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3 years ago

Which of the following mutations could lead to constitutive expression of the genes of the lac operon?

Biology

1 answer:

alina1380 [7]3 years ago

8 0

the answer is A.

~hope this helped

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Living things are composed only of organic elements, whereas nonliving things are made up of inorganic elementsa. Trueb. False

Scilla [17]

Answer: option B) Statement is false

Explanation:

Living things are NOT composed only of organic elements. Organic elements refers to compounds of Carbon, whereas living things such as Vertebrates (man, shark, lion etc) possess bones, teeth with INORGANIC components like phosphorus, magnesium, calcium.

Also, nonliving things are NOT made up of only inorganic elements. A good example is the air we breathe, it is non-living, yet contains carbon in the form of Carbiondioxide.

7 0

3 years ago

HELP PLEASE!!! I NEED HELP!!!

jek_recluse [69]

The answer is C hope this helps

5 0

3 years ago

Turtles and leopards all have four limbs and an amnion. True The common ancestor of lamprey and lancelets had a vertebral column

kramer

Answer:

Explanation:

The objective is to conclude if the statements are true or false based on facts.

1) $\text{ Turtles and leopards all have four limbs and an amnion. }$ True

2) $\text{The common ancestor of lamprey and lancelets had a vertebral column. }$ False

This is because their ancestor is a Chordate who doesn't have a vertebral column but a notochord.

3) True

$\text{Frogs are the sister taxa of turtles and leopards because they are more }$

$\text{related to a common ancestor.}$

4) $\text{Leopards and bass are more closely related than turtles and bass}$ False

This is because the bass is a fish that possess some characteristics traits related to an amphibian (turtle) as compared to a mammal(leopard).

5) $\text{The taxon that shares the most recent common ancestor with frogs is the bass.}$ False

The taxa of turtles share a more common ancestor with frogs compared to bass.

6) $\text{Leopards and lancelets have no common ancestor. }$ False

The common distant ancestor for leopards and lancelets is known as Chordates

4 0

2 years ago

VLD [36.1K]

Answer:

To make ATP

Explanation:

It is the main because it occurs in both aerobic ( presence of oxygen ) and anaerobic respiration ( absence of oxygen ).

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2 years ago

Read 2 more answers

Cell biologist, Dr. Martine Dinen, is observing an organism's cell using a transmitting electron microscope. She notices that wi

notsponge [240]

Answer:

eukaryotic auto i think

7 0

2 years ago