Answer:
C. This statement is true because every step in protein synthesis requires enzymes, which are nothing but proteins.
Explanation:
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Answer:
Independent variable: Glass of milk
Dependent variable: Time of sleep
Control variable: same type of milk
Explanation:
Independent variable in an experiment refers to the variable that the experimenter manipulates or changes in order to get a response in another variable (dependent). In this case, the independent variable is the GLASS OF MILK taken before bed.
Dependent variable is that variable that is measured in an experiment. It is the variable that responds to the changes made to the independent variable. In this experiment, the dependent variable is the TIME OF SLEEP of the students.
A control variable or constant is the variable that is kept unchanged throughout the course of the experiment in order not to alter the outcome of the experiment. In this experiment, a control variable can be the SAME TYPE OF MILK taken by each student.
In this milk-drinking sleep experiment, the independent variable is drinking milk at bedtime, the dependent variable's sleep length, and control variables could include other dietary factors, ambient room temperature, bedtime, etc.
In an experimental design, the independent, dependent, and control variables help us isolate cause and effect relationships. In this case, the independent variable would be drinking a glass of milk before bed. This is the variable manipulated or changed in the experiment. The dependent variable is the length of sleep, as it's believed to be influenced by the milk-drinking behavior. Finally, there are multiple potential control variables - factors kept constant to ensure any changes in sleep length are due to the milk intake and not other variables. Such control variables could include the type and volumes of all other consumables, ambient room temperature, time of going to bed, physical activity levels during the day, etc.
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B) active transport using ATP and carrier proteins
C) passive transport by osmosis through the proteins
D) active transport using a process called phagocytosis
The correct option is passive transport by diffusion through proteins.
A type of cellular transport known as passive transport involves the movement of molecules and ions along concentration gradients. It indicates that a drug has a propensity to migrate from a region of higher concentration to a region of lower concentration.
Contrary to active transport, another type of cellular transport, which fundamentally requires ATP to move substances against their concentration gradient, the process does not require metabolic energy (e.g. ATP) because the chemicals are moved downhill or along their concentration gradient.
The four main methods of passive transport are osmosis, filtration, simple diffusion, and assisted diffusion.
Therefore, The correct option is passive transport by diffusion through proteins.
To learn more about active transport, refer to the link:
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Answer:
The fossils are able to give scientists clues about the type of organism that lived in an ancient environment.
Explanation:
Fossils are able to give scientists clues about the type of organism that lived in an ancient environment. That's because fossils are records of living things that were alive hundreds and millions of years ago.
When we talk about fossils we immediately think of bones, but the fossils can be taken, feces, leaves, roots, hair, among other factors of a living organism, which was trapped in rocks for many years, kept conserved and can be studied and evaluated.