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RSB [31]
3 years ago
14

The sides of the DNA molecule, the rails of the ladder, are composed of what

Biology
1 answer:
Lynna [10]3 years ago
6 0

Answer:

Phosphates and Sugars.

Explanation:

The strands are nucleotides and are connected by a pattern of phosphates and sugars.

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A rabbit population's birth rate is 200 rabbits born/year. The death rate is 150 rabbits dying/year.
Tpy6a [65]

Answer:

It's growing

Explanation:

The growth rate is 50 rabbits per year

8 0
3 years ago
Why does blood pressure in both arms differ
Alika [10]

Explanation:

Generally, a small difference in blood pressure readings between arms isn't a health concern. However, a difference of more than 10 millimeters of mercury (mm Hg) for either your top number (systolic pressure) or bottom number (diastolic) may be a sign of blocked arteries in the arms, diabetes or other health problem

.A significant difference in the pressure recorded in the right and left arms can signal circulatory problems that may lead to stroke, peripheral artery disease, or other cardiovascular problems.

7 0
3 years ago
Robbie is trying to learn as much as he can about a rock that he found. This particular rock contains some fossils. What can Rob
Marrrta [24]
D. fossils will help you discover how old the rock is, fossils would not be included in the question if the answer does not relate to them
4 0
3 years ago
New generations are better suited to their environment than the first generation. What is this called?
olchik [2.2K]

Answer:

Descent with modification

Explanation:

We define evolution as descent with modification from a common ancestor.

Evolution only occurs when there is a change in gene frequency within a population over time. These genetic differences are hereditary and can be passed on to the next generation - which is what really matters in evolution: long-term change. In this process, the new generations are better suited to their environment than the first generation because of descent with genetic modification.

7 0
3 years ago
Which of the following are among the most common second messengers?
frosja888 [35]

Answer:

The correct answer would be calcium ion and cAMP.

Secondary messengers refers to the intracellular signaling molecules which pass the signals from the receptors located on the surface of the cell to the target molecule present within the cell.

The secondary messengers can be classified into three major class:

  1. Cyclic nucleotide for example cAMP (cyclic adenosine monophosphate), cGMP (cyclic guanosine monophosphate)
  2. DAG (diacylglycerol) and IP₃ (inositol triphosphate)
  3. Calcium ions (Ca⁺⁺)  

Hence, from the given options, calcium ion and cAMP would make the correct choice.

3 0
3 years ago
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