9) where do the microtubules of the spindle originate during mitosis in both plant and animal cells?; a) centromere; b) centrosome; c) centriole; d) chromatid; e) kinetochore

Which of the following describes a high-intertidal zone A: completely absent of sunlight B: the intertidal zone only cover by high tides C: the area of lowest elevation in ocean tidal zones D: the first 600 feet of depth in the open ocean

What makes peat a nonrenewable energy resource? a. it can be replenished within a person's lifetime. b. when burned, it contributes to global warming. c. it takes much longer than a lifetime to form. d. when burned, it adds pollutants to the air.

A bacterial infection which causes the alveoli to fill with fluid and leads to the loss of air space results in an acute inflammatory disease known as

Nucleric acids in eukaryotes, DNA is found chiose all apply

The dermis is the _[blank]_ of the skin. thinner outer layer thicker outer layer thinner inner layer thicker inner layer

One of the primary functions of DNA in cells is to A. Serve as a storage firm for unused nucleotides B. Occupy space in the nucleus to keep the nucleus from collapsing C. Copy itself exactly for new cells

What feature do lymphatic vessels share with veins that allows lymph to flow in only one direction?

The negative stain is used to the negative stain is used to determine cell size. visualize endospores. determine flagella arrangement. visualize the outer membrane. determine gram reaction.

The visible part of the ear has the ability to stretch significantly, and then recoil back to its original position. Which protein fiber must be present?

Which cellular process takes place in the ribosome that are bound to the endoplasmic reticulum