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
timama [110]
3 years ago
7

This is for biology 1 please answer the question.

Biology
1 answer:
san4es73 [151]3 years ago
5 0

Answer:The primary function of the plasma membrane is to protect the cell from its surroundings. Composed of a phospholipid bilayer with embedded proteins, the plasma membrane is selectively permeable to ions and organic molecules and regulates the movement of substances in and out of cells.

Explanation:

You might be interested in
How can a mother with the B blood type, having A antibodies in her plasma, carry a baby full-term that inherits the A blood type
DanielleElmas [232]

Answer:

The mother can carry a full-term baby with A blood type because the mother's blood does not mix with the baby's blood, so the mother's immune system does not activate attacking the baby.

Explanation:

The reason why a mother with B blood type and A antibodies in her system can carry a full-term pregnancy is thanks to the placenta. The placenta is a shared organ between the mother and the baby. Its function is to protect the baby and produce the necessary exchanges of nutrients and wastes between the maternal blood and the baby's blood. As the two types of blood are separated, and they never get in contact during pregnancy, the immune system of the mother does not recognize the baby as a treat. The mother can have A antibodies in her plasma due to a previous pregnancy where during delivery, the two types of blood mixed, also it can be due to any contact with the A blood type. When the foreign blood enters the body, the immune system forms antibodies for it.

4 0
3 years ago
A person breaks a bone and has it set and put in a cast, but it does not heal. What would be the best thing for the doctor to in
notsponge [240]

Answer:

The osteoblasts, which should have been building the new bone

Explanation:

Bones are the one of the types of connective tissues and have hard extracellular matrix. Osteoblasts are the cells that serve in formation of extracellular matrix of bones as these cells secrete collagen fibers and inorganic salts present in the matrix of bone. Hence, if a bone is not able to heal after fracture, osteoblast cells should be checked for their activity.

6 0
3 years ago
Read 2 more answers
What is the medical term for the process or procedure that destroys or inhibits disease-causing microorganisms to prevent infect
Simora [160]

Answer: Sterilization.

Explanation:

Sterilization is the process that kills, or deactivates all forms of life so then a product is considered free of viable microorganisms. This process must be designed, validated and carried out to ensure that it is capable of eliminating the microbial load of the product.

Since sterility cannot be demonstrated without causing the complete destruction of the products, <u>sterility is considered when the probability of a product being contaminated is acceptably remote.</u> A critical product is considered sterile when the probability of a microorganism being present in an active or latent form is equal to or less than 1 in 1,000,000 (sterility safety factor 10^-6).

Agents that kill microorganisms are called microbicides or more commonly called "germicides". If the agent kills bacteria, it is called a bactericide. And if it kills fungi, then it is called a fungicide. It is important to consider than <u>after an exposure of the sterilized object to the air or its surroundings, it will have become contaminated again with microorganisms.</u>

Examples of sterilization include physical methods and chemical methods. Physical methods include:

  • Wet heat (in steam autoclave)
  • Dry heat (in sterilization oven)
  • Radiation (gamma radiatio, electron beam, X-ray, ultraviolet, microwave, white light)

Chemical methods include a variety of chemicals in liquid and vapor form, for example:

  • Hydrogen peroxide
  • Chlorine dioxide
  • Ozone gases
  • Ethylene oxide
  • Propylene oxide
  • Peracetic acid
5 0
2 years ago
A different DNA ladder from NEB (Cat #N3200L) comes as 500 uL of a 1000 ug/mL solution and is not pre-mixed with the 6 X DNA loa
JulijaS [17]

Answer:

4 ul Loading Buffer + 19.70 ul dH2O + 0.30 ul DNA Ladder

Load 12 ul on the gel.

Explanation:

DNA Ladder concentration = 1000 ug/ml

1000 ug DNA in 1 ml DNA Ladder solution →    150 ng DNA = 0.15 ug DNA in..... 0.00015 ml = 0.15 ul DNA Ladder solution

6x DNA Loading Buffer → it has to be diluted by an equal volume 6 times (1 ul LB + 1 ul distilled H2O)

An appropriate volume to load on an average agarose gel is 12 ul, so:

2 ul Loading Buffer + 9.85 ul dH2O + 0.15 ul DNA Ladder = 12 ul

But since 0.15 ul is a very small volume and mistakes could be made while measuring it, let's make double:

4 ul Loading Buffer + 19.70 ul dH2O + 0.30 ul DNA Ladder = 24 ul

And load half of that solution (12 ul) on the gel.

5 0
3 years ago
Relative to prokaryotic cells, eukaryotic cells are usually ______. Relative to prokaryotic cells, eukaryotic cells are usually
liraira [26]

Answer:

Relative to prokaryotic cells, eukaryotic cells are usually larger and more complex.

6 0
3 years ago
Other questions:
  • Viewed through a microscope, a sample of natural water is seen to contain sphere-shaped and rod-shaped bacteria. Which of the fo
    8·1 answer
  • What is the foundation for the different climates around the world
    14·1 answer
  • What are some of the majors differences in fish that make a living as "lungers" versus "cruisers"?
    9·1 answer
  • If a material conducts heat easily it is a good what
    9·1 answer
  • On the Galapagos one of the members of the founder species of finches was born with a larger beak than the others. This advantag
    12·2 answers
  • A biologist counts the number of zebras in a population each year and notices an increase in the zebra population. Which describ
    7·1 answer
  • A rock weighs 33.6 N on Planet X and 49 N on Earth. What is g on Planet X?
    14·1 answer
  • Describe at least one advantage and one disadvantage of choosing a digital photo album rather than a physical one
    11·1 answer
  • B<br> H<br> C<br> G<br> E<br> F<br> Which organelle is labeled H?
    9·1 answer
  • Label the diagram below of the root cross section<br> Plzzzzz help ASAP
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!