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A scientist discovers a cell that has chloroplasts, cytoplasm, DNA, and a cell membrane. Which statement best describes how

the cell could be classified?

The cell is prokaryotic her

has DNA

You come home one night to find a burglar in your house. Your heart starts racing and you begin to perspire. These physical reactions are triggered by the: question 19 options:

Changes in the DNA sequence that affect the expression of genetic information are called A) infiltrations B) mutations C) replications D) transformations

An embryologist is looking at a cross-section of a mouse embryo. she notices that flanking either side of the neural tube (the rudiment of the spinal cord) are eggplant-shaped structures that contain many cell bodies.

Avery and DNA (page 289) 7. Is the following sentence true or false? Avery and his colleagues thought that the molecule required in transformation might also be the molecule of the gene.

Much like a cell, a virus is able to A. obtain and use energy. B. grow and develop. C. change over time. D. respond to its environment.

What is one difference between mitotic cell division in plants and mitotic cell division in animals? A) Chromosomes are replicated in plants but not in animals. B) The replicated chromosomes separate in plants but not in animals.

A woman who is normal weight before her pregnancy should gain approximately how much weight throughout the first trimester of her pregnancy?

A biological community of interaction organisms and their physical environment

The tilt and size aftereffects both illustrate: a. that percepts are likely mediated by the collective activity at ensembles of neurons b. that adaptation to patterns causes selective changes in sensitivity in certain neurons c.

Which of the following make up our integumentary system? * A. Skin B. Hair C. Finger nails D. All of the above.