Rewrite this hypothesis so that its more useful when experimenting : bean plants will grow more slowly when exposed to acid rain

Evidence suggests that first, ____________ were acquired when an aerobic bacterium was engulfed by larger cells and became mutua

leonid [27]

Answer:

1. Mitochondria

2. Chloroplast

3. the formation of eukaryotic cells

4. DNA

Explanation:

The theory of endosymbiosis was proposed by the Lynn Margulis in 1967 which suggested that the eukaryotic organelles like the mitochondria and chloroplast evolved when another prokaryotic cell engulfed the prokaryotic bacteria.

The mitochondria were formed when the chemosynthetic bacteria were engulfed by the bacteria and the engulfed bacteria formed a symbiotic relationship. Similarly, the chloroplast was originated in the same way when the photosynthetic bacteria were engulfed by another prokaryote.

The evidence which supports their ar:

1. The same size of the organelles to the bacteria

2. The presence of the circular DNA of the organelles like bacteria

3. The similarity in the 30s and 70s ribosomal subunits.

7 0

3 years ago

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Match the reproductive structures based on their function and the system to which they belong.

Rashid [163]

Complete question: Find the complete question in the attached file below.

Answer: From the question, the system to which the structures belong are:

Female reproductive structures include: Egg, ovary, fallopian tube, vagina.

Male reproductive structures include: Urethra, sperm, testis, Vas deferens

Explanation:

The female reproductive system is made up of structures, listed above, which functions together with the purpose of reproducing offsprings. Below is the structure matched with the correct function from the question given:

--> Egg: This functions as the sex cell or gamete

--> ovary: The site where gamete are produced

--> Fallopian tube: This functions to transport the gamete from the site of production in the reproductive system

--> Vagina: connects the internal reproductive fluids to the exterior.

The male reproductive system are also made up of structures that functions together to bring about the fertilization of the female sex cell. Below is the structure matched with the correct function from the question given:

--> Urethra: connects the internal reproductive fluids to the exterior.

--> Sperm:This functions as the sex cell or gamete

--> Testis: The site where gamete are produced

--> Vas deferens: This functions to transport the gamete from the site of production in the reproductive system.

7 0

2 years ago

How can scientific knowledge impact a decision about treating a disease outbreak?

andreyandreev [35.5K]

During any outbreak or whenever problems occur, there are always three major steps to take.

1. First, is the containment action. In this step, actions are taken to reduce or lessen the severity of the people affected. This aims in isolating the disease. In this step, scientific knowledge is used in making decision on what containment actions to take.

2. Second is the corrective action. This step focuses solely on formulating medicine to treat the disease. Once again scientific knowledge is used in creating those medicines.

3. Third is the preventive action. To prevent this disease outbreak from recurring, certain actions are made to ensure this does not happen again.

6 0

3 years ago

How do all multicellular organisms begin? A. as complex organisms B. as a single cell C. by expanding the size of their cells D.

exis [7]

<span>B is the correct answer. Multicellular organisms, as with almost all organisms, begin life as a single cell. The increase in the number of cells can be as a result of cell division or cells combining together. </span>

4 0

2 years ago

This is a question that has been confusing - In addition to carbon dioxide, what other two ingredients does a plant need for pho

Ahat [919]

Answer:

Carbon dioxide, water and sunlight

5 0

3 years ago

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