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Sveta_85 [38]
1 year ago
5

Part B What are the strengths and weaknesses of the cell model?

Biology
1 answer:
matrenka [14]1 year ago
7 0

Answer:

strengths:The cell model shows all the process involved, and it's easy to understand, even if a person isn't familiar with the process

weaknesses: it doesnt show organelle or rna

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Two common metamorphic rocks that typically lack foliation are ________ and ________.
algol13
The two are Phyllite and schist
3 0
2 years ago
Proton pumps are used in various ways by members of every domain of organisms: Bacteria, Archaea, and Eukarya. What does this mo
evablogger [386]

Answer:

The correct answer is A and D

Explanation:

According to Russell's conception that lies in natural proton gradients. He states that Four billion years ago, alkaline fluids bubbled to produce mildly acidic oceans (As CO2 levels were about a thousand times higher, and it reacts with H2O to form carbonic acid, rendering the oceans mildly acidic). Acidity is just a measure of proton concentration,  higher in the oceans than in vent fluids. This difference has given rise to a natural proton gradient across the vent membranes that had the same polarity (outside positive) which is similar to the electrochemical potential as modern cells have. This might be the reason that last universal common ancestors of all the three domains have evolved proton pumps.

6 0
1 year ago
The lineage of pea plants produced round seeds for four generations. The plants that fertilized these pea plants also produced r
adell [148]

Yes, it is possible.

In this case both of the parental plants were heterozygotes and they manifested dominant allele in their phenotype, which is round seed.

P: Aa x Aa

F5: AA, Aa, aA, aa - possible genotypes in fifth generations.

A- dominant allele (round seeds); a- recessive allele (wrinkled seeds)

Wrinkled phenotype is manifested only if there are two recessive alleles present.

3 0
1 year ago
In pea plants, yellow seed color is dominant and green seed color is recessive. What will the generations look like? Assume that
shepuryov [24]

Answers;

-The P generation has yellow and green seeds.

-The F1 generation has all yellow seeds.

-The F2 generation has yellow and green seeds.

Explanation;

Yellow seed color (dominant)

Green seed color (recessive)

P generation: In Mendel's experiments the parental generation.

Yellow seed color

F1 generation: In Mendel's experiments the offspring of the P generation

Yellow seed color and

Green seed color

F2 generation: In Mendel's experiments the offspring of the F1 generation

4 0
2 years ago
Read 2 more answers
Why does it make metabolic sense for the same hormone signal to stimulate glycogenolysis and inhibit glycolysis in the liver whi
Debora [2.8K]

This is because if the two  metabolic processes were to be  active at at the same time;  

Two molecules of<u> ATPs</u> and <u>Guanosine triphophate </u>(sometimes used for  energy transport) <u>will be expended per each cycle, with no  compensatory rate  of replacements present  at the moment in the cell,this  affects cell metabolism for energy availability</u>

<u>2</u> Both<u> Glycolysis and Gluconeogensis </u>are both<u> exergonic processes  in cells. </u> The  heat energy liberated from these Calorinogenic effects  will be higher than what the natural thermodynamic barrier of cells can withstand. Consequently;  the heat will raise temperature of the cells affecting metabolic activities of hormones and enzymes which are (proteins) ,and easily denature by high temperatures.    

However, in muscles cells,gluconeogeneis is a compensasory process of Glycolysis. This because during active exercise with high metabolic demand in muscles cells, glucose is rapidly metabolise  to to pyruvate,(but not at the rate that the Citric acid  cycle can  metabolise) for Lactic acid production by muscles cells for energy production.  Pyruvate must be broken down rapidly so that NAD+ will be available for  Glycolysis to continue. Therefore  to sustain Glycolysis at this rate  continuous supply of glucose is supplied  from Gluconeogenesis.

8 0
1 year ago
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