BIOLOGY HIGH SCHOOL

Which of the following is not part of the nucleotide a. phosphate
b. saturated lipid
c. nitrogenous base
d. deoxyribose sugar

Answers

Answer 1
Answer: I think the ANswere is D. Dexyribose Sugar 
Answer 2
Answer: The answer is B. Saturated lipid. Every nucleotide contains a base, a sugar, and phosphate.

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Images to promote fitness often lead readers to a certain conclusion about appearance. Which of the following is a practice teens most frequently experience?A. A focus on feeling good about their looks
B. A focus on their appearance
C. A focus on feeling great inside
D. A focus on their health and fitness

Answers

The correct answer should be B. a focus on their appearance. A is incorrect because teens rarely feel good about the way they look, they are always insecure about their body. C is incorrect because teens prefer to look good on the outside than on the inside. And D is incorrect because unfortunately they don't take a lot of care about their health and fitness.

Answer:

B. A focus on their appearance

Explanation:

Which of the following plant-cell organelle supports and maintains the cell's shape and protects the cell from damage? A. cell membrane B. cell wall C. chloroplast. D. vacuole

Answers

Answer;

-Cell wall

Explanation;

-The cell wall is thick and fibrous and provides a barrier between the cell and its external environment.

-The plant cell wall is composed of cellulose. Cellulose is a structural carbohydrate and is considered a complex sugar because it is used in both protection and structure. The plant cell wall consists of three layers. Each layer has its own unique structure and function.

-A major role of the cell wall is to form a framework for the cell to prevent over expansion. Cellulose fibers, structural proteins, and other polysaccharides help to maintain the shape and form of the cell. Additional functions of the cell wall include: Support: The cell wall provides mechanical strength and support.

Cell wall supports and maintains the cell's shape and protects the cell from damage (option B)'

What is Cell wall?

The plant cell is protected by a layer called the cell wall, which encloses the cell membrane. This rigid structure, composed of cellulose offers both support and safeguarding functions, for the cell. Additionally the cell wall plays a role, in preserving the cells shape and preventing it from rupturing when exposed to pressure.

The cell membrane on the hand forms an outer layer encompassing every type of cell.

Learn about cell walls here brainly.com/question/713301

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Proteins have a variety of functions within a living cell. Describe at least three of the possible functions of proteins, and explain how proteins can be so diverse when there are only a limited number of different amino acids.

Answers

anonymous  3 years agoProteins are involved in almost all of the cell's functions. They can act as: Transportation: they can transport hydrophobic molecules in blood for example Regulation: protein hormones and enzymes Receptor: can act as receptors on cell surface and in the subsequent signal transduction (G-protein for instance) It is true that all proteins are made up of up to 20 amino acids, but there are several reasons for their diverse actions: -One reason is the possible sequence and number of amino acids: Met-Ser-His is different from Met-His-Ser for example. Besides, you have different chain length, for a protein is made up of long chain of polypeptide (longer than 50-70 amino acids) and can have any of the 20 amino acids with repetition, so using simple probability, this can provide up to practically unlimited combination with proteins that have chains of thousands of amino acids. -Another very crucial reason for the diversity of protein action is the conformation. A protein passes by at least 3 conformational stages before becoming mature. The straight amino acid chain is the primary structure of the protein that can never be active. Spatial modification of this primary structure results in a secondary structure, Helix or Beta-pleated sheets (or other coiling structure), that is also inactive. Further coiling and bending of the secondary structure produce a 3-dimentional conformation that is the active form of the protein. Moreover, many proteins can undergo further conformational rearrangement and combination with other protein sub-units producing a quaternary structure.

Celiac disease is disease that affect the digestive system. When people eat food containing gluten, material found in wheat product, their immune system damages or destroys their villi. What are villi and why are they important? How might the lack of villi affect a person's digestive process?

Answers

When people eat food containing gluten, material found in wheat product, their immune system damages or destroys their villi, which are important because these are responsible for "pushing" the food down. 

what might happen to a native fish species if an introduced fish species that ate the same foods was released in the pond?

Answers

well the native species might have a possibility of going endangered (in that specific community)

they will obviously compete with the introduced species, but you have to take into consideration that predators who eat fish might prefer one over the other, and how fast each species reproduces

Does dna sythesis occur during interphase or mitosis

Answers

Yes, for eukaryotes which have a nucleus and therefore have to do nuclear division (mitosis), DNA replication occurs during a specific period of interphase. Protein synthesis, which includes transcription and translation, occurs throughout interphase. But neither replication nor protein synthesis occur during M-phase.
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