Answer:
A. solvent
Explanation:
Its called the universal solvent because its capable of dissolving more substances than any other liquid.
b. has a genome made of RNA.
c. has the simplest of all protein coats.
d. was discovered before any other virus.
How is the virus reproduced during the lysogenic cycle?
a. through reproduction of the host cell
b. by using viral enzymes to reproduce viral DNA
c. by using the cell's enzymes to reproduce viral DNA
d. by breaking the cell open and releasing new viruses
Ans. (b). has a genome made of RNA.
Retroviruses are viruses with RNA molecules as their genome. They insert a copy of their RNA genome into the host cell DNA and change the cell genome. These viruses are generally known as single-stranded positive-sense (+ strand) RNA viruses.
Examples: Human immunodeficiency virus and hepatitis B virus.
Thus, the correct answer is option (b).
Ans. (a). through reproduction of the host cell.
Lysogenic life cycle is a virus reproductive cycle that involves integration of viral nucleic acid into host's genome or formation of a replicon in host's cytoplasm.
The host cells (bacterial cells) remain alive and reproduce normally, so thus, viruses reproduce through the reproduction of host (bacterial cells).
Thus, the correct answer is option (a).
B) synapsis of chromosomes
C) production of daughter cells
D) alignment of chromosomes at the equator
E) condensation of chromatin
The process that occurs in meiosis but not in mitosis is: synapsis of chromosomes
MEIOSIS AND MITOSIS:
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The process that is unique to meiosis and not found in mitosis is synapsis of chromosomes, which happens during prophase I of meiosis. This involves the pairing of homologous chromosomes and the formation of tetrads leading to genetic variation.
Among the options provided, the process that occurs in meiosis but not in mitosis is the synapsis of chromosomes (option B). Synapsis happens during the prophase I of meiosis, where homologous chromosomes pair up aligning their genes in a process known as synapsis. This is unique to meiosis and results in the formation of tetrads which eventually leads to genetic variation due to crossing over. In contrast in mitosis which is involved in somatic cell division, homologous chromosomes do not pair up or form tetrads.
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Answer:
The correct answer is mesosphere.
Explanation:
The atmosphere exhibits five distinct layers, which are determined by the modifications in temperature that take place with the upsurging altitude. These are troposphere, stratosphere, mesosphere, thermosphere, and exosphere. Of the mentioned layers, the mesosphere, that is, the layer present above the stratosphere is considered as the coldest layer of the atmosphere. The coldest portions of the atmosphere are situated in this layer and can reach up to -90 degree Celsius.
a. True
b. False
The odd hormone insulin Cortisol
Explanation
Cortisol is known as the odd hormone because it is release when someone stressed and it interfer the brain activity by making the person feels like blank. The low cortisol level causes decrease appettite, fatigue, weightloss, different skin problem, low blood sugar and many more. The high level of cortisol causes the weight gain, acne, muscle weakness, thinning skin, flused face and other type of causes.
Among insulin, cortisol, glucagon, and calcitonin, cortisol is the 'odd one out'. It is classified as a corticosteroid, whereas the others are peptide hormones.
The odd hormone in the list of insulin, cortisol, glucagon, and calcitonin, is cortisol. While insulin, glucagon, and calcitonin are all peptide hormones, cortisol is a corticosteroid, a different type of hormone, released by the adrenal cortex in response to long-term stress. Insulin is produced by the beta cells of the pancreatic islets and regulates blood glucose levels. Glucagon, produced by alpha cells of the pancreas, also helps in regulating blood glucose levels. Calcitonin is a hormone produced by the parafollicular cells of the thyroid gland and functions to lower blood calcium levels. Though all these hormones play integral roles in the body, cortisol, as a corticosteroid, is structurally and functionally different from the others, making it the 'odd one out'.
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