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rodikova [14]
3 years ago
9

_____ is a T-cell-specific adhesion molecule expressed before the expression of a functional T-cell receptor while the thymocyte

s are still in their double-negative stage of development
Biology
1 answer:
NARA [144]3 years ago
8 0

Answer:

CD2

Explanation:

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Korolek [52]

Answer:

Nonmetallic

Explanation:

I just took the assignment and I am Big Brain.

7 0
3 years ago
Read 2 more answers
A recessive allele causes phenylketonuria (PKU) when homozygote. If the frequency of the recessive allele is 0.05 in the populat
Radda [10]

Answer:

0.095

Explanation:

Phenylkentonuria is a disease caused by a recessive allele.

The frequency of the recessive allele + the frequency of the dominant allele equals 1.

The frequency of the recessive allele is q = 0.05

The frequency of the dominant allele then is p = 1  - q = 0.95

If people mate randomly, the frequency of the homozygous dominant genotype will be p², the frequency of the heterozygous genotype will be 2pq and the frequency of the homozygous recessive genotype will be q² .

2pq=2× 0.05 × 0.95

2pq=0.095

The heterozygote frequency in the population is 0.095

4 0
3 years ago
How do some protozoans respond to adverse environmental conditions ?
blsea [12.9K]
<span>"they form a cyst: a hard covering is formed around the protozoan and metabolic rate is slowed"</span>
8 0
3 years ago
What would you say is the most significant result of the technology revolution in archaeology ?
Igoryamba

Answer:

Improvement of preservation techniques.

Explanation:

The most significant result of the technology revolution in archaeology is the improvement of preservation techniques used for archaeological sites. Modern technology also allows researchers to go to a site in order to find out  the answers of additional questions. Modern archaeologists are fighting climate change, discovering how cultures evolved with the passage of time, and using technology to better understand human evolution.

8 0
3 years ago
What is the role of a lipid molecule, which atoms make up most lipids, how does the lipids structure relate to its function.
Alisiya [41]

Answer and explanation;

-All lipids contain carbon, hydrogen, and oxygen. Some of them also contain nitrogen and phosphorus. The four main classes of lipids are fats, waxes, sterols, and phospholipids. Fats are triglycerides.

-The functions of lipids include storing energy, signaling, and acting as structural components of cell membranes.

-Lipids are water-insoluble (hydrophobic), and this property is put to great use in the organisation of cells and tissues.

For example; phospholipids are a class of lipids that is amphipathic; that is it contains fatty acid tails that are hydrophobic, and a phosphate head that is hydrophilic. This means the phosphate group will orientate itself towards water and away from the rest of the molecule, and also gives rise to the special properties that allow phospholipids to be used to form membranes.

5 0
4 years ago
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