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umka2103 [35]
3 years ago
5

I NEED HELP PLEASE ASAP/Abigail's toaster produces 50 units of heat and 5 units of light for every 100 units of electricity it u

ses. What is the efficiency of her toaster?
5 percent
45 percent
50 percent
55 percent
Biology
1 answer:
Svet_ta [14]3 years ago
8 0
The answer would be 55 percent
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Signal transduction: .
34kurt

Answer: a) relies on the uptake of an external signal molecule from the cell

Explanation: Signal transduction is known as the transmitting of any signal of a molecule from exterior of cell to interior of cell.This technique is termed as critical is taken care of successful transmission of signal effectively and positive result and reception is done by the cell surface receptors.It is also known as cell signalling. Thus,option(a) is the correct option of all.

4 0
3 years ago
God PLEASE help. What does surface area-to-volume ratio, diffusion rate, and time for substances have anything to do with reachi
sasho [114]

Answer:

Surface area to volume ratio, in simple means the size of surface area to the volume of substance that can pass through it at a particular time.

Amoeba and some bacterias are flat and have large surface area to volume ratio. So the diffusion rate is very high due to large surface area.

Where as humans have small surface area: volume so diffusion is very slow or does not take place at all.

Explanation:

As the ratio gets smaller, it takes longer for items to diffuse.

Explanation:

When the cell increases in size, the volume increases faster than the surface area, because volume is cubed where surface area is squared.

When there is more volume and less surface area, diffusion takes longer and is less effective. This is because there is a greater area that needs to receive the substance being diffused, but less area for that substance to actually enter the cell.

this is actually why cells divide. When they become too large and it takes too long for them to transport materials across the cell, they lose efficiency and divide in half to raise the surface area to volume ratio.

I HOPE TGIS HELPS PKEASE MARK ME AS BRAINLIEST

4 0
3 years ago
Help please! DNA Assignment
vovangra [49]

Answer:

DNA Replication:

Replicate the following strand of DNA:

Original DNA: A T G A A C CA T T C A G T A T G G

Complementary DNA:

Remember that the complimentary base pairs in DNA are Adenine-Thymine and Guanine-Cytosine, or A-T and G-C. This means that if the original sequence is:

A T G A A C C A T T C A G T A T G G

Then the compliment is (replace with the opposite base pairs):

T A C T T G G T A A G T C A T A C C

Transcription:

Transcribe the DNA to make an mRNA molecule

COMPLIMENTARY DNA:

mRNA Molecule:

So if our complimentary DNA (antisense stand) is T A C T T G G T A A G T C A T A C C then to transcribe, we basically create another complimentary strand, but for mRNA, we use Uracil instead of Thymine:

A U G A A C C A U U C A G U A U G G  

Translation:

Translate the mRNA into the corresponding amino acids.

mRNA MOLECULE:

AMINO ACID:

Using the DNA sequence provided, determine the amino acids.

Next, take each codon (3-base set) to the table and record the corresponding protein:

A U G = Methionine (start)

A A C = Asparagine

C A U = Histidine

U C A = Serine

G U A = Valine

U G G = Tryptophan

ORIGINAL DNA: A T G G G T C T A G C G A A A G A T

Complementary DNA:

mRNA DNA Molecule:

Amino Acid:

And we do it all again:

A T G G G T C T A G C G A A A G A T = original DNA

T A C C C A G A T C G C T T T C T A = complementry DNA

A U G G G U C U A G C G A A A G A U = mRNA

A U G = Methionine (start)

G G U = Glysine

C U A = Leucine

G C G = Alanine

A A A = Lysine

G A U = Aspartate

Explanation:

4 0
3 years ago
Two months after her husband's death, Connie was still not herself. She often forgot to feed the dog, was late for work on a reg
babymother [125]

Answer:

The correct answer is: major depressive disorder.

Explanation:

Major depressive disorder, commonly known as depression, is a mental condition that is characterized by <u>continuous internal pain, low mood, low self-esteem and loss of interest in activities that were enjoyable before</u>.

This disorder can be heavily discapacitating as it can interfere in normal life and work-life as well, while also producing abnormal eating and sleeping habits.

Connie has lost her husband a few months ago and she is not recovering from the pain that it caused her, which makes her deeply unhappy, not interested in anything and incapable of performing common tasks on her daily life. These are all symptoms of depression.

3 0
3 years ago
What is true for DNA but not for RNA? (PLEASE GIVE AN ACTUAL DIRECT ANSWER)
ZanzabumX [31]

hi!

the first and third ones are the answer

rna only has one strand

rna doesnt have thymine but it is replaced with uracil

3 0
3 years ago
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