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saveliy_v [14]
2 years ago
11

while the largest member is about 30 centimeters long. Which of these lists best describes this order?

Biology
1 answer:
Bond [772]2 years ago
7 0
Is there a picture provided?
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Based on the diagram how is electricity formed?
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When you rub it, it creates some electrical forms inside that will charge it
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We can measure ___ waves with instruments <br><br> A- Brain<br> B- Hand<br> C- Volume<br> D- Feet
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Write a sentence that compares the reactants and products of photosynthesis with the reactants and products of respiration.
Anna11 [10]

Answer/Explanation:

Using solar energy, photosynthesis uses carbon dioxide and water to produce glucose and oxygen, whereas respiration uses glucose and oxygen to produce energy, releasing carbon dioxide and water.

Therefore, photosynthesis and respiration act as a cycle, using reverse reactants and products.

Photosynthesis builds food for the cell to use, respiration uses this food to power cellular processes.

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2 years ago
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
When the triceps brachii extends the arm, the levator
sineoko [7]

Answer:

the triceps brachii of the posterior arm is an agonist that causes forearm,this muscle helps depress and protract (pull anteriorly) the scapula and rhomboid minor also works as a synergist to the Pectoralis major in flexing and adducting the arm,the serratus anterior differs from the subclavius and pectoralis minor in that. Functional demands have resulted in the evolution of individual muscles from the basal unit formed by the serratus anterior. In primitive life forms, the main function of the axioscapular group is to control the movements of the vertebral border of the scapula: fibers concerned with the dorsal movement of scapula evolved into the rhomboids, those with ventral motion into serratus anterior, and those with cranial movements into levator scapulae. The evolution of the serratus anterior itself has resulted in (1) grouping of its distal and proximal fibers, (2) size reduction of its intermediate fibers, and (3) the insertion of its dominant superior and inferior parts onto the superior and inferior angles of the scapula

Explanation:

5 0
3 years ago
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