What happens in an aphotic zone of a body of water

1 answer:

7 0

Aphotic zone of a body of water refers to the part where almost no sunlight. With this condition of water, marine life is limited to species who does not light for survival. The aphotic area also is the basin of the dead organism that submerges from the photic part. Temperatures at these areas are also low.

You might be interested in

Gonadotropin releasing hormone, is a secreted protein hormone that is released from the hypothalamus to signal the release of th

S_A_V [24]

Answer:

i need help too

Explanation:

5 0

3 years ago

If an enzyme's active site contains only two ionizable residues, an arginine and a glutamate (pKa's of 2.9 and 9.1, respectively

Cerrena [4.2K]

Answer:

Optimum pH= 6

Optimum pH for the given enzyme would be the average of pKa values of two amino acids (2.9 + 9.1 /2= 6)

Explanation:

The pKa represents the association constant of amino acids. It is calculated by taking the negative log value of the ratio of a dissociated acid and the conjugated base which in turn regulates the isoelectric point (pI) of the protein.

The amino acids present in the active site of the enzyme regulate the interaction of enzyme and substrate. The given enzyme contains two ionizable amino acids with pKa values of 2.9 and 9.1 respectively. Therefore, the optimum pH of the given enzyme would be 2.9 + 9.1 / 2 = 12/2 = 6.

At pH 6, both the ionizable amino acids would serve as a good buffer with their active proton donor and proton acceptor species.

4 0

3 years ago

Amphiarthrodial joints display ___ movement than synarthrodial joints.

Misha Larkins [42]

The answer to this question would be more movement.

The amphiarthrodial joint is a joint that you will found in the rib cage. This joint doesn't have a synovial cavity and only allow a little movement.
But synarthrodial joints movement is practically zero. The example for synarthrodial joint would be suture in your skull. Skull joint in adult can't move so its volume can't be changed.

7 0

4 years ago

Four different blood types are found in human populations because of _______________ and _______________.

larisa [96]

Answer:

of your body's natural defences  and presence or absence of certain antigens 

Explanation:

mark me as brainliest if it helped you

5 0

3 years ago

An________ reveals the electrical activity of the brain by producing a record of brain waves. a _________ reveals activity in va

statuscvo [17]

An electroencephalogram (EEG) reveals the electrical activity of the brain by producing a record of brain waves. It is noninvasive and uses electrodes which are placed along the scalp. It records the electrical signals of the brain. This can help diagnose sleep disorders and epilepsy

A PET Scan, which is short for positron-emission tomography, reveals activity in various pars of the brain based on patterns of blood flow, oxygen use, and glucose consumption. It is an imaging test that makes use of radioactive materials or substances called tracers. It helps to see how the brain functions and it can be used as a diagnostic test for disease or injury in the brain.

5 0

4 years ago