All categories

3 years ago

Study the cladogram. Which two organisms would be the least related?

Biology

2 answers:

Vesna [10]3 years ago

6 0

I think its this one. archea

Allisa [31]3 years ago

6 0

Answer:

C. chimpanzee and salmon

Explanation:

You might be interested in

The advantage of excreting nitrogenous wastes as urea instead of ammonia is that:________ a) urea requires more water for excret

ICE Princess25 [194]

Answer: B

Explanation:

Ammonia is so toxic that it can be transported and excreted only in large volumes of very dilute solution. As a result most terrestrial animals simply don't have access to sufficient water to routine excrete ammonia.

The main advantage of urea is its very low toxicity. Animals can transport urea in the circulatory system and store it safely in high concentrations. Also much less water is loss when a given quantity of nitrogen is excreted in a concentrated solution of urea than would be in a dilute solution of ammonia.

4 0

3 years ago

What's the difference between skin infections and rashes?

Black_prince [1.1K]

Answer:

rashes is caused by heat while skin infection is caused by bacteria and infection

3 0

3 years ago

Read 2 more answers

Plants maintain homeostasis by ____. 1) opening and closing stomata. 2) converting excess sugar molecules to a lesser number of

Nuetrik [128]

D)all of the above

Homeostasis is the property of a system, either open or closed, that regulates its internal environment and tends to maintain a stable, constant condition within an organism. (Eg controlling amount of sugar in the bloodstream, keeping waste levels at acceptable levels.) 

Opening and closing stomata controls the gas levels within the plant. 
Converting excess sugar molecules to a lesser number of starch molecules regulates sugar levels. 
Excreting waste through the cell membrane prevents waste build-up.

5 0

3 years ago

Read 2 more answers

1. Suppose the synthesis of an amino acid was accomplished by four enzymes encoded by four genes that formed an operon. Draw a m

vivado [14]

I have attached lac operon model having 4 genes. See attachment for better understanding.

Answer:

The Lac operon is controlled by two signals.

Initiation

Glucose and lactose concentrations control the initiation of transcription of the Lac operon through their effects on the Lac repressor protein and Cap.

Lactose absent (Repression)

When lactose is absent, the Lac repressor binds the Lac operator and shuts off expression of the operon.

Lactose present (Transcription)

Addition of lactose increases the intracellular concentration of a related compound, allolactose. allolactose binds to the Lac repressor, causing it to undergo a conformational change that releases its grip on the operator DNa.

Glucose absent (Repression)

When glucose is absent, cyclic aMp (red triangle) is produced by the cell and Cap binds to DNA.

Glucose present (Transcription)

LacZ, the first gene of the operon, encodes the enzyme b-galactosidase, which breaks down lactose to galactose and glucose.

7 0

3 years ago

The energy found in atp molecules synthesized in animal cells comes directly from

Dmitriy789 [7]

Organic molecules, which are found mostly in food. These molecules have C-C or C-H bonds, which are high energy bonds.

6 0

3 years ago