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2 years ago

Which characteristic is common to both segmented worms and roundworms?

1 answer:

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I believe the answer would be C. Because all worms normally have round bodies, and yes, they can be slender. They also don't really have nostrils, they can breathe through their skin even though they don't have lungs. So C. would be the best answer.

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1. In cell membranes with aquaporins can water move across the membrane?

zhannawk [14.2K]

Answer:

1.B. Yes, water is able to pass across the membrane through the aquaporins

2.A. Neither NaCl nor water can move across the cell membranes.

7 0

2 years ago

Describe how temperatures above 35 C most likely affect the structure and function of the starch synthase in the particular stra

arlik [135]

Answer:

- It is very likely that temperatures above 35°C will change the structural configuration of the enzyme, denaturing it and preventing it from performing its function.

- According to the information, the most probable consequences for this rice crop is that its starch content will be lower, compared to crops grown at optimal temperatures.

Explanation:

<u>The full question includes this statement</u>:

<em>A rice grain is a fruit that encloses a seed. Most of the dry mass of a rice grain is starch. In rice plants, starch is produced by hydrolyzing sucrose and then linking the released glucose molecules together into starch . The optimal temperature range for starch synthase activity in a particular strain of rice is 27°C - 30°C. The optimal temperature range for sucrose synthase in the strain is 30°C - 35°C.</em>

One of the factors affecting enzyme activity is temperature, according to which an enzyme can make a reaction faster, slower or inhibit the activity of that enzyme.

For a grain of rice to acquire its starch content, the activity of two enzymes is required, sucrose synthase - to obtain glucose from sucrose - and starch synthase, to polymerize glucose into starch (see image).

<h3>In this case, how temperatures above 35°C most likely affect the structure and function of the starch synthase?</h3>

The temperature of 35°C is far above the optimum temperature required for the enzyme to act, so it is possible that a change in the structure of the enzyme will occur or that it will be denatured, preventing the starch synthase from performing its function. One consequence of this is a lower starch synthesis.

<h3>When the average temperature in the growing season is 33°C, what can be predicted about the consequences on the starch content in mature rice grains?</h3>

A temperature of 33°C is outside the range of starch synthase activity -even though it is optimal for sucrose synthase- which would decrease starch synthesis and, because of this, the rice grains in this crop would have less starch content.

Learn more:

Relationship between the reaction of velocity of an enzyme and temperature brainly.com/question/14198802

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1 year ago

What may a salesperson say when you enter a store?

muminat

Answer : Option D) en que puedo servirle

Explanation : Anytime if someone enters into a store the sales person always asks for the requirement of the customer's demand in spanish it will be en que puedo servirle. It is a good gesture for gaining more customer satisfaction of a particular store.

7 0

2 years ago

Read 2 more answers

Appositional growth occurs within the ____________ . In this process, ____________ in the inner cellular layer of the periosteum

BaLLatris [955]

Answer:

Appositional growth occurs within the periosteum . In this process, osteoblasts in the inner cellular layer of the periosteum produce and deposit bone matrix within layers parallel to the surface, called external circumferential lamellae. These lamellae are analogous to tree rings: As they increase in number, the structure increases in diameter. Thus, the bone becomes wider as new bone is laid down at its periphery. As this new bone is being laid down, osteoclasts along the medullary cavity resorb bone matrix, creating an expanding space.

Explanation:

The blanks shown in the question above were filled with the correct term for each situation, thus creating a message with veracity and with the right concepts, creating an efficient, explanatory and direct message, showing exactly what happens in the situations shown in the question. In addition, the blanks were filled with the correct grammar and the necessary punctuation to make the text cohesive.

7 0

1 year ago

A stream of water holds thriving bacteria. If drought conditions caused the stream to dry up, how would the bacteria mostly like

Alexeev081 [22]

The answer is they produce endospores.

Explanation:

The endospores are dormant, non-reproductive, tough bacterial spores that ensure the survival of bacteria in adverse conditions.

During the environmental stress, such as starvation, desiccation, radiation and chemical treatment many bacteria form dormant endospores. These endospores germinate again when the conditions become favorable.

Hence, if drought conditions lead the stream to dry up, the bacteria that live there would produce endospores to survive.

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1 year ago