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3 years ago

Ovulation typically occurs ________ days before the menstrual period begins.

Biology

2 answers:

const2013 [10]3 years ago

8 0

Anywhere between 12-16 days

Yuri [45]3 years ago

3 0

Answer:

Ovulation usually happens 12 to 16 days before the menstrual period begins.

Explanation:

Ovulation is nothing more than the process of the release of an egg by the woman's body. This is a process that occurs with each menstrual cycle through hormonal changes proper to the female body. The woman's body raises luteinizing hormone (LH) to stimulate the ovary to release an egg from its reserve. Thus, ovulation usually occurs 24 to 48 hours after this hormone increases. In addition, ovulation usually occurs 12 to 16 days before the start of the next menstrual period.

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Lisa [10]

Tamam öğretmenim ben bir şey var ama ben bir insan bir arar bir insan bir cevap verir misin bana ya o kadar

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2 years ago

_____ is the study of how organisms interact with the living and nonliving parts of their environment.

Eduardwww [97]

Answer:

c. Ecosystem science

Explanation:

Sustainability is incorrect because it means the existence of resources for a long term.

Environmental science is incorrect because it is the branch of science that studies the processes and interactions that affect the environment.

Biodiversity science is incorrect because it is the study of various species that occupy a particular area.

The correct option is c. Ecosystem science is the study of community of living organisms, how they interact with themselves and with non-living components of the community.

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3 years ago

Pick three correct statements about enzymes. pls help.

Vadim26 [7]

I know C they may change shape when they bind substrates

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2 years ago

Isovolumetric relaxation and ventricular filling (two phases of the cardiac cycle) take place during __________. Isovolumetric r

Helga [31]

Answer:

Option B, ventricular diastole

Explanation:

Ventricular diastole also termed as ventricular relaxation consists of two phases. In the first phase, the following set of events takes place –

a) Relaxation of ventricle muscles

b) Reduction in pressure of blood within the ventricles

c) As this reduced blood pressure gets lower than that of pressure with in the pulmonary trunk and aorta, blood starts flowing back towards the heart.

d) A small dip in the blood pressure is observed at this stage

e) Volume at this stage remains constant as the atrioventricular valves remain closed

f) This phase is known as isovolumic ventricular relaxation phase

In the second phase, the following set of events takes place –

a) Relaxation of ventricular muscle

b) Dropping of pressure of the blood within the ventricles lower than that of pressure of blood in the atria

c) Blood starts flowing from atria into the ventricles thereby opening the tricuspid and mitral valves

d) Both the heart chambers chambers are in diastole,

e) Atrioventricular valves are open

f) Semilunar valves remain closed

Hence, option B is correct

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3 years ago

How are primary producers important to the alligator's energy supply

kozerog [31]

Primary producers make their own food for example plants. As you go into the upper levels of the food chain the energy gets distributed to each level, but they lose some of their energy. Without primary producers alligators will not be able to obtain the energy they need for themselves to survive.

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2 years ago