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Questions in biology

[Terjawab] Discuss the nature and functions of proteins.

[Terjawab] High population density can cause increases in competition for resources, such as food and shelter. The table shows the number of zebras living in four different regions. | | Population of Zebras | Area ($km^2$) | | -------- | -------------------- | ------------- | | Region A | 1,312 | 212 | | Region B | 630 | 314 | | Region C | 16,400 | 625 | | Region D | 17,800 | 902 | In which region is competition for resources likely the greatest? A. Region A B. Region B C. Region C D. Region D

[Terjawab] Which of the following factors most influences the rate of molecular movement into a cell? A. Surface area of the cell B. Direction of movement of the molecules C. Kinetic energy of the molecules D. Volume of the cell

[Terjawab] What is a dendrite? A. Where electrical impulses from the neuron travel away to be received by other neurons B. The receiving part of the neuron. They receive synaptic inputs from axons. C. They are information messengers. They use electrical impulses and chemical signals to transmit information between different areas of the brain.

[Terjawab] Catene finches can be found in many areas of the world, including North America and Asia. Hawaiian honeycreepers, which are found only in Hawaii, have been found to have DNA commonalities with this group of finches but indicate they have a common ancestor. Which mechanism might have led to the appearance of the Hawaiian honeycreeper? A. anatomical isolation B. temporal isolation C. geographical isolation D. behavioral isolation

[Terjawab] Bones provide both structure and protection for the body.

[Terjawab] The size of a cell is limited by the a) lack of building materials b) size of the organism c) relationship between the volume of the cell and its surface area d) job it does e) materials it has to exchange

[Terjawab] Practice the steps of the scientific method below by completing each box. Observations & Questions You observe that some of the zinnia flowers in your yard have larger blooms than others. You also observe that the amount of sunlight each day varies around the yard. Write a question that relates to the size of the zinnia flowers and the amount of sunlight they receive each day.

[Terjawab] Refer to Table 8.2. If a frameshift mutation occurred in the sequence of bases shown below, what would be the sequence of amino acids coded? ``` 3'ATTACGCTITGC ``` Codon on mRNA and corresponding amino acid | UUA | leucine | UAA | nonsense | | :------- | :------- | :-- | :------- | | GCA | alanine | AAU | sparagine| | AAG | lysine | UGC | cysteine | | GUU | valine | UCG, UCU | serine | A. asparagine-arginine-lysine-alanine B. asparagine-cysteine-valine-serine C. leucine-arginine-lysine-alanine D. Translation would stop at the first codon. E. The answer cannot be determined based on the information provided.

[Terjawab] Hemophilia is a disease that causes uncontrollable bleeding. If a father has it, all of his daughters will be carriers of the disease. Which macromolecule is involved in how hemophilia is passed from parents to their children? A. carbohydrate B. lipid C. nucleic acid D. protein