Which of the following is an intracellular factor that affects gene expression?

A.

Chemical signals from other cells

B.

Whether a cell's DNA is damaged

C.

Nutrient levels

D.

Mechanical signals from the extracellular matrix

Bronchitis is an infection which affects the bronchi. Bronchitis is an illness of the ___. digestive system immune system cardiovascular system respiratory system

Which term describes this example? A child with no freckles has a mother who has freckles and is heterozygous and a father who has no freckles and is homozygous recessive. a. female b. heterozygous c. homozygous recessive d. homozygous dominant e.

What was the purpose of Mendel's experiments with dihybrid crosses? A. To determine if traits are controlled by more than one gene B. To determine if one trait could affect the inheritance of another trait C.

1.) How are stem cells being used to improve the lives of people with skeletal differences? a) they are being used to power bionic limbs. b) they are being used to regenerate cartilage and other tissues.

In a plant, most water is conducted from the roots to the leaves through structures known as?

The relatively stable state of equilibrium that living systems maintain by regulating their metabolic processes is known a

What is at the base of all ecology pyramids?

Mendel believed that the characteristics of pea plants are determined by the what

Which of the following is likely NOT a common feature shared among all living organisms? All living organisms share a common set of biological molecules. All living organisms maintain some level of homeostasis.

Which of the following is an example of a plant? A. coral B. moneran C. bryophyte D. sponge