begins to grow a tube down through the style of the flower towards the ovary.

Fertilization occurs when the pollen tube reaches the ovary and fertilizes the egg cell inside the ovule. The fertilized egg cell then develops into a seed, while the ovary develops into a fruit. The process of fertilization requires the transfer of genetic information from the male parent to the female parent, which occurs when the sperm cell from the pollen combines with the egg cell in the ovule.

After fertilization, the ovule develops into a seed, which contains the genetic material necessary for the growth and development of a new plant. The fruit, which develops from the ovary, provides protection for the seeds and helps to disperse them away from the parent plant. This process of pollination and fertilization is essential for the reproduction of flowering plants, and allows for genetic diversity and evolution within plant populations.

The movement of tectonic plates in two locations is described below:Location A: Tectonic plates move away from each other
Location B: Tectonic plates collide and one plate moves beneath the other

Which statement is most likely correct?

Magma may rise and form volcanoes in both locations.
There is no chance of earthquakes in the two locations.
Subduction happens in Location A but not in Location B.
Seafloor spreading happens in Location B but not in Location A.

Answers

Answer:

For Which statement is most likely correct? is Magma may rise and form volcanoes in both locations.

I hope it helps you....

Answer: magma may rise and form in both locations

Explanation: