Which of the following regarding cells is true? a. They are the most basic unit

Question

Which of the following regarding cells is true? a. They are the most basic unit of life which make up organism. b. they are the simplest form of life c. cells Differ in size, shape, and chemical requirements which reflect differences in cell function d. cells vary when viewed from the outside, but they are fundamentally similar on the inside e. all seem to be correct Which of the following choices lists the correct order of flow of information according to the central dogma? a. DNA rightarrow mRNA rightarrow Protein b. RNA rightarrow DNA rightarrow Protein c. DNA rightarrow Protein rightarrow mRNA d. Protein rightarrow DNA rightarrow RNA Which of the following best defines evolution? a. A certain group of animals that do not accumulate adaptations overtone, making them unfit to survive in their environment b. A certain group of animals accumulate adaptations overtime, making them better sorted to their environment c. A sodden mutation in the genes of an individual, causing them to suddenly become better sorted to the environment d. Nature selects for the worse trait to survive and reproduce to pass on its favorable genes e. Yeah, I do not know Increase in antibiotic resistant bacteria is most likely due to: a. Genetic engineering b. Lab creations c. Evolution d. Taxonomy Which of the following chokes concerning enzymes is incorrect? a. They are protein molecules b. They area type of lipid c. Function as an organic catalyst d. Has a substrate where the active site binds to e. More than one seem to be incorrect All define the cell theory except: a. Cell is the most basic unit of the universe b. All organisms, including viruses, are composed of cells c. All cells come from any form of matter d. Yeah, I do not see the answer anywhere Which instrument can I use to see detailed surface of a cell and other structures: a) Light microscope b. Transmission electron microscope c. X-ray crystallography d. Scanning electron microscope

Explanation / Answer

Answer:

1). E. All seem to be correct

Explanation:

Cell is a basic structural and functional unit of an organism. Cell size & shape may be varies in different organisms or different parts of the same body.

2). A. DNA---mRNA----Protein

Explanation

DNA----Transcription-----mRNA

mRNA----Translation-----Protein

3). B. A certain group of animals accumulate adaptations overtime, making them better suited to their environment

Explanation:

Evolution: It is the theory that all plants and animals developed gradually from earlier forms over a long period of time and that variations within a species are the result of adaptive traits passed on from generation to generation.

4. C. Evolution

Explanation:

Increase in antibiotic resistant bacteria is most likely due to misuse of antibiotics. This causes the bacteria to adapt antibiotics.

5). B. They are a type of lipid

Explanation:

All enzymes are proteins. They act as catalysts and they have active sites, at which substrate binds.

6). C. All cells come from any form of matter

Explanation:

Cells come from pre-existing cells but not from any form of matter.

7). D. Scanning electron microscope

Explanation:

The scanning electron microscope uses electrons that are scattered or emitted from the specimen's surface.

8). C. Endosymbiotic theory

Explanation:

The endosymbiotic theory describes how a large host cell and ingested bacteria could easily become dependent on one another for survival, resulting in a permanent relationship. Over millions of years of evolution, mitochondria and chloroplasts have become more specialized and today they cannot live outside the cell.

9). C. Mitochondria

Explanation:

Chloroplast & cell wall is found only in plants.

Centrioles are found in only in animals.

ATP is not cell organelle.

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