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
IrinaVladis [17]
3 years ago
8

what is the bodys first line of defense against pathogens? A white blood cells B mucous membranes C lymph nodes D red blood cell

s
Biology
2 answers:
True [87]3 years ago
7 0
The body's first line of defense against pathogens are mucous membranes, as they prevent bacteria from entering the body. Hope this helps!
Gwar [14]3 years ago
7 0
Hello there.

<span>What is the bodys first line of defense against pathogens? 

</span><span>A) white blood cells </span>
You might be interested in
Which of these is referred to as the " jumping gene" because it can cause mutations as it moves DNA around and mixes DNA up in a
Mazyrski [523]

Answer:the correct answer is b

Explanation:

3 0
2 years ago
Which statement is not true? A) Lipids are found in cell membranes. B) Lipids are soluble in organic solvents. C) There are many
alina1380 [7]

Answer:

D.all lipids contain fatty acids.

Explanation:

A.Lipids are fats, like oil, that are insoluble in water. ... The most abundant class of lipid molecule found in cell membranes is the phospholipid. The phospholipid molecule's polar head group contains a phosphate group. It also sports two nonpolar fatty acid chain groups as its tail.

B.The simplest definition is a lipid as any molecule that is insoluble in water and soluble in organic solvents. Most lipids are soluble to some extent in organic solvents such as hexane, ether, chloroform or benzene. They constitute a complex collection organic compounds that include fatty acids, (A,D, E and K).

C.There are two major types of lipids- simple lipids and complex lipids. Simple lipids are esters of fatty acids with various alcohols. For eg., fats and waxes.

D.Not all lipids have fatty acids. The operational definition of a lipid is a biomolecule is that is sufficiently hydrophobic to be more soluble in an organic solvent than in water. The common theme to their structures is a high percentage of hydrocarbon character.

E.Most lipid hormones are steroid hormones, which are usually ketones or alcohols and are insoluble in water. Steroid hormones (ending in '-ol' or '-one') include estradiol, testosterone, aldosterone, and cortisol. ... Amino acid-derived hormones and protein hormones are water-soluble and insoluble in lipids.

7 0
3 years ago
A new mutation arises in one person on the island of Kiribati (human population size 100,000). Assuming this particular mutation
tatuchka [14]

Answer:

0.999999 ≈ 1

Explanation:

In a population ( N ) there is the presence of 2N alleles in the population also chance of fixation can be expressed as ; 1/ 2N

Therefore the probability that the mutation will be lost due to genetic drift

= 2N - 1 / 2N ---- ( 1 )

given that ; N = 100,000

back to equation 1

P ( losing mutation due to genetic drift ) = ((2*100,000) - 1 )) / ( 2* 100,000 )

= ( 200,000 - 1 ) / 200,000

= 0.999999 ≈ 1

5 0
2 years ago
PLEASE HELP I AM DYING
yanalaym [24]

it would be 35 degrees if u could do brainliest for me please

4 0
3 years ago
Please help ASAP, Im pretty sure I know the answer, but I'd like a second opinion.​
FinnZ [79.3K]

Answer:

c

Explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • What is the purpose of the electron transport chain in the thylakoid membrane?
    11·1 answer
  • The study of the changes in form that occur between conception and physical maturity is called
    6·1 answer
  • Do you think small children and adults should have the same diet?explain reasoning?
    15·1 answer
  • Which situations would involve classification? Select three options.
    10·1 answer
  • A scientist conducts an experiment to test a hypothesis. The experiment confirms that the hypothesis could be true. When will th
    12·2 answers
  • The water cycle occurs almost exclusively in which layer of our atmosphere?​
    12·2 answers
  • Which of the following is a characteristic of dna
    6·2 answers
  • Which type of plate boundary is that?
    8·2 answers
  • Compare asexual reproduction to sexual reproduction. in your comparison, be sure to include
    14·1 answer
  • Lab: Owl Pellets 2. What procedure did you use to complete the lab?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!