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matrenka [14]
4 years ago
15

Why is it important to carefully insert and remove the needle?

Biology
1 answer:
Grace [21]4 years ago
5 0
It is important to carefully insert and remove the needle so the bacteria isn't spread throughout the medium. 
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How many daughter cells result from a parent cell in meiosis?
masha68 [24]

Answer:4 haploid daughter cells

Explanation:

Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction. During reproduction, when the sperm and egg unite to form a single cell, the number of chromosomes is restored in the offspring.

Meiosis begins with a parent cell that is diploid, meaning it has two copies of each chromosome. The parent cell undergoes one round of DNA replication followed by two separate cycles of nuclear division. The process results in four daughter cells that are haploid, which means they contain half the number of chromosomes of the diploid parent cell.

4 0
3 years ago
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Genetic and environmental factors affect which traits are passed on from parent to offspring over generations and how they are p
yulyashka [42]

Answer:

What is the question?

Explanation:

3 0
3 years ago
There can be different variations of a trait known as __________
nata0808 [166]

the offspring of crosses between parents with different traits?. Such as, the process by which peas are allowed to self-pollinate and produce offspring identical to themselves. A specific characteristic that varies from one individual organism to another. The offspring of crosses between parents with different traits. The chemical factors that are passed from one generation to the next.

7 0
3 years ago
Ringing in the ears is called:
Elza [17]

Answer:

c. tinnitus

Explanation:

Tinnitus (a hearing impairment) is a form of  hearing of sound when no external sound is present Which is often described as a Ringing,Tinnitus may also sound like a clicking or roaring. i.e usually unclear voices or music are heard. The sound may be soft or loud, low or high pitched, and appear to be coming from one or both ears. Ranging from one person to another, the sound may causes depression or anxiety and can interfere with concentration.

Otitis externa is a condition that causes inflammation , the inflammation also covers  (redness and swelling) of the external ear canal, i.e the tube between the outer ear and eardrum.

Meniere's disease popularly called (MD), is a disorder of the inner ear that is characterized by episodes of feeling like the world is spinning (vertigo), hearing loss, and a fullness in the  ear. The cause of MD involves both genetic and environmental factors. Some of the factors include constrictions in blood vessels, viral infections, and autoimmune reactions.

Otosclerosis is a condition where one or more foci of irregularly laid spongy bone replace part of normally dense enchondral layer of bony otic capsule in the bony labyrinth. This condition affects one of the ossicles (the stapes) resulting in hearing loss, vertigo or a combination of symptoms.

Therefore from the foregoing we can conclude that Tinnitus is the correct anwser.

4 0
4 years ago
Read 2 more answers
What would occur if cells did not have enzymes?
romanna [79]
If we dont have enzymes then we would become malnourished as our body wouldnt be able to absorb the nutrients. Enzymes work in digestion to break down the food we eat

8 0
3 years ago
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