Recent questions in Biology

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True or False: Early trauma and abuse can have long-term consequences through the mechanism of epigenetics, which change DNA gene activity or expression by altering DNA organization without modifying the

Naka asked Dec 25, 2024

by Naka

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Does creeping bentgrass have rolled vernation? a) Yes b) No

Thesquaregroot asked Dec 25, 2024

by Thesquaregroot

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4 votes

180k views

Which stage of meiosis do oocytes get arrested in and then start up during puberty? a) Prophase I b) Metaphase I c) Anaphase I d) Metaphase II

Dan Kilpatrick asked Dec 25, 2024

by Dan Kilpatrick

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4 votes

77.7k views

What is the primary function of photoreceptor cells in the retina?

Niranja asked Dec 25, 2024

by Niranja

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5 votes

116k views

These small, spherical organelles contain enzymes that can perform specialized functions, like converting fats to carbohydrates. True or False

Kenny Winker asked Dec 25, 2024

by Kenny Winker

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1 answer

2 votes

137k views

Which of the following is not something associated with Eukaryotic Telomeres? 1) Chromosome ends shorten with each round of replication 2) Most somatic cells don't produce telomerase 3) Cancer cells contain

Lkristjansen asked Dec 25, 2024

by Lkristjansen

7.9k points

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2 votes

36.0k views

Which of the following will double the permeability of a solute in a lipid bilayer? 1) Doubling the molecular radius of the solute 2) Doubling the oil/water partition coefficient of the solute 3) Doubling

Coreus asked Dec 25, 2024

by Coreus

8.1k points

1 answer

1 vote

126k views

There would be more anterior slip of the L5________________

Ashakirov asked Dec 25, 2024

by Ashakirov

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3 votes

117k views

The co-stimulatory molecule _____ on professional antigen-presenting cells binds _____ on the surface of naive T cells. 1) DC-SIGN; ICAM-3 2) B7; CD28 3) ICAM-1; LFA-1 4) MHC class II; T-cell receptor

Banzhe asked Dec 25, 2024

by Banzhe

8.2k points

1 answer

5 votes

59.8k views

The discovery of Okazaki fragments suggested that DNA synthesis is __________. Options: A. Bidirectional B. Continuous C. Discontinuous D. Unidirectional

Behe asked Dec 25, 2024

by Behe

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1 answer

4 votes

92.1k views

9) A student spreads modeling clay in a flat, rectangular tray. He presses small pebbles and nails into the clay and puts the tray in the freezer. In a similar tray, he pours wax and allows it to harden.

Eugene Gordin asked Dec 25, 2024

by Eugene Gordin

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4 votes

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How do we know when LDA or QDA performs better on the test or training set? A) Use cross-validation B) Compare prediction errors C) Assess model assumptions D) Analyze feature importance

Massimiliano Janes asked Dec 25, 2024

by Massimiliano Janes

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2 votes

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Purple flowers (P) are dominant to white flowers (p). Give the phenotype for each genotype listed below. 1) Purple 2) Purple 3) White

GameLoading asked Dec 25, 2024

by GameLoading

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1 answer

0 votes

200k views

Which of the following is NOT considered primary lymphoid tissue? 1) Draining lymph node 2) Thymus 3) Peyer's patch 4) Choices A and C are not primary lymphoid tissue. 5) None of the above is primary lymphoid

Stevensonmt asked Dec 25, 2024

by Stevensonmt

7.8k points

1 answer

0 votes

76.3k views

True or False: There are two types of petrification. A True B False

Omkara asked Dec 25, 2024

by Omkara

7.9k points

1 answer

2 votes

157k views

Which of the following statements is NOT correct regarding the motor units and their activation? A) A motor unit in muscles of gross movement can have thousands of muscle cells. B) All muscle fibers in

CAPSLOCK asked Dec 25, 2024

by CAPSLOCK

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1 answer

4 votes

186k views

Which type of motor unit can contract for many hours, or even days if necessary? a) Type I b) Type IIa c) Type IIb d) Type III

Tiago Fael Matos asked Dec 25, 2024

by Tiago Fael Matos

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5 votes

108k views

The anion gap, an estimate of anions not directly measured in serum, is correctly calculated by which of the following formulae? a) Anion Gap = (Na+ - Cl-) - HCO3- b) Anion Gap = Na+ + K+ - Cl- c) Anion

Sohee asked Dec 25, 2024

by Sohee

8.8k points

1 answer

2 votes

219k views

Guys please help me with this

Aldan Creo asked Dec 25, 2024

by Aldan Creo

7.6k points

2 answers

5 votes

137k views

The number of pairs of cranial nerves is A. 6 B. 3 C. 12 D. 16 E. 20

Artkoenig asked Dec 25, 2024

by Artkoenig

8.1k points

1 answer

3 votes

150k views

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