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3 years ago

How long can perishable foods be left out at room temperature?

Biology

2 answers:

cupoosta [38]3 years ago

8 0

50 degrees outside yes

natulia [17]3 years ago

6 0

It would be 50 degrees Fahrenheit

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Whats the evolution of the microscope in timeline

Maurinko [17]

I thing it was the telescope

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3 years ago

A fishing rod is an example of a lever. Which diagram shows the correct positions of the input force, output force, and fulcrum

iragen [17]

Answer:

I looked for a picture of what you were talking about and I think I found the answer

Explanation:

If this is the picture then I think its the first choice

8 0

2 years ago

Read 2 more answers

Following repolarization, the neuron may become slightly hyperpolarized before it re-establishes its resting membrane potential.

RoseWind [281]

<h2>Membrane potential </h2>

Explanation:

Membrane potential represents charge difference across the membrane, all biological cells are negative inside (cytoplasm) and positive outside (due to difference in ionic distribution)
In a typical neuron cell membrane potential of cytoplasm is negative at rest (when no stimulus is applied) hence called resting membrane potential
Resting membrane potential of excitable cells is established by Na+ and K+pump
Repolarization starts with the efflux of K+ by the opening of voltage gated K+ channels
Voltage gated K+ channels starts to open when voltage gated Na+ channels becomes inactive
Hyperpolarization occurs due to excessive efflux of K+ by voltage gated K+ channels
Additional efflux of K+ occurs due to slow inactivation of voltage gated K+ channels

3 0

3 years ago

What would be a possible disadvantage of asexual reproduction?

shepuryov [24]

Answer:

Susceptible to same diseases.

Explanation:

I just answered something along these lines.

4 0

2 years ago

1. What are Chargaff's rules?

kotegsom [21]

1)Chargaff's rules state that DNA from any cell of any organisms should have a 1:1 ratio of pyrimidine and purine bases and, more specifically, that the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine. This pattern is found in both strands of the DNA.

2)DNA structure

DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determines DNA's instructions, or genetic code.

3)A nucleotide consists of three things: A nitrogenous base, which can be either adenine, guanine, cytosine, or thymine (in the case of RNA, thymine is replaced by uracil). A five-carbon sugar, called deoxyribose because it is lacking an oxygen group on one of its carbons. One or more phosphate groups.

4)DNA replication is said to be semi-conservative because of this process of replication, where the resulting double helix is composed of both an old strand and a new strand. ... Semiconservative replication would produce two copies that each contained one of the original strands and one new strand.

5)The diagram has show in above.

6)complementary base pairing is necessary because the double helix shape would not be the same if not. Doubles would only pair with doubles and the singles to singles.

HOPE THIS HELPS YOU.

7 0

3 years ago