a substance that moves across a cell membrane without using the cells energy tends to move? a.) away from the area of equilibrium b.) away from the area where it is less concentrated. c.) away from the area where it is more concentrated d.) toward the area where it is more concentrated
Answer: The correct option is C.) away from the area where it is more concentrated.
A substance that moves across a cell membrane without using the cells energy tends to move from an area of high concentration to an area of low concentration.
This is known as Passive transport. In this transport, substances move down the concentration gradient i.e from an area of high concentration to an area of low concentration. It is also called simple diffusion as no energy is required in this process.
The offspring has 46 chromosomes; 23 from one parent and 23 from the other.
A chromosome is carrier agent of all genetic information of the living organism, it is a thread-like structure present in the nucleus of cells, is made of a molecule of DNA (Deoxyribonucleic acid) and histone proteins.
It is made up of three components, DNA, proteins and RNA, amount of the DNA content ranges from 30 to 40 %, proteins from 50 to 65%, and of RNA from 1 to 10%.
Two types of protein observed in DNA such as histone and non-histones proteins, histone constitute large amount (90% of total protein), whereas non-histone is present in small amount (around 10% of total protein).
The histone protein is basic, whereas, the DNA is acidic, so it can be neutralized; DNA in chromosome is present in two forms such as Euchromatin and Heterochromatin.
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6. Tommy and John are trying to move a large table. John pushes with a force of 1150N and Tommyhelps him by pushing on the same side of the table with a force of 800N. Sketch the individual forces exerted on thetable and then calculate and show the net force exerted on the table.
Answer:
Net force = 1150 + 800 = 1950 N
Explanation:
The diagram above illustrate the force applied to the large table by Tommy and John. The force are exerted in the same direction . The first arrow represent the force applied by John which was 1150 Newton and the second arrow represent the force exerted by Tommy which was 800 newton. There was no opposing force indicated like gravity from the question so no need to sketch that.
The forces were applied in the same direction, therefore, the Net force can be computed by adding their individual forces .
Net force = 1150 + 800 = 1950 N
Answer:
the system in your body that circulates blood and lymph through the body, consisting of the heart, blood vessels, blood, lymph, and the lymphatic vessels and glands.
Explanation: