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sukhopar [10]
3 years ago
9

Which of the following statements about the smooth endoplasmic reticulum is/are correct?

Biology
1 answer:
Vlada [557]3 years ago
8 0

Answer:

  • Liver cells are abundant in SER.  
  • The testes and ovaries are tissue types whose cells are abundant in SER.
  • Cholesterol is made in the SER.
  •  Phospholipids are synthesized from cytosolic water soluble precursor molecules.  

Explanation:

This is because liver cells contain enzymes that metabolize various lipid-soluble compounds.

This is because testes and ovaries produce steroid hormones (cholesterol is the precursor for their synthesis).

ER is the organelle at which all membrane lipids are synthesized.

Phospholipids are the main lipids that are the main structural components of the cell membrane. They are synthesized on the cytosolic side of the ER membrane, from water-soluble cytosolic precursors.

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In a study of genetic variation of the Graceland gene, a researcher finds that there are two alleles in a population. In a large
Licemer1 [7]

Answer:

Option 1, No. The highest frequency of heterozygotes under Hardy-Weinberg equilibrium is 0.5

Explanation:

As per Hardy Weinberg’s equilibrium principle, the maximum frequency of heterozytotic individuals occur only when half of the population is dominant and recessive homozygous.  

In other way when the sum of frequency of dominant and recessive species is equal to 0.5, only then the frequency of heterozygotes is maximum which in any case would not be higher than 0.5.  

Hence, option 1 is correct

7 0
3 years ago
If there is an excess of reactive oxygen species (ross) in a system, where would the problem least likely be found?
serious [3.7K]

This condition is known as a super oxide in which mutated enzyme extremely functional because it helps in production of cells .

when unstable molecules that contains oxygen and that easily react with other molecules in the cells. a build up of reactive oxygen species and cells causes damage of DNA ,RNA & protein ,which cause cell death.

super oxide refers various toxic oxygen containing free radicals such as monovalant anion O2 (negative) or that compound containing potassium super oxide KO2. reactive oxygen can cause damage to the basic building block of the cell. DNA damage can occur in the form of double stranded breaks as a result of reactive oxygen induced conversion of guanine to 8-oxo guanine.

To learn more about the cell death here

brainly.com/question/14263310

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7 0
1 year ago
Which statement explains why approximately half of an individual’s DNA sequence comes from each parent?A. A cell from one parent
Inessa [10]

Answer:

I believe the answer is D, if I’m wrong please tell me!

it might be a.

3 0
2 years ago
PLS HELP ME OUT WITH THIS ANSWER........ WHAT IS DINOFLAGELLATES ?
pishuonlain [190]

Answer:

These are single-celled MESOKARYOTES constituting the phylum DINOFLAGELLATA

Explanation:

Their populations are distributed depending on sea surface temperature,e.t.c.

Hope it helps.

4 0
3 years ago
Read 2 more answers
An example of an adaptation to prevent water loss in plants is
Masja [62]
One example can be the needle shaped leaves.

In desert areas, there are not much water sources. So basically, any drop of water is precious. To help prevent water loss of plants, for example cactus has very thin leaves that are needle shaped. Or some even don't have any leaves. This can reduce the surface area of leaves and thus reduce the water evaporating to the outer environment.

Another example also shown on cactus is that they have very thick waxy cuticle. It can also prevent water from evaporating from the stem. So that's why you see the stem is very shinny.
3 0
3 years ago
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