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Leona [35]
3 years ago
12

The 2 major components of the cell membrane are ______ and _______

Biology
1 answer:
adelina 88 [10]3 years ago
3 0
The 2 major components of the cell membrane are lipids and protein
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Penicillin is an antibiotic that was discovered in 1928. Today many species of bacteria have acquired resistance to penicillin.
mr Goodwill [35]
Genetic mutation is the answer to your question
3 0
3 years ago
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In a long bone, the osteons are:
Margarita [4]

Answer:

B. lined up perpendicular to the long axis of the bone, in the direction of perforating canals.

Explanation:

Osteons are formations of concentric bone layers (lamellae) that tend to <em>run parallel to the long axis of a bone.</em> They sorround the Haversian canal, a canal that contains blood vessels that supply the osteocytes and are the structural unit of compact bone.

I hope you find this information useful and interesting! Good luck!

3 0
3 years ago
Describe how restriction enzymes and ligase enzymes are used to make the plasmids that are introduced to bacteria cells during t
balandron [24]

Answer:

DNA restriction enzymes cut the DNA molecule, while DNA ligases join the resulting DNA fragments

Explanation:

Transformation is a naturally occurring process by which bacteria incorporate exogenous genetic material from their surrounding environment. This process (transformation) is used for DNA cloning via plasmid vectors. In DNA cloning, transformation occurs after restriction enzymes cut the DNA at specific sequences named palindromic sequences (i.e, sequences that can be read the same in opposite direction). Restriction enzymes can generate sticky-ends, where enzymes make staggered cuts in the two strands (e.g., <em>BamH</em>), or blunt ends, where the resulting strands are of the same length (e.g., <em>HaeIII</em>). In general, sticky-end enzymes are more useful because they generate a 3' overhang in one molecule and a complementary 5' overhang in the other, increasing the yield and specificity of ligation. During ligation, a DNA ligase is used to join both DNA strands by forming phosphodiester bonds in the plasmid. Following transformation, bacteria can be selected on antibiotic plates.

8 0
3 years ago
Polymerization and the break down of a polymer are two opposite reactions. What role does a water molecule play in both of them?
ladessa [460]
<span>In the process of polymerization, a chain of similar smaller molecules called monomer join together to create very large molecules called polymer. Through this chemical reaction, water is created as a by-product. In contrast to hydrolysis or breaking down of polymers, a water molecule is used to break the covalent bond that hold the components of a polymer.</span>
8 0
3 years ago
The fluctuation of the water level in the small arm of the water seal with respirations is called:_________
mr Goodwill [35]

Answer: Tidaling

Explanation:

It is rise and fall of water in water-seal chamber, used to determine the degree of re expansion of the lungs. It reduction shows the lungs reexpands.

However, with respiratory efforts it is normal.

4 0
3 years ago
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