Which statement best describes the role of gene expression in cells?Question 1 options:

Cells destroy the DNA of genes that they do not use.

When cells divide in mitosis, they pass on only the genes that are required.

To become specialized, cells need to control the production of proteins coded for in their DNA.

All genetic information in a cell's DNA is fully expressed at all times.

Answers

Answer 1

Answer: The answer is To become specialized, cells need to control the production of proteins coded for in their DNA.

All genetic information in a cell's DNA is not fully expressed at all times. On the contrary, in different cell lines, different DNA segments are expressed at different times. Some genes are active in unspecialized cells and later deactivate, some are activated only in specialized cells, for example. These are facultative genes which are active when needed, unlike constitutive genes which are expressed continually. Therefore, to become specialized, cells need to control the production of proteins coded for in their DNA. DNA segments, however, remain in cell and are not destroyed. Also, during the mitosis, all genes are passed, not only required genes.

Answer 2

Answer:

Answer:

To become specialized, cells need to control the production of proteins coded for in their DNA.

Explanation:

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Which is produced when an egg and a sperm unite during a plant’s life cycle?

Answers

Answer:

Zygote

Explanation:

As a result of meiosis in the male and female sex organs of a plant, male and female gametes or male and female sex cells produced respectively. Gametes are universally haploid. Male and female gametes fuse or fertilize to form a diploid zygote. A zygote or fertilised egg is a one-celled structure which later develops into an embryo.

Answer:

it's C. Zygote

Explanation:

I've taking the test/quiz for my biology class on Edge, and that was the correct answer that i got.

What is the formula for photosynthesis

Answers

The formula of photosynthesis can be written as shown below.
6CO2 + 6H2O -------------> C6H12O6 + 6O2
Sunlight
In the above equation,
CO2 = Carbon Dioxide
H2O = Water
C6H12O6 = Glucose
O2 = Oxygen.
Carbon dioxide and water react together in presence of sunlight to produce glucose as food for the plant and oxygen that gets released in the air.Plantsrequire the process of photosynthesis for their own survival They absorb thecarbon dioxide from the air and release the oxygen that is required for thesurvival of most living things.

Photosynthesis can be represented using a chemical equation.The overall balanced equation is...6CO2 + 6H2O ------> C6H12O6 + 6O2
Sunlight energy Where: CO2 = carbon dioxide
H2O = water
Light energy is required
C6H12O6 = glucose

o2=oxigen2=oxigenn

Minerals form from magma in predictable patterns in a process know as

Answers

Minerals form from magma in predictable patterns in a process known as Bowen's reaction series.

Bowen's reaction series is the general model for the formation and the crystallization sequence of magma as the cooling process occurs. Bowen's reaction series was the idea of Norman L. Bowen. The series explains that minerals crystallize differently at certain temperatures as they cool. It also states why specific types of minerals are found together and why others are almost never connected with one another.

Bowen's reaction series

How are cast formed?

Answers

Answer:

Casts are cylindrical bodies formed either in the distal convoluted tubules or the collecting ducts of the kidney. Since the walls of the tubule act as a mold for cast formation, the width of the tubule determines the width of the cast.

Explanation:

This is how cast formed.

Casts are cylindrical bodies made by either in the distal convoluted tubules or collecting ducts of the kidney.

According to base-pairing rules for dna, adenine pairs with ___ and guanine pairs with ____

Answers

Adenine pairs with Thymine
Guanine pairs with Cytosine.

Why does the predator line lag behind the prey line?

Answers

The prey are the food source. When the prey numbers are plentiful, there comes a period of time when the predator begins producing offspring to capitalize on the abundant food source. Offspring cant survive unless there is plenty of available food.

Other Questions

The ____________theory of inheritance states that genes are location on _________, which undergo segregation and independent assortment.

A mutation changes the DNA sequence AAGCCTGGCAAT to the new sequence AAGCCTGCGCAAT. What kind of mutation has occurred? A. deletion B. insertion C. duplication D. substitution

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which is produced when an egg and a sperm unite during a plants life cycle ? A.spore B.meiosis C.zygote D.gametophyte