BIOLOGY HIGH SCHOOL

Which of the following is a particle with a positive electrical charge?Protron
Electron
Positron
Neutron

Answers

Answer 1
Answer:

Answer:

Protron

Explanation:

Every proton has a positive charge, every electron has no charge, and every neutron has no charge. There is no such thing as a positron. I hope i help! :)

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A plant's cell wall is made of cellulose fibers. What is the purpose of a plant's cell wall?

Answers

It allows the plant to stand upright.
The purpose of a cell wall within a plant cell is to provide the cells with protection and structure. It allows also allows the plant to grow tall and strong, cell walls act like a shield and a spine for a plant.

Which statement correctly describes the way that almost all organisms in the kingdoms Plantae and Animalia obtain nutrients?Plants are autotrophs, and animals are heterotrophs.

Plants are heterotrophs, and animals are autotrophs.

Both plants and animals are autotrophs.

Both plants and animals are heterotrophs.

Answers

Answer:

plants are autotrophs, and animals are heterotrophs

Explanation:

autotroph produces their own food while heterotrophs depends on something.

Answer:

A. Plants are autotrophs, and animals are heterotrophs. Explanation:

Describe how the frog uses its front and hind legs to jump

Answers

 All frogs have short front legs and large strong hind legs for jumping . The hind feet are webbed, and most frogs are fast swimmers.

Genetically modified foods can contain genes from different, unrelated organisms. true or false.

Answers

Answer:

True

Explanation:

Because the genetic code is universal and the DNA molecule is the same for all living organisms, an organism can be genetically modified by introducing a gene from a different organism (called a transgene).

An example of this are Bt crops. Scientists isolated from a bacteria (Bacillus thuringiensis, Bt) a gene that produces a toxic protein that kills insects. Then, they modified crops such as cotton and corn by inserting this gene, and plants that express it can resist being eaten by insects (because when insects try to eat them they die due to the toxin).
This is true, cuz this food is modified inGENETIC

The principles of probability can be used toA. decide which organisms are best to use in genetic crosses.

B. predict the traits of the offspring of genetic crosses.

C. determine which species should be used in genetic crosses.

D. determine the actual outcomes of genetic crosses.

Answers

Answer:

Option B, predict the traits of the offspring of genetic crosses

Explanation:

Lets see an example -

Suppose there are two adult cats , where female cat has brown (BB)haired and it is a dominant trait while male cat is recessive grey (bb) haired organism.

If a cross is carried out between these two species then through probability it can be derived that how many species will be grey (Bb) haired

Let see the punnet square for the cross-

B B

b Bb Bb

b Bb Bb

Thus out of four offspring’s produced all the offspring’s are grey (Bb) colored. Thus, there is a 100% probability that if a cross is carried out between female cat having brown hair (BB) and a male cat having black hair (bb), the offsprings will have grey (Bb) hair.

In this way probability can help to predict the traits of the offspring of genetic crosses

The laws of probability can be applied to genetics to make predictions about the traits of the offspring that result from genetic crossings. Therefore, the correct option is B.

Probability enables us to calculate the likelihood that specific characteristics will be inherited, based on the known genetic information of the parent organism. Scientists can predict the possible combinations of genetic characteristics in offspring by understanding the principles of heredity and applying probability calculations.

Probability can forecast and infer, but it cannot predict the actual results of genetic crosses because these are affected by various processes, including random segregation during meiosis and genetic recombination.

Therefore, the correct option is B.

Learn more about Probability, here:

brainly.com/question/31828911

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What is the the outer boundary of the cell of an animal called?a. Wall
b. Gate
c. Nucleus
d. Membrane

Answers

D. Membrane. Can also be called cell membrane so you don't get confused with the nucleus's membrane/envelope!
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