. Each group of questions below concerns an experimental or a labo tory situation. In each case, first study
the description of the situation. Then choose the one best answer to each que on following it.
In dogs, one pair of alleles determines coat color (dark and albino). Another pair of alleles determines hair length (short
and long). Thus, each gamete will contain one of the coat-color alleles, Cor cand one of the hair-length alleles, Bor b. In
repeated crosses of a specific dark, short-haired dog with an albino, long-haired dog, all the offspring were dark with
short hair, as shown in cross I. However, in subsequent crosses of another dark, short-haired dog with a dark, long-
haired dog, the ratios shown in cross Il below were obtained.
Cross Parents
I. Dark, short hair x Albino, long hair
II. Dark, short hair x Dark, long hair
Offspring
All dark, short hair
3 dark, short hair
3 dark, long hair
1 albino, short hair
1 albino, long hair
In cross II, the genotype of the dark, short-haired parent is

the answer will be a) proteins i believe

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex

question#1

ans:

cell is the basic unit of organization of all living things. cells are often called the building block of life and it is the smallest unit of life. the study of cell is called cell biology. cell consists of cytoplasm enclosed within membrane, which contain bio-molecules such as proteins and nucleic acid.

two third of cell is water, which means that two-third of your whole body is water. the rest is the mixture of molecules, mainly proteins, lipids and carbohydrates.

question#2

ans:

organ:

an organ is a group of tissues specialized to form a functional unit. an example is the heart in animals.

organ system:

an organ system is a group of several organs whose functions are synchronized to release an effective action in a living organism. an example is digestive system.

question#3

different systems perform different function at tissue level. for example, the respiratory system facilitates breathing. in the alveoli tissue of the lungs, the exchange of oxygen and carbon dioxide molecules between the air and the bloodstream occurs by passive transport, so that oxygen is taken in and carbon dioxide and water are removed. different systems of the body carry out different functions. for example, your digestive system is responsible for taking in and processing food, while your respiratory system working with your circulatory system is responsible for taking up oxygen and getting rid of carbon dioxide.

question#4

different systems perform different function at tissue level. for example, the respiratory system facilitates breathing. in the alveoli tissue of the lungs, the exchange of oxygen and carbon dioxide molecules between the air and the bloodstream occurs by passive transport, so that oxygen is taken in and carbon dioxide and water are removed. different systems of the body carry out different functions. for example, your digestive system is responsible for taking in and processing food, while your respiratory system—working with your circulatory system is responsible for taking up oxygen and getting rid of carbon dioxide.

question#5

our body works because of the interactions that happen between organs and organ systems.  

for example:  

the heart to regulate blood flow throughout the body. the blood carries oxygen and nutrients to the cells and carries carbon dioxide and waste away from the cells. body systems work together in maintaining a constant internal environment. when this balance is disrupted, the body systems may not function properly, and human health can suffer.   you start to feel bad.

1. b.

2. d.

3. a.

5. d.

6. c.

these are the only ones that i know, i hope this , and good luck.