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GaryK [48]
2 years ago
5

The double-lobed mass of tissue located in the mediastinum along the trachea behind the sternum that is involved in immunity is

known as the
Biology
1 answer:
Vesna [10]2 years ago
5 0

Answer:

The correct answer is thymus gland.

Explanation:

In the immune system, the thymus is considered as a primary lymphoid organ. Thymus is present behind the sternum, above the heart and between the two of our lungs. It is made up of two-lobed and is involved in releasing hormones and providing immunity.

Thymus is the primary site where T- cells become mature. T- cells are formed in bone marrow but reaches to thymus for maturation. These mature T- cells play a very important role in providing adaptive immunity against foreign molecules.  

Thymus is larger till puberty and it slowly shrinks as the age increases. So the correct answer is thymus.

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A study has shown 75% of teenage boys drink 1 liter of soda per day. How many 250 ML cans of soda would a boy drink in a week if
victus00 [196]
28 cans of 250 ML soda in a week.
5 0
3 years ago
Active transport requires energy because it usually involves the movement of
Afina-wow [57]
Particles or molecules that are too big to fit through regular pores in the cell membrane, or have to big an electric charge, against the current of passive transport ( lower to higher ).
8 0
3 years ago
Which best describes the offspring of protists?
Hunter-Best [27]

Options found elsewhere:

-always genetically identical to one parent

-always genetically identical to both parents

-never genetically identical to one parent

-sometimes genetically different than both parents

Answer:

-sometimes genetically different than both parents

Explanation:

Protists are eukaryotes that cannot be classed as animals, plants, or fungi. They are quite diverse. Examples include amoeba, plasmodium, and slime mould.

Because they are so diverse, protists also have very different modes of reproduction. Some protists undergo asexual reproduction, where they simply make a copy of themselves without a mate. Others undergo sexual reproduction.

Therefore, the only option that can be correct is "-sometimes genetically different than both parents" .

If they were always genetically identical to one parent or both parents, that would mean that sexual reproduction could not be possible. If they were never genetically identical to one parent, that would mean that asexual reproduction could not be taking place.

7 0
3 years ago
Read 2 more answers
Did darwin first believe that each finch he found was a different species? was he right or wrong?.
Ede4ka [16]

Answer:

Wrong

Explanation:

5 0
2 years ago
a type of blindness, occurs in humans and is due to a dominant allele, A. Normal vision is due to the allele, a. Migraine headac
Scorpion4ik [409]

Answer:

The man's father genetics for aniridia is XAY because one copy of the altered gene in each cell is sufficient to cause this disorder.

Explanation:

The aniridia allele in females has to be in the XAXA or XAXa form to be expressed but in males, can be expressed when genotype is XAY.

Migraine headaches allele in females has to be in the XMXM or XMXm form to be expressed but in males, can be expressed when genotype is XMY.

A man with normal vision and without migraines (XaY/XmY) had a father who had aniridia (XAY).

The man's father genetics for aniridia is XAY because one copy of the altered gene in each cell is sufficient to cause this disorder.

5 0
3 years ago
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