BIOLOGY HIGH SCHOOL

Why are plasmids so widely used in recombinant DNA studies?A. because they naturally contain much foreign DNA
B. because they can be used to transform bacteria
C. because it is difficult to insert new genes into them
D. because they cannot be cut with restriction enzymes

Answers

Answer 1
Answer:

Answer:

Option (B).

Explanation:

Plamids are the extra chromsomal circular DNA present in the bacterias. Plasmid DNA can undergo replication independently to the chromsomal DNA.

Plamids can be used to transform bacteria and used in the molecular techniques. The foreign gene can easily be inserted into the plasmid DNA and used in the formation of recombinant protein.

Thus, the correct answer is option (B).
Answer 2
Answer: I would guess is B
A: the bacteria contains its DNA
B; when a new gene is added it can transform the bacteria by altering its biochemistry
C:its easy to insert new genes into a plasmid
D: the plasmid is cut with special enzymes

hope that helps 

Related Questions

Which of the following processes releases energy to be used by a cell?A. a phosphate group is added to atp to form adp. B. a phosphate group is added to adp to fprm atp c. a phosphate group is removed from adp to form atp D. a phosphate group is removed from atp to form adp
Why wont Neon bond with anything else on the periodic table of elements?
Which statement is true of a placenta?a. The placenta passes oxygen, nutrients, and other useful substances from the fetus to the mother. b. The placenta passes oxygen, nutrients, and other useful substances from the mother to the fetus. c. The placenta mixes blood from the mother and fetus together. d. The placenta protects the mother from being attacked by the fetal immune system.
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What describes a result of the greenhouse effect?

Describe how viruses and prions can alter cell functions

Answers

Since viruses are nonliving, they will need a host in order to take over and spread. Thus, viruses need help in order to reproduce. However on the other hand, Prions are also NON-living but they do not reproduce, they are protein that are not folded properly and continue to create those badly folded proteins to alter the cell.

What is the composition of the most common mineral compounds that make up Earth's crust and mantle? sulfates, oxygen, and one or more nonmetal elements carbonates, hydrogen, and one or more organic compounds silicon, oxygen, and one or more metal elements oxalates, oxygen, and one or more organic compounds

Answers

Answer:

silicon, oxygen, and one or more metal elements

Explanation:

The answer is Silicon, Oxygen, and one or more metal elements!! I took the test and got this answer right!

The different forms of a gene are called __________a. alleles.
b. factors.
c. masks.
d. traits.

Answers

Alleles

Each human body is composed of genes, and these usually come in pairs that are slightly different from each other. The different versions of genes are called alleles. Alleles are responsible for determining physical or notable characteristics and traits a specific person has. 

Final answer:

The different forms of a gene are called alleles. These are different versions of the same gene that are located at the same position on a chromosome. Terms like factors, masks, and traits are not used to describe this concept in biology.

Explanation:

The different forms of a gene are called alleles. In biology, alleles refer to the different versions of the same gene, which are located at the same position, or genetic locus, on a chromosome. For example, in humans, the gene for eye color has an allele for blue eyes and another for brown. Factors, masks, and traits are not accurate terms for this concept. Factors typically refer to different elements or components that contribute to a particular outcome. Masks might be used in the context of genetics to refer to the concealment of a trait by the presence of another trait. Lastly, traits are the characteristics or features that are expressed by an organism, as a result of its genetic makeup.

Learn more about Genetics here:

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6. The _______ is the temperature to which air must be cooled at constant pressure to reach saturation. A. latent heat
B. dew point
C. saturation heat
D. adiabatic lapse

Answers

Dew point is the temperature to which air must be cooled be cooled at constant pressure to reach saturation.

The _______ is the temperature to which air must be cooled at constant pressure to reach saturation. The answer is, B. Dew point.

Where has the population reached the carrying capacity in the Graph shown above? (need help quick!)A. point C
B. point B
C. point A
D. point D

Answers

Answer:

The correct answer is option D. point D.

Explanation:

Carrying capacity is characterized as the maximum populace size that a domain can continue inconclusively.  For most species, there are four factors that factor into figuring the carrying capacity of an individual population: food accessibility, water resources, habitat, and ecological conditions.

In a graph representation of population size in a time period increases until it reaches carrying capacity, carrying capacity is representing in the graph where the increase in curve becomes stable and makes a plateau.

Thus, the correct answer is option D. point D.

Answer:

D point D

Explanation:

Toby is camping in a broad, U-shaped valley. The area was most likely created by _____.

Answers

The answer is glacial erosion.

U-shaped valleys, as named, have a characteristic U shape. Their evolution usually start as a river valley. Thus, they have V shape before erosion occurs. When glacier start its travel down a slope, it erodes and deepens that V-shaped valley. Over the time, valley get the U shape and becomes U-shaped valley, also called glacial troughs.
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