8. What is the difference between a unicellular organism and a multicellular organism?

Explanation:

unicellular organism are single celled organisms and usually cab not be seen by our naked eyes. Example:yeast, microscopic algae, bacteria and more

multicellular organisms are organisms that have two or more cells. Example plants, animals

It is generally acknowledged that as human beings age, it becomes more difficult for them to lose weight, or even maintain their current weight. People find they have to eat less and/or exercise more to maintain a healthy weight.

Which is the most likely explanation of why weight loss/maintenance becomes more difficult as people age?

a). As humans age, they becomes less active and use their muscles less; therefore, less chemical energy is converted to thermal energy.
b). As humans age, the process of extracting energy from the food becomes less efficient, so more food is needed to provide the same amount of energy.
c). As humans age, they become injured more often and need to increase the amount of food they eat to make repairs to body tissue.
d). As humans age, the body does not convert chemical to thermal energy, so they do no burn off any calories when exercising.

Please hurry!

1. Fill in the Punnett Square, showing the kinds of offspring (male or female) that are possible.
2. What is the genotype ratio for male and female offspring? __________
3. Is it more likely, less likely, or equally likely to produce boys instead of girls? ________

What do osmosis and diffusion have in common?
A.) Both permit molecules of any kind, whether solute or solvent, to cross the bilayer membrane.
B.) Both require the additional energy provided by an energy carrying molecule, like ATP, to allow molecules to pass through the membrane.
C.) Both processes occur through a semipermeable membrane called a concentration gradient.
D.) Both are the net movement of randomly moving molecules that makes concentration nearly equal on both sides of a bilayer membrane.

Explain the connection between genes and your traits. Be sure to use the word protein.

Which best describes the plate tectonic theory?

A) The Earth is a big puzzle
B) Broken plates of the Earth float on the liquid mantle

Which statement is not true of mitosis?

The statements are:

A There are four stages of mitosis

B It is the division of genetic material of a dividing eukaryotic cell into two parts

C it is a process that takes an average of eight minutes for any cell to complete the process

D each daughter cell receives a full set of chromosomes identical to the parent cell

What sound does a cat make

Dead ocean animals fall to the bottom of the ocean. A scientist notices rock layers that have formed on the ocean bottom with fossils of some of these animals. What type of rock is this?
PLS HELP

Living organisms are made up of cells. Cells are organized at different levels to form very complex living organisms like your body. Each level has a specific role or job to perform.

Which of the following lists these levels in the correct order of organization from the simplest to the most complex?

Cells, tissues, organs, organ systems, organisms
⊝

Organisms, organ systems, organs, tissues, cells
⊝

Tissues, cells, organs, organisms, organ systems
⊝

Organs, organ systems, organisms, cells, tissues

what is an outcome variable in an experiment?
Subject; science experiment

The ____ is the source of all energy in our atmosphere. a. Sun c. Moon b. water cycle d. Coriolis effect

Greek philosophers such as Democritus and Aristotle had ideas about the composition of matter. For example, Democritus believed matter was made of tiny, solid spheres that he called atomos, and Aristotle thought matter was made of earth, water, fire, and air. Aristotle's idea of matter was the accepted idea for over 2,000 years until John Dalton came up with a new theory about matter based on his experimental data. Which of the following best explains why Dalton’s theory became more widely-accepted over Aristotle's theory?


Aristotle’s theory did not have enough direct evidence due to poor observational tools.


Dalton’s theory had repeated observations which were supported by extensive evidence.


Dalton’s theory was more complete because more respected scientists found the ideas possible.


Aristotle’s theory became the law of conservation of mass when he documented phase changes of matter.

Which group of plants lacks true roots, stems, and leaves?

A seedless vascular plants
B nonvascular plants
C nonflowering seed plants
D flowering plants
This quetion is from edgenutiy

Ezra eats a cheese sandwich for lunch. Cheese contains a lot of protein, and bread is mostly starch. Ezra plans to play basketball later in the afternoon. He is breathing normally.

What does Ezra need from the food he ate and the air he breathes so that he can play basketball? How do Ezra’s body systems work together to get the molecules he needs into his cells? How do his cells use these molecules to release energy for his body to run?