14. Surface area is an important factor in limiting growth cell because
a. the cell may become too large to remove enough wastes.
b. materials can't enter the cell if it's too large
c. the cell can burst if the membrane becomes too large
d. waste products can't leave the cell if it's too small
I'm stuck between A and D
2. In a cell undergoing meiosis, which sequence of events is shown in correct order?
a. the cytoplasm divides, chromosomes line up at the equator, nuclear envelope forms.
b. chromosomes become visible, chromosomes line up at the equator, chromosomes gather at the poles of the cell
c. homologous chromosomes moves to equator, chromatids move to opposite poles of the cell, spindle forms around chromosomes.
d. both B and C
D?
3. Which of the following explains Gregor Mendel's contribution to the study of genetics?
a. He determined 4 hypothesis that form the basis of the theory of heredity
b. he confirmed the current theory that offspring were blend of the traits of their parents.
c. he was able to determine that patterns of heredity could not be predicted
d. he invented the Punnet square to predict the pattern of heredity
D
Thanks
-MC
1 A 3 A 2. My brain is suffering from allergies, check your text.
Thanks! (:
-MC
Great job on narrowing down your options for each question! Let's go through each question and explain how to arrive at the correct answer:
1. Surface area is an important factor in limiting cell growth because:
To answer this question, you need to understand the concept of surface area-to-volume ratio in cells. As a cell grows, its volume increases faster than its surface area. Option A refers to the fact that if a cell becomes too large, its surface area may not be sufficient to remove enough waste products through the cell membrane. On the other hand, option D suggests that waste products can't leave the cell if it's too small, which contradicts the concept we are discussing. Therefore, the correct answer is A.
2. Sequence of events in meiosis:
Meiosis is a cell division process that involves two rounds of division, resulting in the formation of four non-identical daughter cells. To answer this question, you need to be familiar with the stages and events of meiosis. Option B mentions that chromosomes become visible, line up at the equator, and gather at the poles of the cell. Option C describes the movement of homologous chromosomes to the equator, chromatids to opposite poles, and the formation of a spindle. Both option B and C are incorrect in terms of the correct order of events. Therefore, the answer is none of the given options.
3. Gregor Mendel's contribution to genetics:
To answer this question, you need to know about Gregor Mendel's experiments with pea plants and his discoveries. Option A states that Mendel determined four hypotheses forming the basis of the theory of heredity; this is correct since Mendel's laws of inheritance are a critical foundation in genetics. Option B suggests that Mendel confirmed the current theory of blending inheritance, but this is incorrect. Option C claims that Mendel determined that patterns of heredity could not be predicted, which is also incorrect. Option D mentions the invention of the Punnet square; although Mendel did perform intricate calculations to analyze the inheritance patterns, he did not invent the Punnet square. Thus, the correct answer is A.
Well done on choosing the correct answers for each question! If you have any more questions, feel free to ask.