Which is observation proves that a cell is a eukaryote?
A.it has DNA in the cell
B.it has ribosomes inside the cell
C.it has enclosed organelles inside the cell
D.it is surrounded by a cell membrane

Answers

Answer 1

Answer:

The answer is C

Explanation:

Only eukaryotic cells have membrane-bound organelles, so that would be proof that the cell is a eukaryote.


Related Questions

A classmate suggests a new hypothesis for researchers to test: Taller salt marsh grasses are
prettier than shorter marsh grasses. Explain why this hypothesis is not scientific.

Answers

Answer:

Because it's an opinion and cannot be tested.

Explanation:

Its not scientific because its an opinion and can’t be objectively proven

Polypeptides are chains of amino acids. They can coil/fold into different shapes. Some 'R'-groups are either hydrophobic, hydrophilic, or neutral in their charge. Suppose you have a very long polypeptide, where a part of the chain is hydrophobic and another part is hydrophilic. I go ahead and drop this long polypeptide in water and it coils up. How do you think it would coil? Why? What can you infer about the proteins in our bodies regarding this situation

Answers

Answer:

The hydrophilic part of the polypeptide chain would be oriented towards the surrounding water while the hydrophobic portion would be arranged away from the water and would make the hydrophobic interior resulting in coiling of the polypeptide chain. The body proteins assume the shapes to organize their hydrophobic parts away from the watery fluid.

Explanation:

Amino acids are the monomers of proteins. Each amino acid, present in proteins, has a central carbon atom. Four functional groups are attached to the central carbon atom of amino acid. These are the carboxyl group (COOH), amino group, a hydrogen atom (H) and a side chain (called R group). Amino acids differ from each other for the side chain present in them. Based on the nature of the side chain, amino acids are hydrophobic or hydrophilic or neutral. Sidechains of some amino acids are charged and have positive or negative charges on them.

The extracellular fluid of the body is a watery medium. Blood also has liquid plasma that is 99% water. The intracellular fluid, called cytosol, is also a water-based liquid.  

The hydrophilic side chains of the amino acids interact with the watery surroundings. They can make hydrogen bonds with the water. The charged hydrophilic R groups make electrostatic interactions with the surrounding medium. The hydrophobic R groups of the amino acids tend to arrange themselves away from the watery medium. This makes the part of the polypeptide chains with hydrophobic amino acids to fold so that these R groups are oriented away from the water.

Similarly, when a long polypeptide chain is dropped in the water, the hydrophobic R groups are arranged away from the water while the hydrophilic ones are arranged towards the surface of the chain facing the water. It is done to adopt a stable shape where maximum attraction forces are established.  

can anyone give me these two answers please i’ll give u 15 points

Answers

Answer:25%

Explanation:

50% because it is half and half. let’s think of the parents as two and the letters as 100. Splitting them up between the two parents would leave us to 50%.
Thus, your answer is 50%

Which cell structures are seen in all cell types? Check all that apply.
Organisms that contain only one cell and do not contain a nucleus or membrane-bound organelles are known as
.

Answers

Answer:

unicelluar

Explanation:

I just reasearched

Proteins...

A) provide support, structure and storage
B) help organisms maintain homeostasis
C) help carry important molecules around the body
D) all the above

Answers

I would say the answer is c or d

Answer:

D all of above

Explanation:

Which statement forms part of cell theory?

Answers

Answer:

All living things are made up of cells.

The cell theory is a widely accepted principle of biology. Scientists that contributed to the cell theory include; Theodor Schwann, Matthias Schleiden, and Rudolph Virchow.

The cell theory states that;

All living organisms are made up of cells and they may be unicellular or multicellular.

The cell is the basic structural and functional unit of life.

Cells arise from pre-existing cells.  

two or more functions that must occur
inside of our body so that we stay alive.

Answers

Answer:

hope this helps u

Explanation:

These many functions can be summarized in terms of a few that we might consider definitive of human life: organization, metabolism, responsiveness, movement, development, and reproduction.

Which organisms undergo Carnegie stages?

Answers

Answer:

B: Sheep

Explanation:

only mammals undergo Carneige Stages

Answer:

Salamander and Sheep!

Explanation:

summarize the importance of stem cells

Answers

Answer:

Stem cells can become almost any cell in the human body.

Explanation:

This is important because in embryonic development, the body uses stem cells to form each individual part. For example, a single stem cell could become a heart cell, or brain cell, or a blood cell, or more. This is also important for possible treatments. In order to heal damaged or diseased bone tissue, blood stem cells can be taken out of the same person and used to fix the tissue. This allows for a lower rejection rate sense the cells used to fix the tissue were already part of the person's body.

plz help meeee!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

i think it is the middle one

B

2Mg + O2 ----> 2MgO
in the equation above , how many atoms are in the oxygen molecule

A.2

B.0

C.1

D.3 ​

Answers

Answer:

2

Explanation:

(gene) a segment of DNA that ______ for a trait and is transferred from parent to offspring.

Answers

a segment of dna that 4freakshow for a trait a sand it transferred

In what ways are the ingredients in a cake like the gases in Earth’s atmosphere?

Answers

Answer:

because there are different types of gases and layers of the atmosphere on earth.

Explanation:

List two factors that may cause cancer, and explain those factors as to how they affect cancer.

Answers

Answer:

Biological or internal factors such as age,gender, inherited genetic defects,skin types,etc

environmental exposure eg exposure to Radon and UV radiation and fine particulate matter

Choose all the answers that apply.

Muscles in the small intestine are _____.

smooth
striated
involuntary
voluntary
cardiac

Answers

Answer:

involutary

Explanation:

we don't have to will it to work

Smooth because the small intestine muscle is made up of two smooth muscles

A change in the characteristics of
populations of living things over
time is called evolution.
Agree or disagree

Answers

Answer:

Agree

Explanation:

Answer:

Yes, it is true

Explanation:

Evolution is the processes in which organisms change or evolve, either anatomically or physiologically.

 

please help me fill out this concept map!! it’s about Cultural Eutrophication

Answers

Okay where is the map

Why did the narrator use the phrase "fit together like puzzle pieces" to describe how the cells of a developing human
embryo form a human face?

Answers

Answer:

The narrator uses that phrase because the pieces of the skin and face feathers have to come together as one to create a human head so they would be fitting together like puzzle pieces.

Explanation:

Answer:

The human face doesn’t form all at once. It requires many divisions of cells. As the cells divide, they eventually piece together to form a human face.

Explanation:

Why is the nutrient cycle important?
a) both answers
b) neither answers
c) it limits the accumulation of elements which may have become toxic
d) it guarantees ecosystems don’t run out of nutrients

Answers

I beleive the answer is D, it is called the Nutrients cycle.

D) it guaranteed ecosystem

How does double circulation prevent the mixing of oxygenated and deoxygenated blood

Answers

Answer:

By the process of double circulation the oxygenated blood go through its own path and deoxygenated blood go through its own path

Describe the similarities between enzymes and receptors.

Answers

Answer:

Receptors and enzymes are both located in the cell membrane. Receptors and enzymes are both proteins that can cause a reaction or response. Receptors and enzymes both speed up chemical reactions. Receptors and enzymes do not have any similarities.

Explanation:

Enzymes are known as biological catalysts. They speed up a chemical reaction taking place inside the body. Receptors can be defined as the chemical structures that transduce and receive signals.

The similarities between enzymes and receptors are as follows:

Both are composed of proteins.Both contain specified sites for their substrates.Receptor causes a response and enzymes facilitates a reaction.

Both are proteins and both are crucial for the completion of different functions in the body.

https://brainly.com/question/18960109

2. Examine the arm bones of the two skeletons. Was Grandmother right- or left-handed? How
about Grandfather?

Answers

Answer:

He looks ambidextrous but he may also be right handed due to the slight more bone on his right arm.

Explanation:

Its a little hard to tell, my guess is that he was ambidextrous, but his right arm does look slightly more dominant so really it may be his right arm.

the dispersal of ink in a beaker of water is an example of
a. endocytosis
b. diffusion
c. active transport
d. osmosis

Answers

The answer is diffusion.

Answer:

A

Explanation:

Diffusion is the answer:)))

Need Help Earth Science: Due in 3 minutes

Which of the following is not an example of a fossil:

Question 1 options:

A) petrified wood


B) coprolite


C) amber


D) mud

Answers

Answer:

Answer is Mud,

Normal homeostatic conditions require potassium concentrations to be about 1000 times higher inside the cell than in the blood.

What mechanism does a cell use to move these small potassium molecules into the cell against the concentration gradient?
A.
active transport by proteins
B.
active transport by endocytosis
C.
passive transport by osmosis
D.
passive transport by diffusion

Answers

The answer to that is D

what is the function of the enzyme-substrate complex ​

Answers

When an enzyme binds its substrate, it forms an enzyme-substrate complex. This complex lowers the activation energy of the reaction and promotes its rapid progression by providing certain ions or chemical groups that actually form covalent bonds with molecules as a necessary step of the reaction process.

Through which conversion is energy released?

Answers

ATP to ADP? Because that’s energy conversion?

Answer:

ATP to ADP

Explanation:

bc yah

what is the definition of rough ER

Answers

Answer:

Edoplasmic reticulum

Explanation:

it's a network of membranes that folds, modifies, and transports proteins throughout the cell.

If something irritates the nerves going to your diaphragm, it will spasm
and you will ______.

Answers

Answer:

guess

Explanation:

Hiccup! I hope this helps ❤️

Carbon atoms have four electrons in their outer shell. This means that a single carbon atom can form up to _______ bonds with other atoms.

Answers

Answer:

four

Explanation:

Carbon atoms have four electrons in their outer shell. So, it exhibits tetravalency & thus, a single carbon atom can form a maximum of four (4) bonds with other atoms

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