please help me I suck at biology?

The only cell components and organelles in a sperm are a nucleus, mitochondria, and flagellum. What is the flagellum for?
A. contains a diploid set of chromosomes
B. energy production
C. contains a haploid set of chromosomes
D. structure for the physical propulsion of the sperm
E. reserve of energy and nutrients for the zygote

What is the term for two chromosomes that have the same length, shape and genes, but do NOT have exactly the same DNA sequence?
A. sister chromatids
B. centrioles
C. centromeres
D. haploid chromosomes
E. homologous chromosomes

The only cell components and organelles in a sperm are a nucleus, mitochondria, and flagellum. What is the nucleus for?
A. energy production
B. reserve of energy and nutrients for the zygote
C. structure for the physical propulsion of the sperm
D. contains a haploid set of chromosomes
E. contains a diploid set of chromosomes
 
For #1, the answer is D (Flagella) because flagella are the little tails on the end of a sperm.

For #2 the answer is E (Homologogous), because sister chromosomes would mean that they were related (Have same DNA) Centrioles are a completely different organelle unrelated to DNA and haploid chromosomes are Chromosomes with only half the amount of DNA of a diploid. And I don't even know what centromeres are.

For #3 the answer is D because the whole purpose of sperm is to transfer DNA (In chromosomes) to the female ones to create a diploid that can grow into an embryo.
 
For #1, the answer is D (Flagella) because flagella are the little tails on the end of a sperm.

For #2 the answer is E (Homologogous), because sister chromosomes would mean that they were related (Have same DNA) Centrioles are a completely different organelle unrelated to DNA and haploid chromosomes are Chromosomes with only half the amount of DNA of a diploid. And I don't even know what centromeres are.

For #3 the answer is D because the whole purpose of sperm is to transfer DNA (In chromosomes) to the female ones to create a diploid that can grow into an embryo.
 
For #1, the answer is D (Flagella) because flagella are the little tails on the end of a sperm.

For #2 the answer is E (Homologogous), because sister chromosomes would mean that they were related (Have same DNA) Centrioles are a completely different organelle unrelated to DNA and haploid chromosomes are Chromosomes with only half the amount of DNA of a diploid. And I don't even know what centromeres are.

For #3 the answer is D because the whole purpose of sperm is to transfer DNA (In chromosomes) to the female ones to create a diploid that can grow into an embryo.
 
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