In cellular membranes why do the tail ends of the lipid molecules face toward each other

A planet is at equal distance from two stars, Star 1 and Star 2. If both stars have the same mass, they will not pull each other with a gravitational force they will pull the planet with equal gravitational force Star 1 will pull the planet with a

Organisms at the cellular level cannot maintain homeostasis. a. True b. False

Below are some different scenarios for the heritability of a trait and the selection differential in a population. which scenario will produce the largest response to selection?2

Which of the following best explains why aerobic respiration is more energy efficient than anaerobic respiration? A. Aerobic respiration occurs in one step, while anaerobic respiration requires several steps. B.

What is a Nuclear envelope that appears around the two sets of DNA?

How do cells become specialized for different functions?

Organisms do not adapt as a result of competition for resources. true or false

How do most cancers arise? question 1 choices choice a., from a single mutations arising simultaneously in a cluster of cells choice b., from a series of mutations that arise in the descendants of a single somatic cell choice c.

Briefly describe your experimental design for the first experiment. Make sure to include: a. The conditions you used to feed your mice (e. g., the foods you fed your mouse and the length of time the mouse was in the light box) b.

What caused the earth to develop layers as it cooled?