False. Government sanctioned activities to improve ecosystems have helped to protect areas of wildlife and ecosystems from development and human activity. Although not always wholly effective, government sanctioned activities are in place to protect.
Answer:
true
Explanation:
Scientists have discovered a new protein complex that keeps the brakes on stem cells, allowing them to maintain their indefinite potential. ... Embryonic stem cells (ESCs) are the very definition of being full of potential, given that they can become any type of cell in the body.
Explanation:
Both the endocrine and nervous systems use chemical signals to communicate and regulate the body’s physiology. The endocrine system releases hormones that act on target cells to regulate development, growth, energy metabolism, reproduction, and many behaviors. The nervous system releases neurotransmitters or neurohormones that regulate neurons, muscle cells, and endocrine cells. Because the neurons can regulate the release of hormones, the nervous and endocrine systems work in a coordinated manner to regulate the body’s physiology.
Immature seed cones of conifers are usually green before pollination, and flowers of grasses are inconspicuously colored. What does this indicate about their pollination? they are wind pollinated.
<u>Answer</u>: C) Hydrophobic interior, hydrophilic exterior
<u>Explanation</u>:
- The <em>plasma membrane</em> of the cell defines its boundary and separates its internal components from the external environment.
- The basic components of the plasma membrane include phospholipids, carbohydrates, proteins, and cholesterol.
- The plasma membrane is a phospholipid bilayer, with <em>hydrophobic</em> tails of the phospholipid projecting <em>inwards</em> and the <em>hydrophilic</em> exterior in contact with the external environment.
- <em>Due to this, the plasma membrane has a hydrophobic interior and hydrophilic exterior. </em>