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devlian [24]
3 years ago
12

In October of 2002, General Mills Inc. recalled over 4,000 cans of refried beans suspected to be contaminated with Clostridium b

otulinum. Which of the following statements regarding adult botulism is correct?
a. the anaerobic environment of the sealed can provides a suitable environment for the spores to germinate.
b. the spores produce a potent neurotoxin
c. symptoms of the disease are stiff, contracted muscles, such as "lockjaw", and eventual paralysis of the respiratory muscles, which results in death
d. reheating the beans to kill the bacteria will prevent the disease.
e. all of the above statements are correct
Biology
1 answer:
Vesna [10]3 years ago
7 0

Answer:

A and B

Explanation:

A and B are correct answers.

C is incorrect because Botulism does not produce stiff muscle, in fact it produces flaccid paralysis. Stiff muscles and lockjaw is produced by C. Tetani.

D is somewhat incorrect because, although you can kill the toxins via heat, you would need to heat your food to over 100°C for around 10 minutes, which no one does. Thus, reheating beans would not protect you from the bacteria and/or its toxins.

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Cleaving a flatworm into pieces would not kill the flatworm as each piece would turn into a new flatworm. The mechanism is known as fragmentation. In multicellular species, fragmentation refers to a kind of asexual reproduction in which a species gets cleaved into fragments.  

Each of these fragments forms into completely developed, mature individuals, which are similar to their parents. Fragmentation is also called splitting, it is a mode of reproduction witnessed in various species like molds, filamentous cyanobacteria, lichens, various plants, and animals like flatworms, sponges, sea stars, and some annelids.  


3 0
3 years ago
Dihybrid Practice Problems
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Answer:

a. Genotype of the parents are; Rr and rr

b. Please find the explanation to A below

Explanation:

This question involves a single gene that codes for flower color in a plant. The allele for red flower (R) is dominant over the allele for white flower (r). This means that a plant that is heterozygous for flower color (Rr) will be red.

In a cross between a plant with red flowers and white flowers, the phenotype of the offsprings is represented as: 37 plants with red flowers and 41 plants with white flowers. Observing from this number, one would realize that the phenotype ratio is equivalent to 1:1. This phenotypic ratio is only possible when the parent with red flower is heterozygous for the gene i.e. Rr. Hence, the genotype of the parents are: Rr and rr.

b) If one were to cross Rr (red flower) × rr (white flower), the phenotypic ratio of red to white offsprings will be 1:1. Hence, judging from the ratio got from the cross of the two parents above (1:1), the parental genotypes are Rr and rr.

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3 years ago
Which brain study technique is not correctly matched with a limitation?
Over [174]
EEF or electroencephalogram expensive and time consuming.

Hope this helps!
4 0
4 years ago
Which of the following has contributed the most to the increase of invasive species in Europe?
Zielflug [23.3K]
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4 years ago
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ruslelena [56]

Answer:

4780.3 cm^3

Explanation:

A cone is a three-dimensional shape and its volume can be calculated using the formula:

V = 1/3 πr^2h or πr^2h / 3

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r= radius (cm)

h= height (cm)

π= constant (22/7)

In this question, the values of r and h are 13cm and 27cm respectively.

Hence, to calculate the volume of the cone, we say;

V = 1/3 × 22/7 × 13 × 13 × 27

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3 years ago
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