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Sliva [168]
3 years ago
6

The activation energy needed for a chemical reaction is decreased by a

Biology
1 answer:
Mars2501 [29]3 years ago
5 0
A catalyst decreases the activation energy and increases reaction rate that is needed.
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4) Matching.<br><br> A new genetic trait can result from the___of chromosomes during____.
nydimaria [60]

Answer:

A trait is any gene-determined characteristic and is often determined by more than ... by mutated genes that are inherited or that are the result of a new gene mutation. ... A karyotype is a picture of the full set of chromosomes in a person's cells.

Explanation:

6 0
3 years ago
1.) A person walks 12.5 km in 1.9 h. What is the person's<br> average velocity in km/h and m/s?
Artemon [7]

Answer:

1. 6.56 km/hr

2. 1.83 m/s

Explanation:

The average velocity/speed can be calculated using the formula;

Average speed/velocity = distance/time

According to the information provided in the question, distance = 12.5km, time = 1.9h

Average velocity in km/hr = 12.5/1.9

= 6.578

= 6.56km/hr

However, in order to calculate the average speed in m/s, we have to convert distance in km to m, and time in hour to seconds.

1km = 1000m

12.5km = 12.5 × 1000

= 12500m

1 hour = 3600seconds

1.9hours = 1.9 × 3600

= 6840seconds

Average velocity = 12500/6840

= 1.827

= 1.83m/s

7 0
3 years ago
The McDonald Kreitman tests of genes in the human and chimpanzee genomes showed many with an excess of nonsynonymous variation w
kondaur [170]

Answer:

A mutation may be bad and good depending on the particular environmental conditions

Explanation:

For example, the falciform anemia is a hereditary disease caused by a mutation where the ability to transport oxygen of red blood cells is reduced; however, this genetic disorder is widespread in some African populations because it is a condition that confers resistance to falciparum malaria. In consequence, falciform anemia is a detrimental mutation that may also be beneficial in endemic malaria regions.

Moreover, it is important to note that the higher proportion of non-synonymous substitutions are not subject to selection (only a minor percentage are positively selected) because they are generally localized within non-coding regions, thereby having neutral status.

3 0
3 years ago
The numbers in the food chains shown here represent the amount of oil droplets consumed. Which food chain best shows the results
viva [34]
Copepods will be the least effected by the oil spill.

Therefore I believe the correct answer should be Copepods 10 arrow pointing right Seahorse 1,000 arrow pointing right Stingray 2,500

Good luck! Hope this helps!
8 0
3 years ago
Correctly complete the statement with the appropriate term.
Maksim231197 [3]

Answer: Aquatic

Explanation:

7 0
3 years ago
Read 2 more answers
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