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Vikki [24]
2 years ago
13

The first true antibiotic was __________, which was discovered by __________. View Available Hint(s)for Part A streptomyces; Sel

man Waksman penicillin; Alexander Fleming arsenic compounds; Paul Enrich sulfanilamide; Gerhart Domagk
Biology
1 answer:
Ilia_Sergeevich [38]2 years ago
8 0

Answer:

penicillin, Alexander Fleming

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_____ in tropical countries will cause many more extinctions per acre than it would in higher latitudes
Digiron [165]

Answer:

The Answer is likely D, none of the above because all of these would cause damage in any area, however, climate change is what deals the most damage to tropics due to the fact that the already hot tropical climate is getting even hotter, which can cause rivers and what not to dry out, whereas though climate change is a big problem around the world, it is least apparent in the southern hemisphere, and not nearly as apparent in the northern hemisphere when you compare it to research in the equatorial region.

(Please note that this answer is more of a matter of my own opinion than anything, and under most circumstances, none of the above would be wrong. Please do not hold it against me if this answer is wrong. If it is wrong, then the answer would probably be A)

8 0
3 years ago
The forward and reverse PCR primers used for the amplification of a VNTR locus on chromosome number 4 are 20 bases and 21 bases
zimovet [89]

The repeats which occur together on a chromosome are referred to as VNTR. The length of each repeat is 60bp.

The first primer is 20bp and is 53 bp away from 1st repeat. Therefore, the total length of sequence amplified by the first primer till 1st repeat = 20+53 = 73bp. Beyond this point 6 repeats on 60 bp are present, hence, the length becomes = 73 + (60X6) = 433bp.

Now the reverse primer which is 21bp in length is located 28bp from the repeat on its side. Reverse primer comes from the opposite direction, so it must be present after the 6 repeats.

The total length of the amplified region = 433 + 28 + 21 = 482 bp.

5 0
3 years ago
Within a plant cell, the glucose formed as a result of
Mademuasel [1]

Answer:

an energy source during cellular respiration

3 0
2 years ago
When there is a close relationship between two species that benefits at least one of the species, this is called _______.?
vodka [1.7K]
Answer:  "symbiosis" ;  or,  a "symbiotic relationship" .
_____________________________________________________________
6 0
3 years ago
A plant population produces many seeds. that if a population of plants is currently 30 individuals, and rmax= 12 plants/month, t
LiRa [457]

Answer:

\frac{dN}{dt} = 14130

Explanation:

Logistic growth is a measure of continuous growth of a population of individuals in such an environment where the resources are limited. Such type of growth pattern has a characteristic growth curve which is S-shaped or sigmoidal.

The equation for logistic growth is as follows -

Change in population size = \frac {dN}{dt} = rN(K- \frac {N}{K})

Where,

N = size of population

r = intrinsic rate of increase

K = carrying capacity

The values of r, N and K are given in the question as 12, 30 and 40 respectively.

So,

\frac{dN}{dt} = 12 \times 30(40 - \frac{30}{40}) = 14130

5 0
2 years ago
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