When looking at plant and animal cells with an electron microscope, you notice that the plant cells have more Golgi membranes than the animal cells. This is most likely because unlike in animal cells, in plant cells the Golgi apparatus is involved in the production of
A. cytoplasm.
B. mitochondria.
C. chloroplasts.
D. cell walls.
Answer: D
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A certain type of congenital deafness in humans is caused by a rare autosomal (not X-linked) dominant gene
(a) In a mating involving a deaf man and a deaf woman (both heterozygous), would you expect all the children to be deaf? Explain your answer. (b) In a mating involving a deaf man and a deaf woman (both heterozygous), could all the children have normal hearing? Explain your answer. (c) Another form of deafness is caused by a rare autosomal recessive gene. In a mating involving a deaf man and a deaf woman, could some of the children have normal hearing? Explain your answer.
Certain traits will have been lost from the gene pool forever. Some traits, such as red hair or double-jointed thumbs, may be obvious. Others, such as the ability to process cholesterol or an allergy to peanuts, will be less obvious
This loss of diversity in a reduced population is called ________. A) gene flow B) genetic drift C) bottleneck effect D) founder effect
Bacterial endospores are easily damaged by heat and drying
Indicate whether the statement is true or false
If the mean annual precipitation of a region, currently characterized by grasslands, was to increase by 50 cm. per year, what type of biome(s) would evolve in that region?
A. taiga and temperate rain forests B. savanna C. deserts and tropical rain forests D. temperate forests E. temperate forests and shrublands