1. One positive use of viruses is their function as a. infectious particles. c. cloning vectors. b. pandemic initiators. d. marine predators.

Answers

Answer 1

Answer: The correct option is C.

Cloning vectors.

Explanation:

Viruses are use as cloning vectors because they can give the new gene or birth the new gene by infecting the cell. They are so modified and orogrammed in such a way that they cannot cause disease when it is used in humans. Cloning vector is a DNA fragment gotten from viruses or bacteria plasmid which is maintained and used for cloning purposes.


Related Questions

Music > color should be read as: a. music on color c. music to color b. music before color d. music then color Please select the best answer from the choices provided A B C D

Answers

Answer:

C

Explanation:

The answerrrr is C . (:

what are the cells that divide to produce gametes ?

Answers

Answer:

cells needed for sexual reproduction

Explanation:

so that during fertilization,the total number of chromosomes will be 46..

What are the cells that divide to produce gametes? germ cells

What is a gamete?

It is the reproductive cell of an organism. They are haploid in nature. 

How many types of gametes are there?

There is a male gamete that is termed sperm (animals) or pollen grain (plants) and a female gamete that is termed ovum (animals) or egg (plants).

What kind of division occurs prior to gamete formation?

Meiosis, or reductional division, occurs prior to gamete formation.

What is its significance?

It ensures that after fertilization, the normal diploid number is maintained.

What kinds of cells undergo this division to produce gametes?

Germ cells are the cells that produce gametes. 

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what is the role of the grana in chloroplast?

Answers

Answer:

Grana are the structures formed of coin like structures called thyllakoids that encloses chlorophyll for absorbtion of light essential for photosynthesis.And grana also give green colour to chloroplast.

Explanation:

Pseudoscience is more likely to be driven by ALL of the following factors EXCEPT?

A. commercial interests
B. evidence
C. culture
D. ideology

Answers

Explanation:

A because you need reservation question hypothesis experiment analyze and a conclusion

How do bile salts help in digestion? ​

Answers

They dissolve food in the stomach to easily pass through the intestines

Which of the following has the greatest effect
on soil's capacity to retain water?
A Soil color
B Soil particle size
C Soil texture
D Soil fragrance

Answers

The water-holding capacity of a soil is the  the amount of water that a given soil can hold for plants to utilize

The soil particle size has the greatest effect on soil's capacity to retain water.

Soil particle size and organic matter (the soil's composition) are main determinants of water-holding capacity of a soil. Smaller particles (silt and clay) have a bigger surface area than larger sand particles, allowing the soil to hold more water.

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One line with red flowers and the other line with violet flowers. You carry out a monohybrid cross and find that all of the F1 offspring have violet flowers, while 97 of 400 F2 offspring have red flowers.
Explain the inheritance of flower colour in this plant species.

Answers

Answer:

See the answer below

Explanation:

The inheritance of flower color in the plant species follows the simple dominance/recessive inheritance of Mendel. The red flower trait did not show up at all at F1 only for it to show up at F2. It simply means that the red flower trait is recessive while the violet flower color is dominant.

Assuming that the allele for violet flower color is designated as R while that of red flower color is designated as r.  The genotype of the violet flower would be true-breeding, RR, while that of red flower color would also be true-breeding rr:

                RR    x    rr

 F1         Rr    Rr    Rr    Rr  

phenotype ratio = all violet flower color

                 Rr    x    Rr

F2          RR    Rr    Rr    rr

phenotype ratio = 3/4 violet flower color and 1/4 red flower color

97 red flower offspring out of 400 is approximately 1/4.

Hence, the inheritance of flower color in the plant obeys a simple dominant/recessive Mendelian law with the violet color trait dominant over the red color trait.

Woodpeckers peck trees to find food and make nests. What would happen if
most of the trees are cut down?

Answers

Answer:

the wood packers wouldnt have a home to live in anymore. the effect of this means that the habitat for them and other animals is destroyed and they could start to die and become endangered species. this is my opinion

Explanation:

This is from what I have learned so far

What are the three processes that have allowed Sexual Reproductin to make unique
oranisms? (3 points)

Answers

Answer:

Many organisms can reproduce sexually as well as asexually. Aphids, slime molds, sea anemones, some species of starfish (by fragmentation), and many plants are examples.

