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
valina [46]
3 years ago
12

What’s the difference between heal cells and human cells?

Biology
1 answer:
Vesnalui [34]3 years ago
3 0

Answer:

HeLa cells, like many tumours, have error-filled genomes, with one or more copies of many chromosomes: a normal cell contains 46 chromosomes whereas HeLa cells contain 76 to 80 (ref) total chromosomes, some of which are heavily mutated (22-25), per cell.

Explanation:

You might be interested in
How can we bring back lost nutrient   in   the soil without direct application   of   fertilizer?​
bazaltina [42]

Answer:

Explanation:

Crop rotation

Rotation of crop is important to help conserve nutrients that are available in the soil and prevent total use up of the nutrients. The same type of plants all year round on the same soil keeps on draining the land of the same nutrients needed for their growth. Rotation of different can help maintain soil nutrients level as some crop fixes nutrients in the soil.

Natural mulching

The use of cover cops as mulch helps protect the soil and allows for retention of nutrients. When cover crops are harvested the leaves can be turned back into soil to release nutrients that are stored up in the plant part.

Composting is the process of decomposing organic matter this could include animal waste such as dung,leaves both green and dead, kitchen. This waste are stored up, little water is added to moist and then allow to decompose it can be mixed together after few days to aerate after. After decomposing to form compost it can be added to the soil. It is usually rich in nutrients.

4 0
3 years ago
Which of the following best describes an aspect of a membrane's molecular structure that causes it to be selectively permeable?
atroni [7]

Answer:

<u>d. Transport proteins within the membrane serve as a tunnel for molecules to enter the cell. </u>

<u />

Explanation:

Solutes are typically moved across the cell through either passive or active transport. The cells, surrounded by a bilipid layer or plasma membrane is amphiphlic- its polar, hydrophilic lipid heads face outwards, while their non-polar hydrophobic lipid tails face inwards towards each other.

While lipid-soluble molecules move across the layer easily, it is also difficult for charged and also large molecules to move across its surface, into the cell. Transmembrane channels, <u>embedded within the membrane</u>, help to maintain selective permeability as transport proteins, pores and gated channels. Simple diffusion happens as a method of passive transport in cells through plasma membranes.

The solutes travel through the plasma membrane in the process of diffusion from regions of high concentration to regions of low concentration; this occurs without the use of energy. <u>Molecules moving against their concentration require active transport mechanism to cross the membrane</u>.

3 0
3 years ago
What explanation accounts for the formation of sunspots?
Harman [31]

Answer:

The curvature of the magnetic fields near the sun's equator creates pockets of the photosphere that aren't warmed by convection.

Explanation:

Hope it helps!

6 0
3 years ago
Read 2 more answers
What surrounds the cell and controls the movement of substances in and out
Nonamiya [84]

Answer:

The plasma membrane is made up by a phospholipid bilayer with embedded proteins that separates the internal contents of the cell from its surrounding environment. Only relatively small, non- polar materials can easily move through the lipid bilayer of the plasma membrane.

Explanation:

7 0
2 years ago
Beaks in African black-bellied seedcracker finches are small or large, but not intermediate in size. This is an example of
alexdok [17]

Answer:

disruptive selection

Explanation:

Disruptive selection may be defined as a type of a natural selection which selects against some average individual in a given population. These makeup of such a type of the population shows the phenotypes of both the extremes of characteristics but they have very few individuals in the middle.

Disruptive selection is also known as diversifying selection.

In the given context, the beaks of an African seedcracker finches may be small or may be large but they are not of the intermediate size. Such a selection is known as disruptive selection in species.

4 0
3 years ago
Other questions:
  • SOMEONE HELP ASAP!! 20 POINTS!!
    6·2 answers
  • Which feature of sugarcanes suggests that they are stems?
    5·1 answer
  • The reapeating units (monomers) of dna are called what?​
    15·2 answers
  • Unlike mitosis, meiosis in male mammals results in the production of
    13·1 answer
  • Where does photosynthesis occur?
    13·2 answers
  • What do you expect the DNA sequences of the three frogs to look like?
    11·2 answers
  • What is the purpose of transcription and translation?
    15·1 answer
  • What is occurring in this equation? ATP + H2O --&gt; ADP + Pi + energy
    14·1 answer
  • Please help, This is a science sheet for get my grade up.
    9·1 answer
  • Which of these is a disadvantage of using natural gas?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!