Animal cells:
They are self sufficient, because of Nano-Chemical factories, so they can make their own stuff like cell membranes.
A cell can destroy itself through apoptosis in the event that it is irreparable.
Plant cells:
These were the first type of cells discovered by us.
Plants only actually use about 1/6 of the energy they get from photosynthesis, the rest is stored for animals that eat the plant.<span />
Answer:
Explanation:
Comparing objects or things using "as" or "like" is referred to as "simile".
<u>Here:</u>
"You" is being compared to "actor who has practiced his lines" using "like" for being "well-prepared".
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Answer:
b. Pleiotropy
Explanation:
The term “pleiotropy“ refers to a situation in which variants in a single given gene have a number of different, seemingly unrelated effects in the resulting phenotype.
For instance: patients with mutations in the COL1A1 gene (codifying for collagen alpha-1 chain) may present with a genetic disease called “osteogenesis imperfecta”, characterized by (among other findings) bluish sclera, brittle bones, and deafness. All those disparate clinical manifestations may be traced back to the inability of the body to produce normal type 1 collagen.
Answer:
The correct answer is 4. insulin
Explanation:
Proteins are made up of amino acids which are joined together by peptide bond. Insulin is a peptide hormone which is made amino acids therefore it is also a protein. An insulin molecule is made up of 51 amino acid residues and 5808 Da is its molecular weight.
The insulin hormone is released by the beta cell of the pancreas. It is released when the level of glucose in the blood increased from the normal blood glucose level.
It helps in conversion of glucose into glycogen and its storage in muscles and liver. So by doing this, it decrease the level of glucose in the blood. Therefore the right answer is 4.
Answer:
D. Calcium ions.
Explanation:
Here we are talking about the mechanism of muscle contraction. The most accepted theory of muscle contraction is sliding filament theory. It was given by Huxley and Huxley. During the process actin filaments slides over myosin filament by forming cross bridges. The sequence of events are as follows:
a. An action potential propagates through the motor nerve and reach the nerve endings on the muscle fiber at neuro-muscular junction.
b. Neurotransmitter called acetylcholine is released by the nerve endings.
c. Acetylcholine binds to the receptors on muscle fiber and opens the gated channels which causes flow of Na+ ions into the muscle fiber.
d. This influx of sodium ions initiates an action potential in the muscle fiber which reaches the T- tubules or transverse tubules. Here it causes the sarcoplasmic reticulum to release large amounts of calcium ion.
e. Calcium ions are responsible for initiating the attractive forces between actin and myosin filaments. Cross bridges are formed, actin slides over myosin causing the contraction of muscle.
