Please help with this question worth 20 points

Answer:

To double its attacking power.

Explanation:

"Interaction with armed helper T cells activates the B cell to establish a primary focus of clonal expansion. Here, at the border between T-cell and B-cell zones, both types of lymphocyte will multiply for several days to constitute the first phase of the primary humoral immune response."

this is all from a crossword puzzle Across
7. Organisms which make their own chemical energy.
8. Long whip-like tail, used for locomotion.
9. Organisms which need oxygen to survive
10. Attachment points for bacteria
12. Small organelles involved in making proteins.
13. Name for true, modern bacteria.
14. Name for "squiggly" shaped bacteria.
15. Small circular segment of DNA. Often exchanged
between bacteria.
16. Photosynthetic bacteria containing chlorophyll a &
b.
Down
1. Organisms which obtain energy by consuming organic
material.
2. Structures which bacteria form to endure adverse
situations.
3. Name for all contents of a cell, except for nucleus.
4. Ancient bacteria often found in harsh environments
5. Name for rod-shaped bacteria.
6. Name for round shaped bacteria.
7. Organisms which do not require oxygen to survive.
11. The act of two bacteria joining and exchanging DNA.​

PLEASE HELP ME !
When did whale ancestors begin living full time in the water?

A) before they nursed under water

B) after they began eating a carnivorous diet

C) before they evolved gills

D) after they lost their hind legs

The person tries to spear the fish but he always misses. Why?*​

Which of the following terms describes the following:

a device that converts electric energy into thermal energy

A heating appliance
B windmill
C transistor
D generator

John and Sarah had a child born with cystic fibrosis, a genetic disease. Both John and Sarah were normal, showing no signs of this disorder. How is it possible for them to have a child with this disease?
a. Cystic fibrosis must be a dominant trait disorder hidden in both parents' genotype, but not showing in the phenotype, that could be passed on to offspring.

b.Cystic fibrosis must be a recessive trait disorder hidden in both parents’ genotype, but not showing in the phenotype, that could be passed on to offspring.

c. Cystic fibrosis must be a dominant trait disorder hidden in one parents’ genotype, but not showing in the phenotype, that could be passed on to offspring.

d.Cystic fibrosis must be a recessive trait disorder hidden in one parents’ genotype, but not showing in the phenotype, that could be passed on to offspring

who was the crazy little man who came up with continental drift ??

is the diffusion of water molecules across a
semipermeable membrane and down a concentration gradient.

I need help asap!! Please
It’s due in a little bit

John is completing an internship in biology at the Clearwater Marine Aquarium. While interning there, he monitors an outdoor phytoplankton exhibit to observe how populations of phytoplankton change when exposed to light. It is observed that each year the phytoplankton population within the exhibit increases when it was exposed to high amounts of sunlight. A new apartment complex that overlooks the aquarium is being built. The phytoplankton that were receiving 8-12 hours of sunlight each day will now have between 2-5 hours of sunlight. How will the phytoplankton be affected by the new apartment building?

In which animal, respiration takes olace through lungs and locomotion by flippers? Answer in one word.
​

Why is ATP production Constant?

Which is a disadvantage of asexual reproduction?

What are the cell types of these structures? 20 points and marked brainliest
Nucleus

Nuclear Envelope

Nucleolus

Ribosomes

Cytoplasm

Plasma Membrane

Cell Wall

Prokaryote

Eukaryote

Rough ER

Smooth ER

Golgi Apparatus

Vacuoles

Lysosomes

Chloroplasts

Mitochondria

Cytoskeleton

Microtubules

Microfilaments

Flagella

Cilia


AGAIN PLEASE NAME THE CELL TYPES!!! 20 POINTS AND MARKED BRAINLIEST!!

How does the number of valence electrons in sodium (Na) compare to the number of valence electrons in calcium (Ca)? A. Na has two fewer valence electrons than Ca. B. Na and Ca have an equal number of valence electrons. C. Na has one more valence electron than Ca. D. Na has one fewer valence electron than Ca.

What is Chargaff's Rule?

16. Which phenomenan shows the effect of light dispersion? *​

which statement about enzymes is true?

A. An enzyme functions to decrease the rate of a chemical reaction.
B. Enzymes are proteins that function as catalysts in nonliving things.
C. Each enzyme can catalyze many different biochemical reactions.
D. Enzymes and substrates fit together like a lock and key.​

Please help a kiddoe out I will mark brainliest
Do you think the genetic disorders you identified in part A or B would appear in a person’s DNA fingerprinting profile? Explain your reasoning.

A student observes the model and claims that the total mass of the reaction is conserved. Is the student's claim correct? Why or why not? A No, because the arrangement of atoms is different in the reactants and products. B Yes, because the reactants and products are made of atoms of the same elements. C Yes, because the number of atoms of each element is the same on both sides of the equation. D No, because the total number of atoms in products is greater than the total number of atoms in reactants.

1. How did Hooke's work contribute to the cell theory?

What is one of the roles of the enzyme, DNA Polymerase, during DNA replication?
Answer
F
It degenerates (breaks down) the old DNA strand once the new strand is made
G
It uses a strand of DNA to build a new strand of RNA
H It joins nucleotides to synthesize a complementary strand of DNA
J
It unzips the two strands in a molecule of DNA to begin replication

9. Which is not associated with areas of karst topography? A caverns B sinkholes C flowing rivers D sinking streams​

Which statement is NOT true about fluids?
A. all can flow
B. liquid and gases are included
C. some take the shape of their container
D.particles move easily past each other

In a strand of DNA, if the percentage of thymine is 30%, what would the percentage of cytosine in the same DNA strand be?

a partial food web is show below

Angiosperms are the most common plant that you see every day. Describe what characteristics make them so successful.

Question 5 of 10
Psychiatrists and psychologists often refer to a manual that details different
mental disorders. Although it is controversial, it is still used by almost
everyone. This manual is called the:
A. TAT
B. SPT.
C. DSM
D. REM.

Please help me need this before 4:30pm
Atomic Number = the number of __________________________ in an atom.

should a business owner be more interested in making money or doing what they are passionate about?why?​

If we want to investigate bacteria, we're going
to have to figure out how to keep them alive. If
we were doing this experiment in class, how
would keep the bacteria we find alive when we
bring samples back to our classroom?