The apoplast in plant tissues consists of<u> cell walls, extracellular spaces, and vessel elements</u>
Explanation:
In plant cells, apoplasts refer to the extracellular space present outside the plasma membrane. These are formed by continuous cell walls arranged adjacent to each other.
The main function of apoplasts is transportation of water and other solutes between tissues and organs by free diffusion of molecules via the plasma membrane.
This pathway called the apoplastic pathway constituted by its vessel elements, cell walls, and extracellular space aids in passive absorption by roots
Answer:
Tertiary structure
Explanation:
The tertiary structure of a protein includes the overall three-dimensional arrangement of all the atoms of a protein. The amino acid residue located far apart from each other in a protein and have different secondary structures interact and determine the overall folding pattern of the proteins.
Therefore, when any condition such as mad-cow disease causes misfolding of protein, it affects the tertiary structure of the proteins since the overall folding pattern of the protein reflects its tertiary structure.
In most mammals, hemoglobin consists of 4 distinct subunits. These subunits consist of an aminoacid chain (aminoacids are the building blocks of proteins) and a heme group. 2 of the subunits have a protein chain with a-structure and 2 have a protein chain with beta structure. The heme groups give hemoglobin and thus blood its red color. Each of these groups has a positively charged iron ion in its core. Iron is necessary so that hemoglobin can bind oxygen and transfer it through the blood flow to the tissues. Given the above exposition, the correct answers are: 4, alpha proteins, heme, iron, oxygen.
Bonus: Hemoglobin is an important example of protein structure since it shows that not only aminoacid order (secondary structure) and configuration of protein chains (tertiary structure) are crucial to the function of a protein; how the multiple chains bind to each other is equally critical (quaternary structure).
Answer:
dissolve wastes and nutrients
Explanation:
Water is a bipolar solvent. the polar arrangement of oxygen and hydrogen atoms allows water to have a positive electrical charge and a negative charge. This allows the water molecule to become attracted to many different types of molecules. Through this attraction, water can become so heavily attracted to disrupt the attractive forces that hold the compounds and, thus, dissolving them.
Answer:
Which statements regarding hypotheses are true? Check all that apply. Hypotheses are based on observations. Hypotheses are written when experiments are complete. Hypotheses are formed from testable questions. Hypotheses are tested with controlled experiments.
