BIOLOGY HIGH SCHOOL

Which observation proves that a cell is a eukaryote?. A)It contains DNA. B)It has DNA inside a nucleus.. C)It has a cell membrane.. D)it contains ribosomes.

Answers

Answer 1
Answer: Which observation proves that a cell is a eukaryote?

Answer: Out of all the options that are shown above the one that is an observation that is used to prove that a cell is a eukaryote is answer choice B) It has DNA inside a nucleus. Also Eukaryote cells have a nucleus and membrane-bound organelles.

I hope it helps, Regards.
Answer 2
Answer:

Answer: B) It has DNA inside a nucleus.

An eukaryotic cell is the cell which exhibit membrane bound organelles. They exhibit a well defined membrane bound nucleus in which the DNA (deoxyribo nucleic acid) resides it is the genetic material which is passed on from parents to their offsprings. This property of the eukaryotic cell makes it distinct from prokaryotic cell as the prokaryotic cell lack a nucleus.

Related Questions

When adult amphibian skin harbors populations of the bacterium, Janthinobacterium lividum (Jl), chytrid infection seems to be inhibited. Which of the following represents the best experimental design to test whether this inhibition is real?A) Inoculate uninfected amphibians with Jl, and determine whether the amphibians continue to remain uninfected by chytrids.B) Inoculate infected amphibians with Jl, and determine whether the amphibians recover from infection by chytrids.C) Take infected amphibians and assign them to two populations. Leave one population alone; inoculate the other with Jl. Measure the rate at which infection proceeds in both populations.D) Take infected amphibians and assign them to two populations. Inoculate one population with a high dose of Jl; inoculate the other with a low dose of Jl. Measure the survival frequency in both populations.
Which statement best distinguishes glycolysis and the Krebs cycle from the electron transport chain
What part of the nervous system is essential for it to work properly?
The human body does not constantly lose water through _______.
When water is cooled, it becomes more dense and sinks to the bottom of the water column. The displaced water is them replaced with ___________.more cold water from the North and south polewarm water moving in from the equatorwater that is roughly the same temperature as the displaced waterwater from volcanic vents

Why do classification systems change over time?

Answers

Classification systems are only as good as the criteria used to create them. Over time, those criteria that are considered "obsolete" will be trashed and new criteria developed. In this way, systems stay both relevant but able to reach across generations.

Answer:

Scientists find new evidence of species. (A)

Explanation:

Thank me later B)

An ecosystem with wet soil, willow trees, and orchids is likely a. a marsh.
c. a forest.
b. a swamp.
d. a pond.

Answers

a swamp wuld be the correct answer to your question

A biologist gathered data to show the interaction of golden-cheeked warbler and juniper tree populations.

Answers

A biologist is a scientist that studies in the field of life. Hence, as a scientist he follows the scientific protocol. Also known as the scientific method which invovles observation, prediction, testing, interpretation and conclusion. Hence they use this to unearth the unknowns as what the variables displayed. 

Which of the following groups of organs all remove metabolic wastes from the human body?

Answers

That would depend on the following.

But in general the Extretory aka the Urinary system gets rid of the waste.
group of organs are systems so it is excretory and urinary
excretory organs  are lungs, kidney, liver, skin

Which of the following is true of RNA compared to DNA?a. It lacks phosphate groups.
b. It is a single-stranded molecule.
c. Its nucleotides do not have sugars.
d. It contains four different nucleotides.

Answers

The correct answer is B. It is a single-stranded molecule. It does not lack phosphate group but rather has a different one so there's also 4 but they're a bit different. Unlike the DNA that is a double spiraling strand, the RNA is just a single strand that goes on and on. Although similar, it does completely different things from the DNA.

Final answer:

RNA is a single-stranded molecule, in contrast to the double-stranded structure of DNA.

Explanation:

b. It is a single-stranded molecule.

RNA is a nucleic acid that is similar to DNA, but with a few key differences. One of these differences is that RNA is single-stranded, while DNA is double-stranded. This means that RNA is made up of only one chain of nucleotides, while DNA has two chains that are complementary to each other.

Other differences between RNA and DNA include:



  1. RNA contains the sugar ribose, while DNA contains the sugar deoxyribose.
  2. RNA uses the nitrogenous base uracil, while DNA uses thymine.
  3. RNA is typically shorter than DNA.

Learn more about RNA vs DNA here:

brainly.com/question/33301756

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Describe two examples of how an understanding of genetics is making new fields of health care(treatment or diagnosis)possible?

Answers

Answer:

Genetics is a branch of science that deals with the study of genes, their sequence, function, variation, and heredity.

Increasing understanding of genetics help in making new fields of health care, for example,  

  • Gene therapy helps in treating various genetic diseases such as cystic fibrosis et cetera.
  • Molecular genetics help in the development of more precise methods for diagnosis such as ELISA.
  • Pedigree analysis and karyotypes help in early detection of possible hereditary diseases.
  • DNA fingerprinting helps in detecting criminal suspects, paternity test, identification of dead organism et cetera.
Genome sequencing allows specialized cancer treatments, and research regarding genetic markers can help to predict an individual's likelihood of having diseases such as heart disease or diabetes.
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