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2 years ago

Is human skull prokaryotic or eukaryotic?

Biology

2 answers:

Alenkasestr [34]2 years ago

8 0

Answer:

eukaryotic

Explanation:

ziro4ka [17]2 years ago

7 0

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The human skull is Eukaryotic .

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Drag each tile to the correct location on the table.

RideAnS [48]

Answer:

Kidneys : helps in forming urine

Ureter : They are connected to kidney and by peristaltic action transports urine from kidneys to bladder .

Urinary bladder : It is an hollow sac that holds the urine .

Urethra : transports urine from the bladder to outside of the body .

Explanation:

The human excretory system consists of : Kidney ,ureter ,urinary bladder and urethra .The figure is shown below .

Now , as far as functions are concerned we have :

Kidneys : They have excretory units called nephrons that further consist of :

Bowman's capsule
PCT (Proximal convoluted tubule )
DCT (Distal convoluted tubule)
CT (collecting tubule )

In nephrons urine is formed and via ureter it is transported to a hollow sac like structure called urinary bladder .

This bladder has muscles that cant remain contracted up to longer period )and then voluntary and involuntary it is excreted through urethra .

The process of passing urine is called Micturition .

6 0

3 years ago

Read 2 more answers

When Mendel crossed the pollen from a plant with green pods with a plant with yellow seed pods, all of the offspring had green s

aleksley [76]

Answer:

True

Explanation:

Let the allele for green color of pods be G

and the allele for yellow color of pods be g

Phenotype of true breeding parent with green colored seeds is GG

Phenotype of true breeding parent with yellow colored seeds is gg

In F1 cross

GG mates with gg

Genotype of offspring - Gg

Phenotype of offspring - Green seed

Since the offspring has both the allele for green and yellow seeds color but yet only green is expressed. This indicate that green allele dominated the expression of yellow allele thus, it can be concluded that green seed pods were dominant over yellow seed pods.

8 0

2 years ago

In the term trace element, the adjective trace means that

Margarita [4]

Answer:

The elemental is required in very small amount. (Ans. A)

Explanation:

Trace element is also known as micro-nutrient. It is also defined as any chemical element required by living organisms in a minute or small amounts which is usually part of the vital enzyme (cells produced by catalytic protein).

Exact needs of trace elements vary among species, like commonly required plant trace elements are cooper, zinc, manganese, boron, and molybdenum. Animals commonly required iodine, manganese, and cobalt.

Absence of necessary plant trace elements required by plants in the soil causes deficiency disease, lack of animal trace elements used by animals in the soil may not harm plants, but, animals feeding on those plants develop their deficiency disease.

So, the adjective trace means that the elemental is required in a very small amount.

7 0

3 years ago

Which of the following best describes a benefit of studying biology.

never [62]

One is able to intelligently debate issues.

7 0

3 years ago

The students concluded that pea plants grew better in compost than did melon plants. Which of the following best addresses the v

musickatia [10]

Answer:

c. The conclusion is invalid because other variables in the experiment affected the results.

Explanation:

Consider the complete problem:

A group of students designed an experiment to determine the effect of compost on the germination and growth of plants.

The students set up experimental plots by mixing different ratios of soil and compost. They planted 20 pea and 20 melon

seeds in each plot and watered each plot regularly. The students recorded the number of seeds that germinated, and as the

plants grew they recorded the plant length, number and size of leaves, and general health observations.

The following observations were recorded.

 In all treatments, more pea seeds germinated than melon seeds

 There was a week of rainy weather at 3 weeks

 Melon plants developed a fungal growth at four weeks

 Melon plants grew longer than pea plants, but many melon leaves showed signs of yellowing as the weeks passed

The students concluded that pea plants grew better in compost than did melon plants. Which of the following best

addresses the validity of the conclusion made by the students?

a. The conclusion is valid because the independent and dependent variables in the experiment were controlled.

b. The conclusion is valid because the experimental design included a large sample size.

c. The conclusion is invalid because other variables in the experiment affected the results.

d. The conclusion is invalid because the units of measurement were not given in the experimental design.

In order for the conclusion to be valid, all the independent variables should have been controlled. In this case, the independent variables such as the amount of water received by the plants, nutrient requirement of the plants, etc. were not controlled leading to fungal attack on the melon plant.

Hence, the conclusion is invalid because other variables that ought to have been controlled affected the experimental outcome.

The correct option is c.

4 0

3 years ago