Name: ______________________________
Life Science Homework
7th Grade Science – Room 205
Date: ________________ Period: _______
Wednesday 1/6 complete this section for homework Wednesday
1. A small baby snake grows into a larger adult snake. Choose the explanation that best
describes why a small baby snake grows into a larger adult snake.
a. the baby snake’s cells divide
b. the baby snake’s cells grow into longer cells
c. the baby snake’s cells grow into much larger cells
d. the food the baby snake eats makes it grow big and strong
Explain why you chose your answer:
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2. Which of the following is not a result of the cell cycle?
a. reproduction
c. nutrition
b. growth
d. repair
3. Complete the levels of organization in multicellular organisms below
Cells
Organism
Thursday 1/7 complete this section for homework Thursday night
1. How do we define sexual reproduction in science? ___________________________
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2. How many chromosomes are in a human:
diploid cell? _____________________
haploid cell? _____________________
3. What are the advantages of sexual reproduction? ____________________________
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Monday 1/11 complete this section for homework Monday night
1. What is a major difference between sexual and asexual reproduction? (Think about
where the genetic material comes from) ______________________________________
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2. What are disadvantages to asexual reproduction?
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3. What are the advantages of asexual reproduction?
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Tuesday 1/12 complete this section for homework Tuesday night
1. If someone’s alleles for eye color are represented as: bb then they are…
a. heterozygous
c. homozygous dominant
b. heterozygous
d. homozygous recessive
2. Complete the Punnett Square Below:
What is the probability that the offspring will be
homozygous recessive (tt)?
a. 50%
b. 75%
c. 25%
3. A child has blue eyes, but both of the child’s parents have brown eyes. Create a
Punnett Square below that explains how this is possible. (remember that B represents
brown eye allele, b represents blue eye allele)
Write a sentence to explain the Punnett Square you created, how could the blue eyed
child be born to two brown eyed parents.
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4. ___________ is the passing of traits from parents to offspring.
Thursday 1/14 complete this section for homework Thursday night
1. What type of relationship do a dog and a flea have? Explain
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2. How does a commensal relationship affect the organisms involved?
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3. What type of a relationship do bees and flowers have? Explain.
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4. What is an abiotic factor? Give two examples.
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5. Scientists classify organisms by… _______________________________________
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6. Where does almost all energy on Earth come from? __________________________