Can someone please help me on this this is I have to finish up this question to be done

How do bacteria maintain their internal ph despite the ph of the environment in which they grow?

ipn [44]

The answer to this question would be: by producing buffer

The pH of optimal growth of bacteria might be different. Some bacteria can grow in an acid condition called acidophile, other live in base condition called alkaliphiles and the rest live in neutral pH condition called neutrophiles. The bacteria can maintain their internal pH by producing acid, base or buffer. If the surrounding pH is too acid, the bacteria can reduce the H+ concentration by producing base. If the condition is too alkali/base, the bacteria can produce acid by doing fermentation.

7 0

3 years ago

Consider the factors that affect muscular strength. Read each scenario and identify whether each would result in a stronger or w

nlexa [21]

Muscles are required in breathing, talking, running, walking, and any body movement. Actin and myosins are protein filaments present in muscle cells that help to contract and relax or change the shape of muscles. Muscles are responsible for the movement or motion of organisms. Joints are the connection between two or more bones. Most joints are mobile.

Muscle strength is determined by several factors. Some of those are the physical shape, size, and innervation of the muscles.

Weak contraction

Potassium accumulates in the sarcoplasm.
Contracted lower sarcoplasm pH.
Begin contraction with muscle already 50%.
The circular arrangement of muscle fascicles.

Stronger contraction

Increase in muscle belly circumference.
A lesser proportion of motor neurons to muscle fibers.
Increased recruitment.
Increased stimulus frequency.

7 0

2 years ago

Pyruvate dehydrogenase is regulated by feedback inhibition and covalent modification. Which molecules inhibit the pyruvate dehyd

Oksi-84 [34.3K]

ADP, NAD+, CoA-SH, and pyruvate are the molecules that inhibit the pyruvate dehydrogenase complex.

<h3>What is pyruvate dehydrogenase complex?</h3>

PDC3 triggers the oxidative decarboxylation of pyruvate, resulting in the creation of acetyl-CoA, CO2, and NADH.

The PDC plays a crucial role in the oxidation of glucose by connecting the glycolytic pathway to the tricarboxylic acid cycle's oxidative pathway.

ADP, NAD+, CoA-SH, and pyruvate all inhibit it. PDK prevents glycolysis from being coupled to GO by inhibiting its target enzyme PDH.

Thus, the answer is ADP, NAD+, CoA-SH, and pyruvate .

For more details regarding pyruvate dehydrogenase, visit:

brainly.com/question/16346028

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3 0

1 year ago

What type of intercellular junction bands together adjacent cells, making the epidermis stronger?.

fenix001 [56]

Answer:

Tight or occluding junctions This type of junction is also called zonula occludens and is the most apical structure in the epithelial cell. Zonula occludens describes, that there is a formed band of tight junctions which encircles every cell.

Explanation:

8 0

1 year ago

Which of the following is an example of erosion?

zimovet [89]

Answer:

A

Explanation:

I think A is the example of erosion

3 0

2 years ago