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11Alexandr11 [23.1K]
3 years ago
6

What type of transport does not require energy

Biology
1 answer:
JulijaS [17]3 years ago
4 0

Answer:

Passive transport

Explanation:

Passive transport isn't driven by an investment of cellular energy. Rather, it's driven by the tendency of the system to grow in entropy. The four main kinds of passive transport are diffusion, facilitated diffusion, filtration, and osmosis.

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In the meselson-stahl experiment, cells were grown for one generation in growth medium containing a relatively heavy nitrogen is
elena55 [62]

Out of the following give choices;

a. All DNA strands contained only the heavy nitrogen isotope.

b. Half of the DNA strands contained only the light nitrogen isotope.

c. All DNA strands contained both heavy and light nitrogen isotopes.

d. All DNA strands contained only the lighter nitrogen isotope.

The answer is b. Meselson–Stahl experiment demonstrated the semi-conservative model of DNA replication. When DNA is replicated, one strand of the new double helix strand is the parent's strand while the other is the newly synthesized one. This made the semiconservative model stand out over the other two, dispersive and conservative models.






7 0
3 years ago
Dominant and recessive genes effect on phenotype
marysya [2.9K]

Dominant is the first gene variant in a phenotype from the two alleles of a gene and recessive has effect on the third allele of a phenotype.

Explanation:

The genetic phenomenon of masking of chromosome with one variant of allele or predominating  the impact of one gene on its chromosomal copy is Dominance.  In this phenomenon the first variant of gene is known as ‘dominant’ and the second one is ‘recessive’.  

This phenomenon is not inherited by phenotype, it has a relative effect on two alleles of a gene where one is dominant on other and the recessive is on third allele. Dominant allele has functional protein but recessive does not have it.

4 0
3 years ago
The basic difference between lung volume and lung capacities is that
Ivan

Answer:

the air in our lungs is measured in terms of lung volumes and lung capacities. volume measures the amount of air for one function, like such as inhalation or exhalation. capacity is any two or more volumes, for example, how much can be inhaled from the end of a maximal exhalation

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5 0
2 years ago
Can someone help me with this please? Match the following organelle to its function.
kap26 [50]

Answer:

lysosomes

endoplasmic reticulum

vacuoles

mitochondria

cytoplasm

golgi apparatus

ribosomes

chloroplast

Explanation:

in order of the functions listed

4 0
1 year ago
What is a compound eye?
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An eye consisting of an array of numerous small visual units, as found in insects and crustaceans.
6 0
2 years ago
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