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
tiny-mole [99]
3 years ago
5

Which factor determines whether a molecule can cross a cell membrane

Biology
2 answers:
Marizza181 [45]3 years ago
6 0
  <span>if a molecule is too large it cannot pass. also it depends on the concentration of a specific substance inside the cell. similarly, if a molecule is polar it cannot penetrate the phospholipid bilayer. 

there are proteins that work as channels and pumps that allow these molecules to pass

</span>
Bingel [31]3 years ago
3 0

Answer:

Polarity

Explanation:

Apex

You might be interested in
How will wolf emigration affect a grassland ecosystem that supports rabbits, the wolf's primary prey?
GuDViN [60]
It’s not A

I think it’s D
4 0
2 years ago
___________is height above sea level.<br> Air Pressure<br> Altitude<br> Density<br> Molecules
Anna35 [415]

Answer:

the correct answer is altitude believe me I got that one right from the quiz

7 0
3 years ago
Read 2 more answers
A 2-year-old child with developmental dysplasia of the hip has a spica cast applied. the mother asks the nurse how to keep the c
WITCHER [35]

Managed easily with lotion or oil. Some degree of discomfort is expected after cast application. Warm toes indicate intact circulation to the lower extremities. Peeling skin (desquamation) is the result of inadequate skin care. The child should receive a cool mist because it facilitates reduction of mucosal edema.

3 0
3 years ago
Please I need help with questions 68 and 69 and it’s very hard and I’m struggling with it and if you need to see the picture big
shepuryov [24]
68. Photosynthesis
69. Sunlight is absorbed
8 0
3 years ago
Much like a ball of yarn is made of strands of strings, this x- shaped structure is made of what?
kari74 [83]

Answer:

The X-shaped structure is made of strands of DNA.

Explanation:

The chromosomes are thread-like structures located in the nucleus of each cell in the body. In a human cell, there are 23 pairs of chromosomes found in the nucleus. Each chromosome is made up of strands of DNA tightly coiled many times around proteins called histones which gives support to its structure.

The chromosomes are X-shaped and are observed only in a cell undergoing division by mitosis or meiosis. Each of these X-shaped chromosomes consists of two identical sister chromatids. The sister chromatids are connected to each other by a region of the chromosome called the centromere. The centromere are located around the depression point of the chromosome which divides the sister chromatids into two regions: long arm called the q arm and a shorter arm called the p arm. During mitosis, spindle fibers attach to this region, and they eventually pull the sister chromatids apart to form two separate chromosomes, one for each daughter cell.

4 0
3 years ago
Other questions:
  • Which of the following are greenhouse gases? oxygen water vapor carbon dioxide nitrous oxide methane
    12·2 answers
  • Which is a characteristic of unsaturated fats? they easily stack on top of each other. they come from plant steroids. they make
    9·2 answers
  • What is the difference between a tissue and an organ system? an organ system includes tissues. tissues are composed of organ sys
    10·1 answer
  • Which of the following is not a characteristic of all living things?
    7·1 answer
  • Which of these is NOT an aquatic reptile group? plesiosaurs pterosaurs ichthyosaurs nothosaurs
    11·2 answers
  • What happens when the body uses its energy stores to provide cellular energy during a time of fasting, when there is not enough
    6·2 answers
  • Which of the following is NOT an argument used in favor of genectically modified food?
    10·1 answer
  • As habitats change, populations of northern pine trees that were once separated can now exchange pollen. This exchange of genes
    7·1 answer
  • which pattern of inheritance is responsible for a wide range of phenotypes that result from Individual organisms having many dif
    8·1 answer
  • Select the organs that are a part of the respiratory system.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!