Which feature is not found in viruses?
Answers
Answer;
-Mitochondria
Explanation;
-Viruses are small infectious agents that replicates only inside the living cells of other organisms. Some of the features of viruses includes;
-They are enclosed in a protective envelope.
-They have spikes, which helps them to attach to the host cell.
-They are non cellular.
-They do not respire, do not metabolize and do not grow but they do reproduce.
-They contain a protein coat called the capsid.
-They have a nucleic acid core containing DNA or RNA.
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The building blocks of proteins are __________ while the building blocks of nucleic acids are __________.A: is crossed off B: amino acids; saccharides C: amino acids; nucleotides D: nucleotides; amino acids
A cell turns glucose from thefood we eat into energy for ourbody to use. What cell functiondoes this describe?
Hypertension
Diabetes
Pulmonary Heart Disease
Answers
Answer:
Diabetes
Explanation:
Diabetes is a metabolic disease. :)
Answers
The chance that their first child will have type O blood is 25% since the genotypes of offsprings are .
What is a blood group?
An allele is a particular form of genetic information that can be found in our DNA at a particular spot on a certain chromosome. This form of genetic information is known as an allele. IA, IB, and i are the three distinct alleles that can determine a person's blood type. I is the most common. These three alleles can be referred to as A (for IA), B (for IB), and O for the sake of simplicity (for i).
Therefore, when a man heterozygous for blood type A marries a woman heterozygous for blood type B the chances that their first child will have type O blood is 25% since the genotypes of offsprings are .
Learn more about blood groups, here:
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A man heterozygous for blood type A marries a woman heterozygous for blood type B. The chance that their first child will have type O blood is??
%25
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B. New oceanic crust is formed at seamounts and spreads outward in all directions.
C. New oceanic crust is formed at deep-sea trenches, pushed away from the trench, and destroyed at midocean ridges.
D. New oceanic crust is formed in the middle of tectonic plates and then spreads outward in bands.
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The answer is B. This occurs at mid-ocean ridges, where two tectonic plates are moving away from each other. As they move in opposite directions, the magma from the mantle below rises to fill the void/space left above. As the magma rises, it cools and forms a new crust. This volcanic activity continues as long as the tectonic plates are moving away from each other and new crust is formed spreading outwards from the ridge, with time.
b. Community, population, biosphere, ecosystem
c. Population, community, ecosystem, biosphere
d. Biosphere, community, population, ecosystem
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Answers
Answer:
The correct answer is b. He determined that DNA contains four nitrogenous bases.
Explanation:
Levene was an American biochemist who studied the structure of DNA in the early 1900s and in 1920 he found that DNA consists of four nitrogenous bases that are Adenine, Guanine, Thymine, Cytosine.
He also found deoxyribose sugar and phosphate group and said that nucleotide is the basic unit of DNA which contains a ribose sugar with attached nitrogenous base and phosphate group.
He also concludes that an equal amount of adenine, guanine, thymine, and cytosine makes the DNA which is now known as tetranucleotide hypothesis. So the correct answer is b. He determined that DNA contains four nitrogenous bases.