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AveGali [126]
2 years ago
7

2. In order to grow, animals with an exoskeleton must

Biology
1 answer:
Rzqust [24]2 years ago
3 0

a.shed their skin..

Explanation:

Exoskeleton

A true exoskeleton, like that found in arthropods, must be shed (moulted) when it is outgrown. ... The new exoskeleton is still capable of growing to some degree, however. Animals of the order arthropoda, like lizards, amphibians, and many other animals that shed their skin, are indeterminate growers

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Which of the following seems probable in a garden with moist soil, planted with thriving astilbe, bleeding
Vadim26 [7]

Answer:

the garden has a low ph, under 7

Explanation:

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2 years ago
Which is not a factor that weather depends upon? Hours of daylight Air Temperature Air pressure Moisture
Len [333]

Answer:

Option A , Hours of daylight  does not affect the weather

Explanation:

The seven prime factors that affect the weather are

Temperature

Pressure

Moisture content

Speed and direction of air

Latitude

Ocean currents

Elevation and bodies of water.

Hence, option A , Hours of daylight  does not affect the weather

3 0
2 years ago
The leaves of a desert plants often have two or more layers of palisade mesophyll, rather than the single layer that is a charac
Degger [83]

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4 0
3 years ago
An enzyme contains a catalytic histidine residue in its active site that must release an R group proton to solution in order to
hjlf

Options missing:

a) The pH of the environment should be relatively high.

b) The pH of the environment should be relatively low.

c) The pH of the environment would not matter.

d) The environment should be set to the biochemical standard state.

Answer:

a) The pH of the environment should be relatively high.

Explanation:

For optimal function an enzyme needs a certain environment or condition. As temperature increases, the rate of enzyme activity also increases. As temperature increases toward its optimum point of 37 degrees Celsius (98.6 F), hydrogen bonds relax and make it easier for the hydrogen peroxide molecules to bind to the catalase.

The part of the enzyme where this reaction takes place is called the active site. A temperature that is higher or lower than this optimum point changes the shape of the active site and stops the enzyme from working. This process is called denaturation.

Enzyme pH levels also change the shape of the active site and affect the rate of enzyme activity. Each enzyme has its own optimal range of pH in which it works most effectively. In humans, catalase works only between pH 7 and pH 11. If the pH level is lower than 7 or higher than 11, the enzyme becomes denaturated and loses its structure. The liver sustains a neutral pH of about 7, which creates the best environment for catalase and other enzymes.

General acid catalysis would require histidine to be protonated at pH values (pH 8.0) optimal for enzymatic activity which is relatively high.

3 0
3 years ago
A histologist examines a tissue slide and observes many fibers tightly packed together in a parallel arrangement. a few cells ca
neonofarm [45]

<u>Answer</u>: Dense regular (fibrous) connective tissue.

<u>Explanation</u>:

  • <em>Connective tissue</em> is a tissue that performs various functions such as binding, connecting and supporting the other organs or tissues or separating one tissue from another.
  • <em>Dense regular connective tissue</em> connects various tissues present in the body.
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8 0
2 years ago
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