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gregori [183]
3 years ago
13

Help me out pleaaaaaase i’m confused

Biology
1 answer:
Butoxors [25]3 years ago
4 0
I believe the answers 3
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Whales, humans, lizards, and birds each have forelimbs that are adapted for different functions, including swimming, using tools
Elis [28]

Answer:

A. These homologous structures indicate that these four organisms all share a common ancestor.

Explanation:

Homologous structures mean the organs will have similar structure, but not necessarily function (human arm vs whale's flipper). While analogous structures are similar in function but not structure (wings of an airplane vs wings of a bird). Since the question states that they are similar in skeletal structure, we know they must be homologous structures, thereby eliminating B and C. D is not a choice because the question does not provide anything about the order of evolution. Therefore the answer is A. These homologous structures indicate that these four organisms all share a common ancestor.

7 0
2 years ago
Hypothesis: What do you predict you will find about the number of cells in each of the phases of the cell cycle? Provide an expl
Wittaler [7]

For the Data and Observation refer the image attached.


Data Analysis:  

Calculate the percentage of the cell cycle spent in each stage.

Number of cells in given stage ÷ total number of cells counted × 100 = % of the cell cycle spent in this stage

Conclusion:

Be sure to answer the following reflection questions in the conclusion of your lab report:

Based on your data, what can you infer about the length of time spent in each stage of the cell cycle?

The most time is used in the cell cycle is in the interphase.

What stages were the longest and shortest? Give a brief explanation of why these stages may have that time period.  

The longest phase of the cell cycle is the Interphase. Most of the total time of cell cycle is spent in the Interphase.  The reason for this being is that the cell prepares itself for its division, and also in this phase, the necessary protein for the duplication of organelles occurs.

8 0
3 years ago
Read 2 more answers
Which is an example of acquisition of natural passive immunity?
inysia [295]
The transfer of antibodies from a mother to the fetus. This occurs naturally, and since it is the transfer of antibodies, it is passive immunity. 
8 0
3 years ago
¿cuales son las funciones de la saliva?
REY [17]

Answer:

La saliva se compone de agua en un 99%, pero cumple un papel clave no solo para mantener la salud de la cavidad oral, sino también para la correcta deglución y digestión de los alimentos. Conoce sus funciones.

6 0
3 years ago
The following image shows a cell before and during the process of mitosis. Before it undergoes mitosis, the cell contains 2n chr
svlad2 [7]

The correct answer is B: The cells will have 2n chromosomes and be diploid.

Diploid cell have two of each chromosome, one from each parent. When diploid cell undergoes mitosis, the result is two identical diploid cells (when haploid cell undergoes mitosis the result is haploid cell). This means that during the mitosis, cells reproduce genetically identical copies of themselves.


6 0
2 years ago
Read 2 more answers
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