James was observing cells under a microscope. He observed some cells which had a layer outside the plasma membrane. What is this layer called?

A. Cell membrane

B. Cell wall

C. Nuclear membrane

Why are horses and donkeys considered different species even though they can interbreed? A) because horses and donkeys are not morphologically similar B) because they came from different ancestors C) because their offspring are infertile

Gabriel is performing an experiment in which he is measuring the energy and work being done by a ball rolling down a hill. Which statement best describes Gabriel's measurements? They will remain constant. They will both be recorded in joules.

Which of the following statements is true? A. Potential energy is the stored energy that an object has due to its position, shape, or chemical make up. B. Potential energy is the energy that objects have due to their motion. C.

Walking along a mile-long path in the woods, you notice a stand of your favorite wildflower, the cardinal flower, three different times. You find each stand of cardinal flower, including many flowers in each stand, on a stream bank.

When a salt dissolves in water, it produces either a hydrogen ion or a hydroxyl ion. TrueFalse

Which organisms are producers in the good web

Which of the following animals is a deuterostome? chordate mollusk arthropod annelid

Middle layer of the wall of an artery or vein allowing it to withstand and modify blood pressure is

Strobe lighting tends to create hot spots and can make a portrait uncomfortable for the individual. True or false.

Which is a biological activity a person can do at the beach? Question 17 options: experiment with sand erosion patterns identify various minerals in the sand measure tidal differences during the day observe the feeding behaviors of gulls