Science(Biology)

Question 1

In multicellular organisms, _____ are undifferentiated or partially differentiated cells that can change into various types of cells and proliferate indefinitely to produce more of the same ______. They are the earliest type of cell in a cell lineage. They are found in both embryonic and adult organisms, but they have slightly different properties in each.

Answer 1

Stem Cells

Question 2

______, also known colloquially as the “white death”, or historically as consumption, is an infectious disease usually caused by Mycobacterium ______ bacteria. It generally affects the lungs, but it can also affect other parts of the body.[ Most infections show no symptoms, in which case it is known as latent ______ Around 10% of latent infections progress to active disease which, if left untreated, kill about half of those affected. Typical symptoms of active _____ are chronic cough with blood-containing mucus, fever, night sweats, and weight loss.Infection of other organs can cause a wide range of symptoms.[8]

Answer 2

Tubercolosis

Question 3

it is a mosquito-borne infectious disease that affects humans and other vertebrates.[6][7][3] Human malaria causes symptoms that typically include fever, fatigue, vomiting, and headaches.[1][8] In severe cases, it can cause jaundice, seizures, coma, or death.[1] Symptoms usually begin 10 to 15 days after being bitten by an infected Anopheles mosquito.[9][4] If not properly treated, people may have recurrences of the disease months later.[3] In those who have recently survived an infection, reinfection usually causes milder symptoms.[1] This partial resistance disappears over months to years if the person has no continuing exposure to malaria.[1]

Answer 3

Malaria

Question 4

A ______ (from Ancient Greek φέρω (phérō) ‘to bear’, and hormone) is a secreted or excreted chemical factor that triggers a social response in members of the same species.

Answer 4

Pheromone

Question 5

__________- are any members of the mammalian infraclass ______ia. All extant marsupials are endemic to Australasia, Wallacea and the Americas. A distinctive characteristic common to most of these species is that the young are carried in a pouch.

Answer 5

Marsupials

Question 6

_________ is a part of the cell cycle in which replicated chromosomes are separated into two new nuclei. Cell division by ________ is an equational division which gives rise to genetically identical cells in which the total number of chromosomes is maintained.

Answer 6

Mitosis

Question 7

Blood cells are produced by the _______, which is a spongy tissue located in the center of the bone cavity.

Answer 7

Bone marrow

Question 8

“_______” animals are animals whose body temperatures are dependent on their external environments, as they
cannot generate internal body heat on their own.

Answer 8

Cold-Blooded

Question 9

___ is the biological study that deals with the defining and classification of organisms using a branching tree syste,

Answer 9

Taxonomy

Question 9

Unlike eukaryotes, ____ lack a nucleus and other membrane-bound organelles. They are usually small bacteria.

Answer 9

Prokaryotes