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lesya692 [45]
3 years ago
12

What technological advancement was necessary before scientist could begin to observe cells?

Biology
1 answer:
Ivanshal [37]3 years ago
5 0

The technological advancement that was needed to be made before scientist began to observe cells was the invention of the microscope. I have answered this question before on here

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Sienna made a chart listing characteristics of two kinds of echinoderms.
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Answer:

all of these are echinoderms

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3 years ago
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Your ability to feel the physical enjoyment of a hot bath is most likely to be stopped by injury to your: angular gyrus hippocam
Sholpan [36]

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hippocampus

Explanation:

the hippocampus could be the likely part of the brain that is affected

8 0
4 years ago
Disulfide bonds are involved in maintaining ________ protein structure as well as the ________ level of protein structure exhibi
Whitepunk [10]

Answer:

tertiary; quaternary

Explanation:

The orientation of all the atoms of a protein in three dimensions represents its tertiary structure. It includes the folding of the polypeptide chains in a way that brings are far apart amino acids of its secondary structure close together. Various segments of a polypeptide chain interact to form tertiary structures and these segments are held together by different kinds of weak interactions.

However, disulfide cross-links between the segments of polypeptide chains also stabilize the tertiary structure of some proteins. Likewise, disulfide bonds also hold the protein subunits of some proteins together and thereby, contribute to the quaternary structure. For example, two light chains of an antibody are joined together by disulfide bonds.

4 0
3 years ago
. Which summarizes the genetic research completed by the Austrian monk Gregor Mendel?
Bond [772]

Answer:

C. Mendel hypothesized that the traits of pea plant offspring are inherited.

Explanation:

A. After years of research, Mendel identified the genes for flower colors.  False. During Mendel's research, genes were not yet discovered.

B. Mendel bred various dog breeds to discover the science of genetics.  False. Mendel worked with pea plants, not dogs.

C. Mendel hypothesized that the traits of pea plant offspring are inherited.  True. Mendel uncovered the main principles of the inheritance of simple traits.

D. Using Punnett squares, Mendel developed the principles of genetics. False. The Punnett square was invented by Reginald C. Punnett,

6 0
3 years ago
A 6-month-old has been stung on the tongue after putting a bottle in his mouth that had a bee on the nipple. in comparison to th
Juli2301 [7.4K]

Bee sting in a child is really a concern than with the adult because this would cause anaphylaxis, which is a fatal reaction of severe allergy. The effects are swelling, sweating, and pain, difficulty in breathing, dizziness and shock. In this life-threatening scenario, infant really needs immediate care for their immune system and other body organs are not yet fully develop to fight for the allergic reaction.

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3 0
3 years ago
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