Answer:
See the answer below
Explanation:
<em>The DNA of eukaryotic organisms being present in the nucleus while the protein-synthesizing organelle, the ribosome being present in the cytoplasm poses a spatial problem. It means that transcribed DNAs (messenger RNA) in the nucleus would have to somehow be transported to the ribosome in order for the cell to successfully synthesize proteins.</em>
The problem of transporting the messenger RNA is solved by two features of the cell:
- The presence of pores in the nuclear envelop
- The presence of transport proteins in the nucleus
<u>The mRNA binds to the transport proteins to form mRNA-protein complexes and is transported through the nuclear pores, often with the assistance of ATP. </u>
Answer:
A lipid is any of various organic compounds that are insoluble in water. They include fats, waxes, oils, hormones, and certain components of membranes and function as energy-storage molecules and chemical messengers.
Answer:
Movement of free water molecules from an area of low concentration to an area of higher concentration
Explanation:
The correct order in the blanks are as follows: <u>C A E F G B</u>
c. glucose is actively transported in to the phloem
a. Water enters the phloem through osmosis
e. Pressure from the leaves pushes the water and glucose through the phloem
f. An area of low glucose concentration is reached
g. Glucose is actively transported out of the phloem
b. Water exits the phloem through osmosis
<h3>
What is translocation?</h3>
The transport of sugar created during photosynthesis to all other areas of the plant for respiration and the other activities mentioned above is known as translocation.
Utilizing light energy, plants use photosynthesis to convert the inorganic chemicals carbon dioxide and water into glucose. Respiration uses a portion of the glucose created by photosynthesis. The seven biological processes receive energy as a result.
For more information regarding translocation, visit:
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Answer:
The correct answer is - option B. They are small because they lack a nucleus.
Explanation:
Red blood cells or erythrocytes are specialized cell that produce in bone marrow and have specific role such as carrying oxygen from lungs to deliver it to the various organs and carry out carbon dioxide.
In mammals these cells lack cell organelles such as nucleus and mitochondria, a major factor that determined its smaller size. The size of RBC are move through narrow vessels throughout a organism because of its specific size and shape that provide it space for hemoglobin and allow to be flexible and bend to move through narrow vessels.
Thus, the correct answer is : option B. They are small because they lack a nucleus.
