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
icang [17]
3 years ago
8

Clonal expansion occurs after the activation of a b lymphocyte. a. True b. False

Biology
1 answer:
olga nikolaevna [1]3 years ago
4 0
The answer to this question is true. The clonal expansion does occur after the activation of a B lymphocyte. Clonal expansion is what gives the adaptive immune system its might and specificity.During clonal expansion lymphocytes multiply and become more in number.
You might be interested in
18.
bagirrra123 [75]

The correct answer is rapids and waterfalls.  

Rapids refers to the segments of streams with extensively vigorous currents, various obstacles, and steps in their streambeds. A waterfall refers to a vertical drop in a stream bed. Both are the locations of vigorous erosion.  

The rapids are generally produced where the resilient bedrock limits a stream to a narrow channel and forces an enhancement in the velocity of water.  

On the other hand, waterfalls are produced where the fast-flowing water negotiates a geologic contact amid the more resilient and less resistant layers of rock, or through a fault, which has analogized distinct kinds of rocks. Or it can be said that waterfalls usually produce at the end of a series of rapids.  


3 0
3 years ago
Read 2 more answers
List 2 things that happen to cells during anaphase
devlian [24]
<span>The spindle fibers continue to shorten and move towards opposite ends or poles of the cell. This causes the cell to elongate. The chromosomes during anaphase usually have a distinct V shape. There are also two distinct sets of chromosomes now, and each daughter cell will get one set.</span>
5 0
4 years ago
The water we drink now was the same water the dinosaurs drank. Discuss how the water cycle makes this statement accurate. Includ
aleksandr82 [10.1K]

Answer:

This is what I got for the answer, I do not know if this is right though.

Yes. The water on our Earth today is the same water that’s been here for nearly 5 billion years. Only a tiny bit of it has escaped out into space. As far as we know, new water hasn’t formed either.

That means there’s a very high chance the water in your glass is what thirsty dinosaurs were gulping about 65 million years ago.

It’s possible that you could drink the same water as a stegosaurus or a T-Rex because of the way water circulates around our planet. A dinosaur, you, and I are actually part of this water cycle, too.

As water on the surface of lakes, oceans, and rivers warms up, it travels into the sky as very tiny droplets, or vapor. When the water vapor gets colder, it turns back to liquid to help form clouds.

When the liquid gets so heavy it can’t stay in the atmosphere anymore, it falls, or “precipitates,” as rain, snow, sleet, hail, or, my favorite, graupel. Once the precipitation reaches the ground or lands in lakes, oceans, and rivers, the cycle continues.

You, a dinosaur, and I drink water, and eat foods that contain this water, too. It’s so refreshing to lap it up from my bowl. We get rid of some water as fluids or gases, such as the ones we let out when we breathe.investigates the water beneath Earth’s surface. He’s a geologist with Washington State University’s School of the Environment.

He said water also moves in ways we don’t always think about. Scientists have found water trapped in minerals deep within the Earth’s mantle and crust, he explained. This water is even older than dinosaurs. It doesn’t look like liquid water that’s in your glass, but it still made of the same stuff.

“We’ve realized there is a lot of water down there,” Keller said. “There’s as much water chemically speaking, more or less, as there is in the oceans. It’s just in a different form.”

Another place we find water from dinosaur days is in organic matter. When the dinosaurs died, their bodies broke down to become part of the Earth. Over time, some of this organic matter became shale, coal, and oil we use for fuel.

The water dinosaurs drank is in more than just the water we drink, minerals, and organic matter. It’s also what we use to shower, cook, and water plants for food.

Right now, Keller is visiting with fellow scientists at the Global Institute for Water Security in Saskatchewan, Canada. They are curious about how we’ll take care of our water for the future.

“Life as we know it – every cell in every plant and animal — is mostly water. To say it requires water is an understatement,” Keller said.

The water in your glass may be the same water dinosaurs drank, but it’s also the same water that’s going to keep life on our planet in the years to come.

3 0
3 years ago
Which statement would not be included in a<br> summary of the cell theory?
Leona [35]

Answer:

Where is the Pic?

Explanation:

8 0
4 years ago
Select all that apply. Which of the following are not properties of proteins?
Leona [35]

Answer:

The correct answer is C: Derived from oils and the fat of meat

Explanation:

Amino acids are the building blocks of proteins. Each amino acid is composed of a monomer, and these monomers join together to form a complex molecule called polypeptides.

For example, hemoglobin is an oxygen-carrying protein in the red blood cells. It is a globular protein and is made up of two polypeptide sub units. It consists of two alpha and two bets chains.

Proteins are rich energy units and there are different sources of proteins such as beans, pulses, seeds, nuts, milk, and yogurt, etc.

3 0
3 years ago
Other questions:
  • Fe + O2 → Fe2O3 This equation is unbalanced. what is the correct balanced equation
    14·1 answer
  • Which statement about RNA is not true? Uracil is found in RNA as one of the two pyrimidine nitrogenous bases. RNA possesses cata
    7·2 answers
  • The first stage involves creating a filtrate in the ____________ . Second, the filtrate flows through the tubules and useful sub
    12·1 answer
  • A form of simple diffusion is Osmosis. In which direction will water flow in the process of Osmosis?
    14·1 answer
  • In Mendelian case, the offpspring will take on the pheonotype of the parent that donates the dominant allele True Or False. I'm
    11·1 answer
  • Bored. Is Anyone else?? Lol
    8·1 answer
  • I 12<br> 15<br> 18 러 러<br> 27<br> 30<br> 2<br> 10<br> 250<br> 27<br> 181<br> 243<br> 729 2, 187
    13·1 answer
  • Local anesthetics, like lidocaine and novocaine, reduce the perception of pain by:__________. A. blocking transmission of impuls
    6·1 answer
  • D
    7·1 answer
  • Membranous sacs containing substances that were produced in the cell, such as neurotransmitters or hormones, are called:
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!