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Andreas93 [3]
3 years ago
4

The purpose of this exercise is to demonstrate the comparative effect of uv on two (or three) bacterial populations. this could

have been accomplished without the cardboard cover. why was the cover used?
Biology
1 answer:
horrorfan [7]3 years ago
4 0

Probably to make a wet and dark environment because bacteria like to grow in wet dark places much like your armpit its dark and when you get sweaty it gets wet so that why it smells

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The decimal reduction time (DRT) to kill 90% of cell present for autoclaving a culture is 1.5 minutes. How long would it take to
-BARSIC- [3]

Answer:

10.5minutes

Explanation:

DRT = 90%

Cells present = 10^6

Autoclaving = 1.5 minutes

Solution:

10^6(1.5)10^5(1.5)10^4(1.5)10^3(1.5)10^2(1.5)10^1(1.5)10^0(1.5)0=10.5

it would take it approximately 10.5 minutes to kill 10^6 of the cells.

If i should stop the heating process at 9 minutes this would have effect on some of the microbes as they are still present with 1 bacterium left which makes it not efficient.

XR

3 0
3 years ago
All chemicals in the lab are to be considered dangerous true or false
Advocard [28]
The answer to your question is true.
7 0
4 years ago
for a particular flower the allele for red is domonaniant the allele for white is ressivepunnent square
Papessa [141]

Answer:

The correct answer will be option-The red and white flower alleles are co dominant.

Explanation:

The Mendel suggested that for any trait, the organism contains its alleles which could be dominant and recessive. But there are cases in which multiple alleles exist for the same trait which are neither dominant nor recessive.  

Two cases arise due to this in which both the dominant alleles co-exist and show their phenotype effect called "co-dominance" and when both alleles form a new phenotype called 'incomplete dominance".

In the given case, the self-pollination produces red, white and patched flowers as a result of co-dominance because both the alleles show the equal effect on the flower petals (mixed phenotype) and form a flower with red patches or spots on the flower.

Thus, the selected option is the correct answer.

4 0
2 years ago
What is the term for different “jobs” that different cells perform in a multicellular organism? A. functions B. systems C. level
mylen [45]
Functions. this is the very idea behind differentiation.<span />
3 0
3 years ago
Read 2 more answers
The glenoid cavity is where the Select one: a. clavicle articulates with the scapula. b. clavicle articulates with the sternum.
kati45 [8]

Answer:

The glenoid cavity is where the d. humerus articulates with the scapula.

Explanation:

The scapula is the bone that contains the glenoid cavity. The glenoid cavity is a part of the shoulder. This cavity forms the glenohumeral joint along with the humerus. The Humerus is a long bone of the upper arm, and the scapula articulates with this bone to form a ball and socket joint at the shoulder. These are all bones forming the shoulder girdle and upper extremities.

4 0
4 years ago
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