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
ollegr [7]
3 years ago
7

"cell structures is the permeability layer that lets only a selective number and type of molecules into the cell?"

Biology
1 answer:
Montano1993 [528]3 years ago
6 0

Answer: Cell membrane

Explanation:

The cell membrane has the ability to transfer the molecules from the exterior of the cell to the interior of the cell.

The cell membrane is semi permeable which means only selected molecules will pass through the cell membrane.

The molecules and substances that are synthesized inside the cell needs to be transported from inside to outside via cell membrane.

You might be interested in
What is the neurotransmitter released at motor end plates by the axon terminals
Ymorist [56]

In vertebrates, motor neurons release acetylcholine (ACh), a small molecule neurotransmitter, which diffuses across the synaptic cleft and binds to nicotinic acetylcholine receptors (nAChRs) on the cell membrane of the muscle fiber, also known as the sarcolemma.



8 0
3 years ago
How do small particles cross a cell membrane?
lora16 [44]
Active transport requires that the cell move engegy that it has obtained the food to move the molecule threw the cell membrane.The passive transport doesn't required as much energy for the molecule to move....
5 0
3 years ago
8. What base in DNA pairs with adenine?<br> A cytosine<br> Buracil<br> C thymine<br> D guanine
blondinia [14]

Answer:

C. thymine

Explanation:

Adenine pairs with thymine in DNA and pairs with uracil in RNA.

Hope it helps.

4 0
3 years ago
Condensation often gathers in the bottom of agar slants. why is it important in this exercise to limit condensation on plates bu
vekshin1
<h2>Answer:</h2>

Because condensation on the slant effects the bacterial growth in the test tube.

<h3>Explanation:</h3>
  • When agar is solidify in the test tube tilted, it takes a shape of slide on one side of the tube which is known as slat.
  • Slant is used instead of petri dishes because they provide more surface area for growth.
  • Water in the slat can invade the test tube, making agar unstable and the bacterial growth on the slat will be affected by moisture in bottom of slant.
  • In petri dishes, it is no big problem of moisture condensation.
7 0
3 years ago
WILL GIVE BRAINLIEST IF RIGHT
snow_lady [41]

Answer: The answer I got was Penicillin!

Explanation:

I know that marine biotechnology has came out with other antibiotics including squalamine and cephalosporin. This is an educated guess but based on the other answer choices Penicillin sounds more reasonable!!

6 0
3 years ago
Other questions:
  • What are osmoprotectants?
    13·1 answer
  • In bacterial genetics the term competence refers to a bacterium with ability to
    13·1 answer
  • Why is the word translation used for protein production?
    13·1 answer
  • I need help <br> explain mitosis
    6·1 answer
  • How did the temperatures in the nebula affect<br> development of planets within the disks?
    14·1 answer
  • A client who has ovarian cancer is to receive intravenous chemotherapy. Before the infusion, the nurse teaches the client how to
    10·1 answer
  • fossils have a species of bird are found in layer 3. Which layer is most likely to have organisms that lived at the same time as
    13·1 answer
  • Cold food should be stored at a maximum internal temperature of 41 degrees F or lower.
    7·1 answer
  • Describe how pollution can cause acid rain, and how acid rain affects the ecosystems of surrounding areas?
    8·2 answers
  • a potential cancer-causing gene coding for a protein with cell cycle control responsibilities is a(n) , and a gene coding for a
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!