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Norma-Jean [14]
3 years ago
5

Which of the following diseases is caused by a virus?

Biology
1 answer:
Greeley [361]3 years ago
7 0
I would say B is the answer because Athlete's Foot is an infection, African Sleeping Sickness is caused by a parasitic disease, and tuberculosis is a disease.
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What scientist determine the rule that A always pairs with T and C alway pairs with G
sleet_krkn [62]

Explanation:

These base pair relationships are often called Chargaff's rules of DNA base pairing, named after the Columbia University scientists who observed that there are equal molar concentration of A & T, as well as G & C in most DNA molecules.

4 0
2 years ago
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A circular molecule of DNA contains 1 million base pairs. If the DNA synthesis at a replication fork occurs at a rate of 100,000
lakkis [162]

Answer:

<h2>5 minutes </h2>

Explanation:

1. In bidirectional replication;  there are two replication forks, and each proceeding at a rate of 100,000 (as given in the question) nucleotides per minute.  

2. So, by  the given rate of replication, we can calculate that, it would require 5 minutes for the circular DNA molecule to be replicated by bidirectional replication because each fork synthesize  500,000 nucleotides in 5 minutes ( 100,000 per minute) ( as given, in 5 minutes × 100,000 nucleotides per minute= 500,000 and by 2 forks= 1,000,000) within the time period.  

4 0
3 years ago
With respect to sensory changes in middle age, people commonly experience a(n) _______.
Alex787 [66]

The correct answer is A. Decline in vision

Explanation:

The term "middle age" is used to describe the time span between 45 and around 65 in human life. During this, important changes occur in terms of senses, this age usually implies a decline in senses including pain, taste, smell, and vision. In terms of vision, it is common during middle ages people began experiencing blurring vision or weakened vision as during this age conditions such as presbyopia, glaucoma, cataracts, among others. Additionally, the decline in vision in this age is commonly related to other conditions such as diabetes, the use of medicines and also jobs that are visually demanding. Thus, in middle age, people commonly experience a decline in vision.

6 0
3 years ago
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What would happen if there were no decomposers in a food web.
podryga [215]
There would be dead animals overloading the Earth. Think about it, without worms and other things that break down dead things they would still be here and just sit there. 
8 0
3 years ago
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Cherry cells have 32 chromosomes. how many chromosomes do each of the daughter cells produced by mitosis have?
romanna [79]
They have the same 32 they are diploid. Meiosis makes haploid cells so there would only be 16.
5 0
3 years ago
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