Answer: Different eukaryotic cells contain different numbers and types of organelles depending on the specific tasks they must perform
Explanation:
Since living organisms with eukaryotic cells live in different environments and have diverse metabolic needs; each eukaryotic cell has organelles that have specific functions.
For instance:
Though, both fishes and humans have eukaryotic cells, they do not share all cellular organelles in common.
Thus, it is true that different eukaryotic cells contain different numbers and types of organelles depending on the specific tasks they must perform
The purpose of respiration in general is to turn food into energy that a living biological cell can use. Anaerobic respiration is respiration that uses any molecule besides oxygen to do this. Many bacteria use anaerobic respiration.
Answer and Explanation:
The<u> soil-plant-atmosphere continuum</u>, SPAC, describes the movement of water molecules from the soil, through the transportation system of a vascular plant, and then into the surrounding air in the plant's environment or atmosphere. Within plants, specialized tissue, called the xylem and phloem, form a plant-wide network of tubes to facilitate the movement of molecules to different tissues. Water molecules typically move through the plant in the order:
soil→roots→stems→leaves
This occurs as follows:
- As part of the vascular system, the xylem is responsible for the transportation of minerals and water firstly from the roots, where it enters from the surrounding soil into the root hairs.
- The water moves up the xylem vessel via<u> transpiration pull</u>. The dead cells in mature xylem vessels, are devoid of cytoplasms and arranged end-to-end, forming an empty tube within the plant's stem.
- Transpiration pull, exerts tension on the xylem vessel, as water is lost continuously through evaporation from the surface of the leaves, through pores or stomata; this is called <u>transpiration</u>.
- Guard cells control the transpiration rate by changing their shape to allow for more or less evaporation dependent upon the amount of water available in the surrounding tissue.
- open stomata= turgid guard cells= high water availability
- closed stomata= flaccid guard cells= low water availability
- The <u>cohesion </u>of water molecules, where the molecules are thought to readily cling to each other, forms a continuous column. Along with osmosis, the movement of water molecules from regions of high concentration to regions of low concentration, cohesion is responsible for the movement of the water molecules into the atmosphere.
Answer:
"Brachiopoda"
Drosal and ventral valves; Individuals resemble clams; May have no anus
"Bryozoa"
Possesses a chitinous zoecium; Anus opening near mouth; Colonies resemble moss
<h3><u>Answer;</u></h3>
is a relationship between distance and velocity
<h3><u>Explanation;</u></h3>
- According to Hubble's Law the recessional speed of a galaxy is directly proportional to its distance.
- <em><u>The Hubble Constant is the unit of measurement used to describe the expansion of the universe, it is the relationship of the recessional speed of a galaxy and its distance.</u></em>
- The formula showing the relationship is given by the formula:
v = Hd, where: v = velocity of a galaxy, in km/s. H = Hubble Constant, measured in km/s/Mpc and d is the distance in km.