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
barxatty [35]
3 years ago
7

A good model of the cell membrane would be

Biology
1 answer:
mixer [17]3 years ago
6 0

C. A wall of stones and mortar

This would act as a model describing the cell membrane.

Explanation;

A cell membrane is made up of a phospholipid bilayer with embedded proteins.

A cell membrane hold the different components of the cell together and to protect it from the environment outside the cell. It acts as a boundary between the inside environment and the outside environment of a cell.

It regulates the materials that enters and exits the cell; through selective movement of substances in and out of the cell.

You might be interested in
What types of cases are best investigated with survey rather than an experiment
Alik [6]
What are people's favorite colors? How does the color purple make people feel? Something like that
7 0
3 years ago
Read 2 more answers
What happens to urchins if the oxygen percent concentration drops too low for an extended period of time?
makkiz [27]

Answer:

Since sea urchins are picky, they are used as indicator organisms in public aquariums to determine if the system is functioning properly. This is because they are very "picky" about water quality. If the water is contaminated, the sea urchins will be the first to show signs of stress, spines laying down or falling off. Do use an aquarium filter and do clean up the day after feeding. Any metal exposed to the seawater will corrode and poison the tank. A dying sea urchin will often spawn out and rot out, causing the others in the tank to spawn and die as welll.

Explanation:

7 0
2 years ago
Plzz hhheeeelllllpppp mee! Which great scientist laid the ground work for the scientific method we use today?
zepelin [54]

Answer: b

Explanation:

if thats wrong then its c, hope this helped

7 0
3 years ago
Read 2 more answers
4. A polypeptide has the following amino acid sequence: Met-Ser-Pro-Arg-Leu-Glu-Gly In the mutant below, indicate the type of mu
MatroZZZ [7]

Answer:

4. c. Deletion/ frameshift mutation

5. a. Tyr Tyr Asp Ser Gly

6. A frameshift occurred which altered the identity of the amino acids following the initiator 6. methionine, but not the length of protein Q.

Explanation:

4)

A single base pair at the first position of the Arg codon i.e. CGA has been deleted. Due to the deletion, the reading frame has shifted one nucleotide backwards, altering the amino acid sequence of the protein.

5)

The genomic DNA sequence is 5'-ATG ATA CTA AGG CCC-3'. Therefore, the complementary mRNA will be 5'-UAC UAU GAU UCC GGG-3'. According to the genetic code, this mRNA sequence encodes the following amino acid sequence: Tyr Tyr Asp Ser Gly

6)

The wild type DNA sequence is:

5'-ACUGUAAUGGAGUCAGAUGAUGCAUUAAGGAGAAAUUGAAAUAAA-3'

The mutant i.e. mRNA with the added G will be

5' ACUGUAAUGGGAGUCAGAUGAUGCAUUAAGGAGAAAUUGAAAUAAA-3'  

This is a single base pair insertion and frameshift mutation that shifts the reading frame one base pair forwards. The codon that was originally GAG coding for glutamic acid (Glu) gets converted to GGA that codes for glycine. Therefore, the amino acid sequence has been altered but the polypeptide chain will still have 13 amino acids.

6 0
3 years ago
Stabilizing force for the structure and stability of double-stranded nucleic acids?
Softa [21]
I need more points. That's why I am awnsering this, sorry.
8 0
3 years ago
Other questions:
  • Suppose you discover two interesting rare cytological abnormalities in the karyotype of a human male. (A karyotype is the total
    7·1 answer
  • A biologist develops a new drug that seems to dramatically slow the onset of symptoms resulting from HIV infection. Close monito
    15·1 answer
  • Increase of greenhouse gases, due to human activity, is melting sea ice at the poles. This causes changes in climate. Name three
    6·1 answer
  • I WILL DUB THEE BRAINLIEST!! 50 points! Which of the following statements BEST describes the importance of carbon in the cell? S
    11·1 answer
  • Complete the following sentences about prokaryotes. Anaerobic prokaryotes use ___to obtain energy. Archaea and eubacteria are pr
    12·2 answers
  • Which of the following is a correct conversion factor? 1 foot = 12 cm 1 mm = 0.1 cm 1,000 kg = 1 decigram 1 ml = 10 L
    6·1 answer
  • Natural selection select one:
    6·1 answer
  • The Sun is the primary source of energy that drives all the biogeochemical cycles on Earth. Which statement best describes how t
    11·2 answers
  • What do we mean when we say DNA strands run in opposite directions? A. They are antiparallel to each other. B. They are parallel
    5·1 answer
  • What is the mass of the green cone on gizmos
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!