subject
Biology, 17.09.2021 15:20 DarcieMATHlin6217

Why is the cell membrane described as semipermeable? A) It allows all molecules to enter and exit the cell.
B) It is used in photosynthesis and allows sugars to enter the bloodstream.
C) It is see through and scientists can view all cell activities occurring within the cell.
D) It allows only certain molecules to enter and exit the cell.

ansver
Answers: 2

Another question on Biology

question
Biology, 21.06.2019 21:00
What two fields of study provide the core information that is used to classify organisms?
Answers: 2
question
Biology, 21.06.2019 23:00
Seen in some gram-positive bacilli, occurs when only the inner portion of a cell wall is deposited across the dividing cell. this new cross wall puts tension on the outer layer of the old cell wall. eventually, the outer wall breaks at its weakest point with a snapping movement that tears it most of the way around. the daughter cells can then remain hanging together almost side by side being held by a small remnant of the original outer wall. choose from the following statements the ones that correctly discuss reproduction using binary fission in a bacterial cell. select all that apply. view available hint(s) select all that apply. due to the stretching of the cytoplasmic membrane, both cells will contain a complete genome. each daughter cell will contain an equal number of organelles. the daughter cell will be a permanently smaller copy of the mother cell but will contain a complete genome. each daughter cell is an exact copy of the other, both genetically and morphologically
Answers: 1
question
Biology, 22.06.2019 09:30
Did the vinegar diffuse all the way to the center of any of the cubes? if so, which ones? what does this tell you about surface area-to-volume ratio and the diffusion rate?
Answers: 1
question
Biology, 22.06.2019 15:30
Which of the following statements is correct in hour our immune system responds to a potential pathogen? a. the adapted immune system will call on the innate immune system to destroy the pathogen. b. b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c. the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. d. the t-cells in the adapted immune systems are the first to recognize the pathogen vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a. antigen, antibody b. antibody, antigen c. antibody, antibiotic d. antibiotic, antibody
Answers: 1
You know the right answer?
Why is the cell membrane described as semipermeable? A) It allows all molecules to enter and exit...
Questions
question
Mathematics, 01.08.2019 21:10
Questions on the website: 13722367