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Zielflug [23.3K]
3 years ago
13

If 2 organisms are in the same phylum, they are also in the same ____________.

Biology
1 answer:
Marina86 [1]3 years ago
7 0
The answer would be kingdom
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A nurse is evaluating the client's understanding of post cataract surgery instructions. the client needs further education when
Ymorist [56]
The answer to this question should be: <span>"i can return to my normal activities like cleaning my house and vacuuming"

A post cataract surgery patient will be prone to an airborne allergen such as dust so it is not recommended to do any cleaning or be in a place with much dust. Vacuuming will increase the amount of the dust in the room and this might cause damage to the patient eye.</span>
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3 years ago
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All of the following are true of spermatogenesis EXCEPT: Question 18 options: DNA replicates once, but cells divide twice. The p
jolli1 [7]

Answer:

  • One spermatogonium produces 4 spermatids FALSE. One primary spermatocyte produces 4 spermatids.

Explanation:

Germ cells are diploid reproductive cells in charge of gamete production. Germ cells divide by mitosis and meiosis. Through mitosis, they originate more sexual cells, but through meiosis, they produce gametes -sperm and egg cells-. This process is known as gametogenesis.

Gametes´destiny is to merge during fecundation, and a new diploid cell called zygote emerges through fertilization. The zygote is a complete cell and suffers successive mitosis to form the new organism.

Spermatogenesis is the process of production and maturation of sperm cells. Spermatogonia are the masculine diploid germ cells, carrying 46 chromosomes. These germ cells suffer mitosis to reproduce. Some of them stay as spermatogonia, and some others become primary spermatocytes, which are in charge of gamete production. Primary spermatocytes are also diploid cells, meaning that they still carry 46 chromosomes.

Each primary spermatocyte replicates its genetic material and then goes through meiosis I to produce two daughter haploid cells called secondary spermatocytes, each of them carrying 23 chromosomes. Each secondary spermatocyte will produce two other haploid daughter cells by meiosis II.

The total result from the two cellular divisions of each primary spermatocyte is four haploid daughter cells called spermatids.

During spermiogenesis, spermatids mature into spermatozoa or sperm cells. Each sperm cell characterizes by being composed of a head, midpiece, and tail.

  • DNA replicates once, but cells divide twice TRUE
  • The products are spermatozoa that each have a head, midpiece, and tail TRUE  
  • Spermatids containing 23 chromosomes (1n) are produced TRUE
  • One spermatogonium produces 4 spermatids FALSE. One primary spermatocyte produces 4 spermatids.
  • Genetically diverse spermatids are created TRUE
4 0
2 years ago
How do both jetties and seawalls help manage beach erosion?
pshichka [43]

Both are hard structures that reduce erosion causes by waves.

7 0
3 years ago
What is the difference between the substrate and product?​
Archy [21]

Answer:

The key difference between substrate and product is that substrate is the staring material of a chemical reaction whereas product is the compound obtained after the completion of the reaction. The terms substrate and product are used in spontaneous reactions and in reactions upon which an enzyme acts on as a catalyst.

Explanation:

8 0
2 years ago
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In traveling from a forest ecosystem to a grassland, one notes that the trees gradually give way to prairie grasses. The critica
Mademuasel [1]

Answer: Availability of water

Explanation:

When a person is travelling from a forest ecosystem towards grassland ecosystem the number of trees gets reduced in number.

The trees are replaced by prairie grasses. This change is because of less water availability in the area having grass.

The amount of precipitation decides the type of vegetation found in that area.So the area having trees would be having more precipitation as compared to the area having prairie grass.

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