When is an animal most likely to enter into dormancy (hibernation kestivation)?

Biology

1 answer:

Nana76 [90]3 years ago

8 0

During hibernation, animals enter dormancy during winter months. Their body temperature drops, heart rate slows, and metabolism slows. Estivation occurs during hot or dry periods.

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Ribosomes can be found on the surface of the endoplasmic reticulum and suspended in the cytoplasm. True or false

SpyIntel [72]

True ribosomes make protiens and are scattered across the cell. some are just attached to things

8 0

3 years ago

Pain signals often have two components: an acute sensation of "first pain" which is felt almost immediately after an injury, and

o-na [289]

Answer:

This suggests that neurons that send the signals that we perceive as first pain Myelinated Tpye A-delta___, and neurons that send the signals that we perceive as second pain Unmyelinated-Type C.___.

Explanation:

Physiologically, primary afferent neurons that innervated the the touch, pain, temperature,and pressure receptors in the effectors to input sensory signals to the spinal cord and the brain are categorized based on their diameter, sizes, and nature of myelination. Based on this;

A-alpha has the largest diameter, myelinated, and sensitive to sensation from the muscle cells

A-beta are next in diameter, myelinated and sensitive to sensation of touch.

A-delta followed in diameter, and size. They are mylinated, and sensitive to pain and temperature.

C-fibres are least in diameter, they are unmyelinated, but sensitive to pain, touch and temperature.

Therefore, if the speed of conduction,of action potential in a neuron depends on the diameter(thickness) and myelination of the axon(saltatory conduction) :

''then, acute sensation/ first pain should be transmitted by the A-delta fibre. While the the slower/second pain should be transmitted by the slower unmyelinated - C-fibres''.

5 0

3 years ago

You have identified a mutation in a gene that seems to decrease transcription of another gene 2000 bp away from the mutation sit

Reil [10]

Answer:

Enhancer sequence.

Explanation:

Enhancers may be defined as the transcription factors that are used to enhance or increase the activity of the gene. Enhancers bind with the transcription factors to regulate and increase its expression.

The mutation in the enhancers decrease the transcription of of the other gene. These sequences lies far away from the transcription site but still known to increase the rate of transcription. Hence, the mutation has been done in the enhancer sequences.

Thus, the correct answer is option (b).

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3 years ago

Deficiency of vitamin b can lead to

Stolb23 [73]

Vitamin B12 deficiencies can lead to megaloblastic anemia, a condition where the bone marrow produces large abnormally shaped red blood cells that do not function properly. Dementia, paranoia, depression, and behavioral changes can result from a vitamin B12 deficiency. Neurological damage sometimes cannot be reversed

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1 year ago

How to make yogurt with fresh milk?

Eva8 [605]

1.Pour the raw milk into a stainless steel pot.
2.Heat the milk to 110 degrees F (it's still raw at this temperature).
3.Add 1 packet of your direct-set starter culture to the milk.
4.Stir the milk and starter together gently until combined.
5.Pour the mixture into the yogurt maker jars.
6.Put the jars into the yogurt maker (without the lids).
7.Turn on the yogurt maker and incubate the yogurt for about 7-8 hours until the yogurt has set.
8.Remove the jars from the yogurt maker, screw on the lids, and store in the fridge.
9.Yogurt is good for up to 2 weeks.

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3 years ago