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Mnenie [13.5K]
3 years ago
15

The startle reflex occurs when

Biology
1 answer:
Phoenix [80]3 years ago
5 0
This startle reflex (aka moro reflex) is/was present in us as newborns.

It's triggered when there's an unexpected reaction. Example: Loud noise, sudden movement.

The baby will tighten his/her body, fling out arms, sort of like giving him/herself a hug. It happens because the baby is trying to protect itself from harm.

It normally leaves thanks to the mother's care, normally 6 weeks after the newborn is born. 
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Insect hormones and their receptors ________. A. act independently of each other B. are a focus in pest control research C. util
Leokris [45]

Insect hormones and their receptors are a focus in pest control and research. Hence, Option B is correct.

Some of the insect hormones such as ecdysone (molting hormone), JH (juvenile hormone) and their analogs can be used for biological  control of pests.

Option A: Hormone receptors are proteins that bind hormones and form hormone receptor complex to maintain cellular activities.

So Option A is incorrect.

Option B: Some of the peptide hormones used in pest control and research. So Option B is correct.

Option C: Peptide hormones interact with only cell surface whereas aminoacid derivatives and thyroid hormones directly interact with nucleus. so Option C is incorrect.

option D is incorrect.

Learn more on hormone receptor complex here:

brainly.com/question/15241630?utm_source=android&utm_medium=share&utm_campaign=question

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1 year ago
PLZ HELP ASAP!! Environmental factors can influence the gene expression in some organisms.
miskamm [114]

Answer:

The greatest of environmental factors on phenotype is on phenotypic plasticity, phenotypes that may change due to changes in the environment; ex: snowshoe hare have brown-colored fur in summer/spring and white fur in winter. Environmental factors may affect gene expression which may result in normal/abnormal phenotypic changes.

Explanation:

8 0
3 years ago
What does the circulatory system do for your body?
Katena32 [7]

Answer:

The circulatory system, also known as the cardiovascular system, is a simple loop which starts, and ends, with your heart. It is a closed system, meaning blood does not enter or leave the system during its journey from your heart to your body and back again.

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If you send in the minimum payment, you will be charged a late fee.

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I have searched everywhere, but I have not found the proposals of the question, but I will explain to you what is the endoplasmic reticulum so that you can answer it.

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The endoplasmic reticulum can be:

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