Which is true about autotrophs?

a. They are primary producers

b. They make their own food.

c. They are the base of the food chain.

d. All of the choices are true.

Humans have 46 chromosomes in each somatic cell. a. How many chromosomes does a child receive from its father? b. How many autosomes and how many sex chromosomes are present in each somatic cell? c.

What describes the structure of a DNA molecule

What conditions and raw materials are necessary for photosynthesis to occur

What disease can occur when the pancreas is not working properly?

When a male pig from a line of true-breeding (homozygous) black, solid-hooved pigs was crossed to a female from a breed (homozygous of red, cloven-hooved pigs, their several progeny all looked alike with regard to color and hooves.

Which statement correctly describes the mechanism of inheritance? Alleles from heterozygous chromosomes determine traits. Chromosomes on homozygous genes determine traits. Alleles on homologous chromosomes determine traits.

Organisms that use energy from the sun to make their own food are called

Explain why identical twins containing the same DNA often have differences in their phenotypes (physical appearance).

Which type of fault causes land to move downward? A) sliding fault B) strike-slip fault C) reverse fault D) abnormal fault E) normal fault

The best adapted individuals in a population survive and produce offspring that are likewise well adapted. this is called: