Answer:
a. The production of enzymes that allow for the fermentation of the sugar lactose when it becomes available in the culture medium
Explanation:
When an operon that is normally not expressed and remains inactive since a repressor molecule is attached to its operator, it is said to be an inducible operon. The transcription of the operon is activated when an inducer binds to the repressor. This binding does not allow the repressor protein to bind to the operator. The operon is transcribed by RNA polymerase.
When lactose is present in the medium, the lac operon is expressed. Some of the lactose is converted into allolactose. Allolactose binds to the repressor and makes it unable to bind to the operator. This makes it an inducible operon.
Answer:
the right sequence is
molecule, cell, tissue, organ, organ system, organism
Explanation:
small molecules joined to form cells. cells joined together and bunches together to form a tissue. different types of tissue combined to form organ and these organs constitute an organ system. Organ systems which are responsible for performing specific function in body join to form a complete .organism.
Hi there!
Great question!
There are different organisms on Earth and they all get energy differently.
For example, a plant gets its energy from the sun. The sun shines down on it, giving the plant energy to grow.
On the other hand, a wolf would get its energy from the food it eats. When the wolfs belly is full, it has more energy to run around and catch more of it!
Hope this helps! :D
Answer:
The correct answer is - observing on any dark, clear night.
Explanation:
We and many other plants and our sun present in a galaxy, called the Milky Way as it appears as a milky band of light in the sky when you see it in a really dark clear area night.
It can be observed easily without the help of a telescope all it requires a dark but clear night without clouds. It looks like a hazy band or cloudy white or milky color band in the sky.
Answer: 2).it will result in an incomplete protein that does not function properly
Explanation: A codon is a triplet of nucleotide in an mRNA that codes for a particular amino acid. Some amino acids are specified by more than one codon. UAC and UAA are examples of codons found in an mRNA. UAC specifies amino acid tyrosine while UAA does not specify any amino acid and signals the end of translation, it is therefore called a stop codon. When a stop codon is encountered during translation, protein synthesis will be inhibited and this will result in a nonfunctional protein with incomplete amino acid sequence.
