Which of the following is the most prevalent primary immunodeficiency disease?

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#Question id: 20021

#Unit 12. Applied Biology

Which one of the following can send electrical impulses into the body to reduce pain?

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#Question id: 33472

#Unit 2. Cellular Organization

Find correct True and False statements

A. Human females have 23 different chromosomes, whereas human males have 24.

B. In the living cell, chromatin usually adopts the extended “beads-on-astring” form.

C. The four core histones are relatively small proteins with a very high proportion of positively charged amino acids; the positive charge helps the histones bind tightly to DNA, regardless of its nucleotide sequence.

D. Nucleosomes bind DNA so tightly that they cannot move from the positions where they are first assembled.

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#Question id: 2080

#Unit 2. Cellular Organization

Which of the following factors would tend to increase membrane fluidity?

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#Question id: 19986

#Unit 2. Cellular Organization

Which of the following can be illustrated by C - value

a) Intron position 

b) position on evolutionary tree

c) evolutionary status of organism

d) exon position 

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#Question id: 19079

#Unit 4. Cell Communication and Cell Signaling

Pathogen evades plant by penetration of surface layers directly using mechanical pressure or enzymatic attack, some pass through natural openings, such as stomata or lenticels, and others only enter through wounded tissue. Once inside the plant, one of three main attack strategies is deployed specific feature of interaction given;

A) Necrotrophy

B) Biotrophy

C) Hemibiotrophy

i) where the plant cells remain alive throughout infection

ii) where the plant cells are killed in advance of infection 

iii) extensive plant tissue damage at initial stages

iv) where the pathogen initially keeps cells alive but at later stages of the infection, kills them

Match the following