Which of the following is diploid?

A) gametophyte
B) egg
C) megaspore
D) sperm
E) zygote


Answer: E

Biology & Microbiology

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The gene that encodes for plant height in sunflower plants follows a strict recessive/dominant pattern of inheritance and has 2 alleles (tall and short). A tall sunflower plant is crossed with a short sunflower plant. Half of the offspring from this cross are tall, and the other half are short. From this information, what are the parents' genotypes?

What will be an ideal response?

Biology & Microbiology

Which of the following molecules would not readily cross an intact cell membrane by simple diffusion?

A) water B) glucose C) oxygen D) fatty acids E) ethanol

Biology & Microbiology

Which tissue has no direct blood supply?

a. cartilage b. adipose c. loose connective d. dense connective e. bone

Biology & Microbiology

Which of the following regulates salt balance?

A) ADH B) aldosterone C) atrial natriuretic hormone (ANH) D) renin E) both aldosterone and ANH

Biology & Microbiology