Bone cells that remove calcium from the blood to make bone are

Types of stimuli the sensory organs receive.

9966 [12]

Answer:

Chemicals (chemoreceptors)

Temperature (thermoreceptors)

Pressure (mechanoreceptors)

Light (photoreceptors)

Explanation:

4 0

3 years ago

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A cross is made between scute-bristled females and ruby-eyed males. Phenotypically wild F1 females were then mated to homozygous

Fiesta28 [93]

Answer:

Expected phenotypes include: Wild type males, wild type females, scute-bristled females, scute-bristled males, ruby-eyed females, ruby-eyed males, and scute-bristled, ruby-eyed males, and scute-bristled, ruby-eyed females

Explanation:

In this sense, it means that all of the options are possible phenotype of expected offspring. It is expected that there will be 425 Scute-bristled, 425 ruby-eyed offspring, 75 wild-type offspring and 75 scute-ruby offspring.

7 0

4 years ago

Which statement best describes natural selection?

mylen [45]

Answer:

d

Explanation:

trust me

6 0

3 years ago

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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

Cells must use energy to move a substance against a concentration gradient i.e., from a compartment with a low concentration of

garik1379 [7]

Answer:

Transport of sodium ions out of the cell

Transport of potassium into the cells

Transport of calcium ions out of cell

Transport of calcium ions OUT OF the cytoplasm of a cell and INTO an organelle that has a high concentration of calcium ions.

Explanation:

In general the concentration of sodium ion is higher outside the cell in the extracellular fluid and the concentration of potassium ion is higher inside the cell.

During an active transport, a cell uses energy to move molecules against the gradient as a part of primary active transport. In the secondary active transport, the molecules move as per the electrochemical gradient established by the primary active transport.

In primary active transport, sodium ion moves out of the cell and potassium ion moves into the cell through the assistance of sodium potassium pump. In order to maintain the stability, calcium ion from the sarcoplasmic reticulum is pumped out of the cell

Hence , the correct answers are

Transport of sodium ions out of the cell

Transport of potassium into the cells

Transport of calcium ions out of cell

Transport of calcium ions OUT OF the cytoplasm of a cell and INTO an organelle that has a high concentration of calcium ions.

8 0

4 years ago