I think it might be the first one. Not really sure though!
They only have 23 chromosomes because they go through meiosis instead of mitosis, in mitosis the chromosomes are duplicated so then you have cells with the full 46 chromosomes, however eggs and sperm go through meiosis which doesn’t duplicate the cells because when a sperm (23 chromosomes) and a egg (23 chromosomes) combine then there’s the full 46 chromosomes for the cell.
Answer:
The correct answer is "begin to cross the membrane while still being synthesized".
Explanation:
The missing answers for this question are:
A) are transported across the membrane after their synthesis is complete.
B) are synthesized on free ribosomes in the cytosol.
C) begin to cross the membrane while still being synthesized.
D) remain within the endoplasmic reticulum.
The correct answer is option C) "begin to cross the membrane while still being synthesized".
Most proteins that are destined to enter the endoplasmic reticulum to fold and suffer its post-translational modifications, begin to cross the membrane while still being synthesized. Furthermore, the subunit proteins that have a quaternary structure cross the membrane in an unfolded state and its proper folding is mediated while the multi-subunit polypeptides start to be bounded together.
The correct option is (D).
An amino group and carboxylic acid group are the most basic common components in all amino acids. While, R group in the amino acids always different (here R describes the alkyl group).
Organic substances having both amino and carboxylic acid functional groups are known as Amino acids. Alpha-amino acids, which make up proteins, are by far the most significant of the hundreds of amino acids found in nature.
Amino acids perform a variety of processes in our body including muscular growth, delivering nutrition, prevent disease, and many more. A lack of certain amino acids can lead to a variety of health concerns, including lowered immunity, digestive disorders, depression, less mental alertness, slower child growth, etc.
There are total 20 amino acids, out of them 9 are essential amino acids means they are not synthesis by our body they must be taken outside from diet and nutrition.
To learn more about amino acids, refer this link.
brainly.com/question/11134520
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Answer:
Non polar molecule, small
Explanation:
Cell membrane is a selectively permeable membrane.
Factors that affect permeability of a molecule are-
A. Size - Small molecules can easily pass through the membrane than the large molecules.
B. Solubility - Non polar molecules ( eg. carbon dioxide) are lipid soluble in cell membrane , so they can easily pass through the membrane than the polar molecules (eg. glucose)
