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3 years ago

How do the functions of the glycoproteins on the virus and the flagella on the bacteria differ?

Biology

1 answer:

Anni [7]3 years ago

7 0

B Glycoproteins allow a virus to recognize and attach food

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The pancreas and the gonads are glands with double secreation. Explain why.

olganol [36]

Explanation:

Pancreas functions as both endocrine and exocrine gland. Hence, called as dual function gland or a mixed gland. Exocrine part of pancreas secretes digestive enzymes while, its endocrine part (islets of Langerhans) produce two hormones, i.e. insulin and glucagon.

3 0

3 years ago

An autosomal recessive disease has an incidence of 1/10,000. What is the approximate frequency of heterozygote carriers for this

goblinko [34]

Answer:

Option B

Explanation:

Given

Number of incidences or frequency of an autosomal recessive disease $= \frac{1}{10000}$

As per Hardy Weinberg's equation, frequency of a recessive genotype is $q^{2}$

$q = \sqrt{\frac{1}{10000} }\\ q = \frac{1}{100}$

As per first equation of Hardy Weinberg's -

$p+q=1$

so ,

$p = 1-q\\p = 1-\frac{1}{100}\\p = \frac{99}{100}$

$p^2 = (\frac{99}{100})^2\\p^2 =\frac{9801}{1000}$

As per second equation of Hardy Weinberg's -

$p^{2} + q^{2} + 2pq=1$

Substituting the given values in above equation, we get -

$\frac{9801}{10000} + \frac{1}{100} + 2pq=1\\2pq = 1-(\frac{9801}{10000} + \frac{1}{100})\\2pq = 0.99%\\OR[tex]2pq=1$ %

$2pq = \frac{1}{100}$

Hence, option B is correct.

8 0

3 years ago

The heart valves act like doors. TrueFalse

frozen [14]

Its true as you breath your heart and lungs go in and out as if you were swinging a door open and shut letting oxgen in and out hope i could help :)

6 0

3 years ago

Shell coiling in some snails has been found to be determined by the genotype of the snail's mother, rather than its own genotype

baherus [9]

Answer:

maternal effects

Explanation:

The correct answer would be maternal effects.

The maternal effect is a genetic phenomenon that is characterized by an organism having the phenotypic expression that is compatible with the genotype of its mother irrespective of the organism's genotype itself.

This condition often occurs as a result of the mother supplying messenger RNA or protein to the egg that results in the formation of a zygote/embryo. Consequently, the genome of the mother dictates the functionality of the molecule in such offspring.

6 0

3 years ago

PLZ HELP how does the advancement of technology affect scientific models?

oee [108]

Answer:

Science and technology help each other advance. Scientific knowledge is used to create new technologies. New technologies often allow scientists to explore nature in different ways and make new discoveries. Examples of technologies that have helped science advance include the telescope and microscope.

Explanation:

hope it will help.....

4 0

3 years ago