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3 years ago

The ______________ is the tube that at different times carries urine and semen out of the body.

Biology

2 answers:

Svetlanka [38]3 years ago

4 0

The penis carries the urine semen and seamen urine and the urine and semen

liubo4ka [24]3 years ago

3 0

The male urethra connects the urinary bladder to the penile meatus for the excretory/urinary system for metabolic waste (urine) excretion, and it also connects to the vas deferens via the prostate for the reproductive (ejaculatory) tract. Thus at different times (sexual ejaculation vs. micturition/urination) the male urethra carries both semen and urine, respectively.

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Which type of gene therapy results in alteration of the DNA of a gamete or a fertilized ovum?

larisa86 [58]

Answer:

The correct option is: e. Germline gene therapy

Explanation:

The germline gene therapy, GGT is the modification of the germ cells. In this therapy, a functional gene is introduced into the genomes of the gametes. Such a modification of the germ cell results in all the cells of the organisms to get modified. This change can therefore be passed on to the next generations. Many countries such as Canada, Germany and Switzerland, have prohibited the use of the germline gene therapy on humans.

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3 years ago

The respiratory system allows for gas exchange to happen in the lungs. How does the respiratory system affect the cardiovascular

strojnjashka [21]

The answer is B.The respiratory system supplies the oxygen that the cardiovascular system transports to the different cells for the production of energy.

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3 years ago

Part A - Modification of chromatin structure Which statements about the modification of chromatin structure in eukaryotes are tr

Salsk061 [2.6K]

Answer:

Some forms of chromatin modification can be passed on to future generation of cells

Acetylation of histone tails in chromatin allows access to DNA for transcription

DNA is not transcribed when packaged tightly in a condensed form

methylation of histone tails can promote condensation of the chromatin

Explanation:

chromatin modifications that can be passed on includes epigenetic modifications that are heritable changes made to the chromatin structure that does not involve the DNA sequences. Some epigenetic modifications include DNA methylation and Histone modifications. examples of histone modification include acetylation, methylation, phosphorylation, ubiquintylation etc. All these function either in allowing the DNA become more accessible to transcritional factors or vice versa. for exmple, histone tail acetylation encourages unwounding of nucleosomes allowing transcriptional factors to have access to the DNa while histone tails methylation further tightens the nucleosomes promoting condensation of the chromatin.

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3 years ago

Wood deposits recovered from an archaeological site contain 36% of the C-14 they originally contained. How long ago did the tree

Veseljchak [2.6K]

Answer: It was obtained 8515 years ago

Explanation:

Expression for rate law for first order kinetics is given by:

$t=\frac{2.303}{k}\log\frac{a}{a-x}$

where,

k = rate constant

t = age of sample

a = let initial amount of the reactant

a - x = amount left after decay process

a) to find the rate constant:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

$t_{\frac{1}{2}}=\frac{0.693}{k}$

$k=\frac{0.693}{5760}=0.00012years^{-1}$

b) for completion of 36% of reaction

$t=\frac{2.303}{k}\log\frac{100}{36}$

$t=\frac{2.303}{0.00012}\log\frac{100}{36}$

t = 8515 years

The time was 8515 years.

3 0

3 years ago

For each function listed, choose the correct macromolecule from the drop-down menu. Store and transmit genetic information Are p

Svetlanka [38]

Store and transmit genetic information: nucleic acid
Are primarily used to store energy: lipids
Help regulate cell processes: proteins
Are used for main source of energy: carbohydrates

4 0

3 years ago

Read 2 more answers