Answer: <u><em>The DNA molecule consists of two strands that wind around one another to form a shape known as a double helix. Each strand has a backbone made of alternating sugar (deoxyribose) and phosphate groups</em></u>
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Explanation: <u><em>Each DNA strand is composed of nucleotides—units made up of a sugar (deoxyribose), a phosphate group, and a nitrogenous base. Each strand of DNA is a polynucleotide composed of units called nucleotides. A nucleotide has three components: a sugar molecule, a phosphate group, and a nitrogenous base.</em></u>
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<u><em>If i'm right Mark Me brain, give 5 stars and a thank you</em></u>
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Pollen cells are plant male gametes. On the other hand, algae cells autotrophic protists.
- Pollen cells and algae cells have DIFFERENT FUNCTION and DIFFERENT SHAPE.
- Algae are autotrophic microorganisms that synthesize their own food
- Algae belong to the Protista kingdom. These microorganisms can be unicellular or multicellular.
- Algae cells have many different forms.
- Pollen cells represent plant male gametes.
- During fertilization, pollen cells fuse with the egg cell to form a zygote.
- Pollen cells have many different forms (generally spherical).
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The ecological term that is used to describe the interaction of species in a same geographical area is population.
Answer:
C
Explanation:
The helix has to unwind before separating. Once it's separated, then new bases can be added. Once the bases are added, the separate strands wind into helices.
Answer:
An independent variable
Explanation:
An experiment consists of two variables viz: independent and dependent variable. Independent variable is the variable that the experimenter controls in order to influence or effect a change in the measurable variable called dependent variable. As the name suggests, the dependent variable is dependent on the independent variable.
For example, a scientist is trying to conduct an experiment on how the caffeine level in different types of drink affects the time of sleep in individuals. The independent variable in this experiment is the TYPE OF DRINKS because it is the variable controlled by the experimenter in order to influence the time of sleep (measurable outcome).
