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Licemer1 [7]
3 years ago
10

___________________, produced by stem cells found in bone marrow , manufacture antibodies used to counter the effects of antigen

s.
A.) T-Cells
B.) B-Cells
C.) Macrophages
D.) A- Cells
Biology
2 answers:
Alexeev081 [22]3 years ago
8 0
ANSER :

B.) b-cells

EXPLIMAITION :

lesya [120]3 years ago
7 0

Answer:

B cells develop into plasma cells that make antibodies to fight infection.

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What does mitosis produce <br> a. body cells <br> b. sex cells <br> c. dna <br> pls help me
xxTIMURxx [149]

Answer:

a. body cells

Explanation:

Body cells are eukaryotic. Eukaryotic cells replicate via mitosis.

6 0
3 years ago
The respiratory system branches like the circulatory. Oxygen and carbon dioxide diffuse between the end of these branches and th
Feliz [49]

Answer:

1. Ends of the respiratory branches are called alveoli.

2. C. To control blood flow to different areas of the body depending on activities

Explanation:

1. The trachea divides into left and right primary bronchi which in turn divide multiple times upon entering the lungs and make the bronchial tree.

The final branches of the bronchial tree are the terminal bronchioles that lead to alveoli. The alveoli are the balloon-shaped structures and serve as the site of gas exchange between the blood and inhaled air.  

2. The opening and closing of sphincters of capillary beds regulate the direction of blood flow. The opening of sphincters allows the blood to flow into associated branches of capillary beds while closed sphincters direct the blood from arterioles to venules via thoroughfare channel.

This local change in blood flow is responsible for the autoregulation of blood flow to different tissues to match their respective metabolic demands. For example, during physical activity, more blood is directed to skeletal and cardiac muscles.

8 0
3 years ago
Shortly after gastrulation, the body and organs of the embryo begin to form. This process is called?
eimsori [14]

Shortly after gastrulation, the body and organs of the embryo begin to form. This process is called <u>embryogenesis.</u>

<u></u>

  • The process by which an embryo transforms into a fetus is known as embryogenesis.
  • The three germ layers that eventually give rise to the various organs in the animal body are formed as a result of gastrulation.
  • Embryogenesis is the name of this process. As a result of differentiation, organs emerge from the germ layers.
  • The process of creating and growing an embryo from a zygote (zygotic embryogenesis) or a somatic cell is known as embryogenesis (somatic embryogenesis).
  • An incredibly well-organized series of cell division, expansion, and differentiation takes place during embryo development.

learn more about embryogenesis here: brainly.com/question/26087722

#SPJ4

4 0
1 year ago
Do ionic bonds give electrons?
Korolek [52]

Answer:

In ionic bonds, there is a transfer of electrons from one atom to another. Because of the transfer of electrons, the atoms that gain electrons become negatively charged, while the atoms that lose electrons will be positively charged. [1] If the atom has an additional electron, then the atom becomes a negative ion, known as anion. Meanwhile, if the atom loses electrons, then the atom becomes a positive ion or cation. [2] Because of the difference in charge between ions (positive ions and negative ions), the positive and negative ions will attract each other by electrostatic forces. This event is the basis of ionic bonding.

#sorry if wrong

4 0
3 years ago
Which of the following statements about the light reactions of photosynthesis is true? a. There are two distinct photosystems, l
Natali5045456 [20]

Answer:

Option (A).

Explanation:

Photosynthesis may be defined as the process in which the light energy has been converted to the chemical energy so that plants can obtain their food with the help of sunlight, carbon dioxide and water.

Photosynthesis is divided into light reaction and dark reaction. The light reaction of photosynthesis is linked together by the mechanism which is similar to the electron transport chain of mitochondria.

Thus, the correct answer is option (A).

8 0
3 years ago
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