BIOLOGY HIGH SCHOOL

Gradualism is a pattern of evolution in whichA. a single species evolves into several closely related species.
B. several distantly related species develop similarities.
C. a species evolves at a slow, steady pace.
D. a species has periods of little evolution interrupted by periods of rapid evolution.

Answers

Answer 1
Answer:

Answer: The correct answer is-

C. a species evolves at a slow, steady pace.

Gradualism can be describesd as a pattern/ theory of evolution by which already existing species give rise to new species by means of slow/ gradual and steady changes instead of major and abrupt changes.  

Over long period of time, the small changes (that are beneficial for their survival) result in new species.

Example- Tiger that is evolved pattern of stripes ( which give them better advantage to hide in tall grass).

Thus, option C)  a species evolves at a slow, steady pace.  is the right answer.

Related Questions

Which of the following ideas is supported by Darwin's observations of local variation among tortoises in the Galapagos islands?A: artificial selection B: adaption C: acquired characteristics D: tendency towards perfection
Lentils, split-pea soup, chili with beans, bean burritos, limas, and other dried beans are not only calorie dense but also packed witha. protein. b. sugar. c. fat. d. water.
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Synthesis of one protein cannot take place without the presence of another protein." Is this statement true or false and why
Which of the following is one observation that darwin made as he developed his theory of natural selection

True or false streams lose velocity when they join larger streams

Answers

False. Streams lose velocity when the slope of the stream bed decreases.
True . Streams Loses Velocity When They Join Larger Bodies Of Water

A change in the natural sequence of bases in DNA structure is called a

Answers

A change in the natural sequence of bases in DNA structure is called a mutation.

  • The mutations are responsible for altering the nucleotide sequence of the DNA and can be caused due to several reasons which can be physical, chemical or intrinsic factors.
  • The effect of these mutations on the organisms can be positive (beneficial), negative (harmful) or neutral (no effect).
  • The mutations can be broadly classified into 2 categories based on the change produced in the nucleotide sequence :

1. Pointmutation - This mutation result in the change of single nucleotide in the given DNA sequence. For e.g in a sequence AGGAATC if G changes to C the new sequence would be ACGAATC and this is called a point mutation.

2. Frameshiftmutation-This mutation refers to the alteration of the open reading frame of a sequence due to insertion or deletion of several nucleotides in a sequence for e.g if you have a sequence AAATTGG and there is a deletion of AATT  you get AGG. This is an example of a frameshift mutation.
The term that you are looking for is a mutation a change in the base code of DNA (deoxyribonucleic acid)

What were Louis Pasteur's experiments related to spontaneous generation?

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Spontaneous generation was a (refuted) theory that some forms of life can arise from inorganic matter. 

Louis Pasteur refuted it in a series of experiments, in which he boiled different matter (grape juice, broth) which would kill all the bacteria and let it stay for a long time to see if it would develop life (he also had a control condition in which he let the boiled liquid interact with the outside words, and those would develop bacterial life). 

The measure of the size of a surface

Answers

Answer:

Area

Explanation:

  • The area is the extent of measurement of any given surface.
  • The surface whose extent is measured needs to be two dimensional.
  • The S.I. unit to measure the surface area is the square meter. 
  • It is very easy to measure the area of any surface and there are well-defined formulas to measure the surface area of different surfaces having varied shapes. 
The size of a surface or region is its area.

Please explain how treadmilling contributes to actin-based motility in crawling cells. Be specific in why both actin filament growth and shrinkage are necessary.

Answers

Action needs ATP. ATP is the coenzyme, which is used by the cells to transfer energy to the cell when a muscle cell demands energy to contract. ATP is short for Adenosine Triphosphate and is critical for muscles to contract. APT prepares the myosin to bind with actin - it moves the myosin to a high energy state ready to move. The myosin is the protein that converts the chemical energy, ATP, into mechanical energy. This cycle keeps on repeating itself and the muscle expands and contracts. 

Which activity would be within the field of biology?A.Measuring the size of a star
B.Measuring the growth of a bank account
C.Measuring the amount of energy used by a building
D.Measuring the rate of squirrel births in a woodland habitat

Answers

If you study biology, you should know that its goal is the study of life. So the answer is D.Measuring the rate of squirrel births in a woodland habitat

I believe the answer is: D.Measuring the rate of squirrel births in a woodland habitat


Biology comes from word "bios" which mean live and "logos" which mean study. Biology is science that study the living things. Star is not living things and it should be studied in astrology. Bank account also not living things, it should be studied in economy. Building also not living things, it should be studied in physics or engineering. Squirrel would be the only living things mentioned in the option.
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Which element's cycle depends on kinds of bacteria to keep the element available to other organisms?A. carbon B. hydrogen C. nitrogen D.phosphorus
Bacteria are named primarily on the basis of their _____.
Is an organelle living or nonliving?