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levacccp [35]
3 years ago
7

What is biology and its branches?

Biology
1 answer:
sergeinik [125]3 years ago
5 0

Biology is the study of life and living organizations. And some branches include zoology, ethology, entomology, and herpetology. There is many, it’s an easy google search.

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How does a cell at the end of the first phase of the cell cycle differ from a cell at the end of the second phase
gtnhenbr [62]
I don't know maybe it is a white blood cell
6 0
3 years ago
Why are there only 20 amino acids when there are 64 variants of triplets?
Montano1993 [528]

Answer:

The genetic code is degenerate.

Explanation:

The genetic code is degenerate: there are 64 triplets of different codons (sequence of three bases of mRNA that codes for a certain amino acid) and 20 amino acids. That is, an amico acid can be encoded by more than one codon.

6 0
3 years ago
HELP ASAP!! WILL GIVE 13 POINTS TO THE FIRST PERSON WHO ANSWERS THIS! AND WILL MARK AS BRAINIEST
4vir4ik [10]

Answer:

1.   As the cell size increases, the ratio of surface area to volume DECREASES

2.   It depends on the unit of the ratio 6:1. If it is in cm−1, then it means that it is similar to a cell of size 1 cm^3,  which is normally too big to get materials from the surface .

3.  A Small cell has a large surface area/volume ratio and therefore can exchange molecules with it's external environment rapidly. So, Here cell with ratio 6:1 is smaller and have ability to better transportation across it's membrane as compared to other cell with ratio 3:1

 HOPE THIS HELPS!!!

3 0
3 years ago
1.A scientist wants to prevent a culture of live cells from producing a particular protein. Which of the following will the scie
SIZIF [17.4K]

1. Answer:   A

Explanation: For a cell to form proteins, the specific types of proteins are coded for by the genes in DNA (found in the chromosomes of the nucleus). To produce proteins, the genes are first transcribed by RNA polymerase to form messenger-RNA. The mRNA is then translated into proteins by ribosomes in the cytoplasm of the cell.

2. Answer: B

Explanation: Translation of genes into proteins is dependent on the sequence of nucleotides. They are translated in sequences of 3 nucleotides known  as codons. Therefore adding a nucleotide on a piece of DNA causes what is referred to as a frame-shift mutation. The 3 sequences (of codons) is interrupted and shifted by one nucleotide. Therefore, the codons change and the amino acids translated will also change.

3. Answer: A

Expanation: Producers are significant in a food chain because they incorporate the energy of the sun into the food chain. This is why they are at the base of the food chain and have the largest biomass. They are consumed by primary consumers which are consumed by secondary consumers which are consumed by tertiary consumers and so on.  

4. Answer: D

Explanation: Plants are consumed by herbivores. Therefore, a decrease in plant population due to drought was resulted to decrease in herbivore population. This is due to stiff competition by the herbivores for the scarce plant population. Carnivores consume herbivores. Due to a decrease in the herbivore population, then the carnivore population would also decrease.

5. Answer: A

Explanation: Burning of fossil fuels emits carbon dioxide gas which is a greenhouse gas. Greenhouse gas traps infrared wavelength of lights hence warming up the atmosphere, causing global warming. Reduction  in use of fossil fuels will hence alleviate an increase in global temperature hence protect coral in the oceans from bleaching.  

4 0
3 years ago
"as an adult, your brain has fewer synapses than it had when you were 2 years old"
Liula [17]
That is incorrect your brain has same amount of synapses
5 0
3 years ago
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