BIOLOGY HIGH SCHOOL

Unlike in prokaryotic cells, replication in eukaryotic cellsa. is continuous in two directions until the whole chromosome is copied.
b. involves much less DNA.
c. can start in many different places on a sequence at the same time.
d. starts from a single point.

Answers

Answer 1
Answer: a. is continuous in two directions until the whole chromosome is copied.

The two identical daughter cells resulting from mitosis and cytokinesis are identical in the following ways:1. Mitosis occurs when the nucleus of the cell divides into two identical nuclei, each with the same type and number of chromosomes. The cell's DNA is duplicated during this phase. Sometimes the cell's DNA isn't copied properly resulting in cancer-type cells. 2. Cytokinesis is when the cytoplasm divides into two identical daughter cells. Each cell is genetically identical and both are a similar size. 

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In which organelle does the chemical process of photosynthesis occur? mitochondria nucleus
chloroplast
endoplasmic
reticulum

Answers

chloroplast, in the plant cell the chloroplast is where photosynthesis takes place
I believe the process occurs in the Chloroplast

Explain the relationship between adaptation natural selection & evolution

Answers

Adaptations are the result of evolution in different living organisms. This process occurs amazingly through gene mutation but it takes a very long period in time. Adaptation processes occur to help species survive and thrive in the ecological balance of life. Structural adaptations are physical features of an organism that adapted through time. An example of this are the bills of a bird and the fur of bears that they generally need for their survival; birds for hunting, and bears to protect them from low climate areas.

Natural selection is a process by which organisms better adapted to their environment tend to survive, reproduce, increase in number, and pass their traits to succeeding generations. Adaptations are inherited or learned traits that increase an organism's chance of survival in an environment. Evolution is a process of change in a population through genetic variation over time. Natural selection drives evolution.

Why is it important for scientists to classify a newly discovered species?

Answers

for study to see how they adapt to their envierment

100 points must answer two questions and be sure of answer.A team of scientists is researching the relationship between the two subspecies of A. africanus and concludes that the subspecies were actually different species. Which of the following would increase the reliability of this conclusion?
A. second group of scientists finding significant differences in the DNA of the two different subspecies
B. Providing a description of the methods used in their experiments that led to the conclusion
C. Finding the two different subspecies of the species in different geographic locations
D. Publishing their research in order to make their findings available to the public

Organism A shares 50% of its DNA sequences with organism B, while organisms B and C share 90% of their DNA sequences. What can be concluded from this?
A. Organisms B and C are probably full siblings while organism A is a grandparent of both.
B. Organism A is more ancient than either organism B or organism C.
C. Organisms B and C are more closely related to each other than they are to organism
D. Organism A has suffered more mutations than organisms B or C.

Answers

A. second group of scientists finding significant differences in the DNA of the two different subspecies

D. Organism A has suffered more mutations than organisms B or C.

Hope this helps!
My answers got deleted some how....
1. A
and 
2.D

What is the definition of RNA?

Answers

It is a nucleic acid and plays a role in transferring information from DNA to protein. 

Which traits are characteristic of multicellular organisms? Choose all answers that are correct.a. different cells for different functions
b. develop into specialized cells after they are formed
c. all cells are smaller than those of single-celled organisms
d. all cells are the same size and shape

Answers

It would be : a, b.

C isn't correct, has a cell from a multicellular organism can be smaller than one of a single celles organism. 

d. cells are obviously not all the same size and shape, otherwise they wouldn't be able to be specialized and serve different functions.
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