Most of the energy resources used to generate electricity are renewable true or false

This diagram shows a plant cell. Which of these statements about plant cells must be true?

Darya [45]

Answer:

I think the answer is a plant cell contains one large vacuole in its wrong because they have a nucleus I did not all plants have the same size or shape and they only have one large vacuole or sap vacoule hope it helps

5 0

3 years ago

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What are the functions of the male reproductive system?

Neporo4naja [7]

Correct answer: B) Production of gametes and hormones

The male reproductive system include a number of sex organs that play an important role in the human reproduction. All the male organ are located either on the outside of the body or within the pelvic region.

Male reproductive system includes external genital organs and internal genital organs . The external genital organs consists of penis, scrotum and internal genital organs include epididysis, accessory gland and vas deferens .

The main function of male reproductive system is the production and secretion of male sex hormones like testosterone which is required to maintain male reproductive system. It help in the production and transportation of sperm and discharge them in to the female reproductive system at the time of intercourse.

5 0

4 years ago

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Why is the extensive folding in the endoplasmic reticulum important?

kirza4 [7]

The rate-limiting step for the secretion of secretory proteins or the appearance at the plasma membrane for membrane protein is generally thought to be the rate of exit from the ER. Biosynthesis in or at the ER, including folding, modifications, and assembly, hence is the most crucial step for efficient secretion.

6 0

3 years ago

In a population of 10,000 individuals of Monstera deliciosa, four individuals have a variegated phenotype that is caused by the

Mariulka [41]

Under the assumption of this population being in Hardy-Weinberg equilibrium, the probability for the fixation of the var recessive allele equals 0.02 = 2%

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Available data:

N = 10,000 individuals ⇒ Large population

4 individuals have a variegated phenotype

variegated phenotype is caused by the recessive var allele

No selection, no additional mutation ⇒ we can assume Hardy-Weinberg equilibrium

We need to know the probability for the fixation of the var allele.

We assume that the population is in Hardy-Weinberg equilibrium, so there should be no evolution.

Since the population is in H-W equilibrium, the allelic, genotypic and phenotypic frequencies will remain the same generation after generation.

Now, we will calculate the allelic and genotypic frequencies of variegated individuals in the population.

There are 10,000 individuals, and only 4 have variegated.

So, the phenotypic frequency, F(Var) is 4/10,000 = 0.0004 = 0.4%

Since this is a recessive phenotype, this value equals the genotypic frequency, F(vv) = 0.4%

Finally, we can get the allelic frequency by taking the square root of this value.

F(vv) = q² = 0.0004

f(v) = q = √0.0004 = 0.02 = 2%

According to these calcs, the probability for the fixation of the var allele is 2%, and the probability that all individuals express the variegated phenotype is 0.4%.

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You can learn more about Hardy-Weinberg equilibrium at

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3 0

3 years ago

In the picture shown below A represents a characteristic of only geocentric model, B represents a characteristic common to both

inysia [295]

Answer: