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saw5 [17]
3 years ago
11

Help on bio test........

Biology
1 answer:
kirill115 [55]3 years ago
8 0

Answer:

A

Explanation:

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Will GIVE BRANLIEST.
iren [92.7K]

Answer:

I think it just all exists at once, if it never is created or destroyed. It must have just appeared at the same time at some point. It doesn't exactly come from anywhere, but that's my opinion. There might be another scientific answer out there, but that's what i think. I hope this helps.

Explanation:

8 0
3 years ago
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Where is the ovary derived from in a flower? Explain how this process happens.
neonofarm [45]

Pollination occurs when pollen grains from the anther land on a stigma. After pollen grains land on the stigma, a pollen tube grows from the pollen grain, through the style, and into the ovary. Sperm cells inside the pollen grain travel down the pollen tube and into the ovary which contains the ovules.

5 0
3 years ago
_________ threshold is also called the ________ threshold, the point at which lactic acid produced in muscles begins to accumula
Ne4ueva [31]

Answer:

1. Anaerobic

2. lactate

3. Aerobically

Explanation:

During excessive muscular activities such as a marathon, lactate fermentation occurs in muscles to serve as a source of ATP to sustain muscle contraction. The lactate produced during lactate fermentation is removed aerobically from muscles. Lactate threshold or anaerobic threshold refers to the intensity of physical activity that produces the blood lactate at a fast rate than its removal.

Increased intensity of exercise or physical activity increases lactate production. As the intensity reaches the point at which lactate cannot be removed from the body fast enough, it is accumulated and causes fatigue in muscles. Therefore, the lactate threshold is the upper limit that can be sustained aerobically by the body without any accumulation of lactate.

4 0
3 years ago
What is homeostasis?
Vlada [557]
C - the ability of the body to keep a constant internal state

• Homeostasis is something like hunger, where your body will let you know that you are hungry so that you will eat, and keep your body stable

hope that helps! :)
6 0
3 years ago
The survival of any species depends on variation among its members. Which of the following prodcues the LEAST variation in a spe
Harman [31]

Answer:

asexual reproduction

Explanation:

because every single organism in the species is the exact same genetically, there is no variation between them.

4 0
3 years ago
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