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2 years ago

Please help, will mark brainliest if answered correctly.

Biology

2 answers:

cricket20 [7]2 years ago

4 0

Probably because of history relation.

Musya8 [376]2 years ago

4 0

Because of history repeats itself and because of ancestors we all are related somehow

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Look at the following, and decide if they are carbohydrates or not.

Aliun [14]

Answer:

A. C4H8C4 - NOT

B. C12H12C4 - NOT

C. CóH1206 - yes

D. C4H2020 - NOT

Explanation:

Carbohydrates are one of macro molecules made up of carbon, hydrogen and oxygen. These are essential molecule as they provide nutrition and makes structural component in plants too.

The ration of carbon, hydrogen and oxygen is similar in almost every sugar or carbohydrate which is 1:2:1, one carbon molecule and one oxygen molecule per two molecule of hydrogen.

In choice A, and B have no oxygen molecule so they can not be carbohydrate, where as D have inappropriate ration in comparison to the carbohydrates.

Thus, the correct answer is :

A. C4H8C4 - NOT

B. C12H12C4 - NOT

C. CóH1206 - yes

D. C4H2020 - NOT

4 0

3 years ago

How would the introduction of predator species affect the stability of the ecosystem

Elza [17]

Introducing a predator means there will be less prey which will help balance the population of prey. Some predators may run out of food and there might be no prey left for them. If the prey were removed the predator population would decline.

4 0

3 years ago

Read 2 more answers

4. What genotypes of parents will have only white-fur offspring? Parent 1 genotype = Parent 2 genotype = What genotypes of paren

AnnZ [28]

Answer:

All white offspring: Parent 1 genotype = homozygous dominant

Parent 2 genotype = homozygous/heterozygous dominant

For all black offspring: Parent 1 genotype = homozygous recessive

Parent 2 genotype = homozygous recessive

Explanation:

The cross was between a white mouse and a black mouse and the phenotypic ratio of the resulting offspring is 50% white and 50% black.

Assuming that fur color in the mouse is represented by the allele A (a), In order to give 1:1 phenotypic ratio of the offspring, it means the white mouse is heterozygous with Aa genotype and the black mouse is homozygous with aa genotype. Also, it means that the allele A is dominant over the allele a.

Aa x aa

Aa Aa aa aa

Aa = white

aa = black

Ratio of white to black = 50/50 or 1:1

Hence, in order for a cross to yield only white offspring, the parents can either be homozygous AA and AA or one will be homozygous AA and the other will be heterozygous Aa.

1. AA x AA

AA AA AA AA (all white offspring)

2. AA x Aa

AA Aa AA Aa (all white offspring).

In order to produce only black offspring, both parents must be homozygous aa.

aa x aa

aa aa aa aa (all black offspring)

4 0

3 years ago

Eleanor is testing how temperature affects the hatching of chicken eggs. She has three groups of eggs, one each at 25°C (77°F),

Sever21 [200]

It's then independent variable.

This is the case because Eleanor is making these temperature changes.

Extra info.

The dependen variable would then be the result of hatching. This is the case because it depends on the different temperature to see what the effect of temperature change is affecting the time of hatching

8 0

3 years ago

Which of the following is not a function of astrocytes?guide the migration of young neurons, synapse formation, and helping to d

Alinara [238K]

Answer: E) provide the defense for the CNS

Explanation:

Astrocytes can be defined as one of the cell types in the central nervous system. These are the dominant glial cell found in the brain. These cells perform a variety of functions in the brain. The functions includes axon guidance, synaptic support, controlling the blood brain barrier and blood flow. These cells maintain the chemical environment in the brain especially around the neuron.

These cells do not provide to the central nervous system.

8 0

2 years ago