Answer:
All statements are true and explain the function of most organelles present in the cell.
Explanation:
I remember the following:
-The nucleus directs cell activity: the nucleus is where the genetic information is found and by means of gene expression it controls the cellular functions.
-Ribosomes produce proteins for the cell: Ribosomes make messenger RNA proteins (mRNA) by connecting amino acids together
-These proteins are then moved through the cell by the endoplasmic reticulum: it is a network of membranes within the cell through which proteins and other molecules move
-The Golgi apparatus packages and distributes proteins from the endoplasmic reticulum: It transforms and exports protein to the rest of the body. Proteins, in their passage through the Golgi apparatus, carry out a modification process.
-Vacuoles store water, waste products, food, etc: vacuoles store substances, in plants they occupy a large percentage of the cytoplasm and change their size during ormoregulation.
-Lysosomes break down waste material and debris: They contains hydrolytic enzymes that allow intracellular digestion of macromolecules
-Mitochondria break down sugar molecules to supply energy. Similarly, chloroplasts capture the energy from sunlight and convert it into chemical energy: Chloroplasts and mitochondria through the processes of cellular respiration and photosynthesis produce energy necessary for the vital functions of the cell.
-The cell membrane protects the cell and controls what enters and leaves it. The cell wall supports the cell membrane, maintains the cell’s shape, and protects the cell. The cytoplasm supports and protects organelles in the cell: The membrane is the support of the cell and through it there is exchange with the external environment. The cytoplasm is the one that supports the rest of cellular organelles
Answer:
d Divergent plate boundary
Answer:
D. Titan's atmosphere contains nitrogen.
Explanation:
- Titan is the largest satellite of Saturn.
- It is the second largest moon next to Ganymede.
- Titan's landscape is similar to earth's and show dry rivers and hydrocarbon lakes. it is the only body in the solar system that shows evidence of surface liquid other than earth.
- It is the only planetary moon in the solar system which has an atmosphere which is rich in nitrogen like earth.
First figure has the lowest pitch
All living creatures are classified into systems and sub-systems based
on their similar characteristics. They are divided from bigger groups
into smaller groups based on the detail of their similarities i.e. how
they look, move, reproduce and how they relate to each other. A
practical way of understanding the classification of living organisms is
that organisms are linked to other similar organisms via family trees.
The classification of all living creatures includes at least four
levels: order, families, genus and species.
