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9966 [12]
3 years ago
11

Eggs have species specific receptors on their outer surfaces to which sperm must attach if fertilization is to occur

Biology
1 answer:
mafiozo [28]3 years ago
6 0
The  question is; would a drug that binds irreversibly to these receptors be an effective contraceptive in mammals?, the answer is;Yes; because if the receptors are blocked the sperms will not be able to penetrate the zonal pellucida of the egg.  Contraceptives prevents pregnancy by interfering with the normal process of ovulation, fertilization, and implantation.
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Many foods, for example, bacon and salt cod, are preserved with high concentrations of salt applied to the outside of the meat.
Rama09 [41]

High concentrations of salt can inhibit the growth of bacteria by causing the bacteria to shrink because water leaves the bacterial cell.

<h3>What is a Hypertonic solution?</h3>

This is defined as a type of solution which has a large amount of particles which are dissolved thereby making it have a high concentration.

High concentrations of salt applied to the outside of the meat means it is hypertonic and therefore causes the bacteria to shrink because water molecule leaves the cells thereby destroying their structure preventing metabolic reactions from occurring which leads to their death.

Read more about Hypertonic solution here brainly.com/question/24566077

#SPJ1

8 0
1 year ago
3.Why should a model of the carbon cycle include the burning of fossil fuels?(1 point)
user100 [1]

Answer:

Burning fossil fuels moves carbon from the geosphere to the atmosphere.

Explanation:

  • Fossil fuels such as coal, petroleum and natural gas are produced and stored in the geosphere. i.e. the part of the Earth that includes the Earth's interior, landforms, rocks and minerals.
  • Fossil fuels, extracted from the geosphere are burned to generate energy.
  • Combustion of fossil fuels releases the stored carbon into the atmosphere in the form of carbon dioxide.
5 0
3 years ago
In which of the following ways is DNA replication similar to transcription?
SVEN [57.7K]

b) cytosine pairs with guanine in both. literally in dna replication,

<em>adenine goes with thymine</em>

<em>thymine goes with adenine</em>

<em>guanine goes with cytosine</em>

<em>cytosine goes with guanine</em>

hope this helps mina! :) <3

6 0
3 years ago
Read 2 more answers
Which is a advantage of water’s heat capacity ?
Lerok [7]
An advantage of water's heat capacity is that it uses more energy to cause the substances to boil.

4 0
3 years ago
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Please help (only comment the answers cause I can't do this alone it's hard)
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2 years ago
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