Answer:
B
Explanation:
Natural selection works by selecting organisms that have unfavorable traits and killing them. However, if all the hydras are identical(from asexual reproduction), then there is no single organism that has a favorable trait over another.
Answer:A, B, C
Explanation:
A. The phospholipids are arranged in bilayers withe the Polar head groups oriented towards the extracellular side and the cytoplasmic side with a hydrophobic core.
The plasma membrane also contain membrane protein
B. Some Integral protein are Transmembrane protein the span the membrane and provide a hydrophilic channel and are selective for particular solute such as enzymes, antigens, hormones
The peripheral protein exit on the surface of the bilayer the serve as signal protein
C. The membrane lipid bilayers are not static or rigid. They show free lateral movement of its components hence the membrane is fluid in nature. Fluidity enables the membrane to perform endocytosis and exocytosis
Answer;
The process of respiration is essential in the oxygen/carbon dioxide cycle. Respiration removes oxygen from the atmosphere and produces and releases carbon dioxide to the atmosphere.
Explanation;
Respiration is one of the natural process that adds carbon dioxide to the atmosphere and at the same time remove or decrease the amount of oxygen.
Both plants and animals use respiration process to generate energy in form of ATP that is needed for basic functions such a growth and movement. During this process, nutrients such as glucose are combined with oxygen to yield energy in form of ATP, and also water and carbon dioxide as by-products.
Unlike photosynthesis, which uses carbon dioxide and water to yield nutrients (simple sugars) and oxygen gas, respiration uses oxygen and nutrients, to yield carbon dioxide and water, we can therefore they are antagonistic processes.
Answer:
An endospore may survive a drought because it is protected by a THICK WALL
Explanation:
An endospore is a structure that is produced by some bacteria. This structure possesses characteristics such as:
a. Endospores have thick walls
b. They are very resistant and resilient to changes in temperature.
c. They are resistant as well to the action or activity of some chemicals.
d. Endospores serves as a means of protection for microorganisms such as Bacteria.
e. Endospores do not reproduce.
f. Endospores can be dormant or Inactive for a very long period of time.
Endospores may survive drought, activity of chemicals, extreme weather conditions, extreme temperatures due to the presence of thick walls in their structure.
