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Rama09 [41]
2 years ago
5

In Cohen and Boyer's pioneering studies of recombinant DNA, how did they know they had produced recombinant DNA

Biology
1 answer:
irga5000 [103]2 years ago
5 0
They had bacteria that were resistant to both antibiotics
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Which leads scientists to believe that Earths inner core is solid
ELEN [110]
Waves traveling through the inner core<span> go faster than those throughthe </span>outer core<span>.</span>
5 0
3 years ago
Read 2 more answers
Which of the following correctly pairs biotic factors with an effect on the biosphere?
uysha [10]

The statement that correctly pairs biotic factors with an effect on the biosphere is that biotic factors would decrease the oxygen in the soil.

<h3>What are biotic factors?</h3>

Biotic factors of an ecosystem refers to the living components of that ecosystem. Biotic factors include the following:

  • Plants
  • Microbes
  • Animals

Biotic factors make use of oxygen in the atmosphere to perform the process of respiration, hence, their presence will cause a decrease in the oxygen content.

Therefore, the statement that correctly pairs biotic factors with an effect on the biosphere is that biotic factors would decrease the oxygen in the soil.

Learn more about biotic factors at: brainly.com/question/11274302

5 0
2 years ago
A cell pump hormones out into the bloodstream; a process that requires energy. If 4 ATP were converted to ADP, how much energy w
vagabundo [1.1K]

Answer:

The question lacks options, the options are;

A) 4 KJ

B) 122 KJ

C) 30.5 KJ

D) 1600 KJ

The answer is B, 122KJ

Explanation:

Adenosine triphosphate (ATP) is the energy currency of all living cells. It is the usable form of energy by cells for their life functions. Energy in ATP is harnessed via the hydrolysis of one of its phosphate molecules to form Adenosine diphosphate (ADP). The energy (measured in Kilojoules) needed by cells is released in this process.

In this case, a cell uses energy to pump hormones into the bloodstream. According to the question, 4 ATP's were used i.e. 4 ATP were converted to ADP. The hydrolysis of one ATP molecule releases 30.5 KJ/mol of energy needed for cellular work.

Hence, if 4 ATP were utilized by this particular cell, 4 × 30.5 KJ = 122 KJ of energy will be used by the cell to pump hormones.

8 0
3 years ago
Negative feedback
zhuklara [117]

Answer:

b. Works within an upper and lower range

c. " Is regulatory. "

d. Is very common in biological systems

Explanation:

Negative feedback is the regulatory mechanism that maintains homeostasis by counteracting the deviation. Any change serves as a stimulus and a response is produced to reverse the change. Negative feedback is a very common regulatory mechanism to maintain internal body conditions within a narrow range.

For example, the body temperature in adults is maintained within the narrow range of around 36 -37 degrees Celsius. An increase or decrease in the body temperature from the set point is counteracted to restore the set point. An increase in body temperature is reversed by the vasodilation of blood capillaries of skin layers to lose the heat to the surroundings. On the other hand, reduced body temperature below the set point is restored by constriction of capillaries of skin layers.

7 0
3 years ago
3.1<br>Suggest which leaf carries out more photosynthesis and explain why.<br>​
Olin [163]

Explanation:

Leaf that are really green, because they contain Lots of chlorophyll in the chloroplast which is the main site for photosynthesis

7 0
3 years ago
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