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svp [43]
3 years ago
11

In humans, it has been estimated that approximately _____ percent of fertilized eggs fail to develop into viable organisms.

Biology
1 answer:
Wewaii [24]3 years ago
6 0
Upto 50%of human conceptions fail before the little guys can swim successfulllyinto the egg and be home free :)
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miRNAs can control gene expression by what action?A. degrading proteins as soon as they are formedB. inhibiting the catalytic ac
levacccp [35]

Answer:

C) binding to mRNAs and degrading them or blocking their translation

Explanation:

<u>miRNAs:</u>

miRNAs is the abbreviation of MicroRNAs. These are the small noncoding RNAs of ∼22 nucleotides which can not code for peptides. miRNAs are responsible for gene expression regulation at the level of post transcription. They can do so by forming complementary base pairing with target mRNA and inhibiting their translation.

They silenced mRNA by the following processes:

(1) Cleavage of the mRNA strand into pieces,

(2) stopping mRNA from translation into proteins by ribosomes.

(3) Shortening of mRNA poly(A) tail and destabilizing it.

5 0
3 years ago
Why were there no living inhabitants on earth for the first billion years?
Nutka1998 [239]

There was no life on Earth for the first billion years because the atmosphere was not suitable for life. Earth's first atmosphere had lots of water vapor but had almost no oxygen. Later, frequent volcanic eruptions put several different gases into the air.

4 0
2 years ago
Determining the current state process yield level would likely occur during which dmaic phase?
stiv31 [10]
<span>During the Define phase of dmaic an initial measurement could be established to determine what will then be measured. the current state process yield level could concurrently determined during the analyze state of dmaic. Once yield levels are established steps can be implemented to determine improvement, and the future control.</span>
7 0
3 years ago
Which sensory system does not route to the thalamus before going to the primary cortex?.
Katena32 [7]

Answer:

for smell

Explanation:

The only sensory information that is not relayed by the thalamus into the cerebral cortex is information related to smell (olfaction).

3 0
2 years ago
Please help I am going on a trip so, please hurry
Nutka1998 [239]
I think this is correct

1. Organelle, cells, tissues, organs, organ systems, organisms, population, communities, ecosystems and finally biosphere.

2. (Human Body) Bone cells, Fat cells, Nerve cells.

3. neuron, a collection of neurons, nervous system, brain

4. Plants don't have a liver, stomach or lungs, while animal organ systems do.
8 0
2 years ago
Read 2 more answers
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