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
diamong [38]
4 years ago
13

What facilitates passive transport across a cell membrane

Biology
2 answers:
bezimeni [28]4 years ago
5 0

The answer is concentration gradient.

vekshin14 years ago
4 0
The concentration of the cell and that of its environment
You might be interested in
Describe different ways that cell shape can be modified so that diffusion rate will be increased
ahrayia [7]
In order to increase the rate of diffusion of materials in and out of the cell, the following modification can be done to the cell:
1. the shape of the cell can be changed to one that has high surface area to volume ration, for example sphere.
2.The cell can also divide into two in order to increase the surface area to volume ratio. 
5 0
3 years ago
Explain the importance of the blood returning to the heart twice in one cycle​
a_sh-v [17]

Answer:

Explanation:

It is called a double circulatory system because blood passes through the heart twice per circuit. The right pump sends deoxygenated blood to the lungs where it becomes oxygenated and returns back to the heart. The left pump sends the newly oxygenated blood around the body.

6 0
3 years ago
If Huntington's disease is due to a dominant trait, shouldn't three-fourths of the population have Huntington's while one-fourth
4vir4ik [10]
This would be probably true if the assumption that all possible genotypic variations would be equally distributed (so we would have 25% HH, 25% hh and 2x 25 Hh). If this distribution would be true and Huntingtons disease really was a single gene dominant trait diesase, then yes, we could expect such a distribution in the population. 
8 0
3 years ago
Both parents are carriers of the allele for Albinism, or lack of the pigment melanin in skin or eyes. The equal probability of h
erma4kov [3.2K]

Answer:the condition is recessive, since the probability of appearing is 1/4.

Explanation:

Based on the information above,most of the children are dark skinned showing the dark skinned pigmentation being more dominant,thus the allele for albinism is recessive.

7 0
3 years ago
Why is tall grass prairie north america's rarest biome? historically it only occurred in a very tiny region of north america. be
OLEGan [10]
The answer is - because over 90% of this biome has been converted to agriculture.

This biome has been much larger before the development of the agriculture in this part of the USA, but because this biome provided large territories with deep fertile soil and predominantly lowland areas, people started using it for agriculture because it was the most suitable for that. So little by little, the biome was declining and more and more of it was becoming agricultural land.
5 0
3 years ago
Other questions:
  • What is the conclusion after investigating whether roots exert a pushing force strong enough to cause water to move up the stems
    9·1 answer
  • Observing the size of a herd of elephants that are all the same species would be an observation at the ___________ level.
    6·2 answers
  • How does a cell move a molecule that is too large for transport proteins?
    5·2 answers
  • Do <img src="https://tex.z-dn.net/?f=CO_2" id="TexFormula1" title="CO_2" alt="CO_2" align="absmiddle" class="latex-formula"> is
    10·1 answer
  • An organism like a green plant that can make its own food is called
    15·1 answer
  • If saffron made by yeast is a success and becomes available commercially in the u.s. as vanilla made from yeast is expected to,
    14·1 answer
  • Describe the biotic and abiotic features of the temperate grasslands
    9·1 answer
  • Were there any extinction events that occurred during the Cambrian period?? Help !!!
    12·1 answer
  • Clear selectic 5 po 14. A group of high school students wanted to use a decibel meter to test whether or not their classroom was
    11·1 answer
  • Which statement is correct about rough ER and smooth ER?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!