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gulaghasi [49]
2 years ago
6

Help me please I’m takin a test Earth and space

Biology
2 answers:
sergeinik [125]2 years ago
6 0
I feel as if that Answer is D
dexar [7]2 years ago
4 0
Old river, you can see from the height of the sides that the water has weathered the rock away
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A 10-7 is performed on a culture of bacteria in order to perform viable plate counts. From the dilution, *0.1 mL* of solution is
marishachu [46]

Answer:

66 * 10^8 CFU/mL

Explanation:

Given -

a) Number of colonies of bacteria is equal to 66

b) Total volume of the solution is equal to 0.1 mL

c) Dilution factor is equal to 10^{-7}

As we know that

CFU/mL = \frac{N * DF}{V}

Where N is the number of bacterial colonies, DF is the dilution factor and V is the volume

Substituting the given values in above equation, we get -

CFU/mL = \frac{66* 10^7}{0.1} \\= 66*10^8

5 0
3 years ago
_____ provides a mechanism by which the chromosome number may be kept the same from one generation to another. Mitosis Meiosis N
Setler [38]
Answer: mitosis.

During DNA replication a pair of chromosomes of from one cell genders two duplicated chromosomes (so the number of chromosomes is duplicated), then in the mitosis process the cell split into two identical cells each with half of the duplicated chromosomes, so at the end one cell with two chromosomes form two cells each with two chromosomes. So, the new generation of cells has the same number of chromosomes.
5 0
3 years ago
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17. Which of these processes is the result of the motion of particles in a gas or liquid?
BartSMP [9]

Answer:

B

Explanation:

4 0
3 years ago
When thinking about genotypes and phenotypes, which is the cause and which is the effect?
Aleksandr [31]

Answer:

A particular genotype does not necessarily guarantee a particular phenotype. Understanding what factors can change this expression is quite complex.. What is what i believe that above statement meant.

Explanation:

Error is the stochastic variation associated with a particular observation of the phenotype (and is managed by use of replication and and appropriate experimental design). The phenotype is the result not only of the average effect of the different alleles at a given locus across test units and across environments, but is impacted by the interaction between the different alleles and the environments (including genetic backgrounds) in which they are evaluated. Phenotype is not simply the sum of the genotype effect and the environment effect, as indicated in the mathematical formula that you provide.

Hope I Helped!!!

4 0
3 years ago
Describe the structure of a chloroplast. How do the inner membranes differ from the outer membranes?
Ostrovityanka [42]

Answer:

the outer membrane has small organic molecules but the inner membrane is less permeable and studded with transport proteins.

Explanation:

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3 years ago
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