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3 years ago

Briefly explain what clues to look for to tell if a cell is in each of the following phases of mitosis:

Biology

1 answer:

k0ka [10]3 years ago

6 0

Answer:prophase----the chromosomes shorten and thicken.the nuclear membrane has open up and the nucleolus has disappeared

Metaphase----the chromosomes migrate to the central plane of the cell and attach to the spindle fibres microtubules

Anaphase---the chromatids of each chromosomes part and move towards opposite poles of the spindle as the spindle fibres shorten

Telophase----the chromatids are in the polar end of the spindle .the spindle breaks down,the centrioles replicate,the nuclear membrane is reformed,the chromosomes gradually uncoil.

Explanation:

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Ivan

A protist has a nucleus inside of it to make it a Eukaryote, if it had no nucleus it would be consider a Prokaryote

8 0

3 years ago

Which statements correctly describe mutations in gametes and mutations in somatic cells?

ASHA 777 [7]

A mutation is a rare, accidental or induced modification of genetic information (DNA or RNA sequence) in the genome.

The consequences of a mutation vary according to the part of the genome affected. A mutation is said to be hereditary if the mutated genetic sequence is passed on to the next generation.

In multicellular animals, germline mutations can be transmitted to offspring, whereas somatic mutations do.

Somatic mutations do not affect cells intended for reproduction, so they are never hereditary:

* Post-zygotic mutations are the mutations that appear in the egg after fertilization. They are rarer and are expressed as mosaic in the individual concerned (the mutation will be present only in the daughter cells originating from the mutated embryonic cell).

* Mutations can appear throughout life on the DNA of any cell; they are then transmitted to the line of the daughter cells. These can, in some cases, become tumor cells and then form cancer.

7 0

3 years ago

What is The Technical Term for a lake created by a dam

insens350 [35]

Answer:

RESERVOIR IS TECHNICAL NAME.

6 0

3 years ago

In the world of purple people eaters, one eye (E) and one horn (H) are dominant traits. Purple people eaters

Tju [1.3M]

Answer:

Explanation:

Male ; EeHh

Female ; EeHh

Then,

possible gametes for each = EH / Eh / eH / eh

where,

EH Eh eH eh

EH EEHH EEHh EeHH EeHh

One eye One eye One eye One eye

One horn One horn One horn One horn

Eh EEHh EEhh EeHh Eehh

One eye One eye One eye One eye

One horn Two horn One horn Two horn

eH EeHH EeHh eeHH eeHh

One eye One eye Two eye Two eye

One horn One horn One horn One horn

eh EeHh Eehh eeHh eehh

One eye  One eye  Two eye  Two eye 

One horn Two horn  One horn Two horn 

Therefore,

One eye, one horn:One eye, two horn:Two eye, one horn:Two eye,two horn

is,

9 : 3 : 3 : 1

This ration proves that the above working is correct and is dihybrid cross.

6 0

3 years ago

Help please!........................................................

bogdanovich [222]

Answer:

The correct order would be

Glucose
ATP→ADP
H₂O
Pyruvate
CO₂

Explanation:

Following reactions occur in Glycolysis and Kreb's Cycle

Phosphorylation of Glucose- In the first step of glycolysis, Glucose is converted into Glucose-6-Phosphate using 1 ATP molecule by Hexokinase enzyme. One phosphate group from ATP is attached to glucose by the enzyme, thus forming ADP.
Dehydration- In the ninth step of Glycolysis, each of two molecules of 2-Phosphoglycerate are converted to Phosphoenol Pyruvate, by Enolase enzyme, releasing two H₂O molecules.
Formation of Pyruvate- In the last or tenth step of Glycolysis, each of two molecules of Phosphoenol Pyruvate are converted to Pyrutave using an ATP by the enzyme Pyruvate Kinase.
Oxidation Of Pyruvate to Acetyl-CoA- Before the Kreb's Cycle starts, the Pyruvate molecule obtained from the Glycolysis undergoes oxidative decarboxylation producing Acetyl-CoA and release of CO₂ and NADH.

4 0

3 years ago