Match the prokaryotic cell structures to the characteristic of life.

Biology

1 answer:

djverab [1.8K]2 years ago

4 0

Answer:

1. Nucleoid: Prokaryotes do not have well defined nucleus. Instead, naked DNA or genetic material is found in the these cells which keeps floating freely in the region of cytoplasm called as mucleoid (nucleus-like). DNA carries the genetic information required for growth, development, metabolic activities and reproduction.

Hence, it must match with b. reproduction: DNA ensures that future generations will be similar to parents

2. Cell wall: Cell wall is the outermost layer surrounding the plasma membrane. It is composed of polysaccharides and is found in bacteria, fungi, and plant cells. In bacteria, it is generally composed of peptidoglycans. Antibiotic such as penicillin acts on the cell wall and creates pores in it which kills the bacteria.

Hence, it can be correctly matched with d. homeostasis: taking an antibiotic, such as penicillin, creates holes in the cell wall of some bacteria, so they lose water and die

3. Flagellum: It is a thread or hair like structure which serves the purpose of locomotion in the cells specially in bacteria, protozoa, spermatozoa etc. In bacteria, it helps in moving in the direction of food and moving away from inhospitable environment.

Hence, it can be correctly matched with e. responding to stimuli: move away from a less hospitable environment or towards a more hospitable environment.

4. Pilus: It is a hair like but rigid structure that protrude from the cell surface of the bacteria. It helps in the process of conjugation by forming a conncetion between cell surface of two bacteria.

Hence, it can be correctly matched with a. reproduction: exchanging genetic material in process of conjugation

5. Ribosomes: Ribosomes serve as the site of protein synthesis in the cell. Bacterial ribosomes are composed of two sub-units with sedimentary constant of 50S and 30S.

Hence, it can be correctly matched with c. maintaining homeostasis: protein is needed for enzymes and repairing structures

6. Cytoplasm: It is gel like material found within the cell (excluding nucleus in case of eukaryotes). All the metabolic activities of the cell generally take place in the cytoplasm of the cell.

Hence, it can be correctly matched with f. homeostasis: using energy, all chemical reactions are performed in the cytoplasm

You might be interested in

What are the differences between mitosis and meiosis in human cells? Pay particular attention to the types of cells, number of d

Nezavi [6.7K]

Mitosis Involves one cell division? Results in two daughter cells Results in diploid? daughter cells? (chromosome? number remains the same as parent cell) Daughter cells are genetically identical Occurs in all organisms except viruses Creates all body cells (somatic?) apart from the germ cells? (eggs and sperm) Prophase is much shorter No recombination/crossing over occurs in prophase. In metaphase individual chromosomes (pairs of chromatids) line up along the equator. During anaphase the sister chromatids are separated to opposite poles. Meiosis Involves two successive cell divisions Results in four daughter cells Results in haploid? daughter cells (chromosome number is halved from the parent cell) Daughter cells are genetically different Occurs only in animals, plants and fungi Creates germ cells (eggs and sperm) only Prophase I takes much longer Involves recombination/crossing over of chromosomes in prophase I In metaphase I pairs of chromosomes line up along the equator. During anaphase I the sister chromatids move together to the same pole. During anaphase II the sister chromatids are separated to opposite poles. Similarities Mitosis Diploid parent cell Consists of interphase, prophase, metaphase, anaphase and telophase In metaphase individual chromosomes (pairs of chromatids) line up along the equator. During anaphase the sister chromatids are separated to opposite poles. Ends with cytokinesis. Meiosis Diploid parent cell Consists of interphase, prophase, metaphase, anaphase and telophase (but twice!) In metaphase II individual chromosomes (pairs of chromatids) line up along the equator. During anaphase II the sister chromatids are separated to opposite poles. Ends with cytokinesis.

8 0

2 years ago

On a dichotic listening task, A. people can accurately monitor two tasks at the same time, except when the tasks are both audito

RideAnS [48]

Answer:

B. people notice little about the message that they are supposed to ignore

Explanation:

In dichotic listening task people are able to concentrate on one voice while ignoring the other. It is observed that during dichotic listening task people concentrate more on one task than other. Sometimes dichotic listening task is used to examine the selective attention of brain. In the test the person is subjected to two voices simultaneously over the headphones and asked to pay attention either one or both voices. Then he is aked questions about the content.

Example; If you are talking on the phone with someone in a room filled with voices of other people, you would be able to listen and concentrate at the voice on the phone while ignoring the other voices because of dichotic listening.

Example; If you are attending a seminar of a psychology professor and some peoples are talking in the hall you would be able to concentrate on the voice of the professor because of dichotic listening.

7 0

3 years ago

Why is soil important to plants?

Elena-2011 [213]

Answer:

D-all of the above

Explanation:

The answer is D because....

Step one, It is not A Because although the statement is true it is not the best answer to fit the question. The soil does provide nutrients but it also does more, it provides temperature control, anchorage for the plant, and the soil contains oxygen in it to help the plant grow.
Step two, lets look at B it provides them with water. Although this is true like A, it does more than provide them with water. It provides them a medium for growth.
Step three, So this answer is not correct because based on the option choices for option D all of the above is correct. It provides them a medium for growth to the plants likings.
Step four. This is correct because all of the above are true and best explain why soil is important to plants.

8 0

3 years ago

Read 2 more answers

Which type of animal does the rainforest contain more than 4000 different species of?

Katarina [22]

The animal that the rainforest contains is a butterfly in Peru. I hope this helps u :)

5 0

3 years ago

Which statement best describes a difference between electromagnetic waves and mechanical waves?

Natasha_Volkova [10]

Answer: im pretty sure its D

Explanation: