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4 years ago

During _____________, molecules like glucose, use a protein channel to enter or leave the cell.

Biology

2 answers:

Damm [24]4 years ago

5 0

Answer:

Facilitated diffusion.

Explanation:

The diffusion may be defined as the movement of the solute particles from the region of the higher concentration towards the lower concentration. The ATP is not required in the diffusion process.

Facilitated diffusion is a type of diffusion in which molecules move along the concentration gradient by the use of protein molecules. The integral membrane proteins forms pores or channels that allow the movement of particles through these pores.

Thus, the answer is facilitated diffusion.

ladessa [460]4 years ago

4 0

Facilitated diffusion.

A protein channel is used to allow larger or charged molecules to enter/leave the cell.

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I need help please and thank you! And explain please

JulijaS [17]

Answer:

The answer is C. Fertilizers

Explanation:

Plants, like animals, require certain nutrients for optimal growth and development. The soil is the primary source of nutrients for plants. Some nutrients like the following are crucial for the plant development and growth.

Nitrogen (a key element in plant proteins and hormones)
Phosphorous (required for early root and plant growth), magnesium (required for production of chlorophyll)
Sulfur ( an element in proteins)
Potassium (improves fruit quality, enhances growth and disease resistance)
Apart from these, metals like copper, iron, manganese, zinc and molybdenum are required for growth in trace amounts.

Fertilizers:

Fertilizers are artificial or natural forms of these nutrients that are added to the soil or the plant to enhance growth and development.
A fertilizer can either be one nutrient or a combination of the aforementioned nutrients. For example, urea is a purely nitrogen based fertilizer whereas potassium phosphate fertilizer is a combination of two nutrients.
Fertilizers are supplied to the plants in a readily available form.
Fertilizers help in increasing the crop yield.

6 0

3 years ago

In a given year, which would result in the greatest increase in population size?

Kobotan [32]

B would definitely result in population rise.

6 0

3 years ago

Read 2 more answers

Describe the three structural components of an RNA nucleotide monomer. Explain the role of RNA polymerase during transcription.

igomit [66]

The structural components of an RNA and the role of the polymerase during transcription is explained below and the nucleotide is formed by the chemical substances and the polymerase plays a role in commencing to the gene expression.

Explanation:

1.Three structural components of an RNA nucleotide monomer:

A nucleotide is formed by the three unique chemical substances namely a 5-carbon sugar molecule, a nitrogenous base, and a phosphate group with all these three combinations the nucleotide is formed.

2.The role of RNA polymerase during transcription:

RNA polymerase examines the method of transcription, through which the data collected in a molecule of DNA is drawn into a new molecule of messenger RNA.
This transcription is the first round commencing to gene expression.
RNA synthesis is provided out by proteins and that copies the genetic data from DNA in a very organized, multi-stage method

4 0

3 years ago

Which event in meiosis accounts for Mendel's principle of segregation?

balu736 [363]

Answer:

c. separation of homologs at anaphase I

Explanation:

Law of Segregation is also popularly known as purity of gamete. Law of Segregation is proposed by Mendel’s which stands universal law till date. The law states that allele (alternative form of same gene) pairs separate or segregate at the time of gamete formation.

The gametes form by meiosis or reductional division so, each gamete receives only one allele of trait.

During metaphase I of meiosis the homologous chromososmes gets arranged on the central plate and get attached to the spindle fibres and then anaphase I begins with the separation of each chromosome of the homologue. Each chromosome of a pair moves to opposite poles.

7 0

3 years ago

Which one of its following abilities could have led to this?

tekilochka [14]

You can't really answer the question

5 0

3 years ago