SCIENCE EXAM Q1

blessing ni scoups

(1) Inhalation is the process of breathing in air, What takes place when you inhale?

(1) Inhalation is the process of breathing in air, What takes place when you inhale?

Diaphragm contracts and chest cavity moves down

(2) Your heart is a muscle that pumps blood throughout your body, Valves are part that acts like doors. Why are valves important?

It pumps the blood into the chambers of the heart

(3) In systemic circulation, blood moves from the heart to different parts of the body included in the circulation?

dli klaro ang answer bro

(4) Human body needs oxygen to survive. Why is oxygen important to our body?

It facilitates gas exchange

(5) An organ system is a group of organs that work together in the body function. What will happen if one of the organs of the respiratory system

The respiratory system will not be able to carry out its proper function.

(6) How can one's lifestyle affect the functioning of the respiratory and circulatory system?

Lifestyle can either weaken or strengthen the respiratory and circulatory system

(7) A black sheep is bred with a white sheep. All of their offspring, What is the most likely pattern of the inheritance for coat color?

Incomplete Dominance

(8) A red rose is crossed with a white rose. What is the result?

Pink roses

(9) A cross of a red cow (RR) with a white bull (WW) produces roan offspring (RW). What is this type of inheritance known as?

Codominance

(10) An organelle is a subcellular structure that has one or more specific jobs, what following are cell organelle, which of them does photosynthesis occur?

Chlorophyll

(11) What do sex limited and sex influenced traits have in common?

Both are autosomal

(12) There are 46 human chromosomes which comes by pair, which pair the chromosomes be found?

23rd pair

(13) Which of the following is NOT part of a DNA nucleotide?

Double Helix

(14) Which of the following is CORRECTLY PAIRED? (breathing)

Exhale : Oxygen

(15) Human blood type 0 is a recessive trait. Which of the following sex probability of having children with blood type 0?

A. Both parents are homozygous blood type O

B. Both parents are heterozygous blood type 0

C. One parent is homozygous blood type 0 and the other is heterozygous

D. The above choices are all correct

The above choices are all correct.

(16) Who can inherit Y-linked traits?

Males only, because only males have Y chromosome

(17) What is the probability of having Children with blood type A?

75%

(18) What is the probability of having Children with blood type B?

25%

(19) What is the probability of having Children with blood type 0?

0%

(20) What is the probability of having children with blood type AB?

50%

(21) Which of the following analogy is correct? (difference)

Bronchi: Small Stems

(22) Which of the following is correctly paired? (Their Function)

Capillaries: Gas Exchange

(23) Which of the following diseases causes inflammation or swelling of bronchia

Bronchitis

(24) Which of the following is correctly paired? (system)

Circulatory System: Distributes nutrients and gases to the different parts of the body

(25) Which sets of examples are ways of maintaining a healthy lifestyle?

Balanced diet, regular excercise and adequate rest.

(26) Rank the following blood vessels in order of their average pressure, lowest: artery, vein, arteriole, venule, aorta, capillary

Aorta > artery > arteriole > capillary > venule > vein

(27) What will happen if the population of species in a given area is doubled?

Competition for resources will also double.

(28) Populations are groups of individuals belonging to the same species that live region at the same time. Which affects population density?

A. Birth Rate

B. Death Rate

C. Migration

D. All of these

All of these

(29) What will happen if the population exceeds the carrying capacity of the ecosystem?

Organisms die because not all their needs will be met.

(30) Which of the following is not one of the ways in which coral reefs are threatened by

A. Development along waterways

B. Creation of articifical reefs

C. Overharvesting of fish

D. Pollution

Creation of articifical reefs

(31) What level of biodiversity is most commonly equated with the overall concept of biodiversity?

Genetic, species, and habitat diversity.

(32) What groups of organisms are most in danger of extinction?

A. Those with small populations

B. Those that migrate or need special habitats

C. Those with large populations that breed quickly

D. Both (a) and (b)

Both (a) and (b).

(33) How does the removal of decomposers from an ecosystem affect its function

A. Energy flow will stop

B. Rest components decomposition will become faster

C. Herbivores will not get sun light

D. Flow of nutrient will stop

Flow of nutrient will stop.