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lbvjy [14]
2 years ago
6

When using a light microscope to view a cell she obtained from scraping under her fingernails, Ms. () notices that the cell lack

s a nucleus; therefore, Ms concludes that the cell must be a type of ______ cell. *
1 point
a. Animal
b. Prokaryotic
c. Eukaryotic
d. Plant
Biology
1 answer:
vladimir2022 [97]2 years ago
3 0

Answer:

The correct option is B. Prokaryotic

Explanation:

A prokaryotic cell can be defined as a cell which is unicellular and does not have any membrane-bound organelles present in it. Scientists claim that the earliest form of life was in the form of prokaryotic cells. The bacteria and archaea bacteria come under the category of prokaryotes.

The prokaryotic cell lack a nucleus. It's DNA material is present in a region called the nucleoid inside the cytoplasm of the cell.

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Describe your DNA model. Which part do the straws represent? The pushpins? The paper clips and the black dots you made with the
Fynjy0 [20]
<h2>Answer 1 with Explanation</h2>

The DNA model represents the genetic code that defines all the characteristics of a living thing and it is made up molecules called nucleotides. Each nucleotide contains and represents a phosphate group, a nitrogen base, and a sugar group. Two long strands are formed by Nucleotides attached together to create a structure called double helix which looks like a ladder, the sides would be made up of sugar and phosphate molecules while the rungs would be the base. The straws represent the sugar-phosphate backbone which forms the structural framework of nucleic acids. It is composed of alternating sugar and phosphate groups.  

<h2>Answer 2 with Explanation</h2>

The push pins re-presence nitrogen-containing base is an essential molecule with a nitrogen atom having the chemical features of a field. The principal biological purpose of a nitrogenous base is to bond nucleic acids collectively. A pushpin owes its essential characteristics to a solitary couple of electrons of a nitrogen atom. It is assigned as the derivatives pair of parent compounds.

<h2>Answer 3 with Explanation</h2>

The paper clips represent ‘five prime’ and ‘three prime’ which indicate the number of carbons in the DNA’s sugar backbone. These two are the distinctive ends of the nucleic acids. The black dots represent the bonds of sugar and phosphate which make up the nucleotides and show the genetic code. These bonds have strong covalent bonds that keep the bonds attached together firmly.

8 0
1 year ago
Which characteristic slows down nutrient cycling in Boreal Forests? choose one
Drupady [299]
D. Cold temperatures
3 0
2 years ago
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Which of the following could be considered both a renewable resource and a nonrenewable resource?iron oresea watersolar energywh
Monica [59]

Answer:

wheat crop

Explanation:

Resources can be either renewable or non renewable.

Renewable resource can be defined as the resources which have long availability or faster replenishment as compared to the consumption rate of the resource or both.

Examples include air, soil, plants, animals and others.  

Alternatively, non renewable resource refers to the resources which are available for a limited amount of time or whose replenishment is slower as compared to its consumption rate or both.

Examples include coal, oil.

Wheat crop is both a renewable and a non renewable resource.

Wheat crop can be grown again and again. Also, wheat crop is renewable as long as the soil is available for its growth. Appropriate soil provides ideal platform for growth of wheat plants.

Hence, it is a renewable resource as long as it can be grown again and as long as the soil is available. Also, ideal conditions which favour wheat crops need to be available.

Wheat crop is available for a limited period of time after which it can become useless. Also, wheat crops can be destroyed before they can be consumed. Limited availability can be due to shorter usefulness of the crops after which they become non usable. Other reason for low availability is that the crops can be damaged before they can be harvested for use.

Thus, it is also a non renewable resource.

Sea water is a renewable resource since it is available for infinite period of time.

Solar energy is a renewable resource since it is available for infinite period of time.

Iron ore is a non renewable resource since it is not available for infinite period of time. This will perish when it is consumed completely and its replenishment takes a long period of time. Hence, it will be unavailable as long as it is not replenished.

3 0
1 year ago
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Exotic pets, such as lizards and tarantulas, have increased in popularity. These animals are caught in the wild and sold as pets
vivado [14]

If hunted and sold, animals will have a lower chance of reproducing apart from not being there themselves, decreasing their population.



Having less species inhabiting an area, means less food for some predators. Which means that competition will occur among preators since food will be scarce.

Answer:


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Hope it helped,


Happy homework/ study/ exam!

5 0
1 year ago
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Bacteria with the ability to break down certain types of plastic are placed with a colony of E. coli bacteria that lack this abi
zloy xaker [14]

The answer is C

Plasmids are conferred through horizontal gene transfer in bacteria.  The ‘male’ bacteria develops a structure called pili that then attaches to the ‘female’ bacteria. It then transfers it’s replicated plasmid to the ‘female’ bacteria in a process called conjugation. This bacteria will hence have desirable traits that are coded for by the transferred genetic material ,such as antibiotic resistance, after a process called recombination.

6 0
1 year ago
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