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mafiozo [28]
4 years ago
10

How do guard cells work in leaves??

Biology
1 answer:
mamaluj [8]4 years ago
5 0
Guard cells work to open the stomata of plants leaves which fosters the exchanged
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Each cell that enters the cell cycle contains sister chromatids<br><br> a. True<br> b. False
Snowcat [4.5K]

Answer:

b. false

Explanation:

The cell cycle consists of three states: Interphase, Cell division (mitosis) and Resting.

Interphase is composed of phases G1, S and G2. during this state the cell replicates the genetic material of its chromosomes to prepare itself for cell division

In G1 the cell synthesizes mRNA and proteins that the cell will need during mitosis.

In S the cell replicates the genetic material of its chromosomes to prepare itself for cell division. At the end of this phase each chromosome is composed of two sister chromatides.

In G2 the cell grows and and more proteins synthesized  for mitosis.

Mitosis is the production of two daughter cells from a sinlge one. During the entire mitosis the chromosomes are duplicated in the cell until finally, the genetic material is distributed in two cells after cytokinesis.

According to the above, it can be seen that  the chromosomes in a cell that is in the cell cycle do not necessarily have sister chromatids. For example, chromosomes during G1 do not have sister chromatids.

3 0
3 years ago
The following relationships are known: CGG specifies Arginine, GGC specifies Glycine and GCG specifies Alanine. Based on your kn
shtirl [24]

Answer:

Arginine

Explanation:

A specific genetic code specifies a particular amino acid. One amino acid can be encoded by more than one genetic code.

When a particular amino acid is encoded by more than one genetic code, all the genetic code for that amino acid mostly share common first two bases and differ from each other in the last base. This allows the same tRNA with particular anticodon to read all the possible genetic code for that amino acid and to serve as a carrier due to wobble base pairing.

Given that code "CGG" specifies arginine, the code "CGA" should also specify "arginine" since both differ with respect to the last base only.

3 0
3 years ago
PLEASE HELP MEEEE
lyudmila [28]

Answer:

ate consumers

Explanation:

8 0
3 years ago
Read 2 more answers
What is an example of an elevation change
Olegator [25]

<em>For example,</em>

<em> consider a mountain whose summit is 5,000 feet (1,500 m) in elevation, but somewhere on the way up, the trail goes back down 250 feet (76 m). ... </em>

<em>If one hikes over five hills of 100 vertical feet each, the cumulative elevation gain is 5 × (100 feet (30 m)) = 500 feet (150 m).</em>

<em />

5 0
2 years ago
Which statement is not true about the Krebs Cycle?
krek1111 [17]

Answer:

It occurs out side of mitochondria-(the krebs cycle takes place in mitochondrial matrix

Explanation:

-(the krebs cycle takes place in mitochondrial matrix

5 0
3 years ago
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