Explanation:

Hope this helps!! ❤️

A biologist counts the number of zebras in a population each year, and notices an increase in the zebra population. Which describes the biologist’s actions?

Answers

Answer:

if I'm correct he is gathering information and is probably making a chart to graph the information about how much the zebra population is growing

Answer:

The correct answer is that he is observing.

Explanation:


Onion Cell mitosis

Answers

Answer:

onion cell have a lot of cell u such look it up how many cell do onion have

Answer:

ogres have layers.

Read the article and use it to answer the question that follows.

Sex Linked Inheritance

Why are women often carriers of X-linked traits but rarely affected by them?

Answers

Answer:

See the answer below

Explanation:

Women are often carriers of X-linked traits but are rarely affected by the trait because they have two X chromosomes and the two have to carry the X-linked allele in order for them to be phenotypically affected, especially if the trait is a recessive one.

Unlike men that are XY and only require one X-linked allele in order to be affected for X-linked recessive traits, women need two alleles - one on each chromosome - in order to be affected. One of the X chromosomes of a woman usually comes from the woman's father and the other one from her mother. In order to be affected, a woman must inherit an affected chromosome from her father and her mother respectively, thereby reducing the probability of having the trait.

The X chromosome of a man usually comes from his mother. Hence, a man only needs to inherit an affected chromosome from his carrier mother to be affected for the trait, thereby increasing the probability of having the trait when compared to a woman.

This is not the case for X-linked dominant traits where both men and women have an equal chance of being affected.

Women carry two XX chromosomes in their cells. They carry the X chromosome but rarely gets affected by the trait because to be phenotypically affected they should carry X linked disease trait on both the X chromosomes.

Especially in the case when the trait is recessive then they should have two XX chromosomes which are linked to traits.

In the male, they have one X and one Y chromosome so they acquire an X chromosome and gets affected by it.

In male presence of one X chromosome from the carrier mother is enough to pass the trait. While in females to have X linked recessive trait they should have two alleles.

The woman does not get affected as one chromosome comes from the father and the other from the mother so to be affected the woman must acquire genes with traits from both parents.

Therefore, women are often carriers but are rarely affected by them.

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When studying predator prey relationships, the predator population _____ the prey population.
A. Is not affected by
B. Lags behind
C. Fluctuates before
D. Does not affect

Answers

Answer:

I would say B

Explanation:

When it comes to predator and prey, the prey will always have a higher population than the predator.

6. Which of the following is NOT a characteristic of metallic substances?
A. Are malleable and ductile
B. Conduct electricity
C. Have low melting points
I
D. Are usually solids are room temperature

Answers

Answer: C. Have low melting points.

Explanation: Metals have high melting points, not low; therefore, C does not belong.

What is the probability of short beaks in the offspring of the cross show above

Answers

Answer:

8/16 or 1/2

Explanation:

This question is a dihybrid cross involving two genes, one coding for feather color and the other for beak length. The alleles for green feathers (G) and long beak (L) are dominant over the alleles for yellow feathers (g) and short beak (l).

According to this question, a male with genotype GGLl was crossed with a female with genotype Ggll. The following combination of gametes is produced by each parent:

GGLl - GL, Gl, GL, and Gl

Ggll - Gl, Gl, gl and gl

Using these gametes in a punnet square (see attached image), the following offsprings in the following proportions will be produced.

Green feathers, long beak (GGLl, GgLl) = 8/16 or 1/2

Green feathers, short beak (GGll, Ggll) = 8/16 or 1/2

Hence, the probability of short beaks (ll) in the offspring of the cross is 1/2.

How can we explain why there is so much biodiversity on Earth today? How did it come about?

Answers

Answer:

How can we explain why there is so much diversity of life on Earth today?

There are several key reasons for high biodiversity in tropical ecosystems. High NPP directly contributes to α-diversity by supporting more species with minimum viable populations, whereas enlarged populations of each organism increase overall mutation frequency and hence intraspecific genetic variation.

Explanation:

Brainliest please?

During the bacterial transformation lab, what was the primary purpose of including Ampicillin in the agar

Answers

Answer:

allows for selection of E. coli mutants that successfully picked up the plasmid

Explanation:

Ampicillin is a penicilin type medicine or antibiotic that can treat the infections caused by bacteria.

In bacterial transformation lab, the ampicillin is added in the agar in order to select the E.coli mutants which picked the plasmid and have gained ampicillin resistance gene. Bu doing so, it causes the production of the enzymes that prevents the activity of the ampicillin as well as the bacteria survive. The ampicillin antibiotics present in the agar kills the bacteria without having the ampicillin resistance gene.

Which of the following non-renewable sources of energy has the smallest amount of
Fuel left on Earth?

Answers

Answer:

just so I can see the question dont mind this

Answer:

You didn’t put any options if you say the options i will answer.

Explanation:

Which structures allow redwoods to grow so tall and still maintain
homeostasis?
A. Cones with scalelike seeds
B. Polyps with strong attachments
C. Flowers, fruits, and seeds
D. Vessels that carry water and nutrients

Answers

Answer:

d. vessels that carry water and nutrients

6)Why do the walls of the stomach secrete hydrochloric acid?
7)Which TWO parts of the alimentary canal make up the small intestine? ​

Answers

1.The enzyme pepsin.Pepsin breaks down proteins in the stomach

2 Im pretty sure its the duodenum and the ileum

hi everyone! I have a question for you to answer that is worth 10( I think) points for each person! ↓


in which aquatic ecosystem does fresh water meet salt water?


wetlands

intertidal zones

estuaries

neritic zones

(take your time)

Answers

Answer:Estuaries :)

It has to be 20 characters

Answer:

above me is right i got 100

Explanation:

Sand is a ______ because you can see and identify the individual particles throughout.

Answers

Answer:

Heterogeneous

Explanation:

Sand may appear homogeneous from a distance but it is heterogeneous.

Help please thank you so much

Answers

Answer: A!
Hope it helps :D

What is produced in the process of photosynthesis?
O nitrogen
O Light
O water
O glucose

Answers

Answer:

Explanation: Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar

So yes photosynthesis uses light and water in the process of forming sugar.

Which organism is NOT a consumer in this food web?
A.Rabbit
B.Grass
C. Fox
D.Bird

Answers

Answer: B.Grass

Explanation:

PLZ HELP WILL GIVE BRAINLIEST
Which of the following best describes how the types of cell reproduction relate to major groups of organisms?

Group of answer choices

Meiosis only occurs in organisms that reproduce sexually.

Meiosis only occurs in plants and fungi.

Mitosis occurs only in animals with backbones.

Mitosis occurs only in organisms that have cell walls.

Answers

i think it’s the first one

Denelle pulled gently on a spring scale. The scale showed a force, but the block did not move. Why not?

Answers

Explanation:

A large force is applied to an object with a small mass

Give you points add you as a friend's and give points and Bring list


Which plate boundary and movement commonly create volcanoes that can result in the development of habitable islands? Explain how islands can be created by plate tectonics. The answer is this but I need the CONVERGENT. Can you provide the definition of a convergent boundary?

Answers

Answer:

convergent boundaries are boundaries that come together

Explanation:

The periods are the rows of the modern periodic table.
True or false

Answers

True, they are horizontal rows on the periodic tabke

Answer:True

Explanation:

Which of the following
is not a type of lipid?

A. Fat

B. Steroids

C. Sugar

D. Waxes

Answers

Pretty sure the answer is Sugar, Correct me if I'm wrong

Sugar is not a lipid, but it is a carbohydrate. Thus, option C is correct.

What is lipid?

Lipid is type of biomolecule, consisting, fats, steroids, waxes, and fat soluble vitamins such as A, D, E, K and others. It is an organic molecule which is hydrophobic or amphiphilic molecule which is insoluble in the water.

Fatty acids are included in the class of carboxylic acids which has long hydrocarbon chain and terminal carboxyl group (COOH). As compare to other molecules found in food that are carbohydrates and proteins, lipids contain more than twice energy.

Lipids play significant role in cell signaling as lipid signaling, which is very vital part of it. It is also involved in immunity, hormones such testosterone, estrogen, cortisol. Fat soluble vitamins play an important role in nutrition.

Therefore, sugar is carbohydrate not lipid. Therefore, option C is correct.  

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