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Ipatiy [6.2K]
3 years ago
15

The endosymbiosis theory states the origin of eukaryotic cells began when

Biology
1 answer:
Art [367]3 years ago
5 0

It is thought that life arose on earth around four billion years ago. The endosymbiotic theory states that some of the organelles in today's eukaryotic cells were once prokaryotic microbes.

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He nurse is providing preoperative teaching for a client who is to have cataract surgery. which is appropriate for the nurse to
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The nurse should include the following instructions while performing preoperative teaching for an older adult client who will be undergoing surgery to remove a cataract removed:


1. “A cataract is an opacity of the lens, which may be as a result of aging, sunlight, or trauma.”

2. “A number of different types of eye drops would have to be taken several times a day for up to 4 weeks after the surgery.”

3. “A medication will be administered to help you relax. You will also receive some different eye drops to dilate your pupils and paralyze the lens."

4. "You are required to bring sunglasses with you on the day of your surgery."

5. "Please, may I request you to show me how to put these natural tear drops in your eyes?"

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3 years ago
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Which of the following most often the start of a scientific investigation
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the most often the start of a scientific investigation. is observation

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Muscle contraction occurs due to a series of specific steps that take place within the body. Which of the following steps does n
Burka [1]

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Actin filaments return to their original positions (does not occur in muscle contraction, according to the sliding filament model).

Explanation:

5 0
3 years ago
You are studying a pair of genes (A and B) that either gene alone can cause deafness. Deafness from Gene A is dominant. Deafness
Veseljchak [2.6K]

Answer:

BbxBb.

Explanation:

If Bb gene is crossed with Bb, the offspring is produced with normal hearing because both the genes are recessive in which the deafness gene hide and the hearing gene is dominant so the offspring can hear sounds clearly. The dominant A gene is responsible for deafness and we can see the offspring BbxBb in which no dominant gene is present. The other three offspring are deaf because of the presence of dominant A gene in their genetic makeup.

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3 years ago
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Genetic engineering is best described as:
Serjik [45]

Answer:

D. changing the DNA of a living thing to change its characteristics.

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Genetic engineering is the process of using recombinant DNA (rDNA) technology to alter the genetic makeup of an organism. Traditionally, humans have manipulated genomes indirectly by controlling breeding and selecting offspring with desired traits.

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