1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Andru [333]
3 years ago
8

When the body is attacked by a foreign substance, the ____ defenses are the first to react.

Biology
1 answer:
natima [27]3 years ago
7 0

B lymphocyte is the answer

 


You might be interested in
Alimentos mexicanos de alto valor nutrimental
Vesna [10]
Vejetales
Carne
Pollo
Pescados
Pan (poco)
7 0
3 years ago
The difference between PCR and real-time PCR is thatA. real-time PCR can measure the amount of DNA amplified as the reaction pro
Reika [66]

Answer:

The correct answer is <em>A. real-time PCR can measure the amount of DNA amplified as the reaction proceeds, while standard PCR cannot.</em>

Explanation:

PCR (Polymerase Chain Reaction) is a molecular biology technique. Conventional PCR and real-time PCR are diferent types of PCR, and are both used to exponentially amplify DNA molecules. In both types, a polimerase enzyme is employed to sinthesize DNA copies. The main difference is that conventional PCR is qualitative whereas real-time PCR is quantitative. So, real-time PCR permits not only to detect and amplify DNA but also permits to perform a quantification of the target DNA. This is accomplished by measuring a fluorescence signal - which is directly the amount of DNA amplified- during the course of the reaction.

4 0
3 years ago
Which of the following is an accurate description of an adult stem cell?
frosja888 [35]
I believe the answer is C). My reason for this is because multipotency stands for multidifferentiative potential. And this is the ability to generate progeny of quite a few distinct cell types. And adult stem cells have that ability. Hope this helps.
4 0
3 years ago
Neurotransmitter systems are particularly associated with (a) depression, (b) anxiety, (c) pain, and (d) addiction?
Ainat [17]
I think it is c but I’m not sure
8 0
2 years ago
Plants absorb 1.____ from the atmosphere and release 2.____ to the atmosphere.
zzz [600]

Answer:

1. Carbon dioxide

2. Oxygen

Explanation:

3 0
2 years ago
Read 2 more answers
Other questions:
  • A person with emphysema will exhibit signs of select one:
    7·1 answer
  • What are two plants whose stems store water?
    12·1 answer
  • What happens to sunlight in photosynthesis?
    14·2 answers
  • This tortoise is eating cactus on a sunny day. Is carbon moving into the air, moving
    11·1 answer
  • Please help me with the image that I am going to attach! I am very confused
    7·2 answers
  • PLEASE HELP IT IS DUE NOW
    14·1 answer
  • Long chains of sugar are called?
    12·2 answers
  • Part A: Analyze the experimental setup. Explain if students effectively managed the variables in this experiment.
    8·1 answer
  • Channel between the middle ear and the nasopharynx.
    14·1 answer
  • The goal of a astatement of purpose is:
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!