In a fixed medium, which of the following contribute to a higher-pitched

sound?

A. shorter wavelength

B. higher amplitude

C. higher wave speed

D. more decibels

A spherical cell has a radius of 2 um. Calculate the surface area-to-volume ratio of the cell.

In 2008, the population of New Zealand was approximately 4,275,000 people. If the birth rate was 14 births for every 1,000 people, approximately how many births occurred in New Zealand in 2008?

A 5 kg block is sitting at the top of a hill that is 30 m high. What is the potential energy of the block

Here is a food chain. Use this food chain to answer this question. Which organism is an herbivore? A. grass B. bacterium C. spider D. grasshopper

In mitochondrial electron transport, what is the direct role of O2? to provide the driving force for the production of a proton gradient to provide the driving force for the synthesis of ATP from ADP and Pi to oxidize NADH and FADH2 from glycolysis,

The smallest functional unit of kidney that can perform all the functions is called what?

Briefly explain how plants are able to survive through periods of darkness and what other process they are able to utilize to stay alive

Why was the invention of the microscope crucial to the advancement of scientific discovery? what might have happened if it had not been invented?

Transport protein that provides a tube-like opening in the plasma

What Eon do we happen to live in currently?