Recent questions in Biology

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What do you need to Mega evolve a Lucario?

TravMatth asked Dec 25, 2024

by TravMatth

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Allelic exclusion ensures that B cells _______ a. Express only one heavy and light chain b. Does not proliferate c. Does not undergo isotype switching d. None of the above

Dik asked Dec 25, 2024

by Dik

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1 vote

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Teddy has 22 bones. about how many bones does he have?

Cbr asked Dec 25, 2024

by Cbr

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Which blood vessel branches from the brachial artery? a. maxillary artery b. vertebral artery c. radial artery d. lingual artery

Saurav Saha asked Dec 25, 2024

by Saurav Saha

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In spatial summation the same stimulus is repeated until a threshold level of depolarization is reached_____

Jason Lydon asked Dec 25, 2024

by Jason Lydon

8.3k points

1 answer

3 votes

15.5k views

When an action potential arrives at the end of the axon terminal, a series of events take place that result in the release of neurotransmitter from the presynaptic axon. Select the answer that correctly

Konsolebox asked Dec 25, 2024

by Konsolebox

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3 votes

115k views

The hemoglobin in humans exists in how many main types?

Sourcey asked Dec 25, 2024

by Sourcey

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5 votes

65.6k views

Which of these characteristics of living organisms are present in viruses? a. composed of one or more cells; obtain energy from their environment; reproduce using DNA (or RNA) b. reproduce using DNA (or

Trahane asked Dec 25, 2024

by Trahane

7.4k points

1 answer

0 votes

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Which mineral is a central component of vitamin b12

Peadar asked Dec 25, 2024

by Peadar

8.1k points

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3 votes

67.5k views

Immature B cells that pass the self-tolerance test are identified by the coexpression of IgM and IgD. This occurs through _____________.

Shandell asked Dec 25, 2024

by Shandell

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181k views

Besides sugar, what is required for cellular respiration to occur? 1) Oxygen 2) Water 3) Protein 4) Carbohydrates

Beigel asked Dec 25, 2024

by Beigel

8.1k points

1 answer

0 votes

52.4k views

In the context of bacteriophage lambda and the lytic-lysogeny states, what defense mechanisms do host bacteria employ against toxic proteins produced during the lytic phase? A) Bacteria initiate an immune

Peppermintology asked Dec 25, 2024

by Peppermintology

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In the mouth, stomach, and small intestine, the mucosa contains: A) Absorptive cells B) Mucus-secreting cells C) Pancreatic enzymes D) Nerve cells

Feru asked Dec 25, 2024

by Feru

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Between ages 60 and 90, adults with higher levels of education show significantly less ____ of the _____. Reaction time increases for ____ as ____ slows. Loss of ____ occurs, but they are not as _____

Hillmark asked Dec 25, 2024

by Hillmark

7.8k points

1 answer

4 votes

152k views

For each of the following traits, identify whether you think the trait is an analogy or a homology, and why. A. Dolphins and sharks have fins. B. Horses and zebras have hooves. C. Turtles and snails have

Braj asked Dec 25, 2024

by Braj

8.2k points

1 answer

5 votes

131k views

Which of the following would best explain the differences between closely related species found on each of the four landmasses. A. hybridization B. temporal isolation C. behavioral isolation D. geographic

Marcel Blanck asked Dec 25, 2024

by Marcel Blanck

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2 answers

2 votes

95.5k views

Taxol, a plant alkaloid originally found in yew trees, is an anticancer drug. How does Taxol prevent cell division? 1) Taxol prevents actin filament depolymerization, halting mitosis. 2) Taxol prevents

SamuraiJack asked Dec 25, 2024

by SamuraiJack

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1 vote

174k views

Ramus of mandible (male vs female) ??

La Lluvia asked Dec 25, 2024

by La Lluvia

8.2k points

1 answer

4 votes

87.0k views

Paddies are an example of anthropogenic wetlands. Is this statement true or false? A) True B) False

Instaable asked Dec 25, 2024

by Instaable

8.0k points

1 answer

1 vote

39.6k views

Select the correct answer. Which part of the brain is responsible for homeostasis (regulating body temperature)? O A. cerebral cortex OB. basal ganglia O C. thalamus OD. hypothalamus

Seburdis asked Dec 25, 2024

by Seburdis

8.2k points

2 answers

0 votes

129k views

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