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attashe74 [19]
3 years ago
5

He correct method of removing a glass stopper is to grasp it _______.

Biology
2 answers:
Yanka [14]3 years ago
7 0
The correct method of removing a glass is to grasp it between the second and third finger.
Inserting and removing glass tubing from rubber stoppers can be dangerous; therefore its is important to always protect ones hand using towels, or cotton gloves. If a piece of glassware is stuck in a stopper then one should ask for assistance from their teacher.
Fantom [35]3 years ago
4 0

Answer: between the second and third finger

The correct method of removing a glass stopper is to grasp it between the second and third finger with the help of the thumb. If the glass stopper is stuck, you can use the tap method by using many gentle tap and keep on turning the flask. Another technique is to put oil or use a flame to expose it to heat.

 

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20 heterozygous purple flowering pea plants are crossed. If purple is dominant over white, what are the expected phenotypic resu
Elenna [48]
Let's call the colour alleles C for dominant purple, and c for recessive white.

We have crossed Cc with Cc.  So if we put that in a Punnett square, we'd have a CC, two Cc and a cc.  That would give us a 3:1 ratio of purple to white, so you'd expect 15 purple and 5 white flowers. :)
3 0
3 years ago
What is the difference between dicot roots and monocot roots
kvasek [131]

The monocot is the plant that has only one cotyledon in the embryo, whereas dicot is the plant that has two cotyledons in the embryo. ... The other big difference between the monocot roots and dicot roots is the presence of some xylem and phloem. In monocot roots, the xylem and phloem are numerous in numbers.

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3 years ago
Insect hormones and their receptors ________. A. act independently of each other B. are a focus in pest control research C. util
Leokris [45]

Insect hormones and their receptors are a focus in pest control and research. Hence, Option B is correct.

Some of the insect hormones such as ecdysone (molting hormone), JH (juvenile hormone) and their analogs can be used for biological  control of pests.

Option A: Hormone receptors are proteins that bind hormones and form hormone receptor complex to maintain cellular activities.

So Option A is incorrect.

Option B: Some of the peptide hormones used in pest control and research. So Option B is correct.

Option C: Peptide hormones interact with only cell surface whereas aminoacid derivatives and thyroid hormones directly interact with nucleus. so Option C is incorrect.

option D is incorrect.

Learn more on hormone receptor complex here:

brainly.com/question/15241630?utm_source=android&utm_medium=share&utm_campaign=question

#SPJ4

3 0
1 year ago
Based on the timeline, about how many years ago could the oldest mammalian organism have lived?
diamong [38]
200 millons years.
Hope this helps!
8 0
3 years ago
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What do sclerenchyma and collenchyma have in common? They are both thin-walled. They are both dead cells. They both function for
kakasveta [241]

Answer:

They both function for support

Explanation:

Collenchyma cells gives support to extra structural regions as well as sclerenchyma are responsible for the support of plants.

5 0
3 years ago
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