Answer:
cells have different shapes because they do different things
Explanation:
each cell type has has its own role to play in helping our bodies
to work properly
B. oil in water
C. sand in water
D. all of these
Answer:
I don't know exactly what you need but I give you an example so that you can create your samples through the Excel program, I hope it helps.
Just enter your sampling frame (the clients of which you have contact information) in the spreadsheet. Once you have a sampling frame (possible respondents) in Excel, you can easily select a random sample among them. For example, in your case that it is a work of biology and neceists three random samples here you can apply it with the following rules:
-Add a new column in the spreadsheet and name it "Random Number".
-In the first cell below your header row, type "= RAND ()".
-Press “Enter” and a random number will appear in the cell.
-Copy and paste the first cell in the other cells of the column.
-Once each row has a random number, organize the records from the "Random number" column.
-Then, select the first samples. In this way you will randomly choose from all samples.
Answer:
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Explanation:
Answer:
RNA was the genetic material
Explanation:
If avary, Macleod, and McCarty would have seen that only RNAse treatment of the heat-killed bacteria prevented the transformation of genetic virulence than might have concluded that RNA is the genetic material as transformation does not occur because the RNAase degraded the RNA.
But if the genetic material is DNA then RNAase will not work because RNAase can not degrade DNA and then DNA will pass from virulent heat killed strain to nonvirulent strain and will cause transformation.
B) pons.
C) midbrain.
D) diencephalons.
E) cerebellum.
Answer:
Medulla oblongata. (Ans. A)
Explanation:
Medulla oblongata is present in the brain, in front of the cerebellum. It controls the number of functions in the body. It helps to transfer messages to the thalamus & spinal cord, from the body.
Medulla oblongata helps to regulate breathing, blood pressure, heart rate, sneezing, and digestive activities. Medulla oblongata part of the brain is a center for respiration & circulation. Sensory & nerve cells from the midbrain & forebrain travel through the medulla. It receives its blood supply from many arteries (including anterior spinal, posterior inferior cerebellar and the vertebral artery's)
The medulla oblongata in the brain controls crucial autonomic functions like breathing, blood pressure, heart rate, and digestion.
The major centers concerned with autonomic control of breathing, blood pressure, heart rate, and digestive activities are located in the medulla oblongata (option A). The medulla oblongata is an important part of our brainstem, located just above the spinal cord. It is crucial as it controls various autonomic functions such as breathing, heart rate, blood pressure, and digestion.
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