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gregori [183]
3 years ago
12

Mikhail Gorbachev resigned as president of the Soviet Union in December 1991. Why? Because __________.

Biology
1 answer:
Illusion [34]3 years ago
5 0
Mikhail Gorbachev resigned as president of Soviet Union in December 1991 because the U.S.S.R. was dissolved in December 1991. He was the President of the Soviet Union from March 15, 1990 until December 25, 1991. The correct answer is A. 
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All chemical reactions require activation energy to break chemical bonds and begin the reaction. The need for activation
elena-14-01-66 [18.8K]

Explanation:

E, will be lower- this denotes the activation energy

Activation energy is the specific amount of energy required for a chemical reaction to occur. Enzymes lower the activation energy, significantly speeding up the reaction rate.

Further Explanation:

Enzymes are proteins that catalyze reactions by working on substrates to promote reactions-including amylase breakdown of broad polysaccharides. Some enzymes like catalase, allow for the degradation of hydrogen peroxide into oxygen and hydrogen; the pH, temperature, and involvement of inhibitors influence their specificity.

Learn more about cellular life at brainly.com/question/11259903

Learn more about proteins and carbohydrates at brainly.com/question/10744528

#LearnWithBrainly

6 0
3 years ago
Based on their observations and the data they collected, the Grants concluded that evolution by natural selection had occurred i
aalyn [17]

Answer:

C. Beak size is an inherited trait in the finch population under study.

D. Birds that could eat larger, tougher seeds survived and reproduced during the drought.

E. Beak size varies among the birds in the finch population under study.

Explanation:

The presence of genetic variations among the individuals of a population is required for natural selection to be operative. Natural selection targets the beneficial genetic variations present in the population. Natural selection refers to the differential reproductive and survival success of organisms of a population due to some beneficial genetic traits. These organisms with beneficial genetic traits are able to survive and leave more progeny under prevailing conditions.

If the natural selection has occurred in the ground finch population for the beak size, the beak size should be a genetic trait since natural selection works on genetic traits only. The finch population should have variations with respect to the beak size. The finches having the larger beak size that enabled them to feed on larger, tougher seeds should have higher survival and reproductive fitness during the drought.

Under these conditions, natural selection would favor the finches with larger beak size and would eventually result in an increase in the average beak size of the future generations.

4 0
3 years ago
When DNA condenses in preparation for cell division, it is called a __________.
labwork [276]

Answer:

A. chromosome

Explanation:

Chromosomes are typically what you see in a chart like karyotype that shows all the chromosomes of a particular organism. These are the highly condensed structures of DNA during replication which makes it easy to transfer DNA during replication.

8 0
2 years ago
Read 2 more answers
How has technology helped reduce the spread of infectious disease?
KATRIN_1 [288]
We can do brain scans and things that help us diagnose sickness
4 0
3 years ago
Eleration
Phantasy [73]

Answer: Positive

Explanation:Because of the gain in speed

3 0
3 years ago
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